Store events and create deliveries in the delivery engine (closes #544)

The receiver, resubmit and replay handlers now read and check the
request and make one call. Engine.StoreEvent stores an event with a
pending delivery for each active target and the totals in one
transaction, then queues them; Engine.CreateReplay does the same for
one replay delivery. The handlers take *delivery.Engine, so the
Notifier interface and its bridge are gone, and the engine's notify is
no longer exported. Archives and CircuitBreakers stay because the
handler tests fake them. The tests that read a queued task moved to
the engine's tests; the handler tests use an engine that is never
started.

Model: opus-5-5

README.md

@@ -1346,11 +1346,11 @@ webhooker solves this by acting as a durable intermediary:
     **That guarantee is at-least-once, not exactly-once.** When a send reaches
     its target but the write recording that outcome fails, the delivery is
     deliberately left in a recoverable state rather than marked done — losing a
-    delivery is the worse failure — so the pending sweep picks it up about
+    delivery is the worse failure — so the sweep picks it up about fifteen
-    fifteen minutes later, or the next restart does, and the target receives a
+    minutes later, or the next restart does, and the target receives a payload
-    payload it already got. A send still in flight when the service stops is
+    it already got. A send still in flight when the service stops is left the
-    left the same way: its attempt is not recorded, and the next start sends it
+    same way: its attempt is not recorded, and the next start sends it again
-    again (see Shutdown). webhooker adds no delivery identifier of its own to an
+    (see Shutdown). webhooker adds no delivery identifier of its own to an
     outbound request, so **make your receiver idempotent** against whatever the
     payload itself carries.
 
@@ -1579,15 +1579,20 @@ did not arrive on the URL and counts in neither.
 A delivery destination for events. Each target defines where and how events
 should be forwarded.
 
-| Field          | Type       | Description                                                                                                                                                                             |
+| Field              | Type       | Description                                                                                                                                                                             |
-| -------------- | ---------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
+| ------------------ | ---------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
-| `id`           | UUID       | Primary key                                                                                                                                                                             |
+| `id`               | UUID       | Primary key                                                                                                                                                                             |
-| `webhook_id`   | UUID       | Foreign key → Webhook                                                                                                                                                                   |
+| `webhook_id`       | UUID       | Foreign key → Webhook                                                                                                                                                                   |
-| `name`         | string     | Human-readable name                                                                                                                                                                     |
+| `name`             | string     | Human-readable name                                                                                                                                                                     |
-| `type`         | TargetType | One of: `http`, `slack`, `database`, `log`                                                                                                                                              |
+| `type`             | TargetType | One of: `http`, `slack`, `database`, `log`                                                                                                                                              |
-| `active`       | boolean    | Whether deliveries are enabled (default: true)                                                                                                                                          |
+| `active`           | boolean    | Whether deliveries are enabled (default: true)                                                                                                                                          |
-| `config`       | JSON text  | Type-specific configuration                                                                                                                                                             |
+| `url`              | string     | Where an `http` or `slack` target sends each event. It is a credential: the target list shows only its scheme and host, and only the target edit form shows it whole                    |
-| `max_attempts` | integer    | How many times an `http` or `slack` target attempts each delivery in all: at least 1, and 1 by default. Ignored by `database` and `log` targets. The web UI labels it Delivery attempts |
+| `headers`          | JSON text  | An `http` target's extra request headers, a JSON object of name to value                                                                                                                |
+| `timeout_seconds`  | integer    | An `http` target's per-request timeout; 0 uses the shared 30-second client timeout                                                                                                      |
+| `forward_query`    | boolean    | Whether an `http` target is sent the query string each event arrived with                                                                                                               |
+| `archive_expiry`   | integer    | How long a `database` target keeps each archived event, as a Go `time.Duration` (nanoseconds); 0 keeps them forever                                                                     |
+| `archive_rotation` | string     | How often a `database` target starts a new archive file: `none`, `monthly`, `daily` or `hourly`                                                                                         |
+| `max_attempts`     | integer    | How many times an `http` or `slack` target attempts each delivery in all: at least 1, and 1 by default. Ignored by `database` and `log` targets. The web UI labels it Delivery attempts |
 
 **Relations:** Belongs to Webhook. Has many Deliveries.
 
@@ -1598,10 +1603,10 @@ should be forwarded.
   failed delivery with exponential backoff, up to that many attempts in all,
   behind a per-target circuit breaker.
 - **`slack`** — Post the event as a formatted message to a Slack-compatible
-  incoming webhook URL (`webhookUrl` in `config`). It is built on the same HTTP
+  incoming webhook URL, its `url`. It is built on the same HTTP core as `http`
-  core as `http` and honours `max_attempts` identically, circuit breaker
+  and honours `max_attempts` identically, circuit breaker included. See the
-  included. See the Slack target section under "Per-Webhook Event Databases" for
+  Slack target section under "Per-Webhook Event Databases" for the message
-  the message format.
+  format.
 - **`database`** — Archive the full event as a row into the target's own archive
   database (`archive-{webhook_name}-{target_name}-{target_uuid}.db`) for
   long-term retention, with an optional creation-validated expiry (default: keep
@@ -1617,29 +1622,28 @@ should be forwarded.
 - **`log`** — Write the event to the application log (stdout). Useful for
   debugging.
 
-The `config` field stores type-specific configuration as JSON (e.g., destination
+Each type uses only its own settings, and the ones it does not use stay empty:
-URL, custom headers, timeout settings).
+`http` uses `url`, `headers`, `timeout_seconds` and `forward_query`; `slack`
+uses `url`; `database` uses `archive_expiry` and `archive_rotation`; `log` uses
+none. The add target form, the new webhook form and the target edit form check
+every setting before it is saved, and each setting is a column of its own, so
+nothing that reads a target parses its settings or has to handle one it cannot
+read.
 
-**`http` target configuration:**
+An `http` target POSTs the event to its `url`. Its `headers` are applied last,
+so they win over the event's own forwarded headers.
 
-| Key            | Type          | Description                                                                               |
+`forward_query` is off by default, and the target URL is then sent exactly as
-| -------------- | ------------- | ----------------------------------------------------------------------------------------- |
-| `url`          | string        | Destination the event is POSTed to                                                        |
-| `headers`      | object        | Extra request headers, applied last so they win over the event's own forwarded headers    |
-| `timeout`      | integer (sec) | Per-target request timeout; unset (or 0) uses the shared 30-second client timeout         |
-| `forwardQuery` | boolean       | Pass the query string each event arrived with on to the target; unset (or false) does not |
-
-`forwardQuery` is off by default, and the target URL is then sent exactly as
 configured. On, each delivery appends the event's query string to the target
 URL, joined with `&` when the URL already has a query string of its own; a
 replayed delivery and a resubmitted event's deliveries do the same. Both target
 forms offer it as "Pass the query string on to this target", and the target list
 shows it when it is on.
 
-`timeout` is capped at **300 seconds**, and the form rejects anything above it
+`timeout_seconds` is capped at **300 seconds**, and the form rejects anything
-rather than substituting the cap. A delivery attempt holds one of the bounded
+above it rather than substituting the cap. A delivery attempt holds one of the
-pool's workers for its whole duration, so an unbounded timeout would let a
+bounded pool's workers for its whole duration, so an unbounded timeout would let
-single unresponsive destination stall the queue.
+a single unresponsive destination stall the queue.
 
 `headers` rejects the names the delivery path or `net/http` writes regardless of
 what is configured: `Host`, `Content-Length`, `Transfer-Encoding`, `Connection`,
@@ -1713,7 +1717,7 @@ The event log and the event's own page show the query string with the rest of
 the request. The event log leaves out one larger than 32 KiB, as it does request
 headers, and links to the event's page, which shows it whole. The `database` and
 `log` targets carry it with the rest of the event. An `http` target receives it
-only when its `forwardQuery` setting is on.
+only when its `forward_query` setting is on.
 
 #### Delivery
 
@@ -1865,15 +1869,15 @@ These indexes on the per-webhook event databases are created by
 `internal/db/migrations/events/001_schema.sql`, and declared in the model tags
 to match:
 
-| Table              | Columns                                                            | Serves                                                                                                                                                                                                                                                                                                                                                                                             |
+| Table              | Columns                                                            | Serves                                                                                                                                                                                                                                                                                                                                                                             |
-| ------------------ | ------------------------------------------------------------------ | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
+| ------------------ | ------------------------------------------------------------------ | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
-| `deliveries`       | `status`, `deleted_at`, `finished_at`, `target_id`                 | Startup recovery, the retry and pending sweeps every 60 seconds and the queue-depth sampler every 30 seconds, which select deliveries by status, the webhook page's statistics and target list and the webhook list, which count each target's deliveries by status and when they finished, and the event log, which lists and counts the events with a failed delivery or one pending or retrying |
+| `deliveries`       | `status`, `deleted_at`, `finished_at`, `target_id`                 | Delivery recovery at start and every 60 seconds and the queue-depth sampler every 30 seconds, which select deliveries by status, the webhook page's statistics and target list and the webhook list, which count each target's deliveries by status and when they finished, and the event log, which lists and counts the events with a failed delivery or one pending or retrying |
-| `deliveries`       | `event_id`, `deleted_at`                                           | The event log, which loads each event's deliveries, and retention, which counts and deletes the deliveries of expired events                                                                                                                                                                                                                                                                       |
+| `deliveries`       | `event_id`, `deleted_at`                                           | The event log, which loads each event's deliveries, and retention, which counts and deletes the deliveries of expired events                                                                                                                                                                                                                                                       |
-| `delivery_results` | `delivery_id`, `deleted_at`                                        | The event log, which loads the attempts of a page's deliveries, and retention, which deletes the attempts of expired events                                                                                                                                                                                                                                                                        |
+| `delivery_results` | `delivery_id`, `deleted_at`                                        | The event log, which loads the attempts of a page's deliveries, and retention, which deletes the attempts of expired events                                                                                                                                                                                                                                                        |
-| `events`           | `deleted_at`, `created_at`                                         | The webhook page's statistics, which count recent events                                                                                                                                                                                                                                                                                                                                           |
+| `events`           | `deleted_at`, `created_at`                                         | The webhook page's statistics, which count recent events                                                                                                                                                                                                                                                                                                                           |
-| `events`           | `resubmitted_from_id`, `deleted_at`                                | The event log, which counts the events resubmitted from each event on a page                                                                                                                                                                                                                                                                                                                       |
+| `events`           | `resubmitted_from_id`, `deleted_at`                                | The event log, which counts the events resubmitted from each event on a page                                                                                                                                                                                                                                                                                                       |
-| `events`           | `entrypoint_id`, `deleted_at`, `resubmitted_from_id`, `created_at` | The webhook page's entrypoint list, which counts the events that arrived on each entrypoint's URL within the retention period                                                                                                                                                                                                                                                                      |
+| `events`           | `entrypoint_id`, `deleted_at`, `resubmitted_from_id`, `created_at` | The webhook page's entrypoint list, which counts the events that arrived on each entrypoint's URL within the retention period                                                                                                                                                                                                                                                      |
-| `events`           | `created_at`                                                       | Retention, which selects expired events by age                                                                                                                                                                                                                                                                                                                                                     |
+| `events`           | `created_at`                                                       | Retention, which selects expired events by age                                                                                                                                                                                                                                                                                                                                     |
 
 GORM's soft delete adds `deleted_at IS NULL` to these queries; retention leaves
 it out. SQLite keeps no statistics on these tables, and without them it rates
@@ -1992,11 +1996,10 @@ target UUID keeps the file name unique. A webhook named `Orders (EU)` with a
 target named `Long-term archive` archives into
 `archive-orders-eu-long-term-archive-{target_uuid}.db`.
 
-An optional `rotation` in the target's config JSON (e.g. `{"rotation":"daily"}`)
+A target's `archive_rotation` is `none`, the default, which keeps the one file,
-is `none`, the default, which keeps the one file, or `monthly`, `daily` or
+or `monthly`, `daily` or `hourly`. A target that rotates writes each event to a
-`hourly`. A target that rotates writes each event to a file named for the period
+file named for the period of the event's receive time, in UTC, put before the
-of the event's receive time, in UTC, put before the `.db`:
+`.db`: `archive-orders-eu-long-term-archive-{target_uuid}-2026-10.db` monthly,
-`archive-orders-eu-long-term-archive-{target_uuid}-2026-10.db` monthly,
 `…-2026-10-01.db` daily and `…-2026-10-01-19.db` hourly. Each file holds exactly
 its period's events, and the first event of a new period starts the next file,
 so a finished period's file can be moved away like any archive. A changed
@@ -2031,12 +2034,11 @@ archiving without stopping the service; a moved or removed archive file is
 recreated automatically on the next write, from the SQL files in
 `internal/db/migrations/archive/`. A zero-length archive file is written to as a
 new archive: SQLite opens it as an empty database, so it holds nothing to lose.
-An optional `expiry` in the target's config JSON (e.g. `{"expiry":"720h"}`) is
+A target's `archive_expiry` is checked by the form that saves it — the default,
-validated when the target is created — the default (unset or the literal
+`never` on the forms and 0 in the column, keeps rows forever — and rows older
-`never`) keeps rows forever — and rows older than the expiry are pruned each
+than the expiry are pruned each time the archive is (re)opened. An archive write
-time the archive is (re)opened. An archive write failure is never silent
+failure is never silent success: the delivery records a failed attempt with the
-success: the delivery records a failed attempt with the error and is marked
+error and is marked failed.
-failed.
 
 Because reopens only happen on writes, an archive whose target has stopped
 receiving events would never be pruned. A background **archive sweeper** closes
@@ -2047,8 +2049,7 @@ traffic. The sweep never creates an archive — a target whose archive file does
 not yet exist is skipped, not initialised — it takes the same per-target lock
 the write path uses, so it can never interleave with a write, and it leaves the
 archive closed afterwards so the move-the-file-away workflow keeps working.
-Archives with no expiry, or the expiry `never`, are not touched by the sweep at
+Archives with the expiry `never` are not touched by the sweep at all.
-all.
 
 For a target with several files, the write path prunes only the file it writes
 to, and the sweep prunes every one of them, taking the target's lock for one
@@ -2116,9 +2117,8 @@ compatible services). Each message includes event metadata (HTTP method, content
 type, timestamp, body size) and the payload pretty-printed in a code block. JSON
 payloads are automatically formatted with indentation for readability; non-JSON
 payloads are shown as raw text. Large payloads are truncated to keep messages
-reasonable. Config stores `webhookUrl` — the Slack/Mattermost incoming webhook
+reasonable. The target's `url` is the Slack/Mattermost incoming webhook
-endpoint. That is the JSON key; the error text for a missing one reads
+endpoint.
-`webhook_url is required`, which is the message, not the key.
 
 The database uses the
 [modernc.org/sqlite](https://pkg.go.dev/modernc.org/sqlite) driver.
@@ -2153,12 +2153,8 @@ External Service
                      1. Look up Entrypoint by UUID — 404 if unknown,
                         410 if inactive
                      2. Read the body under the 1 MB cap
-                     3. Capture full request as Event
+                     3. Hand the full request, as an Event, to
-                     4. Create Delivery records for each active Target
+                        Engine.StoreEvent
-                     5. Build self-contained delivery.Task structs
-                        (target config + event data inline for
-                         bodies < 16 KiB)
-                     6. Notify Engine via channel (no DB read needed)
                                                 │
                                                 ▼
                                         ┌──────────────┐
@@ -2167,6 +2163,13 @@ External Service
                                         │  (worker     │
                                         │   pool)      │
                                         └──────┬───────┘
+                     4. Store the Event, a pending Delivery for each
+                        active Target, and the totals, in one
+                        transaction
+                     5. Build a delivery.Task for each Delivery
+                        (target settings + event data, the body
+                         inline when it is under 16 KiB)
+                     6. Queue the tasks on the delivery channel
                                                │
                               ┌── bounded worker pool (N workers) ──┐
                               ▼                ▼                    ▼
@@ -2180,6 +2183,12 @@ External Service
                                         └────────────┘
 ```
 
+A **Resubmit** stores its copy of an event through the same `Engine.StoreEvent`,
+and a **Replay** adds one delivery of a stored event through
+`Engine.CreateReplay`, which writes the delivery and its target's totals in one
+transaction and queues it. Those two methods are the only code that creates a
+delivery; the handlers read and check the request, then make the one call.
+
 ### Bounded Worker Pool
 
 The delivery engine uses a **fixed-size worker pool** (default: 10 workers) to
@@ -2189,8 +2198,9 @@ preventing goroutine explosions regardless of queue depth.
 **Architecture:**
 
 - **Channels as queues:** Two buffered channels serve as bounded queues: a
-  delivery channel (new tasks from the webhook handler) and a retry channel
+  delivery channel (the tasks of newly stored deliveries and of the `pending`
-  (tasks from backoff timers). Both are buffered to 10,000.
+  deliveries the recovery routine hands back) and a retry channel (tasks from
+  backoff timers). Both are buffered to 10,000.
 - **Fan-out via channel, not goroutines:** When an event arrives with multiple
   targets, each `delivery.Task` is sent to the delivery channel. Workers pick
   them up and process them — no goroutine-per-target.
@@ -2199,7 +2209,7 @@ preventing goroutine explosions regardless of queue depth.
   Workers are the ONLY goroutines doing actual HTTP delivery.
 - **Retry backpressure with DB fallback:** When a retry timer fires and the
   retry channel is full, the timer is dropped — the delivery stays in `retrying`
-  status in the database. A periodic sweep (every 60s) scans for these
+  status in the database. The sweep (every 60s, see Recovery below) finds these
   "orphaned" retries and re-queues them. No blocked goroutines, no unbounded
   timer chains.
 - **Bounded concurrency:** At most N deliveries (N = number of workers) are
@@ -2226,24 +2236,36 @@ This means:
   that did not finish are still running — an unclean shutdown is reported rather
   than hidden.
 
-**Recovery paths:**
+**Recovery:** one routine finds the deliveries the engine is not working on and
+hands them back. It runs once when the engine starts, and then every 60 seconds;
+that periodic run is the sweep. For every webhook it reads the `pending` and
+`retrying` deliveries. One that already has a successful attempt is marked
+`delivered` and not sent again. A `retrying` delivery gets a backoff timer for
+what is left of its backoff, and is queued at once if nothing is left. A
+`pending` delivery is queued on the delivery channel. A delivery the engine has
+queued, is attempting, or holds a backoff timer for is left alone, at start as
+on every sweep. This is what catches "orphaned" retries, whose in-memory timer
+was dropped because the retry channel was full, and deliveries a stop or a crash
+cut off: the database is the durable fallback that ensures no delivery is
+permanently lost, even under extreme backpressure.
 
-1. **Startup recovery:** When the engine starts, it scans all per-webhook
+The run at start and the sweep differ in two ways:
-   databases for `pending` and `retrying` deliveries. Pending deliveries are
+
-   sent to the delivery channel; retrying deliveries get backoff timers
+- At start every `pending` delivery is taken, however recent, so one a stop cut
-   scheduled.
+  off moments ago is sent again at once (see Shutdown). The sweep takes only
-2. **Periodic retry sweep (DB-mediated fallback):** Every 60 seconds the engine
+  `pending` deliveries untouched for 15 minutes, at most 500 per webhook each
-   scans for `retrying` deliveries whose backoff period has elapsed. This
+  time, so a delivery whose outcome the database will not record is sent again
-   catches "orphaned" retries — ones whose in-memory timer was dropped because
+  every 15 minutes rather than every minute.
-   the retry channel was full. The database is the durable fallback that ensures
+- At start every webhook's database is opened, so that a missing one is reported
-   no retry is permanently lost, even under extreme backpressure.
+  then (see Per-Webhook Event Databases). The sweep skips a webhook whose
+  database file is missing rather than create it.
 
 **Changing a target's type does not migrate in-flight deliveries.** Only `http`
 and `slack` targets own durable retries; `database` and `log` targets are
 fire-and-forget and never produce a `retrying` delivery. If a target's `type` is
 edited from a retrying type to a non-retrying (or unknown) one while one of its
-deliveries is still `retrying`, both recovery paths above terminally mark that
+deliveries is still `retrying`, the recovery routine above terminally marks that
-delivery `failed` and record a `DeliveryResult` naming the current target type
+delivery `failed` and records a `DeliveryResult` naming the current target type
 as the reason, logging it at warn level. The delivery is not re-dispatched under
 the new type — the operator never asked for that delivery — and the event itself
 remains stored in the per-webhook event database. Nothing is lost: the delivery
@@ -2256,8 +2278,8 @@ re-inject it to every currently active target.
 `http` and `slack` targets with `max_attempts` > 1 are protected by a
 **per-target circuit breaker** that prevents hammering a down target with
 repeated failed delivery attempts. The circuit breaker is in-memory only and
-resets on restart (which is fine — startup recovery rescans the database
+resets on restart (which is fine — the recovery routine rescans the database at
-anyway).
+start anyway).
 
 **States:**
 
@@ -3042,20 +3064,21 @@ webhooker/
 │   │   └── logfield.go        # Encoded-byte budget for client-supplied log values
 │   ├── delivery/
 │   │   ├── engine.go          # Event-driven delivery engine (channel + timer based)
+│   │   ├── store.go           # Storing an event with its deliveries, and a replay, then queueing them
 │   │   ├── circuit_breaker.go # Per-target circuit breaker for http/slack targets with retries
 │   │   ├── target.go          # Target interface, Task, Scheduler
 │   │   ├── target_http.go     # HTTP target (retries, circuit breaker)
 │   │   ├── target_slack.go    # Slack/Mattermost incoming-webhook target
 │   │   ├── target_database.go # Database archive target, writing through internal/archive
 │   │   ├── target_log.go      # Log target (stdout)
-│   │   ├── target_config_view.go  # Masked target config for templates
+│   │   ├── target_config_view.go  # Masked target settings for templates
 │   │   ├── queue_depth.go     # Periodic sampler behind the queue-depth gauges
 │   │   ├── url_mask.go        # Strips credentials from *url.Error
 │   │   └── ssrf.go            # SSRF prevention (IP validation, safe HTTP transport)
 │   ├── handlers/
 │   │   ├── handlers.go        # Base handler struct, JSON helpers, template rendering
 │   │   ├── auth.go            # Login, logout handlers
-│   │   ├── delivery_replay.go # Per-delivery replay: new delivery, current target config
+│   │   ├── delivery_replay.go # Per-delivery replay: new delivery, current target settings
 │   │   ├── event_resubmit.go  # Event resubmit: new event, all currently active targets
 │   │   ├── entrypoint_view.go # Masked entrypoint view for templates
 │   │   ├── event_log_view.go  # Event log projection, byte-capped in SQL
@@ -3070,7 +3093,7 @@ webhooker/
 │   │   ├── webhook_delete.go  # Webhook delete, event database and archive writer removal
 │   │   ├── event_log.go       # Event log page: loaders, filters, delivery views
 │   │   ├── entrypoint.go      # Entrypoint create, edit, delete and toggle
-│   │   ├── target_create.go   # Target create, per-type config builders
+│   │   ├── target_create.go   # Target create, each type's settings from the form
 │   │   ├── target_delete.go   # Target delete
 │   │   ├── target_toggle.go   # Target toggle
 │   │   ├── shared.go          # Helpers shared by several handlers
@@ -3138,23 +3161,26 @@ Components are wired via Uber fx in this order:
 10. `metrics.NewRegistry` — The registry `/metrics` serves
 11. `metrics.New` — The delivery collectors, registered on that registry
 12. `middleware.New` — HTTP middleware
-13. `delivery.New` — Event-driven delivery engine
+13. `delivery.New` — Event-driven delivery engine, which also stores each event
+    with its deliveries and creates replay deliveries
 14. `archive.NewWriters` — The database targets' archive writers, and the lock
     every rename of their files runs under
 15. `archive.NewSweeper` — Periodic pruning of idle archives
-16. `delivery.Engine` → `delivery.Notifier` — interface bridge
+16. `archive.Writers` → `archive.Archives` — interface bridge so deleting or
-17. `archive.Writers` → `archive.Archives` — interface bridge so deleting or
     renaming a webhook or target reaches its archive files
+17. `delivery.Engine` → `delivery.CircuitBreakers` — interface bridge so the
+    pages can show a target whose deliveries are paused
 18. `server.New` — HTTP server and router
 
 The server starts via
 `fx.Invoke(func(*server.Server, *delivery.Engine, *database.RetentionReaper, *archive.Sweeper) {})`,
-which triggers the fx lifecycle hooks in dependency order. The
+which triggers the fx lifecycle hooks in dependency order. The handlers take
-`delivery.Notifier` interface allows the webhook handler to send self-contained
+`*delivery.Engine` itself: the receiver and resubmit handlers store an event
-`delivery.Task` slices to the engine without a direct package dependency. Each
+through `StoreEvent`, and the replay handler adds a delivery through
-task carries all target config and event data inline (for bodies under 16 KiB,
+`CreateReplay`. Each task the engine queues carries the target's settings and
-`delivery.MaxInlineBodySize`), so the engine can deliver without reading from
+the event's data, and the body too when it is under 16 KiB
-any database — it only writes to record results.
+(`delivery.MaxInlineBodySize`); a larger body is read from the event row when
+the attempt runs.
 
 ### Middleware Stack
 
@@ -3336,9 +3362,9 @@ normal operation.
 
 The delivery engine cancels a delivery request in flight. That attempt is not
 recorded or counted in the metrics, and the delivery keeps its `pending` or
-`retrying` status, so startup recovery sends it again on the next start (see
+`retrying` status, so recovery at the next start sends it again (see Recovery
-Recovery paths under Bounded Worker Pool). If the receiver already had it, it
+under Bounded Worker Pool). If the receiver already had it, it receives it
-receives it twice: the at-least-once duplicate described under Rationale.
+twice: the at-least-once duplicate described under Rationale.
 
 The HTTP drain budget is deliberately **shorter** than the sequence budget. Were
 the two equal, a drain that used its whole budget would exhaust the sequence

cmd/webhooker/main.go

@@ -211,9 +211,6 @@ func newApp() *fx.App {
 			delivery.New,
 			archive.NewWriters,
 			archive.NewSweeper,
-			// Wire *delivery.Engine as delivery.Notifier so the
-			// webhook handler can notify the engine of new deliveries.
-			func(e *delivery.Engine) delivery.Notifier { return e },
 			// Wire *archive.Writers as archive.Archives so deleting
 			// or renaming a webhook or target reaches its archive
 			// files.

internal/archive/archive.go

@@ -143,26 +143,15 @@ func archiveNamePart(name string) string {
 }
 
 // Write writes the full event of a delivery to a database target as
-// a row into the target's archive database, honouring the optional
+// a row into the target's archive database, honouring the target's
-// per-target expiry and rotation parsed from the target config JSON.
+// ArchiveExpiry and ArchiveRotation. With rotation, the event goes to
-// With rotation, the event goes to the file for the period of its
+// the file for the period of its receive time.
-// receive time.
 func (ws *Writers) Write(d *database.Delivery) error {
 	webhookID := d.Event.WebhookID
 	if webhookID == "" {
 		return errArchiveMissingWebhookID
 	}
 
-	expiry, err := ParseExpiry(d.Target.Config)
-	if err != nil {
-		return err
-	}
-
-	rotation, err := ParseRotation(d.Target.Config)
-	if err != nil {
-		return err
-	}
-
 	// An event whose stored row was gone before its delivery ran has
 	// no receive time (see delivery's Engine.hydrateEvent), and goes
 	// to the file for now.
@@ -187,7 +176,10 @@ func (ws *Writers) Write(d *database.Delivery) error {
 		ContentType:  d.Event.ContentType,
 	}
 
-	return w.write(row, expiry, archivePeriod(rotation, receivedAt))
+	return w.write(
+		row, d.Target.ArchiveExpiry,
+		archivePeriod(d.Target.ArchiveRotation, receivedAt),
+	)
 }
 
 // Rename implements Archives. It renames every one of a database

internal/archive/archive_test.go

@@ -123,9 +123,10 @@ func databaseTargetDelivery(
 		TargetID: tgt.ID,
 		Event:    event,
 		Target: database.Target{
-			Name:   tgt.Name,
+			Name:            tgt.Name,
-			Type:   database.TargetTypeDatabase,
+			Type:            database.TargetTypeDatabase,
-			Config: tgt.Config,
+			ArchiveExpiry:   tgt.ArchiveExpiry,
+			ArchiveRotation: tgt.ArchiveRotation,
 		},
 	}
 }
@@ -355,13 +356,16 @@ func TestParseArchiveExpiry(t *testing.T) {
 		want    time.Duration
 		wantErr bool
 	}{
-		{"empty config", "", 0, false},
+		{"empty", "", 0, false},
-		{"explicit never", `{"expiry":"never"}`, 0, false},
+		{"explicit never", "never", 0, false},
-		{"empty expiry", `{"expiry":""}`, 0, false},
+		{"hour", "1h", time.Hour, false},
-		{"duration", `{"expiry":"1h"}`, time.Hour, false},
+		{"thirty days", "720h", 720 * time.Hour, false},
-		{"unparseable", `{"expiry":"nonsense"}`, 0, true},
+		{"minutes", "30m", 30 * time.Minute, false},
-		{"zero duration", `{"expiry":"0s"}`, 0, true},
+		{"unparseable", "nonsense", 0, true},
-		{"negative duration", `{"expiry":"-5h"}`, 0, true},
+		{"days are not a Go unit", "7d", 0, true},
+		{"zero duration", "0s", 0, true},
+		{"bare zero", "0", 0, true},
+		{"negative duration", "-5h", 0, true},
 	}
 
 	for _, tc := range cases {
@@ -381,26 +385,6 @@ func TestParseArchiveExpiry(t *testing.T) {
 	}
 }
 
-func TestValidateArchiveExpiry(t *testing.T) {
-	t.Parallel()
-
-	valid := []string{"", "never", "1h", "720h", "30m"}
-	for _, in := range valid {
-		require.NoError(t,
-			archive.ValidateExpiry(in),
-			"expiry %q should be accepted", in,
-		)
-	}
-
-	invalid := []string{"nonsense", "7d", "-5h", "0s", "0"}
-	for _, in := range invalid {
-		require.Error(t,
-			archive.ValidateExpiry(in),
-			"expiry %q should be rejected", in,
-		)
-	}
-}
-
 // TestArchiveFileName pins the archive file name and the rules
 // that make a webhook or target name safe to put in it.
 func TestArchiveFileName(t *testing.T) {
@@ -473,8 +457,8 @@ func TestWrite_EachTargetHasItsOwnArchive(t *testing.T) {
 	t.Parallel()
 
 	env := setupArchiveTest(t)
-	first := env.seedDatabaseTarget(t, "")
+	first := env.seedDatabaseTarget(t, 0, "")
-	second := env.addDatabaseTarget(t, first.WebhookID, "")
+	second := env.addDatabaseTarget(t, first.WebhookID, 0, "")
 
 	event := newEvent(`{"n":1}`)
 
@@ -503,7 +487,7 @@ func TestRename_MovesTheFile(t *testing.T) {
 	t.Parallel()
 
 	env := setupArchiveTest(t)
-	tgt := env.seedDatabaseTarget(t, "")
+	tgt := env.seedDatabaseTarget(t, 0, "")
 	oldPath := env.archivePath(tgt)
 
 	first := newEvent(`{"n":1}`)
@@ -545,7 +529,7 @@ func TestRename_NeverReplacesAFile(t *testing.T) {
 			t.Parallel()
 
 			env := setupArchiveTest(t)
-			tgt := env.seedDatabaseTarget(t, "")
+			tgt := env.seedDatabaseTarget(t, 0, "")
 			oldPath := env.archivePath(tgt)
 
 			first := newEvent(`{"n":1}`)
@@ -593,7 +577,7 @@ func TestRename_BeforeTheNameIsSaved(t *testing.T) {
 	t.Parallel()
 
 	env := setupArchiveTest(t)
-	tgt := env.seedDatabaseTarget(t, "")
+	tgt := env.seedDatabaseTarget(t, 0, "")
 
 	require.NoError(
 		t, env.writers.Rename(tgt.ID, "Orders", "Archive"),
@@ -721,7 +705,7 @@ func TestRenameLock_HeldByOneEditAtATime(t *testing.T) {
 	t.Parallel()
 
 	env := setupArchiveTest(t)
-	tgt := env.seedDatabaseTarget(t, "")
+	tgt := env.seedDatabaseTarget(t, 0, "")
 	event := newEvent(`{"n":1}`)
 
 	env.writers.RenameLock().Lock()

internal/archive/evict_test.go

@@ -37,9 +37,9 @@ func TestEvictWebhook_ClosesAndRemovesWriter(t *testing.T) {
 	t.Parallel()
 
 	env := setupArchiveTest(t)
-	first := env.seedDatabaseTarget(t, "")
+	first := env.seedDatabaseTarget(t, 0, "")
-	second := env.addDatabaseTarget(t, first.WebhookID, "")
+	second := env.addDatabaseTarget(t, first.WebhookID, 0, "")
-	other := env.seedDatabaseTarget(t, "")
+	other := env.seedDatabaseTarget(t, 0, "")
 
 	for _, tgt := range []*database.Target{first, second, other} {
 		deliverTo(t, env, tgt)
@@ -80,8 +80,8 @@ func TestEvictTarget_LeavesOtherTargets(t *testing.T) {
 	t.Parallel()
 
 	env := setupArchiveTest(t)
-	doomed := env.seedDatabaseTarget(t, "")
+	doomed := env.seedDatabaseTarget(t, 0, "")
-	kept := env.addDatabaseTarget(t, doomed.WebhookID, "")
+	kept := env.addDatabaseTarget(t, doomed.WebhookID, 0, "")
 
 	deliverTo(t, env, doomed)
 	deliverTo(t, env, kept)
@@ -310,7 +310,7 @@ func TestEvictWebhook_RacingWriteDoesNotReopenHandle(
 	t.Parallel()
 
 	env := setupArchiveTest(t)
-	tgt := env.seedDatabaseTarget(t, "")
+	tgt := env.seedDatabaseTarget(t, 0, "")
 
 	// Prime the registry so the test can hold the very writer the
 	// eviction is about to detach.
@@ -355,7 +355,7 @@ func TestEvictWebhook_LaterDeliveryRecreatesWriter(t *testing.T) {
 	t.Parallel()
 
 	env := setupArchiveTest(t)
-	tgt := env.seedDatabaseTarget(t, "")
+	tgt := env.seedDatabaseTarget(t, 0, "")
 
 	deliverTo(t, env, tgt)
 	require.True(t, env.writers.ExportHasArchiveWriter(tgt.ID))
@@ -380,7 +380,7 @@ func TestEvictAll_WriteAfterIsRefused(t *testing.T) {
 	t.Parallel()
 
 	env := setupArchiveTest(t)
-	tgt := env.seedDatabaseTarget(t, "")
+	tgt := env.seedDatabaseTarget(t, 0, "")
 
 	deliverTo(t, env, tgt)
 

internal/archive/rotation.go

@@ -1,7 +1,6 @@
 package archive
 
 import (
-	"encoding/json"
 	"errors"
 	"fmt"
 	"os"
@@ -54,35 +53,10 @@ func ValidateRotation(rotation string) error {
 	}
 }
 
-// ParseRotation reads the rotation from a database target's
-// config JSON. An empty config or an empty rotation is none.
-func ParseRotation(configJSON string) (string, error) {
-	if configJSON == "" {
-		return archiveRotationNone, nil
-	}
-
-	var cfg DatabaseTargetConfig
-
-	err := json.Unmarshal([]byte(configJSON), &cfg)
-	if err != nil {
-		return "", fmt.Errorf("parsing database target config: %w", err)
-	}
-
-	err = ValidateRotation(cfg.Rotation)
-	if err != nil {
-		return "", err
-	}
-
-	if cfg.Rotation == "" {
-		return archiveRotationNone, nil
-	}
-
-	return cfg.Rotation, nil
-}
-
 // archivePeriod returns the period, in UTC, that a rotation puts an
 // event received at receivedAt in: "2026-10" for monthly,
-// "2026-10-01" for daily, "2026-10-01-19" for hourly, and "" for none.
+// "2026-10-01" for daily, "2026-10-01-19" for hourly, and "" for none
+// or an empty rotation.
 func archivePeriod(rotation string, receivedAt time.Time) string {
 	switch rotation {
 	case archiveRotationMonthly:
@@ -115,16 +89,11 @@ func PathAt(
 	webhook *database.Webhook,
 	target *database.Target,
 	receivedAt time.Time,
-) (string, error) {
+) string {
-	rotation, err := ParseRotation(target.Config)
-	if err != nil {
-		return "", err
-	}
-
 	return archivePeriodPath(
 		Path(dbMgr, webhook, target),
-		archivePeriod(rotation, receivedAt),
+		archivePeriod(target.ArchiveRotation, receivedAt),
-	), nil
+	)
 }
 
 // archiveFiles lists the database target's archive files that exist,

internal/archive/rotation_test.go

@@ -14,16 +14,12 @@ import (
 	"sneak.berlin/go/webhooker/internal/database/databasetest"
 )
 
-// The archive rotations, and the configs of a daily target and of one
+// The archive rotations.
-// whose rotation is not one of the four.
 const (
 	rotationNone    = "none"
 	rotationMonthly = "monthly"
 	rotationDaily   = "daily"
 	rotationHourly  = "hourly"
-
-	dailyConfig  = `{"rotation":"daily"}`
-	weeklyConfig = `{"rotation":"weekly"}`
 )
 
 // The periods the tests archive into most: two days, and an hour of
@@ -108,7 +104,7 @@ func TestWrite_RotatesAtEachPeriodBoundary(t *testing.T) {
 			t.Parallel()
 
 			env := setupArchiveTest(t)
-			tgt := env.seedDatabaseTarget(t, `{"rotation":"`+tc.rotation+`"}`)
+			tgt := env.seedDatabaseTarget(t, 0, tc.rotation)
 			path := env.archivePath(tgt)
 
 			first := env.deliverReceivedAt(t, tgt, tc.before)
@@ -127,7 +123,7 @@ func TestWrite_RotatesAtEachPeriodBoundary(t *testing.T) {
 		t.Parallel()
 
 		env := setupArchiveTest(t)
-		tgt := env.seedDatabaseTarget(t, `{"rotation":"`+rotationNone+`"}`)
+		tgt := env.seedDatabaseTarget(t, 0, rotationNone)
 
 		first := env.deliverReceivedAt(t, tgt, cases[0].before)
 		second := env.deliverReceivedAt(t, tgt, cases[0].after)
@@ -144,7 +140,7 @@ func TestWrite_EventWithoutReceiveTime(t *testing.T) {
 	t.Parallel()
 
 	env := setupArchiveTest(t)
-	tgt := env.seedDatabaseTarget(t, `{"rotation":"`+rotationMonthly+`"}`)
+	tgt := env.seedDatabaseTarget(t, 0, rotationMonthly)
 	path := env.archivePath(tgt)
 
 	before := time.Now().UTC().Format("2006-01")
@@ -169,13 +165,13 @@ func TestWrite_RotationChangeKeepsOldFiles(t *testing.T) {
 	t.Parallel()
 
 	env := setupArchiveTest(t)
-	tgt := env.seedDatabaseTarget(t, "")
+	tgt := env.seedDatabaseTarget(t, 0, rotationNone)
 	path := env.archivePath(tgt)
 	at := time.Date(2026, 3, 4, 12, 0, 0, 0, time.UTC)
 
 	first := env.deliverReceivedAt(t, tgt, at)
 
-	tgt.Config = dailyConfig
+	tgt.ArchiveRotation = rotationDaily
 	second := env.deliverReceivedAt(t, tgt, at)
 
 	assert.Equal(t, []string{first}, archivedEventIDs(t, path))
@@ -193,9 +189,7 @@ func TestArchiveSweep_PrunesEveryFile(t *testing.T) {
 	t.Parallel()
 
 	env := setupArchiveTest(t)
-	tgt := env.seedDatabaseTarget(
+	tgt := env.seedDatabaseTarget(t, time.Hour, rotationDaily)
-		t, `{"expiry":"1h","rotation":"`+rotationDaily+`"}`,
-	)
 	path := env.archivePath(tgt)
 	emptied := periodPath(path, dayPeriod)
 	kept := periodPath(path, nextDayPeriod)
@@ -225,13 +219,13 @@ func TestRename_MovesEveryFile(t *testing.T) {
 	t.Parallel()
 
 	env := setupArchiveTest(t)
-	tgt := env.seedDatabaseTarget(t, "")
+	tgt := env.seedDatabaseTarget(t, 0, rotationNone)
 	oldPath := env.archivePath(tgt)
 	day := time.Date(2026, 3, 4, 12, 0, 0, 0, time.UTC)
 
 	unrotated := env.deliverReceivedAt(t, tgt, day)
 
-	tgt.Config = dailyConfig
+	tgt.ArchiveRotation = rotationDaily
 	first := env.deliverReceivedAt(t, tgt, day)
 	second := env.deliverReceivedAt(t, tgt, day.Add(24*time.Hour))
 
@@ -267,7 +261,7 @@ func TestRename_NeverReplacesARotatedFile(t *testing.T) {
 	t.Parallel()
 
 	env := setupArchiveTest(t)
-	tgt := env.seedDatabaseTarget(t, dailyConfig)
+	tgt := env.seedDatabaseTarget(t, 0, rotationDaily)
 	oldPath := env.archivePath(tgt)
 	day := time.Date(2026, 3, 4, 12, 0, 0, 0, time.UTC)
 
@@ -341,34 +335,27 @@ func TestArchivePathAt(t *testing.T) {
 	at := time.Date(2026, 10, 1, 19, 30, 0, 0, time.UTC)
 
 	cases := map[string]string{
-		"":                                       "",
+		"":              "",
-		`{"rotation":"` + rotationNone + `"}`:    "",
+		rotationNone:    "",
-		`{"rotation":"` + rotationMonthly + `"}`: "-2026-10",
+		rotationMonthly: "-2026-10",
-		dailyConfig:                              "-2026-10-01",
+		rotationDaily:   "-2026-10-01",
-		`{"rotation":"` + rotationHourly + `"}`:  "-2026-10-01-19",
+		rotationHourly:  "-2026-10-01-19",
 	}
 
-	for config, period := range cases {
+	for rotation, period := range cases {
 		target := &database.Target{
-			BaseModel: database.BaseModel{ID: "tgt-id"},
+			BaseModel:       database.BaseModel{ID: "tgt-id"},
-			Name:      "Archive",
+			Name:            "Archive",
-			Config:    config,
+			ArchiveRotation: rotation,
 		}
 
-		got, err := archive.PathAt(dbMgr, webhook, target, at)
-		require.NoError(t, err, config)
 		assert.Equal(t,
 			filepath.Join(
 				dataDir, "archive-orders-archive-tgt-id"+period+".db",
 			),
-			got, config,
+			archive.PathAt(dbMgr, webhook, target, at), rotation,
 		)
 	}
-
-	_, err := archive.PathAt(dbMgr, webhook, &database.Target{
-		Config: weeklyConfig,
-	}, at)
-	require.Error(t, err)
 }
 
 // TestValidateArchiveRotation accepts the four rotations, and empty,

internal/archive/sweeper.go

@@ -199,22 +199,11 @@ func (s *Sweeper) sweep(ctx context.Context) {
 	}
 }
 
-// sweepTarget prunes the archive of a single database target.
+// sweepTarget prunes the archive of a single database target. A
-// A missing, empty, or "never" expiry parses as a zero duration
+// target with an ArchiveExpiry of 0 keeps its archive forever and is
-// and is skipped entirely, so those archives are never pruned.
+// skipped entirely, so that archive is never pruned.
 func (s *Sweeper) sweepTarget(target *database.Target) {
-	expiry, err := ParseExpiry(target.Config)
+	expiry := target.ArchiveExpiry
-	if err != nil {
-		s.log.Error(
-			"archive sweep: invalid database target config",
-			"webhook_id", target.WebhookID,
-			"target_id", target.ID,
-			"error", err,
-		)
-
-		return
-	}
-
 	if expiry <= 0 {
 		return
 	}
@@ -223,7 +212,7 @@ func (s *Sweeper) sweepTarget(target *database.Target) {
 		return
 	}
 
-	err = s.writers.sweepArchive(target.ID, expiry)
+	err := s.writers.sweepArchive(target.ID, expiry)
 	if err == nil {
 		return
 	}

internal/archive/sweeper_test.go

@@ -106,10 +106,10 @@ func (env *archiveEnv) archivePath(tgt *database.Target) string {
 	)
 }
 
-// seedDatabaseTarget creates a webhook with one database target
+// seedDatabaseTarget creates a webhook with one database target with
-// carrying the given target config JSON, and returns the target.
+// the given archive expiry and rotation, and returns the target.
 func (env *archiveEnv) seedDatabaseTarget(
-	t *testing.T, configJSON string,
+	t *testing.T, expiry time.Duration, rotation string,
 ) *database.Target {
 	t.Helper()
 
@@ -124,23 +124,27 @@ func (env *archiveEnv) seedDatabaseTarget(
 			Create(wh).Error,
 	)
 
-	return env.addDatabaseTarget(t, wh.ID, configJSON)
+	return env.addDatabaseTarget(t, wh.ID, expiry, rotation)
 }
 
 // addDatabaseTarget creates one more database target on an
 // existing webhook and returns it.
 func (env *archiveEnv) addDatabaseTarget(
-	t *testing.T, webhookID, configJSON string,
+	t *testing.T,
+	webhookID string,
+	expiry time.Duration,
+	rotation string,
 ) *database.Target {
 	t.Helper()
 
 	tgt := &database.Target{
-		WebhookID:   webhookID,
+		WebhookID:       webhookID,
-		Name:        "Archive",
+		Name:            "Archive",
-		Type:        database.TargetTypeDatabase,
+		Type:            database.TargetTypeDatabase,
-		Active:      true,
+		Active:          true,
-		Config:      configJSON,
+		ArchiveExpiry:   expiry,
-		MaxAttempts: 1,
+		ArchiveRotation: rotation,
+		MaxAttempts:     1,
 	}
 	require.NoError(
 		t,
@@ -323,7 +327,7 @@ func TestArchiveSweeper_LoopOutlivesStartHookContext(
 
 	env := setupArchiveTest(t)
 
-	tgt := env.seedDatabaseTarget(t, `{"expiry":"1h"}`)
+	tgt := env.seedDatabaseTarget(t, time.Hour, "")
 
 	now := time.Now()
 	path := env.seedArchiveRows(
@@ -377,7 +381,7 @@ func TestArchiveSweep_DoesNotResurrectEvictedWriter(
 
 	env := setupArchiveTest(t)
 
-	tgt := env.seedDatabaseTarget(t, `{"expiry":"1h"}`)
+	tgt := env.seedDatabaseTarget(t, time.Hour, "")
 	env.seedArchiveRows(
 		t, tgt, time.Now().Add(-48*time.Hour),
 	)
@@ -411,7 +415,7 @@ func TestArchiveSweep_LeavesNoRegistryEntry(t *testing.T) {
 
 	env := setupArchiveTest(t)
 
-	tgt := env.seedDatabaseTarget(t, `{"expiry":"1h"}`)
+	tgt := env.seedDatabaseTarget(t, time.Hour, "")
 	path := env.seedArchiveRows(
 		t, tgt,
 		time.Now().Add(-48*time.Hour),
@@ -444,7 +448,7 @@ func TestArchiveSweep_KeepsWriterAdoptedByDelivery(
 
 	env := setupArchiveTest(t)
 
-	tgt := env.seedDatabaseTarget(t, `{"expiry":"1h"}`)
+	tgt := env.seedDatabaseTarget(t, time.Hour, "")
 	env.seedArchiveRows(
 		t, tgt, time.Now().Add(-48*time.Hour),
 	)
@@ -498,7 +502,7 @@ func TestArchiveSweep_KeepsWriterAdoptedDuringSweep(
 
 	env := setupArchiveTest(t)
 
-	tgt := env.seedDatabaseTarget(t, `{"expiry":"1h"}`)
+	tgt := env.seedDatabaseTarget(t, time.Hour, "")
 	env.seedArchiveRows(
 		t, tgt, time.Now().Add(-48*time.Hour),
 	)
@@ -551,8 +555,8 @@ func TestArchiveSweep_KeepsWriterAdoptedDuringSweep(
 
 // TestArchiveSweep_ContinuesAfterPerTargetFailure proves a
 // failure for one target does not abort the sweep for the
-// others: an unparseable expiry and an unreadable archive both
+// others: an unreadable archive has to be logged and stepped
-// have to be logged and stepped over.
+// over.
 func TestArchiveSweep_ContinuesAfterPerTargetFailure(
 	t *testing.T,
 ) {
@@ -560,21 +564,16 @@ func TestArchiveSweep_ContinuesAfterPerTargetFailure(
 
 	env := setupArchiveTest(t)
 
-	// Seeded first so the sweep reaches them before the healthy
+	// Seeded first so the sweep reaches it before the healthy
 	// target: targets come back in insertion order.
-	badConfig := env.seedDatabaseTarget(t, `{"expiry":"!!!"}`)
+	corrupt := env.seedDatabaseTarget(t, time.Hour, "")
-	env.seedArchiveRows(
-		t, badConfig, time.Now().Add(-48*time.Hour),
-	)
-
-	corrupt := env.seedDatabaseTarget(t, `{"expiry":"1h"}`)
 	require.NoError(t, os.WriteFile(
 		env.archivePath(corrupt),
 		[]byte("this is not a sqlite database"),
 		0o600,
 	))
 
-	healthy := env.seedDatabaseTarget(t, `{"expiry":"1h"}`)
+	healthy := env.seedDatabaseTarget(t, time.Hour, "")
 	healthyPath := env.seedArchiveRows(
 		t, healthy,
 		time.Now().Add(-48*time.Hour),
@@ -631,7 +630,7 @@ func TestArchiveSweep_PrunesIdleArchive(t *testing.T) {
 
 	env := setupArchiveTest(t)
 
-	tgt := env.seedDatabaseTarget(t, `{"expiry":"1h"}`)
+	tgt := env.seedDatabaseTarget(t, time.Hour, "")
 
 	now := time.Now()
 	path := env.seedArchiveRows(
@@ -670,7 +669,7 @@ func TestArchiveSweep_LeavesArchiveClosed(t *testing.T) {
 
 	env := setupArchiveTest(t)
 
-	tgt := env.seedDatabaseTarget(t, `{"expiry":"1h"}`)
+	tgt := env.seedDatabaseTarget(t, time.Hour, "")
 	path := env.seedArchiveRows(
 		t, tgt, time.Now().Add(-48*time.Hour),
 	)
@@ -710,7 +709,7 @@ func TestArchiveSweep_ClosesHandleOfRegisteredWriter(
 
 	env := setupArchiveTest(t)
 
-	tgt := env.seedDatabaseTarget(t, `{"expiry":"1h"}`)
+	tgt := env.seedDatabaseTarget(t, time.Hour, "")
 	env.seedArchiveRows(
 		t, tgt, time.Now().Add(-48*time.Hour),
 	)
@@ -795,36 +794,29 @@ func TestArchiveSweep_CancelledSweepLogsNoError(t *testing.T) {
 }
 
 // TestArchiveSweep_NeverExpiryUntouched proves the sweep is a
-// no-op for the default retention policy, so archives with no
+// no-op for the default retention policy, so an archive with an
-// expiry (or the literal "never") behave exactly as before.
+// expiry of 0, which keeps it forever, is left alone.
 func TestArchiveSweep_NeverExpiryUntouched(t *testing.T) {
 	t.Parallel()
 
-	for _, configJSON := range []string{
+	env := setupArchiveTest(t)
-		`{"expiry":"never"}`,
-		`{"expiry":""}`,
-		"",
-	} {
-		env := setupArchiveTest(t)
 
-		tgt := env.seedDatabaseTarget(t, configJSON)
+	tgt := env.seedDatabaseTarget(t, 0, "")
-		path := env.seedArchiveRows(
+	path := env.seedArchiveRows(
-			t, tgt,
+		t, tgt,
-			time.Now().Add(-10000*time.Hour),
+		time.Now().Add(-10000*time.Hour),
-		)
+	)
 
-		env.sweeper.ExportSweep(context.Background())
+	env.sweeper.ExportSweep(context.Background())
 
-		assert.Equal(
+	assert.Equal(
-			t, []string{sweepRowOld}, archivedEventIDs(t, path),
+		t, []string{sweepRowOld}, archivedEventIDs(t, path),
-			"config %q must keep rows forever", configJSON,
+		"an expiry of 0 must keep rows forever",
-		)
+	)
-		assert.False(
+	assert.False(
-			t, env.writers.ExportHasArchiveWriter(tgt.ID),
+		t, env.writers.ExportHasArchiveWriter(tgt.ID),
-			"config %q must leave no registry entry behind",
+		"an expiry of 0 must leave no registry entry behind",
-			configJSON,
+	)
-		)
-	}
 }
 
 // TestArchiveSweep_NeverExpirySkipsBeforeOpening pins the
@@ -845,7 +837,7 @@ func TestArchiveSweep_NeverExpirySkipsBeforeOpening(
 
 	env := setupArchiveTest(t)
 
-	tgt := env.seedDatabaseTarget(t, `{"expiry":"never"}`)
+	tgt := env.seedDatabaseTarget(t, 0, "")
 	path := env.archivePath(tgt)
 
 	seedUnmigratedArchive(t, path)
@@ -897,7 +889,7 @@ func TestArchiveSweep_DoesNotCreateArchiveFile(t *testing.T) {
 
 	env := setupArchiveTest(t)
 
-	tgt := env.seedDatabaseTarget(t, `{"expiry":"1h"}`)
+	tgt := env.seedDatabaseTarget(t, time.Hour, "")
 	path := env.archivePath(tgt)
 
 	require.NoFileExists(t, path)
@@ -928,7 +920,7 @@ func TestArchiveSweep_DoesNotCreateAfterWriterExists(
 
 	env := setupArchiveTest(t)
 
-	tgt := env.seedDatabaseTarget(t, `{"expiry":"1h"}`)
+	tgt := env.seedDatabaseTarget(t, time.Hour, "")
 
 	path, err := env.writers.ExportEnsureArchiveWriter(tgt.ID)
 	require.NoError(t, err)
@@ -947,7 +939,7 @@ func TestArchiveSweep_SkipsDeletedWebhookTargets(t *testing.T) {
 
 	env := setupArchiveTest(t)
 
-	tgt := env.seedDatabaseTarget(t, `{"expiry":"1h"}`)
+	tgt := env.seedDatabaseTarget(t, time.Hour, "")
 	path := env.seedArchiveRows(
 		t, tgt, time.Now().Add(-48*time.Hour),
 	)
@@ -975,7 +967,7 @@ func TestArchiveSweep_ConcurrentWrites(t *testing.T) {
 
 	env := setupArchiveTest(t)
 
-	tgt := env.seedDatabaseTarget(t, `{"expiry":"1h"}`)
+	tgt := env.seedDatabaseTarget(t, time.Hour, "")
 
 	deliveries := make(
 		[]*database.Delivery, 0, sweepConcurrentWrites,
@@ -1020,7 +1012,7 @@ func TestArchiveSweeper_StopsCleanly(t *testing.T) {
 
 	env := setupArchiveTest(t)
 
-	tgt := env.seedDatabaseTarget(t, `{"expiry":"1h"}`)
+	tgt := env.seedDatabaseTarget(t, time.Hour, "")
 	env.seedArchiveRows(
 		t, tgt, time.Now().Add(-48*time.Hour),
 	)

internal/archive/writer.go

@@ -1,7 +1,6 @@
 package archive
 
 import (
-	"encoding/json"
 	"errors"
 	"fmt"
 	"io/fs"
@@ -18,8 +17,9 @@ import (
 	"sneak.berlin/go/webhooker/internal/gormlog"
 )
 
-// ExpiryNever is the expiry sentinel (and default) that
+// ExpiryNever is the archive expiry, as the target forms take it,
-// disables pruning so archived rows are kept forever.
+// that disables pruning so archived rows are kept forever. It is
+// stored as an ArchiveExpiry of 0.
 const ExpiryNever = "never"
 
 // archiveReopenDebounce bounds how often an archive file is
@@ -79,19 +79,6 @@ var (
 	)
 )
 
-// DatabaseTargetConfig is the optional per-target JSON config
-// for a database (archive) target.
-type DatabaseTargetConfig struct {
-	// Expiry is a Go duration (e.g. "720h") after which
-	// archived rows are pruned, or "never" (the default) to
-	// keep them forever.
-	Expiry string `json:"expiry"`
-
-	// Rotation is none (the default), monthly, daily or hourly: see
-	// archivePeriod.
-	Rotation string `json:"rotation"`
-}
-
 // archivedEvent is one fully captured webhook event stored in a
 // database target's archive for long-term retention. It is a
 // self-contained copy — independent of the per-webhook event
@@ -112,63 +99,20 @@ type archivedEvent struct {
 	ArchivedAt time.Time `gorm:"index"`
 }
 
-// ParseExpiry reads the optional expiry from a database
+// ParseExpiry reads a user-supplied archive expiry for a database
-// target's config JSON. An empty config, an empty expiry, or
+// target, as the target forms submit it, into the ArchiveExpiry the
-// the literal "never" all mean keep forever, returned as a zero
+// target stores. Empty and "never" both mean keep forever, which is
-// duration. Any other value must parse as a positive Go
+// 0; anything else must be a positive Go duration such as "720h". Any
-// duration; a set-but-invalid value (unparseable, zero, or
+// other value is an error, so a bad expiry is refused at the form
-// negative) is an error rather than a silent default, matching
+// rather than stored.
-// ValidateExpiry at target creation.
+func ParseExpiry(expiry string) (time.Duration, error) {
-func ParseExpiry(
-	configJSON string,
-) (time.Duration, error) {
-	if configJSON == "" {
-		return 0, nil
-	}
-
-	var cfg DatabaseTargetConfig
-
-	err := json.Unmarshal([]byte(configJSON), &cfg)
-	if err != nil {
-		return 0, fmt.Errorf(
-			"parsing database target config: %w", err,
-		)
-	}
-
-	if cfg.Expiry == "" || cfg.Expiry == ExpiryNever {
-		return 0, nil
-	}
-
-	dur, err := time.ParseDuration(cfg.Expiry)
-	if err != nil {
-		return 0, fmt.Errorf(
-			"parsing archive expiry %q: %w", cfg.Expiry, err,
-		)
-	}
-
-	if dur <= 0 {
-		return 0, fmt.Errorf(
-			"%w: %q", errArchiveExpiryNotPositive, cfg.Expiry,
-		)
-	}
-
-	return dur, nil
-}
-
-// ValidateExpiry checks a user-supplied archive expiry
-// for a database target at configuration time. Valid values are
-// empty, "never" (both meaning keep forever), or a positive Go
-// duration such as "720h". Anything else is an error, so a bad
-// expiry is rejected when the target is created rather than
-// failing every subsequent delivery.
-func ValidateExpiry(expiry string) error {
 	if expiry == "" || expiry == ExpiryNever {
-		return nil
+		return 0, nil
 	}
 
 	dur, err := time.ParseDuration(expiry)
 	if err != nil {
-		return fmt.Errorf(
+		return 0, fmt.Errorf(
 			"expiry must be %q or a Go duration "+
 				"such as \"720h\": %w",
 			ExpiryNever, err,
@@ -176,12 +120,12 @@ func ValidateExpiry(expiry string) error {
 	}
 
 	if dur <= 0 {
-		return fmt.Errorf(
+		return 0, fmt.Errorf(
 			"%w: %q", errArchiveExpiryNotPositive, expiry,
 		)
 	}
 
-	return nil
+	return dur, nil
 }
 
 // archiveWriter owns one database target's archive SQLite files.

internal/database/event_db_isolation_test.go

@@ -28,7 +28,7 @@ func TestEventDBCreateOmitsAssociations(t *testing.T) {
 		WebhookID:   webhookID,
 		Name:        "leaky-target",
 		Type:        database.TargetTypeSlack,
-		Config:      `{"webhookUrl":"https://hooks.example/secret"}`,
+		URL:         "https://hooks.example/secret",
 		MaxAttempts: 1,
 	}
 	target.ID = uuid.New().String()

internal/database/event_tier_indexes_test.go

@@ -79,8 +79,9 @@ func TestEventTierQueriesUseTheirIndexes(t *testing.T) {
 	byStatus := "idx_deliveries_status (status=? AND deleted_at=?)"
 	byEvent := "idx_deliveries_event_id (event_id=? AND deleted_at=?)"
 
-	// The delivery engine: recovery and the retry sweep, the sweep for
+	// The delivery engine: the recovery routine, which reads the
-	// stranded pending deliveries, and the queue depth count.
+	// retrying deliveries and, on a tick of the sweep, the pending ones
+	// untouched for a while; and the queue depth count.
 	assertPlanUses(t, db, dry.Where(
 		"status = ?", database.DeliveryStatusRetrying,
 	).Find(&deliveries), byStatus)

internal/database/model_secrets_test.go

@@ -29,8 +29,10 @@ func marshalModel(t *testing.T, v any) string {
 // these tags the first handler that marshals a model serialises the
 // secret with it. Each field below is a live credential:
 //
-//   - Target.Config holds an incoming-webhook URL whose path segments
+//   - Target.URL is an incoming-webhook URL whose path segments are
-//     are the bearer token.
+//     the bearer token.
+//   - Target.Headers holds header values, routinely authorization
+//     tokens.
 //   - APIKey.Key is a bearer token outright.
 //   - Setting.Value holds the session encryption key.
 //   - User.Password holds the Argon2 hash, and was already tagged.
@@ -44,11 +46,20 @@ func TestModelsDoNotMarshalTheirSecrets(t *testing.T) {
 		model any
 	}{
 		{
-			name: "target config",
+			name: "target url",
 			model: database.Target{
 				Name:        keptField,
 				Type:        database.TargetTypeSlack,
-				Config:      `{"webhookUrl":"https://h/s/` + marker + `"}`,
+				URL:         "https://h/s/" + marker,
+				MaxAttempts: 1,
+			},
+		},
+		{
+			name: "target headers",
+			model: database.Target{
+				Name:        keptField,
+				Type:        database.TargetTypeHTTP,
+				Headers:     map[string]string{"Authorization": marker},
 				MaxAttempts: 1,
 			},
 		},
@@ -87,10 +98,10 @@ func TestModelsDoNotMarshalTheirSecrets(t *testing.T) {
 	}
 }
 
-// TestWebhookMarshalsNoTargetConfig covers the nested case: a webhook
+// TestWebhookMarshalsNoTargetURL covers the nested case: a webhook
 // marshalled with its targets preloaded must not carry the credential
 // through the association either.
-func TestWebhookMarshalsNoTargetConfig(t *testing.T) {
+func TestWebhookMarshalsNoTargetURL(t *testing.T) {
 	t.Parallel()
 
 	const marker = "QQNESTEDMARKERQQ"
@@ -99,7 +110,7 @@ func TestWebhookMarshalsNoTargetConfig(t *testing.T) {
 		Name: keptField,
 		Targets: []database.Target{{
 			Name:        "slack",
-			Config:      `{"webhookUrl":"https://h/s/` + marker + `"}`,
+			URL:         "https://h/s/" + marker,
 			MaxAttempts: 1,
 		}},
 	})

internal/database/model_target.go

@@ -1,5 +1,7 @@
 package database
 
+import "time"
+
 // TargetType represents the type of delivery target
 type TargetType string
 
@@ -11,7 +13,9 @@ const (
 	TargetTypeSlack    TargetType = "slack"
 )
 
-// Target represents a delivery target for a webhook
+// Target represents a delivery target for a webhook. Its settings
+// are the fields from URL to ArchiveRotation; each type uses some of
+// them, and the ones a type does not use stay empty.
 type Target struct {
 	BaseModel
 
@@ -20,14 +24,35 @@ type Target struct {
 	Type      TargetType `gorm:"not null"           json:"type"`
 	Active    bool       `gorm:"default:true"       json:"active"`
 
-	// Configuration fields (JSON stored based on type).
+	// URL is where an http or slack target sends each event.
 	//
-	// json:"-" because the blob holds the target's credential — a
+	// json:"-" because the URL is the target's credential: a Slack
-	// Slack incoming-webhook URL, or an http destination whose path
+	// incoming-webhook URL, or an http destination whose path segments
-	// segments are the secret. delivery.TargetView is the masking
+	// are the secret. delivery.TargetView is the masking barrier for
-	// barrier for the HTML path; this tag is the barrier for any
+	// the HTML path; this tag is the barrier for any handler that
-	// handler that marshals the model itself.
+	// marshals the model itself.
-	Config string `gorm:"type:text" json:"-"` // JSON configuration
+	URL string `json:"-"`
+
+	// Headers is an http target's extra request headers, name to
+	// value, stored as JSON text. json:"-" for the same reason as URL:
+	// a header value is routinely an authorization token.
+	Headers map[string]string `gorm:"serializer:json" json:"-"`
+
+	// TimeoutSeconds is an http target's per-request timeout; 0 uses
+	// the delivery engine's shared client timeout.
+	TimeoutSeconds int `json:"timeoutSeconds,omitempty"`
+
+	// ForwardQuery passes each event's query string on to an http
+	// target, appended to URL. Off, URL is sent exactly as stored.
+	ForwardQuery bool `json:"forwardQuery,omitempty"`
+
+	// ArchiveExpiry is how long a database target keeps each archived
+	// event; 0 keeps them forever.
+	ArchiveExpiry time.Duration `json:"archiveExpiry,omitempty"`
+
+	// ArchiveRotation is how often a database target starts a new
+	// archive file: none, monthly, daily or hourly.
+	ArchiveRotation string `json:"archiveRotation,omitempty"`
 
 	// MaxAttempts is how many times an HTTP or Slack target attempts
 	// each delivery in all, at least 1. 1 is a single attempt with no

internal/database/model_target_test.go

@@ -16,7 +16,7 @@ func newHTTPTarget(maxAttempts int) *database.Target {
 		WebhookID:   uuid.New().String(),
 		Name:        "target",
 		Type:        database.TargetTypeHTTP,
-		Config:      `{"url":"https://example.com/"}`,
+		URL:         "https://example.com/",
 		MaxAttempts: maxAttempts,
 	}
 }
@@ -42,3 +42,22 @@ func TestTargetCreate_AcceptsOneAttempt(t *testing.T) {
 
 	require.NoError(t, db.Create(newHTTPTarget(1)).Error)
 }
+
+// TestTargetHeaders_StoredAsJSON reads the headers column back as
+// text, to show it holds the header map as JSON.
+func TestTargetHeaders_StoredAsJSON(t *testing.T) {
+	t.Parallel()
+
+	db := startedTestDB(t)
+
+	target := newHTTPTarget(1)
+	target.Headers = map[string]string{"Authorization": "Bearer x"}
+	require.NoError(t, db.Create(target).Error)
+
+	var headers string
+
+	require.NoError(t, db.Raw(
+		"SELECT headers FROM targets WHERE id = ?", target.ID,
+	).Scan(&headers).Error)
+	assert.JSONEq(t, `{"Authorization":"Bearer x"}`, headers)
+}

internal/database/retention.go

@@ -184,8 +184,9 @@ func (r *RetentionReaper) sweep(ctx context.Context) {
 
 		wh := webhooks[i]
 
-		// A missing database has nothing to reap. Restart recovery
+		// A missing database has nothing to reap. The delivery
-		// reports a lost one (see WebhookDBManager.GetDB).
+		// engine's recovery routine reports a lost one at start (see
+		// WebhookDBManager.GetDB).
 		if !r.dbManager.DBExists(wh.ID) {
 			continue
 		}

internal/database/schema_test.go

@@ -87,13 +87,18 @@ func TestMainSchemaHoldsEveryModel(t *testing.T) {
 		Active:      true,
 	})
 	assertRoundTrip(t, db, &database.Target{
-		BaseModel:   newBaseModel(),
+		BaseModel:       newBaseModel(),
-		WebhookID:   uuid.New().String(),
+		WebhookID:       uuid.New().String(),
-		Name:        "target",
+		Name:            "target",
-		Type:        database.TargetTypeHTTP,
+		Type:            database.TargetTypeHTTP,
-		Active:      true,
+		Active:          true,
-		Config:      `{"url":"https://example.com/"}`,
+		URL:             "https://example.com/",
-		MaxAttempts: 3,
+		Headers:         map[string]string{"X-Api-Key": "key"},
+		TimeoutSeconds:  30,
+		ForwardQuery:    true,
+		ArchiveExpiry:   720 * time.Hour,
+		ArchiveRotation: "daily",
+		MaxAttempts:     3,
 	})
 }
 

internal/db/migrations/main/001_schema.sql

@@ -79,7 +79,12 @@ CREATE TABLE targets (
     name text NOT NULL,
     type text NOT NULL,
     active numeric DEFAULT true,
-    config text,
+    url text,
+    headers text,
+    timeout_seconds integer,
+    forward_query numeric,
+    archive_expiry integer,
+    archive_rotation text,
     max_attempts integer NOT NULL,
     PRIMARY KEY (id),
     CONSTRAINT fk_webhooks_targets

internal/delivery/client_ssrf_test.go

@@ -46,12 +46,7 @@ func TestClientForRequest_TimeoutKeepsSSRFGuard(t *testing.T) {
 		t.Run(target, func(t *testing.T) {
 			t.Parallel()
 
-			cfg := &delivery.HTTPTargetConfig{
+			client := engine.ExportClientForRequest(5, nil)
-				URL:     target,
-				Timeout: 5,
-			}
-
-			client := engine.ExportClientForRequest(cfg, nil)
 
 			require.NotSame(t, engine.ExportClient(), client,
 				"a per-target timeout must yield a "+
@@ -101,11 +96,7 @@ func TestClientForRequest_NoTimeoutUnchanged(t *testing.T) {
 
 	engine := newSSRFTestEngine()
 
-	cfg := &delivery.HTTPTargetConfig{
+	client := engine.ExportClientForRequest(0, nil)
-		URL: "https://example.com/hook",
-	}
-
-	client := engine.ExportClientForRequest(cfg, nil)
 
 	assert.Same(t, engine.ExportClient(), client,
 		"without a per-target timeout the shared client "+
@@ -123,15 +114,8 @@ func TestClientForRequest_HeadersKeepSSRFGuard(t *testing.T) {
 
 	engine := newSSRFTestEngine()
 
-	cfg := &delivery.HTTPTargetConfig{
-		URL: "https://example.com/with-headers",
-		Headers: map[string]string{
-			"X-Api-Key": "configured",
-		},
-	}
-
 	client := engine.ExportClientForRequest(
-		cfg, []string{"X-Api-Key"},
+		0, []string{probeHeaderName},
 	)
 
 	require.NotNil(t, client.CheckRedirect,

internal/delivery/engine.go

@@ -1,5 +1,5 @@
-// Package delivery manages asynchronous event delivery
+// Package delivery stores each event with its deliveries and delivers
-// to configured targets.
+// them, asynchronously, to configured targets.
 package delivery
 
 import (
@@ -23,10 +23,11 @@ import (
 
 const (
 	// deliveryChannelSize is the buffer size for the delivery
-	// channel. New Tasks from the webhook handler are sent
+	// channel. The Tasks of newly stored deliveries, and of the
-	// here. Workers drain this channel. Sized large enough
+	// pending deliveries the recovery routine hands back, are
-	// that the webhook handler should never block under
+	// sent here. Workers drain this channel. Sized large enough
-	// normal load.
+	// that no task should be dropped under normal load: one that
+	// does not fit is left for the sweep.
 	deliveryChannelSize = 10000
 
 	// retryChannelSize is the buffer size for the retry
@@ -40,9 +41,10 @@ const (
 	// explosions regardless of queue depth.
 	defaultWorkers = 10
 
-	// retrySweepInterval is how often the periodic retry
+	// sweepInterval is how often the recovery routine runs
-	// sweep runs.
+	// once it has run at start. Each of those runs is a tick of
-	retrySweepInterval = 60 * time.Second
+	// the sweep.
+	sweepInterval = 60 * time.Second
 
 	// pendingSweepMinAge is how long a delivery must have sat
 	// untouched at pending before the sweep will look at it.
@@ -63,10 +65,10 @@ const (
 	pendingSweepMinAge = 15 * time.Minute
 
 	// pendingSweepBatch bounds how many stranded pending deliveries
-	// one sweep of one webhook re-dispatches. The sweep runs every
+	// one tick of the sweep re-dispatches for one webhook. The sweep
-	// retrySweepInterval, so a larger backlog drains across
+	// ticks every sweepInterval, so a larger backlog drains
-	// successive sweeps instead of arriving as one burst against a
+	// across successive ticks instead of arriving as one burst against
-	// database that was already struggling to accept writes.
+	// a database that was already struggling to accept writes.
 	pendingSweepBatch = 500
 
 	// MaxInlineBodySize is the maximum event body size that
@@ -104,12 +106,19 @@ type Task struct {
 	WebhookID    string
 	EntrypointID string
 
-	TargetID     string
+	// The target's fields, as they were when the task was made.
-	TargetName   string
+	TargetID        string
-	TargetType   database.TargetType
+	TargetName      string
-	TargetConfig string
+	TargetType      database.TargetType
-	MaxAttempts  int
+	TargetURL       string
+	TargetHeaders   map[string]string
+	TimeoutSeconds  int
+	ForwardQuery    bool
+	ArchiveExpiry   time.Duration
+	ArchiveRotation string
+	MaxAttempts     int
 
+	// The event's fields.
 	Method      string
 	RawQuery    string
 	Headers     string
@@ -119,17 +128,11 @@ type Task struct {
 	AttemptNum int
 }
 
-// Notifier is the interface for notifying the delivery
-// engine about new deliveries.
-type Notifier interface {
-	Notify(tasks []Task)
-}
-
 // CircuitBreakers is how the handlers read a target's circuit
 // breaker, so the webhook page and the event log can say that
-// deliveries to the target are paused and until when. It keeps the
+// deliveries to the target are paused and until when. The handlers
-// handlers free of the engine's internals and is trivially faked in
+// hold the engine itself as well; they read breakers through this
-// tests.
+// interface so that a test can make one read as open.
 type CircuitBreakers interface {
 	StateAndCooldown(targetID string) (CircuitState, time.Duration)
 }
@@ -149,12 +152,13 @@ type EngineParams struct {
 }
 
 // Engine processes queued deliveries in the background
-// using a bounded worker pool architecture. It owns only
+// using a bounded worker pool architecture. It also stores each
-// the cross-target machinery: the worker pool, the queue
+// event with its deliveries and creates replay deliveries (see
-// and retry channels, restart recovery, and the persistence
+// store.go). Beyond that it owns only the cross-target machinery:
-// helpers and Scheduler that individual targets rely on.
+// the worker pool, the delivery and retry channels, the recovery
-// Each target type owns its own delivery, including retries,
+// routine, and the persistence helpers and Scheduler that
-// backoff, and circuit breaking.
+// individual targets rely on. Each target type owns its own
+// delivery, including retries, backoff, and circuit breaking.
 type Engine struct {
 	database   *database.Database
 	dbManager  *database.WebhookDBManager
@@ -190,7 +194,7 @@ type Engine struct {
 	archives *archive.Writers
 
 	// inflight is the set of deliveries this engine currently owns.
-	// Recovery and the sweeps re-dispatch only what it does not
+	// The recovery routine re-dispatches only what it does not
 	// hold. Held by value: its zero value works, so no constructor
 	// can leave it out. See inflight.go.
 	inflight inflightSet
@@ -224,38 +228,6 @@ func New(
 	return e
 }
 
-// Notify signals the delivery engine that new deliveries
-// are ready.
-func (e *Engine) Notify(tasks []Task) {
-	for i := range tasks {
-		// Owned before it is queued, and until the worker that runs
-		// it returns. A task can sit in a 10000-deep channel for a
-		// long time on a healthy system, and nothing may re-send it
-		// while it waits. See inflight.go.
-		if !e.inflight.retainIdle(tasks[i].DeliveryID) {
-			e.log.Warn(
-				"delivery already in flight, not queued again",
-				"delivery_id", tasks[i].DeliveryID,
-				"event_id", tasks[i].EventID,
-			)
-
-			continue
-		}
-
-		select {
-		case e.deliveryCh <- tasks[i]:
-		default:
-			e.inflight.release(tasks[i].DeliveryID)
-			e.log.Warn(
-				"delivery channel full, "+
-					"task will be recovered by the sweep",
-				"delivery_id", tasks[i].DeliveryID,
-				"event_id", tasks[i].EventID,
-			)
-		}
-	}
-}
-
 // StateAndCooldown implements CircuitBreakers. It returns the state of
 // the target's circuit breaker and, while the breaker is open, what is
 // left of its cooldown; the cooldown is zero once that has passed and
@@ -316,6 +288,38 @@ func (e *Engine) ScheduleRetry(
 	})
 }
 
+// notify queues the tasks of deliveries already stored. StoreEvent and
+// CreateReplay call it once their transaction has committed.
+func (e *Engine) notify(tasks []Task) {
+	for i := range tasks {
+		// Owned before it is queued, and until the worker that runs
+		// it returns. A task can sit in a 10000-deep channel for a
+		// long time on a healthy system, and nothing may re-send it
+		// while it waits. See inflight.go.
+		if !e.inflight.retainIdle(tasks[i].DeliveryID) {
+			e.log.Warn(
+				"delivery already in flight, not queued again",
+				"delivery_id", tasks[i].DeliveryID,
+				"event_id", tasks[i].EventID,
+			)
+
+			continue
+		}
+
+		select {
+		case e.deliveryCh <- tasks[i]:
+		default:
+			e.inflight.release(tasks[i].DeliveryID)
+			e.log.Warn(
+				"delivery channel full, "+
+					"task will be recovered by the sweep",
+				"delivery_id", tasks[i].DeliveryID,
+				"event_id", tasks[i].EventID,
+			)
+		}
+	}
+}
+
 // userAgent is the User-Agent header of every http and slack
 // delivery request: the program name and the running build's
 // version.
@@ -342,8 +346,8 @@ func (e *Engine) registerHooks(lc fx.Lifecycle) {
 	})
 }
 
-// start launches the worker pool, restart recovery, and the
+// start launches the worker pool and the recovery routine, which
-// periodic retry sweep.
+// runs now and then on every tick of the sweep (see runRecovery).
 //
 // Their context is derived from context.Background(), NOT from
 // the fx OnStart hook context. The hook context carries fx's
@@ -366,11 +370,7 @@ func (e *Engine) start() {
 
 	e.wg.Add(1)
 
-	go e.recoverPending(ctx)
+	go e.runRecovery(ctx)
-
-	e.wg.Add(1)
-
-	go e.retrySweep(ctx)
 
 	e.wg.Add(1)
 
@@ -453,12 +453,6 @@ func (e *Engine) runTask(
 	run(ctx, task)
 }
 
-func (e *Engine) recoverPending(ctx context.Context) {
-	defer e.wg.Done()
-
-	e.recoverInFlight(ctx)
-}
-
 func (e *Engine) processNewTask(
 	ctx context.Context, task *Task,
 ) {
@@ -473,9 +467,10 @@ func (e *Engine) processNewTask(
 		return
 	}
 
-	// Restart recovery can send and release this delivery before the
+	// The recovery routine's run at start can send and release this
-	// receiver's Notify queues it. Ownership cannot refuse a delivery
+	// delivery before StoreEvent or CreateReplay queues it. Ownership
-	// nobody holds, so the row decides whether it still needs sending.
+	// cannot refuse a delivery nobody holds, so the row decides whether
+	// it still needs sending.
 	row, err := e.loadDelivery(webhookDB, task.DeliveryID)
 	if err != nil {
 		e.log.Error(
@@ -605,9 +600,9 @@ func (e *Engine) processRetryTask(
 // else on this path reads the target row. Without this check a
 // deletion stops nothing: the timer keeps firing and keeps sending to
 // the destination the operator removed, for the whole remaining
-// backoff chain. Terminalising in the recovery and sweep paths alone
+// backoff chain. Terminalising in the recovery routine alone is not
-// is not enough, because those only see the delivery once nothing
+// enough, because it only sees the delivery once nothing holds it in
-// holds it in memory — which is to say after a restart.
+// memory — which is to say after a restart.
 //
 // The worker already owns this delivery, so the terminal write happens
 // here directly, exactly as a target's own Deliver fails one. Claiming
@@ -655,7 +650,47 @@ func (e *Engine) abandonRetryForMissingTarget(
 	return true
 }
 
-func (e *Engine) recoverInFlight(ctx context.Context) {
+// runRecovery runs the recovery routine, recoverDeliveries, once when
+// the engine starts and then on every tick of the sweep, every
+// sweepInterval, until the engine stops.
+func (e *Engine) runRecovery(ctx context.Context) {
+	defer e.wg.Done()
+
+	ticker := time.NewTicker(sweepInterval)
+	defer ticker.Stop()
+
+	e.recoverDeliveries(ctx, true)
+
+	for {
+		select {
+		case <-ctx.Done():
+			return
+		case <-ticker.C:
+			e.recoverDeliveries(ctx, false)
+		}
+	}
+}
+
+// recoverDeliveries is the engine's one recovery routine: atStart is
+// true for its run when the engine starts and false on a tick of the
+// sweep.
+//
+// For every webhook it finds the pending and retrying deliveries the
+// engine is not working on, such as those a stop or a crash cut off, a
+// full channel dropped, or a failed bookkeeping write left behind. One
+// that already has a successful attempt is marked delivered. A retrying
+// one is scheduled after what is left of its backoff, or now when
+// nothing is left. A pending one goes to a worker now.
+//
+// Ownership keeps it off a delivery the engine is working on, has
+// queued, or holds a retry timer for, the same at start as on a tick:
+// every delivery it acts on is taken through the inflight set first.
+// See inflight.go.
+//
+// A run at start differs from a tick in which webhooks it opens (see
+// recoverWebhookDeliveries) and which pending deliveries it takes (see
+// recoverPendingDeliveries).
+func (e *Engine) recoverDeliveries(ctx context.Context, atStart bool) {
 	var webhookIDs []string
 
 	err := e.database.DB().
@@ -677,18 +712,27 @@ func (e *Engine) recoverInFlight(ctx context.Context) {
 		default:
 		}
 
-		// Opened even when its file is missing, so that a lost
+		e.recoverWebhookDeliveries(ctx, webhookID, atStart)
-		// database is reported at start, not when the webhook next
-		// receives an event, which for a quiet webhook may be never.
-		e.recoverWebhookDeliveries(ctx, webhookID)
 	}
 }
 
+// recoverWebhookDeliveries runs the recovery routine over one webhook.
+//
+// At start the webhook's database is opened even when its file is
+// missing, so that a lost database is reported at start, not when the
+// webhook next receives an event, which for a quiet webhook may be
+// never. A tick leaves a missing file alone rather than create one: a
+// webhook being created has its row saved a moment before its file,
+// and a tick in between would report that file as lost.
 func (e *Engine) recoverWebhookDeliveries(
-	ctx context.Context, webhookID string,
+	ctx context.Context, webhookID string, atStart bool,
 ) {
-	// The web interface is already serving, so the webhook may have
+	if !atStart && !e.dbManager.DBExists(webhookID) {
-	// been deleted since the list was read. Opening its database then
+		return
+	}
+
+	// The web interface is serving, so the webhook may have been
+	// deleted since the list was read. Opening its database then
 	// would create the file again after the delete removed it.
 	stillExists := func() (bool, error) {
 		var count int64
@@ -720,16 +764,18 @@ func (e *Engine) recoverWebhookDeliveries(
 	}
 
 	e.recoverPendingDeliveries(
-		ctx, webhookDB, webhookID,
+		ctx, webhookDB, webhookID, atStart,
 	)
 
 	e.recoverRetryingDeliveries(
-		webhookDB, webhookID,
+		ctx, webhookDB, webhookID,
 	)
 }
 
+// recoverRetryingDeliveries recovers every retrying delivery of one
+// webhook, at start and on a tick alike.
 func (e *Engine) recoverRetryingDeliveries(
-	webhookDB *gorm.DB, webhookID string,
+	ctx context.Context, webhookDB *gorm.DB, webhookID string,
 ) {
 	var retrying []database.Delivery
 
@@ -756,6 +802,12 @@ func (e *Engine) recoverRetryingDeliveries(
 	)
 
 	for i := range retrying {
+		select {
+		case <-ctx.Done():
+			return
+		default:
+		}
+
 		if _, ok := settled[retrying[i].ID]; ok {
 			continue
 		}
@@ -767,8 +819,9 @@ func (e *Engine) recoverRetryingDeliveries(
 }
 
 // recoverSingleRetry hands an orphaned retrying delivery back
-// to its target to recompute the remaining backoff, then
+// to its target to work out what is left of its backoff, then
-// reschedules it. Targets that do not own durable retries
+// schedules its next attempt after that, or now when nothing is
+// left. Targets that do not own durable retries
 // (fire-and-forget) never produce retrying deliveries, so a
 // delivery found in that state has had its target's type
 // changed underneath it and is terminally failed.
@@ -816,6 +869,19 @@ func (e *Engine) recoverSingleRetry(
 		webhookDB, d.ID, attemptNum,
 	)
 
+	// Taken before the event is read, so that a delivery the engine
+	// already holds, most often one waiting out its backoff on a
+	// timer, costs a tick no read of its body.
+	if !e.takeForRedispatch(
+		webhookDB, d.ID, database.DeliveryStatusRetrying,
+	) {
+		return
+	}
+
+	// ScheduleRetry takes a reference of its own before it returns,
+	// and that one keeps the delivery owned through the backoff.
+	defer e.inflight.release(d.ID)
+
 	event, err := e.loadEvent(webhookDB, d.EventID)
 	if err != nil {
 		e.log.Error(
@@ -829,13 +895,9 @@ func (e *Engine) recoverSingleRetry(
 		return
 	}
 
-	task := buildRecoveryTask(
+	e.ScheduleRetry(buildTask(
 		d, webhookID, &event, &target, attemptNum+1,
-	)
+	), remaining)
-
-	if !e.rescheduleRecovered(webhookDB, task, remaining) {
-		return
-	}
 
 	e.log.Info(
 		"recovering retrying delivery",
@@ -846,28 +908,54 @@ func (e *Engine) recoverSingleRetry(
 	)
 }
 
+// recoverPendingDeliveries recovers the pending deliveries of one
+// webhook: it marks delivered those that already have a successful
+// attempt and sends the rest.
+//
+// A delivery is created pending and leaves that state only when its
+// outcome is written, so a pending row the engine does not own is one
+// it stopped working on before then: for example one whose bookkeeping
+// write failed, whose attempt a stop cut off, that was still queued
+// when the engine last stopped, whose task was dropped because the
+// delivery channel was full (by notify or by queueRecovered), or whose
+// worker could not open the webhook's database.
+//
+// At start every pending delivery is taken, however recent, so one a
+// stop cut off moments ago is sent again now. A tick takes only those
+// untouched for pendingSweepMinAge, at most pendingSweepBatch of them.
+// The age bound is not what keeps a tick off live work: a delivery
+// waiting in deliveryCh is pending and arbitrarily old. Ownership is,
+// checked per delivery in takeForRedispatch. See inflight.go.
 func (e *Engine) recoverPendingDeliveries(
 	ctx context.Context,
 	webhookDB *gorm.DB,
 	webhookID string,
+	atStart bool,
 ) {
+	query := webhookDB.Where(
+		"status = ?", database.DeliveryStatusPending,
+	)
+
+	if !atStart {
+		query = query.
+			Where(
+				"updated_at < ?",
+				time.Now().Add(-pendingSweepMinAge),
+			).
+			Limit(pendingSweepBatch)
+	}
+
 	var deliveries []database.Delivery
 
 	// No Preload: event bodies are read one at a time in
 	// sendRecoveredDeliveries, and only for the deliveries actually
 	// being sent.
-	result := webhookDB.
+	err := query.Find(&deliveries).Error
-		Where(
+	if err != nil {
-			"status = ?",
-			database.DeliveryStatusPending,
-		).
-		Find(&deliveries)
-
-	if result.Error != nil {
 		e.log.Error(
-			"failed to query pending deliveries",
+			"failed to query pending deliveries for recovery",
 			"webhook_id", webhookID,
-			"error", result.Error,
+			"error", err,
 		)
 
 		return
@@ -883,21 +971,6 @@ func (e *Engine) recoverPendingDeliveries(
 		"count", len(deliveries),
 	)
 
-	e.recoverPendingBatch(
-		ctx, webhookDB, webhookID, deliveries,
-	)
-}
-
-// recoverPendingBatch settles every delivery in the batch that was
-// already delivered, and re-dispatches only the rest. Both the
-// restart-time recovery and the periodic sweep go through it, so a
-// pending delivery is treated the same however it was found.
-func (e *Engine) recoverPendingBatch(
-	ctx context.Context,
-	webhookDB *gorm.DB,
-	webhookID string,
-	deliveries []database.Delivery,
-) {
 	targetMap := e.loadTargetMap(deliveries)
 
 	settled := e.reconcileDelivered(
@@ -925,11 +998,11 @@ func (e *Engine) recoverPendingBatch(
 // wire I/O happened and was recorded, and all that is missing is the
 // status.
 //
-// Every recovery path runs this, not only the pending one. A delivery
+// The recovery routine runs this for retrying deliveries as well as
-// abandoned at retrying can hold a successful result just as a pending
+// pending ones. A delivery abandoned at retrying can hold a successful
-// one can — a second attempt that reached the receiver and whose status
+// result just as a pending one can — a second attempt that reached the
-// write then failed sits at retrying with success recorded — and
+// receiver and whose status write then failed sits at retrying with
-// re-sending it is the same duplicate.
+// success recorded — and re-sending it is the same duplicate.
 //
 // Deliveries whose result row itself never landed are not in the
 // returned set and are re-sent, recorded as the further attempt they
@@ -1016,247 +1089,8 @@ func (e *Engine) reconcileDelivered(
 	return settled
 }
 
-func (e *Engine) retrySweep(ctx context.Context) {
-	defer e.wg.Done()
-
-	ticker := time.NewTicker(retrySweepInterval)
-	defer ticker.Stop()
-
-	for {
-		select {
-		case <-ctx.Done():
-			return
-		case <-ticker.C:
-			e.sweepOrphanedRetries(ctx)
-		}
-	}
-}
-
-func (e *Engine) sweepOrphanedRetries(
-	ctx context.Context,
-) {
-	var webhookIDs []string
-
-	err := e.database.DB().
-		Model(&database.Webhook{}).
-		Pluck("id", &webhookIDs).Error
-	if err != nil {
-		e.log.Error(
-			"retry sweep: failed to query webhook IDs",
-			"error", err,
-		)
-
-		return
-	}
-
-	for _, webhookID := range webhookIDs {
-		select {
-		case <-ctx.Done():
-			return
-		default:
-		}
-
-		if !e.dbManager.DBExists(webhookID) {
-			continue
-		}
-
-		e.sweepWebhookRetries(ctx, webhookID)
-	}
-}
-
-func (e *Engine) sweepWebhookRetries(
-	ctx context.Context, webhookID string,
-) {
-	webhookDB, err := e.dbManager.GetDB(webhookID)
-	if err != nil {
-		e.log.Error(
-			"retry sweep: failed to get webhook database",
-			"webhook_id", webhookID,
-			"error", err,
-		)
-
-		return
-	}
-
-	var retrying []database.Delivery
-
-	err = webhookDB.
-		Where(
-			"status = ?",
-			database.DeliveryStatusRetrying,
-		).
-		Find(&retrying).Error
-	if err != nil {
-		e.log.Error(
-			"retry sweep: "+
-				"failed to query retrying deliveries",
-			"webhook_id", webhookID,
-			"error", err,
-		)
-
-		return
-	}
-
-	settled := e.reconcileDelivered(
-		webhookDB, webhookID, retrying,
-		e.loadTargetMap(retrying),
-	)
-
-	for i := range retrying {
-		select {
-		case <-ctx.Done():
-			return
-		default:
-		}
-
-		if _, ok := settled[retrying[i].ID]; ok {
-			continue
-		}
-
-		e.sweepSingleRetry(
-			webhookDB, webhookID, &retrying[i],
-		)
-	}
-
-	e.sweepWebhookPending(ctx, webhookDB, webhookID)
-}
-
-// sweepWebhookPending recovers deliveries stranded at pending.
-//
-// A delivery is created pending and leaves that state only when its
-// outcome is written, so a pending row the engine does not own is one
-// whose bookkeeping write failed — the state that used to sit there
-// until a restart, and then produce a duplicate at the receiver. The
-// sweep gives it the same reconcile-then-dispatch treatment restart
-// recovery gets, so it costs a minute rather than an operator
-// noticing.
-//
-// What keeps the sweep off live work is ownership, checked per
-// delivery in takeForRedispatch, not the age bound in this query.
-// A delivery waiting in deliveryCh is pending and arbitrarily old —
-// the channel holds 10000 tasks and 10 workers drain it — so
-// reasoning from the row's age alone re-sends it. See inflight.go.
-func (e *Engine) sweepWebhookPending(
-	ctx context.Context,
-	webhookDB *gorm.DB,
-	webhookID string,
-) {
-	var pending []database.Delivery
-
-	err := webhookDB.
-		Where(
-			"status = ? AND updated_at < ?",
-			database.DeliveryStatusPending,
-			time.Now().Add(-pendingSweepMinAge),
-		).
-		Limit(pendingSweepBatch).
-		Find(&pending).Error
-	if err != nil {
-		e.log.Error(
-			"retry sweep: "+
-				"failed to query pending deliveries",
-			"webhook_id", webhookID,
-			"error", err,
-		)
-
-		return
-	}
-
-	if len(pending) == 0 {
-		return
-	}
-
-	e.log.Info(
-		"retry sweep: recovering stranded pending deliveries",
-		"webhook_id", webhookID,
-		"count", len(pending),
-	)
-
-	e.recoverPendingBatch(ctx, webhookDB, webhookID, pending)
-}
-
-// sweepSingleRetry re-enqueues an orphaned retrying delivery
-// whose backoff window has elapsed, delegating the backoff
-// decision to the delivery's target. A delivery whose target
-// no longer owns durable retries is terminally failed.
-func (e *Engine) sweepSingleRetry(
-	webhookDB *gorm.DB,
-	webhookID string,
-	d *database.Delivery,
-) {
-	target, err := e.loadTarget(d.TargetID)
-	if err != nil {
-		// Deleted is terminal, unreadable is not; see
-		// recoverSingleRetry.
-		if errors.Is(err, gorm.ErrRecordNotFound) {
-			e.failMissingTarget(webhookDB, webhookID, d)
-
-			return
-		}
-
-		e.log.Error(
-			"retry sweep: failed to load target",
-			"delivery_id", d.ID,
-			"target_id", d.TargetID,
-			"error", err,
-		)
-
-		return
-	}
-
-	rs, ok := e.targets[target.Type].(rescheduler)
-	if !ok {
-		e.failUnretryableRetry(
-			webhookDB, webhookID, d, &target,
-		)
-
-		return
-	}
-
-	attemptNum := e.countAttempts(webhookDB, d.ID)
-
-	if !rs.backoffElapsed(
-		webhookDB, d.ID, attemptNum,
-	) {
-		return
-	}
-
-	event, err := e.loadEvent(webhookDB, d.EventID)
-	if err != nil {
-		e.log.Error(
-			"retry sweep: failed to load event",
-			"delivery_id", d.ID,
-			"event_id", d.EventID,
-			"error", err,
-		)
-
-		return
-	}
-
-	task := buildRecoveryTask(
-		d, webhookID, &event, &target, attemptNum+1,
-	)
-
-	if !e.redispatch(
-		e.retryCh, webhookDB, task,
-		database.DeliveryStatusRetrying,
-	) {
-		return
-	}
-
-	e.log.Info(
-		"retry sweep: "+
-			"recovered orphaned retrying delivery",
-		"delivery_id", d.ID,
-		"webhook_id", webhookID,
-		"attempt", attemptNum+1,
-	)
-}
-
 // failUnretryableRetry terminally fails an orphaned retrying
-// delivery whose target type no longer supports retries. Both
+// delivery whose target type no longer supports retries.
-// restart recovery and the periodic sweep call it, so the
-// terminal transition exists once.
 //
 // This is only reachable when a target's type has been changed
 // out from under an in-flight retrying delivery (or the type is
@@ -1304,8 +1138,8 @@ func (e *Engine) failUnretryableRetry(
 }
 
 // failMissingTarget terminally fails a recovered delivery, pending or
-// retrying, whose target row is gone. Restart recovery and the periodic
+// retrying, whose target row is gone. The recovery routine calls it for
-// sweep call it for both statuses, so the transition exists once.
+// both statuses.
 //
 // Until it existed those paths logged the failed lookup and moved on,
 // which left the delivery where it was for the life of the database and
@@ -1712,10 +1546,15 @@ func buildEventFromTask(task *Task) database.Event {
 
 func buildTargetFromTask(task *Task) database.Target {
 	target := database.Target{
-		Name:        task.TargetName,
+		Name:            task.TargetName,
-		Type:        task.TargetType,
+		Type:            task.TargetType,
-		Config:      task.TargetConfig,
+		URL:             task.TargetURL,
-		MaxAttempts: task.MaxAttempts,
+		Headers:         task.TargetHeaders,
+		TimeoutSeconds:  task.TimeoutSeconds,
+		ForwardQuery:    task.ForwardQuery,
+		ArchiveExpiry:   task.ArchiveExpiry,
+		ArchiveRotation: task.ArchiveRotation,
+		MaxAttempts:     task.MaxAttempts,
 	}
 
 	target.ID = task.TargetID
@@ -1830,11 +1669,11 @@ func (e *Engine) countAttempts(
 // answer cannot go stale between asking and acting.
 //
 // Stamping updated_at is the same statement, and it is a cadence
-// control rather than a claim: the pending sweep selects on that
+// control rather than a claim: a tick of the sweep selects pending
-// column, so a delivery handed out now is not selected again on the
+// deliveries on that column, so one handed out now is not selected
-// next tick a minute later but after pendingSweepMinAge. A delivery
+// again on the next tick a minute later but after pendingSweepMinAge.
-// the database refuses to settle is therefore retried on that
+// A delivery the database refuses to settle is therefore retried on
-// interval instead of every tick.
+// that interval instead of every tick.
 //
 // A failed write is a refusal. It means the database is not accepting
 // writes, which is the condition that stranded the delivery in the
@@ -1882,14 +1721,11 @@ func (e *Engine) takeForRedispatch(
 	return true
 }
 
-// queueRecovered puts an owned delivery's task on a worker channel,
+// queueRecovered puts an owned pending delivery's task on the delivery
-// dropping the ownership the gate took if it does not fit.
+// channel, dropping the ownership the gate took if it does not fit.
-func (e *Engine) queueRecovered(
+func (e *Engine) queueRecovered(task Task) {
-	ch chan<- Task, task Task,
-) bool {
 	select {
-	case ch <- task:
+	case e.deliveryCh <- task:
-		return true
 	default:
 		e.inflight.release(task.DeliveryID)
 		e.log.Warn(
@@ -1898,53 +1734,9 @@ func (e *Engine) queueRecovered(
 			"delivery_id", task.DeliveryID,
 			"webhook_id", task.WebhookID,
 		)
-
-		return false
 	}
 }
 
-// redispatch hands a recovered delivery to a worker channel through
-// takeForRedispatch, and reports whether the task was queued.
-func (e *Engine) redispatch(
-	ch chan<- Task,
-	webhookDB *gorm.DB,
-	task Task,
-	eligible database.DeliveryStatus,
-) bool {
-	if !e.takeForRedispatch(
-		webhookDB, task.DeliveryID, eligible,
-	) {
-		return false
-	}
-
-	return e.queueRecovered(ch, task)
-}
-
-// rescheduleRecovered hands an orphaned retrying delivery back to the
-// retry timer, through the same gate. It reports whether the delivery
-// was rescheduled.
-//
-// The reference taken by the gate is dropped as soon as ScheduleRetry
-// has taken its own, which it does before returning: what keeps the
-// delivery owned through the backoff window is ScheduleRetry's
-// reference, not this one.
-func (e *Engine) rescheduleRecovered(
-	webhookDB *gorm.DB, task Task, delay time.Duration,
-) bool {
-	if !e.takeForRedispatch(
-		webhookDB, task.DeliveryID,
-		database.DeliveryStatusRetrying,
-	) {
-		return false
-	}
-
-	defer e.inflight.release(task.DeliveryID)
-
-	e.ScheduleRetry(task, delay)
-
-	return true
-}
-
 // countAttemptsBatch counts the recorded attempts of every delivery
 // in a batch with one grouped query, keyed by delivery id. Deliveries
 // with no attempts are simply absent from the result, which reads back
@@ -2026,7 +1818,11 @@ func (e *Engine) loadTarget(
 	return target, nil
 }
 
-func buildRecoveryTask(
+// buildTask builds the task that carries delivery d of event to target
+// through the engine's channels, as attempt attemptNum. The body is
+// carried only when it is under MaxInlineBodySize; a larger one is read
+// from the event row when the attempt runs (see hydrateEvent).
+func buildTask(
 	d *database.Delivery,
 	webhookID string,
 	event *database.Event,
@@ -2041,21 +1837,26 @@ func buildRecoveryTask(
 	}
 
 	return Task{
-		DeliveryID:   d.ID,
+		DeliveryID:      d.ID,
-		EventID:      d.EventID,
+		EventID:         d.EventID,
-		WebhookID:    webhookID,
+		WebhookID:       webhookID,
-		EntrypointID: event.EntrypointID,
+		EntrypointID:    event.EntrypointID,
-		TargetID:     target.ID,
+		TargetID:        target.ID,
-		TargetName:   target.Name,
+		TargetName:      target.Name,
-		TargetType:   target.Type,
+		TargetType:      target.Type,
-		TargetConfig: target.Config,
+		TargetURL:       target.URL,
-		MaxAttempts:  target.MaxAttempts,
+		TargetHeaders:   target.Headers,
-		Method:       event.Method,
+		TimeoutSeconds:  target.TimeoutSeconds,
-		RawQuery:     event.RawQuery,
+		ForwardQuery:    target.ForwardQuery,
-		Headers:      event.Headers,
+		ArchiveExpiry:   target.ArchiveExpiry,
-		ContentType:  event.ContentType,
+		ArchiveRotation: target.ArchiveRotation,
-		Body:         bodyPtr,
+		MaxAttempts:     target.MaxAttempts,
-		AttemptNum:   attemptNum,
+		Method:          event.Method,
+		RawQuery:        event.RawQuery,
+		Headers:         event.Headers,
+		ContentType:     event.ContentType,
+		Body:            bodyPtr,
+		AttemptNum:      attemptNum,
 	}
 }
 
@@ -2197,11 +1998,11 @@ func (e *Engine) sendRecoveredDeliveries(
 			continue
 		}
 
-		task := buildRecoveryTask(
+		task := buildTask(
 			&deliveries[i], webhookID, &event, &target,
 			attempts[deliveries[i].ID]+1,
 		)
 
-		e.queueRecovered(e.deliveryCh, task)
+		e.queueRecovered(task)
 	}
 }

internal/delivery/engine_integration_test.go

@@ -3,7 +3,6 @@ package delivery_test
 import (
 	"bytes"
 	"context"
-	"encoding/json"
 	"fmt"
 	"io"
 	"log/slog"
@@ -97,17 +96,6 @@ func iSeedWebhookDB(
 	return db
 }
 
-func iHTTPConfig(url string) string {
-	cfg := delivery.HTTPTargetConfig{URL: url}
-
-	data, err := json.Marshal(cfg)
-	if err != nil {
-		panic("failed to marshal HTTPTargetConfig")
-	}
-
-	return string(data)
-}
-
 func iEngine(
 	t *testing.T, workers int,
 ) *delivery.Engine {
@@ -169,24 +157,24 @@ func iSeedDelivery(
 func iTask(
 	d database.Delivery,
 	event database.Event,
-	webhookID, targetID, name, config string,
+	webhookID, targetID, name, targetURL string,
 	maxAttempts, attemptNum int,
 	body *string,
 ) delivery.Task {
 	return delivery.Task{
-		DeliveryID:   d.ID,
+		DeliveryID:  d.ID,
-		EventID:      event.ID,
+		EventID:     event.ID,
-		WebhookID:    webhookID,
+		WebhookID:   webhookID,
-		TargetID:     targetID,
+		TargetID:    targetID,
-		TargetName:   name,
+		TargetName:  name,
-		TargetType:   database.TargetTypeHTTP,
+		TargetType:  database.TargetTypeHTTP,
-		TargetConfig: config,
+		TargetURL:   targetURL,
-		MaxAttempts:  maxAttempts,
+		MaxAttempts: maxAttempts,
-		Method:       event.Method,
+		Method:      event.Method,
-		Headers:      event.Headers,
+		Headers:     event.Headers,
-		ContentType:  event.ContentType,
+		ContentType: event.ContentType,
-		Body:         body,
+		Body:        body,
-		AttemptNum:   attemptNum,
+		AttemptNum:  attemptNum,
 	}
 }
 
@@ -239,10 +227,9 @@ func TestProcessNewTask_InlineBody(t *testing.T) {
 	)
 
 	bodyStr := event.Body
-	cfg := iHTTPConfig(ts.URL)
 	task := iTask(
 		d, event, s.WebhookID, targetID,
-		"test-target", cfg, 1, 1, &bodyStr,
+		"test-target", ts.URL, 1, 1, &bodyStr,
 	)
 
 	s.Engine.ExportProcessNewTask(
@@ -290,10 +277,9 @@ func TestProcessNewTask_LargeBody_FetchFromDB(
 		database.DeliveryStatusPending,
 	)
 
-	cfg := iHTTPConfig(ts.URL)
 	task := iTask(
 		d, event, s.WebhookID, targetID,
-		"test-large", cfg, 1, 1, nil,
+		"test-large", ts.URL, 1, 1, nil,
 	)
 
 	s.Engine.ExportProcessNewTask(
@@ -313,16 +299,16 @@ func TestProcessNewTask_InvalidWebhookID(t *testing.T) {
 	s := newISetup(t)
 
 	task := delivery.Task{
-		DeliveryID:   uuid.New().String(),
+		DeliveryID:  uuid.New().String(),
-		EventID:      uuid.New().String(),
+		EventID:     uuid.New().String(),
-		WebhookID:    uuid.New().String(),
+		WebhookID:   uuid.New().String(),
-		TargetID:     uuid.New().String(),
+		TargetID:    uuid.New().String(),
-		TargetName:   "test",
+		TargetName:  "test",
-		TargetType:   database.TargetTypeHTTP,
+		TargetType:  database.TargetTypeHTTP,
-		TargetConfig: iHTTPConfig("http://localhost:9999"),
+		TargetURL:   "http://localhost:9999",
-		MaxAttempts:  1,
+		MaxAttempts: 1,
-		Body:         nil,
+		Body:        nil,
-		AttemptNum:   1,
+		AttemptNum:  1,
 	}
 
 	s.Engine.ExportProcessNewTask(
@@ -363,7 +349,6 @@ func TestProcessRetryTask_SuccessfulRetry(t *testing.T) {
 	)
 
 	bodyStr := event.Body
-	cfg := iHTTPConfig(ts.URL)
 
 	// The target row exists because the engine confirms a scheduled
 	// retry's target has not been deleted before it runs it. A retry
@@ -372,12 +357,12 @@ func TestProcessRetryTask_SuccessfulRetry(t *testing.T) {
 	// task. See https://git.eeqj.de/sneak/webhooker/issues/107.
 	iCreateTarget(
 		t, s.MainDB, targetID, s.WebhookID, "retry-target",
-		database.TargetTypeHTTP, cfg, 5,
+		database.TargetTypeHTTP, ts.URL, 5,
 	)
 
 	task := iTask(
 		d, event, s.WebhookID, targetID,
-		"retry-target", cfg, 5, 2, &bodyStr,
+		"retry-target", ts.URL, 5, 2, &bodyStr,
 	)
 
 	s.Engine.ExportProcessRetryTask(
@@ -410,10 +395,9 @@ func TestProcessRetryTask_SkipsNonRetryingDelivery(
 	)
 
 	bodyStr := event.Body
-	cfg := iHTTPConfig("http://localhost:1")
 	task := iTask(
 		d, event, s.WebhookID, targetID,
-		"skip-target", cfg, 5, 2, &bodyStr,
+		"skip-target", "http://localhost:1", 5, 2, &bodyStr,
 	)
 
 	s.Engine.ExportProcessRetryTask(
@@ -460,16 +444,14 @@ func TestProcessRetryTask_LargeBody_FetchFromDB(
 		database.DeliveryStatusRetrying,
 	)
 
-	cfg := iHTTPConfig(ts.URL)
-
 	iCreateTarget(
 		t, s.MainDB, targetID, s.WebhookID, "retry-large",
-		database.TargetTypeHTTP, cfg, 5,
+		database.TargetTypeHTTP, ts.URL, 5,
 	)
 
 	task := iTask(
 		d, event, s.WebhookID, targetID,
-		"retry-large", cfg, 5, 2, nil,
+		"retry-large", ts.URL, 5, 2, nil,
 	)
 
 	s.Engine.ExportProcessRetryTask(
@@ -510,7 +492,7 @@ func TestWorkerLifecycle_StartStop(t *testing.T) {
 	)
 	task.TargetType = database.TargetTypeLog
 
-	s.Engine.Notify([]delivery.Task{task})
+	s.Engine.ExportNotify([]delivery.Task{task})
 
 	iWaitForDelivered(t, s.WebhookDB, d.ID)
 
@@ -570,16 +552,15 @@ func TestWorkerLifecycle_ProcessesRetryChannel(
 	s.Engine.ExportStart()
 
 	bodyStr := event.Body
-	cfg := iHTTPConfig(ts.URL)
 
 	iCreateTarget(
 		t, s.MainDB, targetID, s.WebhookID, "retry-chan-test",
-		database.TargetTypeHTTP, cfg, 5,
+		database.TargetTypeHTTP, ts.URL, 5,
 	)
 
 	task := iTask(
 		d, event, s.WebhookID, targetID,
-		"retry-chan-test", cfg, 5, 2, &bodyStr,
+		"retry-chan-test", ts.URL, 5, 2, &bodyStr,
 	)
 
 	s.Engine.ExportRetryCh() <- task
@@ -659,7 +640,7 @@ func TestRecoverPendingDeliveries(t *testing.T) {
 
 	s.Engine.ExportRecoverPendingDeliveries(
 		context.Background(), s.WebhookDB,
-		s.WebhookID,
+		s.WebhookID, atStart,
 	)
 
 	for i := range 3 {
@@ -685,7 +666,7 @@ func iCreateTarget(
 	mainDB *gorm.DB,
 	targetID, webhookID, name string,
 	targetType database.TargetType,
-	config string,
+	targetURL string,
 	maxAttempts int,
 ) {
 	t.Helper()
@@ -695,7 +676,7 @@ func iCreateTarget(
 		Name:        name,
 		Type:        targetType,
 		Active:      true,
-		Config:      config,
+		URL:         targetURL,
 		MaxAttempts: maxAttempts,
 	}
 	target.ID = targetID
@@ -736,7 +717,7 @@ func TestRecoverWebhookDeliveries_RetryingDeliveries(
 	iCreateTarget(t, s.MainDB, targetID,
 		s.WebhookID, "retry-recovery",
 		database.TargetTypeHTTP,
-		iHTTPConfig("http://example.com/hook"), 5,
+		"http://example.com/hook", 5,
 	)
 
 	event := iSeedEvent(
@@ -756,7 +737,7 @@ func TestRecoverWebhookDeliveries_RetryingDeliveries(
 	)
 
 	s.Engine.ExportRecoverWebhookDeliveries(
-		context.Background(), s.WebhookID,
+		context.Background(), s.WebhookID, atStart,
 	)
 
 	select {
@@ -796,7 +777,7 @@ func iSeedRetryingWithType(
 
 	iCreateTarget(t, s.MainDB, targetID,
 		s.WebhookID, "mutated-target", targetType,
-		iHTTPConfig("http://example.com/hook"), 5,
+		"http://example.com/hook", 5,
 	)
 
 	event := iSeedEvent(
@@ -880,7 +861,7 @@ func TestRecoverSingleRetry_TypeNoLongerRetries(
 	)
 
 	s.Engine.ExportRecoverWebhookDeliveries(
-		context.Background(), s.WebhookID,
+		context.Background(), s.WebhookID, atStart,
 	)
 
 	iAssertTerminallyFailed(
@@ -888,7 +869,7 @@ func TestRecoverSingleRetry_TypeNoLongerRetries(
 	)
 }
 
-func TestSweepSingleRetry_TypeNoLongerRetries(
+func TestRecoverSingleRetry_OnTick_TypeNoLongerRetries(
 	t *testing.T,
 ) {
 	t.Parallel()
@@ -903,8 +884,8 @@ func TestSweepSingleRetry_TypeNoLongerRetries(
 		t, s, database.TargetTypeDatabase,
 	)
 
-	s.Engine.ExportSweepWebhookRetries(
+	s.Engine.ExportRecoverWebhookDeliveries(
-		context.Background(), s.WebhookID,
+		context.Background(), s.WebhookID, onTick,
 	)
 
 	iAssertTerminallyFailed(
@@ -934,14 +915,14 @@ func TestFailUnretryableRetry_WritesNoTargetRow(
 
 	targetID := uuid.New().String()
 
-	// A Slack incoming-webhook URL: the target config IS the
+	// A Slack incoming-webhook URL: the target's URL IS the
 	// credential, which is what makes a leaked target row a
 	// disclosure rather than a curiosity.
 	hookURL := "https://hooks.slack.com/services/T00/B00/x"
 
 	iCreateTarget(t, s.MainDB, targetID,
 		s.WebhookID, "credential-bearing",
-		database.TargetTypeLog, iHTTPConfig(hookURL), 5,
+		database.TargetTypeLog, hookURL, 5,
 	)
 
 	event := iSeedEvent(
@@ -955,8 +936,8 @@ func TestFailUnretryableRetry_WritesNoTargetRow(
 
 	iSeedFailedResult(t, s.WebhookDB, d.ID)
 
-	s.Engine.ExportSweepWebhookRetries(
+	s.Engine.ExportRecoverWebhookDeliveries(
-		context.Background(), s.WebhookID,
+		context.Background(), s.WebhookID, onTick,
 	)
 
 	iAssertStatus(t, s.WebhookDB, d.ID,
@@ -987,13 +968,13 @@ func TestRecoverSingleRetry_UnknownTargetType(
 	deliveryID := iSeedRetryingWithType(t, s, unknown)
 
 	s.Engine.ExportRecoverWebhookDeliveries(
-		context.Background(), s.WebhookID,
+		context.Background(), s.WebhookID, atStart,
 	)
 
 	iAssertTerminallyFailed(t, s, deliveryID, unknown)
 }
 
-func TestSweepSingleRetry_UnknownTargetType(
+func TestRecoverSingleRetry_OnTick_UnknownTargetType(
 	t *testing.T,
 ) {
 	t.Parallel()
@@ -1008,8 +989,8 @@ func TestSweepSingleRetry_UnknownTargetType(
 
 	deliveryID := iSeedRetryingWithType(t, s, unknown)
 
-	s.Engine.ExportSweepWebhookRetries(
+	s.Engine.ExportRecoverWebhookDeliveries(
-		context.Background(), s.WebhookID,
+		context.Background(), s.WebhookID, onTick,
 	)
 
 	iAssertTerminallyFailed(t, s, deliveryID, unknown)
@@ -1051,19 +1032,19 @@ func iCreateWebhook(
 	require.NoError(t, mainDB.Create(&webhook).Error)
 }
 
-// --- recoverInFlight Tests ---
+// --- recoverDeliveries Tests ---
 
-func TestRecoverInFlight_NoWebhooks(t *testing.T) {
+func TestRecoverDeliveries_NoWebhooks(t *testing.T) {
 	t.Parallel()
 
 	s := newISetup(t)
 
-	s.Engine.ExportRecoverInFlight(
+	s.Engine.ExportRecoverDeliveries(
-		context.Background(),
+		context.Background(), atStart,
 	)
 }
 
-func TestRecoverInFlight_WithPendingDeliveries(
+func TestRecoverDeliveries_WithPendingDeliveries(
 	t *testing.T,
 ) {
 	t.Parallel()
@@ -1090,8 +1071,8 @@ func TestRecoverInFlight_WithPendingDeliveries(
 		database.DeliveryStatusPending,
 	)
 
-	s.Engine.ExportRecoverInFlight(
+	s.Engine.ExportRecoverDeliveries(
-		context.Background(),
+		context.Background(), atStart,
 	)
 
 	select {
@@ -1102,16 +1083,16 @@ func TestRecoverInFlight_WithPendingDeliveries(
 			database.TargetTypeLog, task.TargetType,
 		)
 	case <-time.After(2 * time.Second):
-		t.Fatal("expected task from recoverInFlight")
+		t.Fatal("expected task from recovery at start")
 	}
 }
 
-// TestRecoverInFlight_ReportsAMissingWebhookDatabase covers a webhook
+// TestRecoverDeliveries_ReportsAMissingWebhookDatabase covers a webhook
-// whose database file is gone, after a partial restore say. Restart
+// whose database file is gone, after a partial restore say. Recovery at
-// recovery opens every webhook's database, so the empty one made in its
+// start opens every webhook's database, so the empty one made in its
 // place is reported at start, naming the file
 // (https://git.eeqj.de/sneak/webhooker/issues/290).
-func TestRecoverInFlight_ReportsAMissingWebhookDatabase(t *testing.T) {
+func TestRecoverDeliveries_ReportsAMissingWebhookDatabase(t *testing.T) {
 	t.Parallel()
 
 	mainDB := iMainDB(t)
@@ -1131,7 +1112,7 @@ func TestRecoverInFlight_ReportsAMissingWebhookDatabase(t *testing.T) {
 		&http.Client{Timeout: 5 * time.Second}, 1,
 	)
 
-	engine.ExportRecoverInFlight(context.Background())
+	engine.ExportRecoverDeliveries(context.Background(), atStart)
 
 	assert.Contains(
 		t, logs.String(),
@@ -1140,10 +1121,11 @@ func TestRecoverInFlight_ReportsAMissingWebhookDatabase(t *testing.T) {
 	)
 }
 
-// TestRecoverInFlight_SkipsAWebhookDeletedAfterTheListIsRead covers a
+// TestRecoverDeliveries_SkipsAWebhookDeletedAfterTheListIsRead covers a
-// webhook deleted from the web interface while restart recovery runs.
+// webhook deleted from the web interface while the recovery routine
-// Its database file is gone, and recovery must not create it again.
+// runs. Its database file is gone, and recovery must not create it
-func TestRecoverInFlight_SkipsAWebhookDeletedAfterTheListIsRead(
+// again.
+func TestRecoverDeliveries_SkipsAWebhookDeletedAfterTheListIsRead(
 	t *testing.T,
 ) {
 	t.Parallel()
@@ -1179,13 +1161,13 @@ func TestRecoverInFlight_SkipsAWebhookDeletedAfterTheListIsRead(
 		&http.Client{Timeout: 5 * time.Second}, 1,
 	)
 
-	engine.ExportRecoverInFlight(context.Background())
+	engine.ExportRecoverDeliveries(context.Background(), atStart)
 
 	require.True(t, deleted)
 	assert.False(t, dbMgr.DBExists(webhookID))
 }
 
-// --- HTTP Config with custom headers ---
+// --- HTTP target with custom headers ---
 
 func TestDeliverHTTP_CustomTargetHeaders(t *testing.T) {
 	t.Parallel()
@@ -1207,16 +1189,6 @@ func TestDeliverHTTP_CustomTargetHeaders(t *testing.T) {
 	)
 	defer ts.Close()
 
-	cfg := delivery.HTTPTargetConfig{
-		URL: ts.URL,
-		Headers: map[string]string{
-			"Authorization": "Bearer secret-token",
-		},
-	}
-
-	cfgJSON, err := json.Marshal(cfg)
-	require.NoError(t, err)
-
 	event := iSeedEvent(
 		t, s.WebhookDB, s.WebhookID,
 		`{"auth":"test"}`,
@@ -1231,9 +1203,12 @@ func TestDeliverHTTP_CustomTargetHeaders(t *testing.T) {
 	bodyStr := event.Body
 	task := iTask(
 		d, event, s.WebhookID, targetID,
-		"auth-target", string(cfgJSON),
+		"auth-target", ts.URL,
 		1, 1, &bodyStr,
 	)
+	task.TargetHeaders = map[string]string{
+		headerAuthorization: "Bearer secret-token",
+	}
 
 	s.Engine.ExportProcessNewTask(
 		context.TODO(), &task,
@@ -1246,11 +1221,14 @@ func TestDeliverHTTP_CustomTargetHeaders(t *testing.T) {
 
 // --- HTTP delivery with custom timeout ---
 
+// TestDeliverHTTP_TargetTimeout proves a task's TimeoutSeconds reaches
+// the delivery through the engine. The destination answers after two
+// seconds, inside the engine's own five-second client timeout, so only
+// the task's one second can fail the delivery.
 func TestDeliverHTTP_TargetTimeout(t *testing.T) {
 	t.Parallel()
 
-	db := testWebhookDB(t)
+	s := newISetup(t)
-	e := iEngine(t, 1)
 
 	ts := httptest.NewServer(
 		http.HandlerFunc(
@@ -1262,31 +1240,30 @@ func TestDeliverHTTP_TargetTimeout(t *testing.T) {
 	)
 	defer ts.Close()
 
-	cfg := delivery.HTTPTargetConfig{
+	event := iSeedEvent(
-		URL:     ts.URL,
+		t, s.WebhookDB, s.WebhookID, `{"timeout":"test"}`,
-		Timeout: 1,
+	)
-	}
+	targetID := uuid.New().String()
 
-	cfgJSON, err := json.Marshal(cfg)
+	d := iSeedDelivery(
-	require.NoError(t, err)
+		t, s.WebhookDB, event.ID, targetID,
-
+		database.DeliveryStatusPending,
-	event, del := iSeedEventAndDelivery(
-		t, db, `{"timeout":"test"}`,
-		string(cfgJSON),
 	)
 
-	task, d := iHTTPTaskAndDelivery(
+	bodyStr := event.Body
-		event, del, "timeout-target",
+	task := iTask(
-		string(cfgJSON), 1, 1,
+		d, event, s.WebhookID, targetID,
+		"timeout-target", ts.URL, 1, 1, &bodyStr,
 	)
+	task.TimeoutSeconds = 1
 
-	e.ExportDeliverHTTP(context.TODO(), db, d, task)
+	s.Engine.ExportProcessNewTask(context.TODO(), &task)
 
-	iAssertStatus(t, db, del.ID,
+	iAssertStatus(t, s.WebhookDB, d.ID,
 		database.DeliveryStatusFailed,
 	)
 
-	iAssertResultFailed(t, db, del.ID)
+	iAssertResultFailed(t, s.WebhookDB, d.ID)
 }
 
 // TestDeliverHTTP_CutsStoredResponseAtMaxBodyLog pins the size
@@ -1324,8 +1301,6 @@ func TestDeliverHTTP_CutsStoredResponseAtMaxBodyLog(
 	))
 	defer ts.Close()
 
-	cfgJSON := iHTTPConfig(ts.URL)
-
 	event := iSeedEvent(
 		t, s.WebhookDB, s.WebhookID, `{"cut":"test"}`,
 	)
@@ -1339,7 +1314,7 @@ func TestDeliverHTTP_CutsStoredResponseAtMaxBodyLog(
 	bodyStr := event.Body
 	task := iTask(
 		del, event, s.WebhookID, targetID,
-		"cut-target", cfgJSON, 1, 1, &bodyStr,
+		"cut-target", ts.URL, 1, 1, &bodyStr,
 	)
 
 	s.Engine.ExportProcessNewTask(context.TODO(), &task)
@@ -1371,7 +1346,7 @@ func TestDeliverHTTP_CutsStoredResponseAtMaxBodyLog(
 func iSeedEventAndDelivery(
 	t *testing.T,
 	db *gorm.DB,
-	body, _ string,
+	body string,
 ) (database.Event, database.Delivery) {
 	t.Helper()
 
@@ -1402,19 +1377,19 @@ func iSeedEventAndDelivery(
 func iHTTPTaskAndDelivery(
 	event database.Event,
 	del database.Delivery,
-	name, config string,
+	name, targetURL string,
 	maxAttempts, attemptNum int,
 ) (*delivery.Task, *database.Delivery) {
 	task := &delivery.Task{
-		DeliveryID:   del.ID,
+		DeliveryID:  del.ID,
-		EventID:      event.ID,
+		EventID:     event.ID,
-		WebhookID:    event.WebhookID,
+		WebhookID:   event.WebhookID,
-		TargetID:     del.TargetID,
+		TargetID:    del.TargetID,
-		TargetName:   name,
+		TargetName:  name,
-		TargetType:   database.TargetTypeHTTP,
+		TargetType:  database.TargetTypeHTTP,
-		TargetConfig: config,
+		TargetURL:   targetURL,
-		MaxAttempts:  maxAttempts,
+		MaxAttempts: maxAttempts,
-		AttemptNum:   attemptNum,
+		AttemptNum:  attemptNum,
 	}
 
 	d := &database.Delivery{
@@ -1425,7 +1400,7 @@ func iHTTPTaskAndDelivery(
 		Target: database.Target{
 			Name:        name,
 			Type:        database.TargetTypeHTTP,
-			Config:      config,
+			URL:         targetURL,
 			MaxAttempts: maxAttempts,
 		},
 	}
@@ -1454,56 +1429,30 @@ func iAssertResultFailed(
 	assert.NotEmpty(t, result.Error)
 }
 
-// --- HTTP request with invalid config ---
+// --- HTTP request with no URL ---
 
-func TestDeliverHTTP_InvalidConfig(t *testing.T) {
+// TestDeliverHTTP_NoURL proves an http target without a URL, which
+// the forms never store, fails its delivery and records why.
+func TestDeliverHTTP_NoURL(t *testing.T) {
 	t.Parallel()
 
 	db := testWebhookDB(t)
 	e := iEngine(t, 1)
 
-	event, del := iSeedEventAndDelivery(
+	event, del := iSeedEventAndDelivery(t, db, `{"url":"none"}`)
-		t, db, `{"config":"invalid"}`, "",
-	)
 
-	task, d := iHTTPTaskAndDelivery(
+	task, d := iHTTPTaskAndDelivery(event, del, "no-url", "", 1, 1)
-		event, del, "bad-config", `not-json`, 1, 1,
-	)
 
 	e.ExportDeliverHTTP(context.TODO(), db, d, task)
 
 	iAssertStatus(t, db, del.ID,
 		database.DeliveryStatusFailed,
 	)
+
+	iAssertResultFailed(t, db, del.ID)
 }
 
-// TestDeliverHTTP_InvalidConfigUnrecordedStaysPending: a delivery is
+// --- notify batching ---
-// failed for an invalid config only once the reason is recorded.
-// Unrecorded, it stays pending, where the sweep finds it again.
-func TestDeliverHTTP_InvalidConfigUnrecordedStaysPending(t *testing.T) {
-	t.Parallel()
-
-	db := testWebhookDB(t)
-	e := testEngine(t, 1)
-
-	event, del := iSeedEventAndDelivery(
-		t, db, `{"config":"invalid"}`, "",
-	)
-
-	task, d := iHTTPTaskAndDelivery(
-		event, del, "bad-config", `not-json`, 1, 1,
-	)
-
-	require.NoError(t, db.Exec("drop table delivery_results").Error)
-
-	e.ExportDeliverHTTP(context.TODO(), db, d, task)
-
-	iAssertStatus(t, db, del.ID,
-		database.DeliveryStatusPending,
-	)
-}
-
-// --- Notify batching ---
 
 func TestNotify_MultipleTasks(t *testing.T) {
 	t.Parallel()
@@ -1518,7 +1467,7 @@ func TestNotify_MultipleTasks(t *testing.T) {
 		}
 	}
 
-	e.Notify(tasks)
+	e.ExportNotify(tasks)
 
 	for i := range 5 {
 		select {

internal/delivery/engine_lifecycle_test.go

@@ -29,7 +29,7 @@ const (
 	// OnStart before the caller may enqueue work. A worker pool
 	// wrongly rooted in the already-done hook context has nothing
 	// but ctx.Done() ready in its select, so it is deterministically
-	// gone by the end of this window. Without the wait, Notify would
+	// gone by the end of this window. Without the wait, notify would
 	// race the pool's very first select, in which a ready ctx.Done()
 	// and a ready deliveryCh are chosen between at random and a
 	// doomed pool still delivers.
@@ -99,7 +99,7 @@ func requireStopHookExpires(
 // the caller can drive OnStop too.
 //
 // Callers must not seed pending or retrying deliveries before
-// calling this: restart recovery enqueues those during startup,
+// calling this: the recovery routine's run at start enqueues those,
 // which would put work in the queue while the pool is still
 // racing its first select.
 func startEngineViaHook(
@@ -178,11 +178,11 @@ func TestEngine_WorkersOutliveStartHookContext(t *testing.T) {
 		_ = lc.hooks[0].OnStop(context.Background())
 	})
 
-	// Seeded only after the pool has settled, so restart recovery
+	// Seeded only after the pool has settled, so the recovery
-	// cannot enqueue it during startup.
+	// routine's run at start cannot enqueue it.
 	deliveryID, task := seedLogTask(t, s)
 
-	s.Engine.Notify([]delivery.Task{task})
+	s.Engine.ExportNotify([]delivery.Task{task})
 
 	iWaitForDelivered(t, s.WebhookDB, deliveryID)
 }
@@ -202,7 +202,7 @@ func TestEngine_StopHookStopsWorkers(t *testing.T) {
 	// Let the pool prove it is running before stopping it, so a
 	// fast OnStop cannot pass by stopping something already dead.
 	firstID, firstTask := seedLogTask(t, s)
-	s.Engine.Notify([]delivery.Task{firstTask})
+	s.Engine.ExportNotify([]delivery.Task{firstTask})
 	iWaitForDelivered(t, s.WebhookDB, firstID)
 
 	var stopErr error
@@ -232,7 +232,7 @@ func TestEngine_StopHookStopsWorkers(t *testing.T) {
 	// With every worker gone, a freshly notified task must sit
 	// untouched in the queue rather than being delivered.
 	secondID, secondTask := seedLogTask(t, s)
-	s.Engine.Notify([]delivery.Task{secondTask})
+	s.Engine.ExportNotify([]delivery.Task{secondTask})
 
 	time.Sleep(200 * time.Millisecond)
 
@@ -309,13 +309,12 @@ func seedHeldDelivery(
 	))
 	t.Cleanup(ts.Close)
 
-	cfg := iHTTPConfig(ts.URL)
 	targetID := uuid.New().String()
 
 	iCreateWebhook(t, s.MainDB, s.WebhookID, "hook")
 	iCreateTarget(
 		t, s.MainDB, targetID, s.WebhookID, "held",
-		database.TargetTypeHTTP, cfg, maxAttempts,
+		database.TargetTypeHTTP, ts.URL, maxAttempts,
 	)
 
 	event := iSeedEvent(t, s.WebhookDB, s.WebhookID, `{"held":true}`)
@@ -324,7 +323,7 @@ func seedHeldDelivery(
 	bodyStr := event.Body
 
 	return iTask(
-		d, event, s.WebhookID, targetID, "held", cfg,
+		d, event, s.WebhookID, targetID, "held", ts.URL,
 		maxAttempts, attemptNum, &bodyStr,
 	), arrived
 }
@@ -345,15 +344,15 @@ func stopDuringAttempt(
 	require.NoError(t, lc.hooks[0].OnStop(context.Background()))
 }
 
-// requireRequeued runs restart recovery on the stopped engine and
+// requireRequeued runs the recovery routine as at start on the stopped
-// requires it to queue task's attempt again on ch.
+// engine and requires it to queue task's attempt again on ch.
 func requireRequeued(
 	t *testing.T, s iSetup, ch <-chan delivery.Task, task delivery.Task,
 ) {
 	t.Helper()
 
 	s.Engine.ExportRecoverWebhookDeliveries(
-		context.Background(), s.WebhookID,
+		context.Background(), s.WebhookID, atStart,
 	)
 
 	select {
@@ -361,7 +360,7 @@ func requireRequeued(
 		assert.Equal(t, task.DeliveryID, got.DeliveryID)
 		assert.Equal(t, task.AttemptNum, got.AttemptNum)
 	case <-time.After(5 * time.Second):
-		t.Fatal("restart recovery did not queue the delivery again")
+		t.Fatal("recovery at start did not queue the delivery again")
 	}
 }
 
@@ -371,7 +370,8 @@ func requireRequeued(
 // no retries that was the delivery's only attempt, recorded as failed
 // with "context canceled", and nothing ever sent it again. The
 // delivery must instead stay pending, with no result and no count in
-// the attempt metrics, for restart recovery to send.
+// the attempt metrics, for the recovery routine to send at the next
+// start.
 func TestEngine_StopLeavesFireAndForgetAttemptPending(t *testing.T) {
 	t.Parallel()
 
@@ -383,7 +383,7 @@ func TestEngine_StopLeavesFireAndForgetAttemptPending(t *testing.T) {
 		t, s, 1, database.DeliveryStatusPending, 1,
 	)
 
-	s.Engine.Notify([]delivery.Task{task})
+	s.Engine.ExportNotify([]delivery.Task{task})
 	stopDuringAttempt(t, lc, arrived)
 
 	iAssertStatus(
@@ -399,8 +399,8 @@ func TestEngine_StopLeavesFireAndForgetAttemptPending(t *testing.T) {
 // TestEngine_StopLeavesLastRetryAttemptRetrying is the same regression
 // for a target with retries, on its last attempt: the cancelled attempt
 // used to exhaust the retries and end the delivery failed. It must stay
-// retrying with only its earlier attempt recorded, and restart recovery
+// retrying with only its earlier attempt recorded, and the recovery
-// must send that last attempt again.
+// routine at the next start must send that last attempt again.
 func TestEngine_StopLeavesLastRetryAttemptRetrying(t *testing.T) {
 	t.Parallel()
 
@@ -448,7 +448,7 @@ func deliverToArchive(t *testing.T, s iSetup) string {
 	task.TargetID = tgt.ID
 	task.TargetType = database.TargetTypeDatabase
 
-	s.Engine.Notify([]delivery.Task{task})
+	s.Engine.ExportNotify([]delivery.Task{task})
 
 	iWaitForDelivered(t, s.WebhookDB, deliveryID)
 

internal/delivery/engine_test.go

@@ -65,20 +65,6 @@ func testEngine(
 	)
 }
 
-func newHTTPTargetConfig(url string) string {
-	cfg := delivery.HTTPTargetConfig{URL: url}
-
-	data, err := json.Marshal(cfg)
-	if err != nil {
-		panic(
-			"failed to marshal HTTPTargetConfig: " +
-				err.Error(),
-		)
-	}
-
-	return string(data)
-}
-
 func seedEvent(
 	t *testing.T, db *gorm.DB, body string,
 ) database.Event {
@@ -141,19 +127,19 @@ type httpDeliveryFixture struct {
 func buildHTTPFixture(
 	dlv database.Delivery,
 	event database.Event,
-	targetID, name, config string,
+	targetID, name, targetURL string,
 	maxAttempts, attemptNum int,
 ) httpDeliveryFixture {
 	task := &delivery.Task{
-		DeliveryID:   dlv.ID,
+		DeliveryID:  dlv.ID,
-		EventID:      event.ID,
+		EventID:     event.ID,
-		WebhookID:    event.WebhookID,
+		WebhookID:   event.WebhookID,
-		TargetID:     targetID,
+		TargetID:    targetID,
-		TargetName:   name,
+		TargetName:  name,
-		TargetType:   database.TargetTypeHTTP,
+		TargetType:  database.TargetTypeHTTP,
-		TargetConfig: config,
+		TargetURL:   targetURL,
-		MaxAttempts:  maxAttempts,
+		MaxAttempts: maxAttempts,
-		AttemptNum:   attemptNum,
+		AttemptNum:  attemptNum,
 	}
 
 	d := &database.Delivery{
@@ -164,7 +150,7 @@ func buildHTTPFixture(
 		Target: database.Target{
 			Name:        name,
 			Type:        database.TargetTypeHTTP,
-			Config:      config,
+			URL:         targetURL,
 			MaxAttempts: maxAttempts,
 		},
 	}
@@ -232,7 +218,7 @@ func TestNotify_NonBlocking(t *testing.T) {
 	done := make(chan struct{})
 
 	go func() {
-		e.Notify([]delivery.Task{
+		e.ExportNotify([]delivery.Task{
 			{DeliveryID: "overflow-1"},
 			{DeliveryID: "overflow-2"},
 		})
@@ -243,7 +229,7 @@ func TestNotify_NonBlocking(t *testing.T) {
 	case <-done:
 	case <-time.After(2 * time.Second):
 		t.Fatal(
-			"Notify blocked when delivery channel was full",
+			"notify blocked when delivery channel was full",
 		)
 	}
 }
@@ -275,9 +261,8 @@ func TestDeliverHTTP_Success(t *testing.T) {
 		database.DeliveryStatusPending,
 	)
 
-	cfg := newHTTPTargetConfig(ts.URL)
 	fix := buildHTTPFixture(
-		dlv, event, targetID, "test-http", cfg, 1, 1,
+		dlv, event, targetID, "test-http", ts.URL, 1, 1,
 	)
 
 	e.ExportDeliverHTTP(
@@ -321,10 +306,9 @@ func TestDeliverHTTP_Failure(t *testing.T) {
 		database.DeliveryStatusPending,
 	)
 
-	cfg := newHTTPTargetConfig(ts.URL)
 	fix := buildHTTPFixture(
 		dlv, event, targetID,
-		"test-http-fail", cfg, 1, 1,
+		"test-http-fail", ts.URL, 1, 1,
 	)
 
 	e.ExportDeliverHTTP(
@@ -351,7 +335,7 @@ func TestDeliverDatabase_ImmediateSuccess(
 	// The database target archives for real, so the engine needs
 	// the target in the main database and a data directory.
 	env := setupArchiveTest(t)
-	tgt := env.seedDatabaseTarget(t, "")
+	tgt := env.seedDatabaseTarget(t)
 
 	event := seedEvent(t, db, `{"db":"target"}`)
 	d := seedDatabaseTargetDelivery(t, db, event, tgt)
@@ -452,10 +436,9 @@ func TestDeliverHTTP_WithRetries_Success(t *testing.T) {
 		database.DeliveryStatusPending,
 	)
 
-	cfg := newHTTPTargetConfig(ts.URL)
 	fix := buildHTTPFixture(
 		dlv, event, targetID,
-		"test-http-retry", cfg, 5, 1,
+		"test-http-retry", ts.URL, 5, 1,
 	)
 
 	e.ExportDeliverHTTP(
@@ -510,13 +493,12 @@ func TestDeliverHTTP_MaxAttemptsExhausted(t *testing.T) {
 		database.DeliveryStatusPending,
 	)
 
-	cfg := newHTTPTargetConfig(ts.URL)
 	sched := &recordingScheduler{}
 
 	for attempt := 1; attempt <= maxAttempts; attempt++ {
 		fix := buildHTTPFixture(
 			dlv, event, targetID,
-			"test-http-exhaust", cfg, maxAttempts, attempt,
+			"test-http-exhaust", ts.URL, maxAttempts, attempt,
 		)
 
 		e.ExportDeliverHTTPWithScheduler(
@@ -574,10 +556,9 @@ func TestDeliverHTTP_SingleAttemptSkipsCircuitBreaker(t *testing.T) {
 		database.DeliveryStatusPending,
 	)
 
-	cfg := newHTTPTargetConfig(ts.URL)
 	fix := buildHTTPFixture(
 		dlv, event, targetID,
-		"test-http-single", cfg, 1, 1,
+		"test-http-single", ts.URL, 1, 1,
 	)
 	sched := &recordingScheduler{}
 
@@ -624,10 +605,9 @@ func TestDeliverHTTP_SchedulesRetryOnFailure(
 		database.DeliveryStatusPending,
 	)
 
-	cfg := newHTTPTargetConfig(ts.URL)
 	fix := buildHTTPFixture(
 		dlv, event, targetID,
-		"test-http-schedule", cfg, 5, 1,
+		"test-http-schedule", ts.URL, 5, 1,
 	)
 
 	e.ExportDeliverHTTP(
@@ -789,7 +769,7 @@ func seedConcurrencyTasks(
 	t *testing.T,
 	db *gorm.DB,
 	n int,
-	targetCfg string,
+	targetURL string,
 ) ([]database.Delivery, []delivery.Task) {
 	t.Helper()
 
@@ -815,21 +795,21 @@ func seedConcurrencyTasks(
 			Target: database.Target{
 				Name:        fmt.Sprintf("task-%d", i),
 				Type:        database.TargetTypeHTTP,
-				Config:      targetCfg,
+				URL:         targetURL,
 				MaxAttempts: 1,
 			},
 		}
 		tasks[i].ID = dlv.ID
 
 		dtasks[i] = delivery.Task{
-			DeliveryID:   tasks[i].ID,
+			DeliveryID:  tasks[i].ID,
-			EventID:      tasks[i].EventID,
+			EventID:     tasks[i].EventID,
-			TargetID:     tasks[i].TargetID,
+			TargetID:    tasks[i].TargetID,
-			TargetName:   tasks[i].Target.Name,
+			TargetName:  tasks[i].Target.Name,
-			TargetType:   tasks[i].Target.Type,
+			TargetType:  tasks[i].Target.Type,
-			TargetConfig: tasks[i].Target.Config,
+			TargetURL:   tasks[i].Target.URL,
-			MaxAttempts:  1,
+			MaxAttempts: 1,
-			AttemptNum:   1,
+			AttemptNum:  1,
 		}
 	}
 
@@ -865,9 +845,8 @@ func TestWorkerPool_BoundedConcurrency(t *testing.T) {
 	defer ts.Close()
 
 	e := testEngine(t, numWorkers)
-	cfg := newHTTPTargetConfig(ts.URL)
 	tasks, dtasks := seedConcurrencyTasks(
-		t, db, numTasks, cfg,
+		t, db, numTasks, ts.URL,
 	)
 
 	runConcurrencyWorkers(
@@ -948,12 +927,9 @@ func TestDeliverHTTP_CircuitBreakerBlocks(t *testing.T) {
 		database.DeliveryStatusPending,
 	)
 
-	cfg := newHTTPTargetConfig(
-		"http://will-not-be-called.invalid",
-	)
 	fix := buildHTTPFixture(
 		dlv, event, targetID,
-		"test-cb-block", cfg, 5, 1,
+		"test-cb-block", "http://will-not-be-called.invalid", 5, 1,
 	)
 
 	e.ExportDeliverHTTP(
@@ -1016,9 +992,8 @@ func TestDeliverHTTP_HalfOpenBreakerDelaysQueuedTasks(t *testing.T) {
 	require.True(t, cb.Allow(), "the probe delivery should go through")
 	require.Equal(t, delivery.CircuitHalfOpen, cb.State())
 
-	cfg := newHTTPTargetConfig(
+	const targetURL = "http://will-not-be-called.invalid"
-		"http://will-not-be-called.invalid",
+
-	)
 	sched := &recordingScheduler{}
 
 	const queued, passes = 3, 4
@@ -1040,7 +1015,7 @@ func TestDeliverHTTP_HalfOpenBreakerDelaysQueuedTasks(t *testing.T) {
 
 			fix := buildHTTPFixture(
 				row, event, targetID,
-				"test-cb-half-open", cfg, 5, 1,
+				"test-cb-half-open", targetURL, 5, 1,
 			)
 
 			e.ExportDeliverHTTPWithScheduler(
@@ -1155,62 +1130,6 @@ func TestStateAndCooldown_ReadsHTTPAndSlackBreakers(t *testing.T) {
 	assert.Zero(t, cooldown, "half-open")
 }
 
-func TestParseHTTPConfig_Valid(t *testing.T) {
-	t.Parallel()
-
-	e := testEngine(t, 1)
-
-	cfg, err := e.ExportParseHTTPConfig(
-		`{"url":"https://example.com/hook",` +
-			`"headers":{"X-Token":"secret"}}`,
-	)
-
-	require.NoError(t, err)
-	assert.Equal(t, "https://example.com/hook", cfg.URL)
-	assert.Equal(t, "secret", cfg.Headers["X-Token"])
-}
-
-func TestParseHTTPConfig_Empty(t *testing.T) {
-	t.Parallel()
-
-	e := testEngine(t, 1)
-
-	_, err := e.ExportParseHTTPConfig("")
-
-	assert.Error(t, err,
-		"empty config should return error",
-	)
-}
-
-func TestParseHTTPConfig_MissingURL(t *testing.T) {
-	t.Parallel()
-
-	e := testEngine(t, 1)
-
-	_, err := e.ExportParseHTTPConfig(
-		`{"headers":{"X-Token":"secret"}}`,
-	)
-
-	assert.Error(t, err,
-		"config without URL should return error",
-	)
-}
-
-func TestParseHTTPConfig_Undecodable(t *testing.T) {
-	t.Parallel()
-
-	e := testEngine(t, 1)
-
-	_, err := e.ExportParseHTTPConfig(
-		`{"url":"https://example.com/hook","timeout":"soon"}`,
-	)
-
-	assert.Error(t, err,
-		"config that does not decode should return error, "+
-			"even when the part that did names a URL",
-	)
-}
-
 func TestScheduleRetry_SendsToRetryChannel(
 	t *testing.T,
 ) {
@@ -1358,7 +1277,7 @@ func TestDoHTTPRequest_ForwardsHeaders(t *testing.T) {
 
 	e := testEngine(t, 1)
 
-	cfg := &delivery.HTTPTargetConfig{
+	target := &database.Target{
 		URL: ts.URL,
 		Headers: map[string]string{
 			"X-Target-Auth": "bearer xyz",
@@ -1373,7 +1292,7 @@ func TestDoHTTPRequest_ForwardsHeaders(t *testing.T) {
 	}
 
 	statusCode, _, _, err := e.ExportDoHTTPRequest(
-		context.TODO(), cfg, event,
+		context.TODO(), target, event,
 	)
 
 	require.NoError(t, err)
@@ -1415,7 +1334,7 @@ func TestDoHTTPRequest_CutShortResponseIsAnError(t *testing.T) {
 
 	_, body, _, err := e.ExportDoHTTPRequest(
 		context.TODO(),
-		&delivery.HTTPTargetConfig{URL: ts.URL},
+		&database.Target{URL: ts.URL},
 		&database.Event{},
 	)
 
@@ -1467,9 +1386,9 @@ func TestApplyRequestHeaders_SendsOneContentType(t *testing.T) {
 			})
 			require.NoError(t, err)
 
-			cfg := &delivery.HTTPTargetConfig{}
+			var configured map[string]string
 			if tc.configured != "" {
-				cfg.Headers = map[string]string{
+				configured = map[string]string{
 					headerContentType: tc.configured,
 				}
 			}
@@ -1488,7 +1407,7 @@ func TestApplyRequestHeaders_SendsOneContentType(t *testing.T) {
 					Headers:     string(inbound),
 					ContentType: tc.event,
 				},
-				cfg,
+				configured,
 				"webhooker/dev",
 			)
 
@@ -1519,7 +1438,7 @@ func TestApplyRequestHeaders_UndecodableInboundForwardsNothing(
 		&database.Event{
 			Headers: `{"X-Custom":["value1"],"X-Broken":"not a list"}`,
 		},
-		&delivery.HTTPTargetConfig{},
+		nil,
 		"webhooker/dev",
 	)
 
@@ -1537,7 +1456,7 @@ func TestProcessDelivery_RoutesToCorrectHandler(
 	// The database target archives for real, so the engine needs
 	// the target in the main database and a data directory.
 	env := setupArchiveTest(t)
-	archive := env.seedDatabaseTarget(t, "")
+	archive := env.seedDatabaseTarget(t)
 
 	tests := []struct {
 		name       string
@@ -1622,51 +1541,6 @@ func TestMaxInlineBodySize_Constant(t *testing.T) {
 	)
 }
 
-func TestParseSlackConfig_Valid(t *testing.T) {
-	t.Parallel()
-
-	e := testEngine(t, 1)
-
-	cfg, err := e.ExportParseSlackConfig(
-		`{"webhookUrl":"https://hooks.slack.com/services/T00/B00/xxx"}`,
-	)
-
-	require.NoError(t, err)
-
-	assert.Equal(t,
-		"https://hooks.slack.com/services/T00/B00/xxx",
-		cfg.WebhookURL,
-	)
-}
-
-func TestParseSlackConfig_Empty(t *testing.T) {
-	t.Parallel()
-
-	e := testEngine(t, 1)
-
-	_, err := e.ExportParseSlackConfig("")
-
-	assert.Error(t, err,
-		"empty config should return error",
-	)
-}
-
-func TestParseSlackConfig_MissingWebhookURL(
-	t *testing.T,
-) {
-	t.Parallel()
-
-	e := testEngine(t, 1)
-
-	_, err := e.ExportParseSlackConfig(
-		`{"other":"field"}`,
-	)
-
-	assert.Error(t, err,
-		"config without webhook_url should return error",
-	)
-}
-
 func TestFormatSlackMessage_JSONBody(t *testing.T) {
 	t.Parallel()
 
@@ -1763,11 +1637,11 @@ func TestFormatSlackMessage_LargeJSONTruncated(
 }
 
 // buildSlackDelivery creates a database.Delivery
-// with a Slack target config for testing.
+// to a Slack target with the given webhook URL for testing.
 func buildSlackDelivery(
 	dlv database.Delivery,
 	event database.Event,
-	targetID, name, slackCfg string,
+	targetID, name, webhookURL string,
 ) *database.Delivery {
 	d := &database.Delivery{
 		EventID:  event.ID,
@@ -1777,7 +1651,7 @@ func buildSlackDelivery(
 		Target: database.Target{
 			Name:        name,
 			Type:        database.TargetTypeSlack,
-			Config:      slackCfg,
+			URL:         webhookURL,
 			MaxAttempts: 1,
 		},
 	}
@@ -1815,11 +1689,10 @@ func TestDeliverSlack_Success(t *testing.T) {
 	)
 	defer ts.Close()
 
-	e, targetID, slackCfg, event, dlv :=
+	e, targetID, event, dlv := setupSlackTest(t, db)
-		setupSlackTest(t, db, ts.URL)
 
 	d := buildSlackDelivery(
-		dlv, event, targetID, "test-slack", slackCfg,
+		dlv, event, targetID, "test-slack", ts.URL,
 	)
 
 	e.ExportDeliverSlack(context.TODO(), db, d)
@@ -1838,9 +1711,8 @@ func TestDeliverSlack_Success(t *testing.T) {
 func setupSlackTest(
 	t *testing.T,
 	db *gorm.DB,
-	serverURL string,
 ) (
-	*delivery.Engine, string, string,
+	*delivery.Engine, string,
 	database.Event, database.Delivery,
 ) {
 	t.Helper()
@@ -1848,13 +1720,6 @@ func setupSlackTest(
 	e := testEngine(t, 1)
 	targetID := uuid.New().String()
 
-	cfgBytes, err := json.Marshal(
-		delivery.SlackTargetConfig{
-			WebhookURL: serverURL,
-		},
-	)
-	require.NoError(t, err)
-
 	event := seedEvent(
 		t, db, `{"action":"test","data":"value"}`,
 	)
@@ -1864,7 +1729,7 @@ func setupSlackTest(
 		database.DeliveryStatusPending,
 	)
 
-	return e, targetID, string(cfgBytes), event, dlv
+	return e, targetID, event, dlv
 }
 
 func assertSlackPayload(
@@ -1913,13 +1778,6 @@ func TestDeliverSlack_Failure(t *testing.T) {
 	e := testEngine(t, 1)
 	targetID := uuid.New().String()
 
-	slackCfg, err := json.Marshal(
-		delivery.SlackTargetConfig{
-			WebhookURL: ts.URL,
-		},
-	)
-	require.NoError(t, err)
-
 	event := seedEvent(t, db, `{"test":true}`)
 
 	dlv := seedDelivery(
@@ -1929,7 +1787,7 @@ func TestDeliverSlack_Failure(t *testing.T) {
 
 	d := buildSlackDelivery(
 		dlv, event, targetID,
-		"test-slack-fail", string(slackCfg),
+		"test-slack-fail", ts.URL,
 	)
 
 	e.ExportDeliverSlack(context.TODO(), db, d)
@@ -1943,7 +1801,10 @@ func TestDeliverSlack_Failure(t *testing.T) {
 	)
 }
 
-func TestDeliverSlack_InvalidConfig(t *testing.T) {
+// TestDeliverSlack_NoURL proves a Slack target without a URL, which
+// the forms never store, fails its delivery rather than reporting it
+// delivered.
+func TestDeliverSlack_NoURL(t *testing.T) {
 	t.Parallel()
 
 	db := testWebhookDB(t)
@@ -1964,7 +1825,6 @@ func TestDeliverSlack_InvalidConfig(t *testing.T) {
 		Target: database.Target{
 			Name:        "test-slack-bad",
 			Type:        database.TargetTypeSlack,
-			Config:      `{"not_webhook_url":"missing"}`,
 			MaxAttempts: 1,
 		},
 	}
@@ -2002,13 +1862,6 @@ func TestProcessDelivery_RoutesToSlack(t *testing.T) {
 
 	e := testEngine(t, 1)
 
-	slackCfg, err := json.Marshal(
-		delivery.SlackTargetConfig{
-			WebhookURL: ts.URL,
-		},
-	)
-	require.NoError(t, err)
-
 	event := seedEvent(t, db, `{"route":"slack"}`)
 
 	dlv := seedDelivery(
@@ -2018,7 +1871,7 @@ func TestProcessDelivery_RoutesToSlack(t *testing.T) {
 
 	d := buildSlackDelivery(
 		dlv, event, dlv.TargetID,
-		"test-slack-route", string(slackCfg),
+		"test-slack-route", ts.URL,
 	)
 
 	task := &delivery.Task{
@@ -2133,7 +1986,7 @@ func TestDeliverLog_LogsFullContent(t *testing.T) {
 func buildSlackRetryDelivery(
 	dlv database.Delivery,
 	event database.Event,
-	targetID, cfg string,
+	targetID, webhookURL string,
 ) *database.Delivery {
 	d := &database.Delivery{
 		EventID:  event.ID,
@@ -2143,7 +1996,7 @@ func buildSlackRetryDelivery(
 		Target: database.Target{
 			Name:        "test-slack-retry",
 			Type:        database.TargetTypeSlack,
-			Config:      cfg,
+			URL:         webhookURL,
 			MaxAttempts: 5,
 		},
 	}
@@ -2162,11 +2015,6 @@ func TestDeliverSlack_WithRetries_SchedulesRetry(
 	e := testEngine(t, 1)
 	targetID := uuid.New().String()
 
-	slackCfg, err := json.Marshal(
-		delivery.SlackTargetConfig{WebhookURL: ts.URL},
-	)
-	require.NoError(t, err)
-
 	event := seedEvent(t, db, `{"slack":"retry"}`)
 
 	dlv := seedDelivery(
@@ -2175,7 +2023,7 @@ func TestDeliverSlack_WithRetries_SchedulesRetry(
 	)
 
 	d := buildSlackRetryDelivery(
-		dlv, event, targetID, string(slackCfg),
+		dlv, event, targetID, ts.URL,
 	)
 
 	task := &delivery.Task{

internal/delivery/event_db_isolation_test.go

@@ -69,7 +69,6 @@ func TestEventDBHoldsNoTargetRows(t *testing.T) {
 	))
 	defer ts.Close()
 
-	cfg := iHTTPConfig(ts.URL)
 	targetID := uuid.New().String()
 	dbPath := s.DBMgr.DBPath(s.WebhookID)
 
@@ -85,7 +84,7 @@ func TestEventDBHoldsNoTargetRows(t *testing.T) {
 	)
 	task := iTask(
 		d, event, s.WebhookID, targetID,
-		"leaky-target", cfg, 5, 1, &body,
+		"leaky-target", ts.URL, 5, 1, &body,
 	)
 
 	s.Engine.ExportProcessNewTask(context.TODO(), &task)
@@ -102,7 +101,7 @@ func TestEventDBHoldsNoTargetRows(t *testing.T) {
 	// https://git.eeqj.de/sneak/webhooker/issues/107.
 	iCreateTarget(
 		t, s.MainDB, targetID, s.WebhookID, "leaky-target",
-		database.TargetTypeHTTP, cfg, 5,
+		database.TargetTypeHTTP, ts.URL, 5,
 	)
 
 	rd := iSeedDelivery(
@@ -111,7 +110,7 @@ func TestEventDBHoldsNoTargetRows(t *testing.T) {
 	)
 	rTask := iTask(
 		rd, event, s.WebhookID, targetID,
-		"leaky-target", cfg, 5, 2, &body,
+		"leaky-target", ts.URL, 5, 2, &body,
 	)
 
 	s.Engine.ExportProcessRetryTask(context.TODO(), &rTask)
@@ -138,7 +137,6 @@ func TestEventDBHoldsNoTargetRowsOnFailedDelivery(t *testing.T) {
 	))
 	defer ts.Close()
 
-	cfg := iHTTPConfig(ts.URL)
 	targetID := uuid.New().String()
 
 	event := iSeedEvent(
@@ -152,7 +150,7 @@ func TestEventDBHoldsNoTargetRowsOnFailedDelivery(t *testing.T) {
 	)
 	task := iTask(
 		d, event, s.WebhookID, targetID,
-		"leaky-target", cfg, 1, 1, &body,
+		"leaky-target", ts.URL, 1, 1, &body,
 	)
 
 	s.Engine.ExportProcessNewTask(context.TODO(), &task)

internal/delivery/event_timestamp_test.go

@@ -93,17 +93,6 @@ func (s *tsSink) text(t *testing.T) string {
 	}
 }
 
-func tsSlackConfig(t *testing.T, url string) string {
-	t.Helper()
-
-	data, err := json.Marshal(
-		delivery.SlackTargetConfig{WebhookURL: url},
-	)
-	require.NoError(t, err)
-
-	return string(data)
-}
-
 // tsSeedEvent writes an event whose CreatedAt is tsEventCreatedAt
 // rather than the write time, so an assertion on the rendered
 // timestamp cannot pass by accident against "roughly now".
@@ -142,7 +131,7 @@ func tsSeedEvent(
 // tsSeedTarget writes the slack target row into the main database.
 // The retry path confirms the target still exists before sending.
 func tsSeedTarget(
-	t *testing.T, mainDB *gorm.DB, webhookID, config string,
+	t *testing.T, mainDB *gorm.DB, webhookID, webhookURL string,
 ) database.Target {
 	t.Helper()
 
@@ -150,7 +139,7 @@ func tsSeedTarget(
 		WebhookID:   webhookID,
 		Name:        "slack-sink",
 		Type:        database.TargetTypeSlack,
-		Config:      config,
+		URL:         webhookURL,
 		Active:      true,
 		MaxAttempts: 1,
 	}
@@ -176,7 +165,7 @@ func tsTask(
 		TargetID:     target.ID,
 		TargetName:   target.Name,
 		TargetType:   database.TargetTypeSlack,
-		TargetConfig: target.Config,
+		TargetURL:    target.URL,
 		MaxAttempts:  1,
 		Method:       event.Method,
 		Headers:      event.Headers,
@@ -226,8 +215,7 @@ func (c tsCase) run(t *testing.T) (iSetup, database.Delivery, string) {
 	s := newISetup(t)
 	sink := newTSSink(t)
 
-	cfg := tsSlackConfig(t, sink.URL)
+	target := tsSeedTarget(t, s.MainDB, s.WebhookID, sink.URL)
-	target := tsSeedTarget(t, s.MainDB, s.WebhookID, cfg)
 	event := tsSeedEvent(t, s.WebhookDB, s.WebhookID)
 
 	d := iSeedDelivery(
@@ -338,8 +326,7 @@ func TestFormatSlackMessageOverTaskReconstructedEvent(
 
 	s := newISetup(t)
 
-	cfg := tsSlackConfig(t, tsUndeliverableHook)
+	target := tsSeedTarget(t, s.MainDB, s.WebhookID, tsUndeliverableHook)
-	target := tsSeedTarget(t, s.MainDB, s.WebhookID, cfg)
 	event := tsSeedEvent(t, s.WebhookDB, s.WebhookID)
 
 	d := iSeedDelivery(
@@ -410,8 +397,7 @@ func TestEventReconstructionSurvivesAReapedRow(t *testing.T) {
 
 	s := newISetup(t)
 
-	cfg := tsSlackConfig(t, tsUndeliverableHook)
+	target := tsSeedTarget(t, s.MainDB, s.WebhookID, tsUndeliverableHook)
-	target := tsSeedTarget(t, s.MainDB, s.WebhookID, cfg)
 	event := tsSeedEvent(t, s.WebhookDB, s.WebhookID)
 
 	d := iSeedDelivery(

internal/delivery/export_test.go

@@ -77,10 +77,10 @@ func ExportIsForwardableHeader(name string) bool {
 func ExportApplyRequestHeaders(
 	req *http.Request,
 	event *database.Event,
-	cfg *HTTPTargetConfig,
+	configured map[string]string,
 	userAgent string,
 ) []string {
-	return applyRequestHeaders(req, event, cfg, userAgent)
+	return applyRequestHeaders(req, event, configured, userAgent)
 }
 
 // ExportTruncate exposes truncate for testing.
@@ -158,6 +158,11 @@ func (e *Engine) ExportUpdateDeliveryStatus(
 	return e.updateDeliveryStatus(webhookDB, d, "", status)
 }
 
+// ExportNotify exposes notify.
+func (e *Engine) ExportNotify(tasks []Task) {
+	e.notify(tasks)
+}
+
 // ExportProcessNewTask exposes processNewTask.
 func (e *Engine) ExportProcessNewTask(
 	ctx context.Context, task *Task,
@@ -216,37 +221,23 @@ func (e *Engine) ExportSetSlackCircuitBreaker(
 	e.slackTarget.circuitBreakers.Store(targetID, cb)
 }
 
-// ExportParseHTTPConfig exposes parseHTTPConfig.
-func (e *Engine) ExportParseHTTPConfig(
-	configJSON string,
-) (*HTTPTargetConfig, error) {
-	return parseHTTPConfig(configJSON)
-}
-
-// ExportParseSlackConfig exposes parseSlackConfig.
-func (e *Engine) ExportParseSlackConfig(
-	configJSON string,
-) (*SlackTargetConfig, error) {
-	return parseSlackConfig(configJSON)
-}
-
 // ExportDoHTTPRequest exposes the http target's
 // doHTTPRequest.
 func (e *Engine) ExportDoHTTPRequest(
 	ctx context.Context,
-	cfg *HTTPTargetConfig,
+	target *database.Target,
 	event *database.Event,
 ) (int, string, int64, error) {
-	return e.httpTarget.doHTTPRequest(ctx, cfg, event)
+	return e.httpTarget.doHTTPRequest(ctx, target, event)
 }
 
 // ExportClientForRequest exposes the http target's
 // clientForRequest.
 func (e *Engine) ExportClientForRequest(
-	cfg *HTTPTargetConfig,
+	timeoutSeconds int,
 	originScoped []string,
 ) *http.Client {
-	return e.httpTarget.clientForRequest(cfg, originScoped)
+	return e.httpTarget.clientForRequest(timeoutSeconds, originScoped)
 }
 
 // ErrExportTooManyRedirects exposes the sentinel the redirect
@@ -281,32 +272,27 @@ func (e *Engine) ExportRecoverPendingDeliveries(
 	ctx context.Context,
 	webhookDB *gorm.DB,
 	webhookID string,
+	atStart bool,
 ) {
 	e.recoverPendingDeliveries(
-		ctx, webhookDB, webhookID,
+		ctx, webhookDB, webhookID, atStart,
 	)
 }
 
 // ExportRecoverWebhookDeliveries exposes
 // recoverWebhookDeliveries.
 func (e *Engine) ExportRecoverWebhookDeliveries(
-	ctx context.Context, webhookID string,
+	ctx context.Context, webhookID string, atStart bool,
 ) {
-	e.recoverWebhookDeliveries(ctx, webhookID)
+	e.recoverWebhookDeliveries(ctx, webhookID, atStart)
 }
 
-// ExportRecoverInFlight exposes recoverInFlight.
+// ExportRecoverDeliveries exposes recoverDeliveries, the recovery
-func (e *Engine) ExportRecoverInFlight(
+// routine.
-	ctx context.Context,
+func (e *Engine) ExportRecoverDeliveries(
+	ctx context.Context, atStart bool,
 ) {
-	e.recoverInFlight(ctx)
+	e.recoverDeliveries(ctx, atStart)
-}
-
-// ExportSweepWebhookRetries exposes sweepWebhookRetries.
-func (e *Engine) ExportSweepWebhookRetries(
-	ctx context.Context, webhookID string,
-) {
-	e.sweepWebhookRetries(ctx, webhookID)
 }
 
 // ExportStart exposes start for testing.
@@ -353,9 +339,9 @@ func (e *Engine) ExportRetainDelivery(deliveryID string) bool {
 
 // ExportRecoverRetryingDeliveries exposes recoverRetryingDeliveries.
 func (e *Engine) ExportRecoverRetryingDeliveries(
-	webhookDB *gorm.DB, webhookID string,
+	ctx context.Context, webhookDB *gorm.DB, webhookID string,
 ) {
-	e.recoverRetryingDeliveries(webhookDB, webhookID)
+	e.recoverRetryingDeliveries(ctx, webhookDB, webhookID)
 }
 
 // ExportFailMissingTarget exposes failMissingTarget, so a test can hand

internal/delivery/inflight.go

@@ -6,10 +6,10 @@ import "sync"
 //
 // A delivery is owned from the moment a task for it is handed to a
 // channel or to a retry timer until the engine has no further plan for
-// it in memory. Restart recovery and both arms of the periodic sweep
+// it in memory. The recovery routine, at start and on every tick of the
-// re-dispatch only deliveries the set does not hold, which is what
+// sweep, re-dispatches only deliveries the set does not hold, which is
-// makes them exact rather than a guess about how long a row has sat at
+// what makes it exact rather than a guess about how long a row has sat
-// pending.
+// at pending.
 //
 // This replaces reasoning from timestamps. A delivery's row says
 // pending from creation until its outcome is written, which covers
@@ -25,8 +25,8 @@ import "sync"
 // In-memory state is sufficient because a data directory admits one
 // process: internal/datadir takes an flock on it at startup and a
 // second instance refuses to run. Deliveries owned by a process that
-// died are not in any successor's set, and restart recovery is what
+// died are not in any successor's set, and the recovery routine's run
-// picks those up.
+// at start is what picks those up.
 //
 // References are counted rather than held as a plain set because
 // ownership outlives the worker that took it. A target that schedules
@@ -61,9 +61,9 @@ func (s *inflightSet) retain(deliveryID string) {
 
 // retainIdle takes the first reference on a delivery, and reports
 // whether it got it. It fails when the engine already owns the
-// delivery, which is what makes two claimants — restart recovery and
+// delivery, which is what makes two claimants — notify and the
-// the sweep run concurrently, or two sweep arms — mutually exclusive
+// recovery routine, say — mutually exclusive rather than merely
-// rather than merely atomic.
+// atomic.
 func (s *inflightSet) retainIdle(deliveryID string) bool {
 	s.mu.Lock()
 	defer s.mu.Unlock()

internal/delivery/inflight_test.go

@@ -84,9 +84,9 @@ func TestSweepLeavesAQueuedDeliveryAlone(t *testing.T) {
 	)
 	rAgePending(t, s.WebhookDB, d.ID)
 
-	// Queued exactly as the receiver queues it, and never dequeued:
+	// Queued exactly as StoreEvent queues it, and never dequeued:
 	// no workers are running in this engine.
-	s.Engine.Notify([]delivery.Task{{
+	s.Engine.ExportNotify([]delivery.Task{{
 		DeliveryID: d.ID,
 		EventID:    event.ID,
 		WebhookID:  s.WebhookID,
@@ -95,8 +95,8 @@ func TestSweepLeavesAQueuedDeliveryAlone(t *testing.T) {
 
 	require.Equal(t, 1, s.Engine.ExportInflightHeld())
 
-	s.Engine.ExportSweepWebhookRetries(
+	s.Engine.ExportRecoverWebhookDeliveries(
-		context.Background(), s.WebhookID,
+		context.Background(), s.WebhookID, onTick,
 	)
 
 	tasks := fDrain(s.Engine)
@@ -107,9 +107,11 @@ func TestSweepLeavesAQueuedDeliveryAlone(t *testing.T) {
 	)
 }
 
-// TestRecoveryAndSweepDoNotDoubleDispatch drives the two entry points
+// TestRecoveryAndSweepDoNotDoubleDispatch drives the recovery routine's
-// the engine starts concurrently against one aged pending row. Before
+// run at start and a tick of the sweep at once against one aged pending
-// ownership they both dispatched it.
+// row. The engine runs them one after the other, but notify can race
+// either, and ownership is what keeps any two claimants from both
+// sending. Before ownership the two runs both dispatched the row.
 func TestRecoveryAndSweepDoNotDoubleDispatch(t *testing.T) {
 	t.Parallel()
 
@@ -133,12 +135,12 @@ func TestRecoveryAndSweepDoNotDoubleDispatch(t *testing.T) {
 
 		wg.Go(func() {
 			s.Engine.ExportRecoverPendingDeliveries(
-				ctx, s.WebhookDB, s.WebhookID,
+				ctx, s.WebhookDB, s.WebhookID, atStart,
 			)
 		})
 		wg.Go(func() {
-			s.Engine.ExportSweepWebhookRetries(
+			s.Engine.ExportRecoverWebhookDeliveries(
-				ctx, s.WebhookID,
+				ctx, s.WebhookID, onTick,
 			)
 		})
 		wg.Wait()
@@ -222,7 +224,7 @@ func TestOwnershipIsReleasedAfterDelivery(t *testing.T) {
 
 	body := `{"released":true}`
 
-	s.Engine.Notify([]delivery.Task{{
+	s.Engine.ExportNotify([]delivery.Task{{
 		DeliveryID:   d.ID,
 		EventID:      event.ID,
 		WebhookID:    s.WebhookID,
@@ -246,10 +248,11 @@ func TestOwnershipIsReleasedAfterDelivery(t *testing.T) {
 }
 
 // TestNotifyAfterRecoveryDoesNotSendAgain is the startup race of
-// https://git.eeqj.de/sneak/webhooker/issues/299. The receiver has
+// https://git.eeqj.de/sneak/webhooker/issues/299. StoreEvent has
-// written a delivery, restart recovery finds it pending, sends it and
+// written a delivery, the recovery routine's run at start finds it
-// releases it, and only then does the receiver's Notify for it arrive.
+// pending, sends it and releases it, and only then does StoreEvent's
-// Nothing owns the delivery by then, so Notify takes it.
+// notify for it arrive. Nothing owns the delivery by then, so notify
+// takes it.
 func TestNotifyAfterRecoveryDoesNotSendAgain(t *testing.T) {
 	t.Parallel()
 
@@ -273,7 +276,8 @@ func TestNotifyAfterRecoveryDoesNotSendAgain(t *testing.T) {
 		)
 	}()
 
-	// Restart recovery sends the delivery and lets it go.
+	// The recovery routine's run at start sends the delivery and lets
+	// it go.
 	iWaitForDelivered(t, s.WebhookDB, d.ID)
 	require.Eventually(
 		t,
@@ -285,7 +289,7 @@ func TestNotifyAfterRecoveryDoesNotSendAgain(t *testing.T) {
 
 	body := event.Body
 
-	s.Engine.Notify([]delivery.Task{{
+	s.Engine.ExportNotify([]delivery.Task{{
 		DeliveryID:   d.ID,
 		EventID:      event.ID,
 		WebhookID:    s.WebhookID,
@@ -296,7 +300,7 @@ func TestNotifyAfterRecoveryDoesNotSendAgain(t *testing.T) {
 		EntrypointID: event.EntrypointID,
 	}})
 
-	// Notify took the delivery, and a worker releases it once it has
+	// notify took the delivery, and a worker releases it once it has
 	// run the task.
 	require.Eventually(
 		t,
@@ -334,7 +338,7 @@ func TestRetryingRecoverySkipsASuccessfulResult(t *testing.T) {
 	rSeedResult(t, s.WebhookDB, d.ID, 2, true)
 
 	s.Engine.ExportRecoverRetryingDeliveries(
-		s.WebhookDB, s.WebhookID,
+		context.Background(), s.WebhookDB, s.WebhookID,
 	)
 
 	assert.Empty(
@@ -349,8 +353,8 @@ func TestRetryingRecoverySkipsASuccessfulResult(t *testing.T) {
 	)
 }
 
-// TestRetryingSweepSkipsASuccessfulResult is the same rule on the
+// TestRetryingSweepSkipsASuccessfulResult is the same rule on a tick of
-// periodic sweep's retrying arm.
+// the sweep.
 func TestRetryingSweepSkipsASuccessfulResult(t *testing.T) {
 	t.Parallel()
 
@@ -368,8 +372,8 @@ func TestRetryingSweepSkipsASuccessfulResult(t *testing.T) {
 	rSeedResult(t, s.WebhookDB, d.ID, 1, false)
 	rSeedResult(t, s.WebhookDB, d.ID, 2, true)
 
-	s.Engine.ExportSweepWebhookRetries(
+	s.Engine.ExportRecoverWebhookDeliveries(
-		context.Background(), s.WebhookID,
+		context.Background(), s.WebhookID, onTick,
 	)
 
 	assert.Empty(t, fDrain(s.Engine))
@@ -420,8 +424,8 @@ func TestScheduledRetryIsNotSweptDuringBackoff(t *testing.T) {
 
 	require.Equal(t, 1, s.Engine.ExportInflightHeld())
 
-	s.Engine.ExportSweepWebhookRetries(
+	s.Engine.ExportRecoverWebhookDeliveries(
-		context.Background(), s.WebhookID,
+		context.Background(), s.WebhookID, onTick,
 	)
 
 	assert.Empty(
@@ -453,7 +457,7 @@ func TestRedispatchStampsTheRow(t *testing.T) {
 
 	ctx := context.Background()
 
-	s.Engine.ExportSweepWebhookRetries(ctx, s.WebhookID)
+	s.Engine.ExportRecoverWebhookDeliveries(ctx, s.WebhookID, onTick)
 	require.Len(t, fDrain(s.Engine), 1)
 
 	var row database.Delivery

internal/delivery/metrics_test.go

@@ -192,7 +192,7 @@ func mDeliverOK(t *testing.T, s iSetup) {
 	body := event.Body
 	task := iTask(
 		d, event, s.WebhookID, targetID,
-		"metrics-ok", iHTTPConfig(ts.URL), 3, 1, &body,
+		"metrics-ok", ts.URL, 3, 1, &body,
 	)
 
 	s.Engine.ExportProcessNewTask(context.TODO(), &task)
@@ -226,18 +226,17 @@ func mExhaustRetries(t *testing.T, s iSetup) {
 	)
 
 	body := event.Body
-	cfg := iHTTPConfig(ts.URL)
 
 	// The retry below is only run if its target still exists; see
 	// https://git.eeqj.de/sneak/webhooker/issues/107.
 	iCreateTarget(
 		t, s.MainDB, targetID, s.WebhookID, "metrics-fail",
-		database.TargetTypeHTTP, cfg, 2,
+		database.TargetTypeHTTP, ts.URL, 2,
 	)
 
 	first := iTask(
 		d, event, s.WebhookID, targetID,
-		"metrics-fail", cfg, 2, 1, &body,
+		"metrics-fail", ts.URL, 2, 1, &body,
 	)
 
 	s.Engine.ExportProcessNewTask(context.TODO(), &first)
@@ -251,7 +250,7 @@ func mExhaustRetries(t *testing.T, s iSetup) {
 	// deterministic and off the wall clock.
 	second := iTask(
 		d, event, s.WebhookID, targetID,
-		"metrics-fail", cfg, 2, 2, &body,
+		"metrics-fail", ts.URL, 2, 2, &body,
 	)
 
 	s.Engine.ExportProcessRetryTask(
@@ -289,7 +288,6 @@ func TestDeliveryMetrics_CircuitBreakerGauge(t *testing.T) {
 	)
 
 	body := event.Body
-	cfg := iHTTPConfig(ts.URL)
 
 	// An attempt budget above the failure threshold, so the breaker
 	// rather than the budget is what stops the delivery.
@@ -299,12 +297,12 @@ func TestDeliveryMetrics_CircuitBreakerGauge(t *testing.T) {
 	// see https://git.eeqj.de/sneak/webhooker/issues/107.
 	iCreateTarget(
 		t, s.MainDB, targetID, s.WebhookID, "metrics-trip",
-		database.TargetTypeHTTP, cfg, maxAttempts,
+		database.TargetTypeHTTP, ts.URL, maxAttempts,
 	)
 
 	first := iTask(
 		d, event, s.WebhookID, targetID,
-		"metrics-trip", cfg, maxAttempts, 1, &body,
+		"metrics-trip", ts.URL, maxAttempts, 1, &body,
 	)
 
 	s.Engine.ExportProcessNewTask(context.TODO(), &first)
@@ -316,7 +314,7 @@ func TestDeliveryMetrics_CircuitBreakerGauge(t *testing.T) {
 		ExportDefaultFailureThreshold; attempt++ {
 		task := iTask(
 			d, event, s.WebhookID, targetID,
-			"metrics-trip", cfg, maxAttempts, attempt, &body,
+			"metrics-trip", ts.URL, maxAttempts, attempt, &body,
 		)
 
 		s.Engine.ExportProcessRetryTask(
@@ -363,17 +361,16 @@ func TestDeliveryMetrics_BreakerBlockedIsNotAnAttempt(
 	)
 
 	body := event.Body
-	cfg := iHTTPConfig(ts.URL)
 	maxAttempts := delivery.ExportDefaultFailureThreshold + 5
 
 	iCreateTarget(
 		t, s.MainDB, targetID, s.WebhookID, "metrics-blocked",
-		database.TargetTypeHTTP, cfg, maxAttempts,
+		database.TargetTypeHTTP, ts.URL, maxAttempts,
 	)
 
 	first := iTask(
 		d, event, s.WebhookID, targetID,
-		"metrics-blocked", cfg, maxAttempts, 1, &body,
+		"metrics-blocked", ts.URL, maxAttempts, 1, &body,
 	)
 
 	s.Engine.ExportProcessNewTask(context.TODO(), &first)
@@ -382,7 +379,7 @@ func TestDeliveryMetrics_BreakerBlockedIsNotAnAttempt(
 		ExportDefaultFailureThreshold; attempt++ {
 		task := iTask(
 			d, event, s.WebhookID, targetID,
-			"metrics-blocked", cfg, maxAttempts, attempt, &body,
+			"metrics-blocked", ts.URL, maxAttempts, attempt, &body,
 		)
 
 		s.Engine.ExportProcessRetryTask(context.TODO(), &task)
@@ -405,7 +402,7 @@ func TestDeliveryMetrics_BreakerBlockedIsNotAnAttempt(
 
 	blocked := iTask(
 		d, event, s.WebhookID, targetID,
-		"metrics-blocked", cfg, maxAttempts,
+		"metrics-blocked", ts.URL, maxAttempts,
 		delivery.ExportDefaultFailureThreshold+1, &body,
 	)
 
@@ -444,8 +441,8 @@ func TestDeliveryMetrics_OrphanedRetryFailureLabelled(
 		t, s, database.TargetTypeLog,
 	)
 
-	s.Engine.ExportSweepWebhookRetries(
+	s.Engine.ExportRecoverWebhookDeliveries(
-		context.Background(), s.WebhookID,
+		context.Background(), s.WebhookID, onTick,
 	)
 
 	iAssertStatus(t, s.WebhookDB, deliveryID,
@@ -474,7 +471,7 @@ func TestDeliveryMetrics_QueueDepthGauges(t *testing.T) {
 
 	iCreateTarget(t, s.MainDB, targetID, s.WebhookID,
 		"queue-depth-target", database.TargetTypeHTTP,
-		iHTTPConfig("https://example.com/hook"), 3,
+		"https://example.com/hook", 3,
 	)
 
 	event := iSeedEvent(

internal/delivery/queue_depth.go

@@ -20,7 +20,8 @@ const queueDepthSampleInterval = 30 * time.Second
 // to be seeded correctly at startup from rows written by a previous
 // process, and would drift permanently on any transition that failed
 // to persist. Counting is the measurement that cannot go wrong, and
-// it is the same whole-database walk the retry sweep already makes.
+// it is the same whole-database walk each tick of the sweep already
+// makes.
 func (e *Engine) queueDepthSampler(ctx context.Context) {
 	defer e.wg.Done()
 

internal/delivery/queue_depth_gormlog_test.go

@@ -102,7 +102,7 @@ func TestQueueDepthSample_LogsNoBoundValue(t *testing.T) {
 
 	iCreateTarget(t, mainDB.DB(), targetID, webhookID,
 		"queue-depth-gormlog-target", database.TargetTypeHTTP,
-		iHTTPConfig("https://example.com/hook"), 3,
+		"https://example.com/hook", 3,
 	)
 
 	event := iSeedEvent(

internal/delivery/recovery_durability_test.go

@@ -88,7 +88,7 @@ func TestRecoverySkipsPendingWithSuccessfulResult(
 	)
 
 	s.Engine.ExportRecoverPendingDeliveries(
-		context.Background(), s.WebhookDB, s.WebhookID,
+		context.Background(), s.WebhookDB, s.WebhookID, atStart,
 	)
 
 	select {
@@ -145,7 +145,7 @@ func TestRecoveryContinuesTheAttemptNumbering(t *testing.T) {
 	rSeedResult(t, s.WebhookDB, d.ID, 2, false)
 
 	s.Engine.ExportRecoverPendingDeliveries(
-		context.Background(), s.WebhookDB, s.WebhookID,
+		context.Background(), s.WebhookDB, s.WebhookID, atStart,
 	)
 
 	select {
@@ -183,8 +183,8 @@ func TestSweepRecoversStrandedPending(t *testing.T) {
 		database.DeliveryStatusPending,
 	)
 
-	s.Engine.ExportSweepWebhookRetries(
+	s.Engine.ExportRecoverWebhookDeliveries(
-		context.Background(), s.WebhookID,
+		context.Background(), s.WebhookID, onTick,
 	)
 
 	select {
@@ -230,7 +230,7 @@ func TestSweepClaimsAStrandedDeliveryOnlyOnce(t *testing.T) {
 
 	ctx := context.Background()
 
-	s.Engine.ExportSweepWebhookRetries(ctx, s.WebhookID)
+	s.Engine.ExportRecoverWebhookDeliveries(ctx, s.WebhookID, onTick)
 
 	select {
 	case task := <-s.Engine.ExportDeliveryCh():
@@ -246,7 +246,7 @@ func TestSweepClaimsAStrandedDeliveryOnlyOnce(t *testing.T) {
 		database.DeliveryStatusPending,
 	)
 
-	s.Engine.ExportSweepWebhookRetries(ctx, s.WebhookID)
+	s.Engine.ExportRecoverWebhookDeliveries(ctx, s.WebhookID, onTick)
 
 	select {
 	case task := <-s.Engine.ExportDeliveryCh():
@@ -258,9 +258,9 @@ func TestSweepClaimsAStrandedDeliveryOnlyOnce(t *testing.T) {
 	}
 }
 
-// TestSweepSettlesStrandedPendingWithoutResending is the sweep's own
+// TestSweepSettlesStrandedPendingWithoutResending is the reconcile on a
-// version of the reconcile: a stranded delivery holding a successful
+// tick of the sweep: a stranded delivery holding a successful result is
-// result is settled where it stands, and the receiver hears nothing.
+// settled where it stands, and the receiver hears nothing.
 func TestSweepSettlesStrandedPendingWithoutResending(
 	t *testing.T,
 ) {
@@ -280,8 +280,8 @@ func TestSweepSettlesStrandedPendingWithoutResending(
 	rSeedResult(t, s.WebhookDB, d.ID, 1, true)
 	rAgePending(t, s.WebhookDB, d.ID)
 
-	s.Engine.ExportSweepWebhookRetries(
+	s.Engine.ExportRecoverWebhookDeliveries(
-		context.Background(), s.WebhookID,
+		context.Background(), s.WebhookID, onTick,
 	)
 
 	select {
@@ -312,8 +312,9 @@ func TestSweepSettlesStrandedPendingWithoutResending(
 
 // TestFailedResultWriteLeavesDeliveryRecoverable is the rule the
 // targets now follow: a bookkeeping write that fails must not advance
-// the status, because pending and retrying are the states the sweeps
+// the status, because pending and retrying are the states the recovery
-// recover and delivered is a claim the database refused to record.
+// routine recovers and delivered is a claim the database refused to
+// record.
 func TestFailedResultWriteLeavesDeliveryRecoverable(
 	t *testing.T,
 ) {
@@ -356,7 +357,7 @@ func TestFailedResultWriteLeavesDeliveryRecoverable(
 		Target: database.Target{
 			Name:        "unwritable",
 			Type:        database.TargetTypeHTTP,
-			Config:      iHTTPConfig(ts.URL),
+			URL:         ts.URL,
 			MaxAttempts: 1,
 		},
 	}
@@ -447,7 +448,7 @@ func TestFailedResultWriteWithRetriesLeavesDeliveryRecoverable(
 				Target: database.Target{
 					Name:        "unwritable",
 					Type:        database.TargetTypeHTTP,
-					Config:      iHTTPConfig(ts.URL),
+					URL:         ts.URL,
 					MaxAttempts: 3,
 				},
 			}

internal/delivery/recovery_test.go

@@ -0,0 +1,389 @@
+package delivery_test
+
+import (
+	"context"
+	"log/slog"
+	"net/http"
+	"testing"
+	"time"
+
+	"github.com/google/uuid"
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+	"sneak.berlin/go/webhooker/internal/database"
+	"sneak.berlin/go/webhooker/internal/database/databasetest"
+	"sneak.berlin/go/webhooker/internal/delivery"
+)
+
+// These tests cover the recovery routine, which the engine runs once
+// when it starts and then on every tick of the sweep
+// (https://git.eeqj.de/sneak/webhooker/issues/542). Every case runs it
+// both ways, each on a webhook of its own.
+
+// atStart and onTick are the two values of the recovery routine's
+// atStart parameter: its run when the engine starts, and a tick of the
+// sweep.
+const (
+	atStart = true
+	onTick  = false
+)
+
+// recoveryRun names one of the two runs of the recovery routine.
+type recoveryRun struct {
+	name    string
+	atStart bool
+}
+
+// recoveryRuns returns the routine's run at start and a tick.
+func recoveryRuns() []recoveryRun {
+	return []recoveryRun{
+		{"at start", atStart},
+		{"on a tick", onTick},
+	}
+}
+
+// recoverySetup gives a fresh webhook its main-database row and an http
+// target with retries, and returns the setup and the target's ID. No
+// worker runs, so whatever the routine queues stays in the channels for
+// the test to read, and nothing is sent to the target.
+func recoverySetup(t *testing.T) (iSetup, string) {
+	t.Helper()
+
+	s := newISetup(t)
+	targetID := uuid.New().String()
+
+	iCreateWebhook(t, s.MainDB, s.WebhookID, "recovery")
+	iCreateTarget(
+		t, s.MainDB, targetID, s.WebhookID, "recovery",
+		database.TargetTypeHTTP,
+		"http://example.com/hook", 20,
+	)
+
+	return s, targetID
+}
+
+// seedRecoveryDelivery seeds a delivery at status with the given
+// recorded attempts, failed but for the last when lastSucceeded is set,
+// all recorded now.
+func seedRecoveryDelivery(
+	t *testing.T,
+	s iSetup,
+	targetID string,
+	status database.DeliveryStatus,
+	attempts int,
+	lastSucceeded bool,
+) string {
+	t.Helper()
+
+	event := iSeedEvent(t, s.WebhookDB, s.WebhookID, `{"recovery":true}`)
+	d := iSeedDelivery(t, s.WebhookDB, event.ID, targetID, status)
+
+	for n := 1; n <= attempts; n++ {
+		rSeedResult(
+			t, s.WebhookDB, d.ID, n, lastSucceeded && n == attempts,
+		)
+	}
+
+	return d.ID
+}
+
+// backdateAttempts moves every recorded attempt of a delivery an hour
+// into the past, long past the backoff after its first attempt.
+func backdateAttempts(t *testing.T, s iSetup, deliveryID string) {
+	t.Helper()
+
+	require.NoError(t, s.WebhookDB.Model(&database.DeliveryResult{}).
+		Where("delivery_id = ?", deliveryID).
+		UpdateColumn("created_at", s.WebhookDB.NowFunc().Add(-time.Hour)).
+		Error)
+}
+
+// requireQueued waits for a task on ch. A retrying delivery reaches the
+// retry channel through a timer, even one due now, so it is waited for.
+func requireQueued(
+	t *testing.T, ch <-chan delivery.Task,
+) delivery.Task {
+	t.Helper()
+
+	select {
+	case task := <-ch:
+		return task
+	case <-time.After(5 * time.Second):
+		t.Fatal("the recovery routine queued nothing")
+
+		return delivery.Task{}
+	}
+}
+
+// assertNothingQueued asserts the engine queues nothing, giving a retry
+// timer that is due now the moment it needs to fire.
+func assertNothingQueued(t *testing.T, e *delivery.Engine) {
+	t.Helper()
+
+	select {
+	case task := <-e.ExportDeliveryCh():
+		t.Errorf("queued pending delivery %s", task.DeliveryID)
+	case task := <-e.ExportRetryCh():
+		t.Errorf("queued retrying delivery %s", task.DeliveryID)
+	case <-time.After(200 * time.Millisecond):
+	}
+}
+
+// TestRecovery_RetryingBackoffPassed: a retrying delivery whose backoff
+// is over is queued for its next attempt at once.
+func TestRecovery_RetryingBackoffPassed(t *testing.T) {
+	t.Parallel()
+
+	for _, run := range recoveryRuns() {
+		t.Run(run.name, func(t *testing.T) {
+			t.Parallel()
+
+			s, targetID := recoverySetup(t)
+			id := seedRecoveryDelivery(
+				t, s, targetID, database.DeliveryStatusRetrying, 1, false,
+			)
+			backdateAttempts(t, s, id)
+
+			s.Engine.ExportRecoverDeliveries(context.Background(), run.atStart)
+
+			task := requireQueued(t, s.Engine.ExportRetryCh())
+			assert.Equal(t, id, task.DeliveryID)
+			assert.Equal(t, 2, task.AttemptNum)
+			iAssertStatus(t, s.WebhookDB, id, database.DeliveryStatusRetrying)
+		})
+	}
+}
+
+// TestRecovery_RetryingBackoffNotPassed: a retrying delivery whose last
+// attempt was just now waits out the rest of its backoff, ten attempts
+// in, eight and a half minutes. It is not sent now, and the engine holds
+// it, so a later tick leaves it to the timer.
+func TestRecovery_RetryingBackoffNotPassed(t *testing.T) {
+	t.Parallel()
+
+	for _, run := range recoveryRuns() {
+		t.Run(run.name, func(t *testing.T) {
+			t.Parallel()
+
+			s, targetID := recoverySetup(t)
+			id := seedRecoveryDelivery(
+				t, s, targetID, database.DeliveryStatusRetrying, 10, false,
+			)
+
+			s.Engine.ExportRecoverDeliveries(context.Background(), run.atStart)
+
+			assertNothingQueued(t, s.Engine)
+			iAssertStatus(t, s.WebhookDB, id, database.DeliveryStatusRetrying)
+			assert.Equal(t, 1, s.Engine.ExportInflightHeld(),
+				"no retry timer holds the delivery",
+			)
+		})
+	}
+}
+
+// TestRecovery_PendingOlderThanTheAgeBound: a pending delivery untouched
+// for longer than the sweep's age bound is sent by either run.
+func TestRecovery_PendingOlderThanTheAgeBound(t *testing.T) {
+	t.Parallel()
+
+	for _, run := range recoveryRuns() {
+		t.Run(run.name, func(t *testing.T) {
+			t.Parallel()
+
+			s, targetID := recoverySetup(t)
+			id := seedRecoveryDelivery(
+				t, s, targetID, database.DeliveryStatusPending, 0, false,
+			)
+			rAgePending(t, s.WebhookDB, id)
+
+			s.Engine.ExportRecoverDeliveries(context.Background(), run.atStart)
+
+			task := requireQueued(t, s.Engine.ExportDeliveryCh())
+			assert.Equal(t, id, task.DeliveryID)
+			assert.Equal(t, 1, task.AttemptNum)
+		})
+	}
+}
+
+// TestRecovery_TaskCarriesEveryTargetSetting: the task the recovery
+// routine queues carries every one of the target's settings, all six
+// set here.
+// They are copied into the task one field at a time, and a field left
+// out is sent empty without any error.
+func TestRecovery_TaskCarriesEveryTargetSetting(t *testing.T) {
+	t.Parallel()
+
+	for _, run := range recoveryRuns() {
+		t.Run(run.name, func(t *testing.T) {
+			t.Parallel()
+
+			s := newISetup(t)
+			iCreateWebhook(t, s.MainDB, s.WebhookID, "recovery")
+
+			target := database.Target{
+				WebhookID:       s.WebhookID,
+				Name:            "recovery",
+				Type:            database.TargetTypeHTTP,
+				Active:          true,
+				URL:             "http://example.com/hook",
+				Headers:         map[string]string{headerAuthorization: "Bearer t"},
+				TimeoutSeconds:  7,
+				ForwardQuery:    true,
+				ArchiveExpiry:   time.Hour,
+				ArchiveRotation: "daily",
+				MaxAttempts:     1,
+			}
+			require.NoError(t, s.MainDB.Create(&target).Error)
+
+			id := seedRecoveryDelivery(
+				t, s, target.ID, database.DeliveryStatusPending, 0, false,
+			)
+			rAgePending(t, s.WebhookDB, id)
+
+			s.Engine.ExportRecoverDeliveries(context.Background(), run.atStart)
+
+			task := requireQueued(t, s.Engine.ExportDeliveryCh())
+			assert.Equal(t, target.ID, task.TargetID)
+			assert.Equal(t, target.URL, task.TargetURL)
+			assert.Equal(t, target.Headers, task.TargetHeaders)
+			assert.Equal(t, target.TimeoutSeconds, task.TimeoutSeconds)
+			assert.Equal(t, target.ForwardQuery, task.ForwardQuery)
+			assert.Equal(t, target.ArchiveExpiry, task.ArchiveExpiry)
+			assert.Equal(t, target.ArchiveRotation, task.ArchiveRotation)
+		})
+	}
+}
+
+// TestRecovery_PendingYoungerThanTheAgeBound: a pending delivery touched
+// a moment ago, as one a stop cut off is, is sent at start, which is how
+// it reaches its target on the next start
+// (https://git.eeqj.de/sneak/webhooker/issues/527). A tick leaves it.
+func TestRecovery_PendingYoungerThanTheAgeBound(t *testing.T) {
+	t.Parallel()
+
+	for _, run := range recoveryRuns() {
+		t.Run(run.name, func(t *testing.T) {
+			t.Parallel()
+
+			s, targetID := recoverySetup(t)
+			id := seedRecoveryDelivery(
+				t, s, targetID, database.DeliveryStatusPending, 0, false,
+			)
+
+			s.Engine.ExportRecoverDeliveries(context.Background(), run.atStart)
+
+			if run.atStart {
+				task := requireQueued(t, s.Engine.ExportDeliveryCh())
+				assert.Equal(t, id, task.DeliveryID)
+
+				return
+			}
+
+			assertNothingQueued(t, s.Engine)
+			iAssertStatus(t, s.WebhookDB, id, database.DeliveryStatusPending)
+			assert.Zero(t, s.Engine.ExportInflightHeld())
+		})
+	}
+}
+
+// TestRecovery_AlreadySucceeded: a pending or retrying delivery whose
+// success is recorded but whose status write was lost is marked
+// delivered where it stands, and not sent again.
+func TestRecovery_AlreadySucceeded(t *testing.T) {
+	t.Parallel()
+
+	for _, run := range recoveryRuns() {
+		t.Run(run.name, func(t *testing.T) {
+			t.Parallel()
+
+			s, targetID := recoverySetup(t)
+			pending := seedRecoveryDelivery(
+				t, s, targetID, database.DeliveryStatusPending, 1, true,
+			)
+			rAgePending(t, s.WebhookDB, pending)
+
+			retrying := seedRecoveryDelivery(
+				t, s, targetID, database.DeliveryStatusRetrying, 2, true,
+			)
+			backdateAttempts(t, s, retrying)
+
+			s.Engine.ExportRecoverDeliveries(context.Background(), run.atStart)
+
+			assertNothingQueued(t, s.Engine)
+
+			for id, attempts := range map[string]int{pending: 1, retrying: 2} {
+				iAssertStatus(
+					t, s.WebhookDB, id, database.DeliveryStatusDelivered,
+				)
+				assert.Len(t, iResults(t, s.WebhookDB, id), attempts,
+					"marking the delivery delivered recorded an attempt",
+				)
+			}
+		})
+	}
+}
+
+// TestRecovery_MissingDatabase: a tick leaves a webhook whose database
+// file is missing alone, and the run at start opens it, which creates an
+// empty one and reports the loss (see
+// TestRecoverDeliveries_ReportsAMissingWebhookDatabase).
+func TestRecovery_MissingDatabase(t *testing.T) {
+	t.Parallel()
+
+	mainDB := iMainDB(t)
+	webhookID := uuid.New().String()
+	iCreateWebhook(t, mainDB.DB(), webhookID, "missing-database")
+
+	dbMgr := databasetest.NewWebhookDBManager(t, t.TempDir())
+	t.Cleanup(func() { _ = dbMgr.CloseAll() })
+
+	engine := delivery.NewTestEngineWithDB(
+		mainDB, dbMgr,
+		slog.New(slog.DiscardHandler),
+		&http.Client{Timeout: 5 * time.Second}, 1,
+	)
+
+	engine.ExportRecoverDeliveries(context.Background(), onTick)
+	assert.False(t, dbMgr.DBExists(webhookID),
+		"a tick created the missing database",
+	)
+
+	engine.ExportRecoverDeliveries(context.Background(), atStart)
+	assert.True(t, dbMgr.DBExists(webhookID),
+		"the run at start did not open the missing database",
+	)
+}
+
+// TestRecovery_LeavesADeliveryTheEngineHolds: a delivery the engine is
+// working on, has queued, or holds a retry timer for is left alone by
+// either run, pending and retrying alike, however old.
+func TestRecovery_LeavesADeliveryTheEngineHolds(t *testing.T) {
+	t.Parallel()
+
+	for _, run := range recoveryRuns() {
+		t.Run(run.name, func(t *testing.T) {
+			t.Parallel()
+
+			s, targetID := recoverySetup(t)
+			pending := seedRecoveryDelivery(
+				t, s, targetID, database.DeliveryStatusPending, 0, false,
+			)
+			rAgePending(t, s.WebhookDB, pending)
+
+			retrying := seedRecoveryDelivery(
+				t, s, targetID, database.DeliveryStatusRetrying, 1, false,
+			)
+			backdateAttempts(t, s, retrying)
+
+			require.True(t, s.Engine.ExportRetainDelivery(pending))
+			require.True(t, s.Engine.ExportRetainDelivery(retrying))
+
+			s.Engine.ExportRecoverDeliveries(context.Background(), run.atStart)
+
+			assertNothingQueued(t, s.Engine)
+			iAssertStatus(t, s.WebhookDB, pending, database.DeliveryStatusPending)
+			iAssertStatus(t, s.WebhookDB, retrying, database.DeliveryStatusRetrying)
+			assert.Equal(t, 2, s.Engine.ExportInflightHeld())
+		})
+	}
+}

internal/delivery/redirect_test.go

@@ -85,19 +85,14 @@ func deliverWithProbeHeaders(
 		database.DeliveryStatusPending,
 	)
 
-	cfg, err := json.Marshal(delivery.HTTPTargetConfig{
-		URL: targetURL,
-		Headers: map[string]string{
-			probeHeaderName: probeHeaderValue,
-		},
-	})
-	require.NoError(t, err)
-
 	body := event.Body
 	task := iTask(
 		d, event, s.WebhookID, targetID,
-		"redirect-target", string(cfg), 1, 1, &body,
+		"redirect-target", targetURL, 1, 1, &body,
 	)
+	task.TargetHeaders = map[string]string{
+		probeHeaderName: probeHeaderValue,
+	}
 
 	s.Engine.ExportProcessNewTask(context.TODO(), &task)
 
@@ -309,8 +304,7 @@ func TestRedirectPolicy_StopsAtHopCap(t *testing.T) {
 	)
 
 	client := engine.ExportClientForRequest(
-		&delivery.HTTPTargetConfig{URL: srv.URL},
+		0, []string{probeHeaderName},
-		[]string{probeHeaderName},
 	)
 	require.NotNil(t, client.CheckRedirect)
 
@@ -350,7 +344,7 @@ func TestApplyRequestHeaders_ReportsOriginScopedNames(t *testing.T) {
 	inbound, err := json.Marshal(map[string][]string{
 		inboundHeaderName: {inboundHeaderValue},
 		"Content-Type":    {testContentType},
-		"User-Agent":      {"curl/8.7.1"},
+		headerUserAgent:   {"curl/8.7.1"},
 		"Host":            {"inbound.example.com"},
 	})
 	require.NoError(t, err)
@@ -369,11 +363,9 @@ func TestApplyRequestHeaders_ReportsOriginScopedNames(t *testing.T) {
 			Headers:     string(inbound),
 			ContentType: testContentType,
 		},
-		&delivery.HTTPTargetConfig{
+		map[string]string{
-			Headers: map[string]string{
+			probeHeaderName: probeHeaderValue,
-				probeHeaderName: probeHeaderValue,
+			"Content-Type":  testContentType,
-				"Content-Type":  testContentType,
-			},
 		},
 		"webhooker/dev",
 	)

internal/delivery/store.go

@@ -0,0 +1,164 @@
+package delivery
+
+import (
+	"fmt"
+
+	"gorm.io/gorm"
+	"sneak.berlin/go/webhooker/internal/database"
+)
+
+// StoreEvent stores event with one pending delivery for each of its
+// webhook's active targets, and adds them to the totals, in one
+// transaction, then queues the deliveries. It returns how many
+// deliveries it created.
+//
+// The receiver stores every event it accepts through here, and a
+// resubmit stores its copy of a stored event, so every event is
+// stored, retried, SSRF-guarded and circuit-broken the same way however
+// it entered the system. CreateReplay is the only other place a
+// delivery is created.
+//
+// The targets are the webhook's active ones as they stand now: a
+// target created after a resubmitted event first arrived is included,
+// and an inactive one is skipped. An event with no active target is
+// stored with no deliveries.
+func (e *Engine) StoreEvent(event *database.Event) (int, error) {
+	var targets []database.Target
+
+	err := e.database.DB().Where(
+		"webhook_id = ? AND active = ?", event.WebhookID, true,
+	).Find(&targets).Error
+	if err != nil {
+		return 0, fmt.Errorf("loading active targets: %w", err)
+	}
+
+	webhookDB, err := e.dbManager.GetDB(event.WebhookID)
+	if err != nil {
+		return 0, fmt.Errorf("getting webhook database: %w", err)
+	}
+
+	event.BodyBytes = int64(len(event.Body))
+	tasks := make([]Task, 0, len(targets))
+
+	err = webhookDB.Transaction(func(tx *gorm.DB) error {
+		err := tx.Create(event).Error
+		if err != nil {
+			return fmt.Errorf("creating event: %w", err)
+		}
+
+		for i := range targets {
+			dlv, err := createDelivery(tx, event.ID, targets[i].ID, false)
+			if err != nil {
+				return err
+			}
+
+			tasks = append(tasks, buildTask(
+				dlv, event.WebhookID, event, &targets[i], 1,
+			))
+		}
+
+		err = database.AddEventTotals(tx, database.EventTotals{
+			Events: 1, LastEventAt: &event.CreatedAt,
+		})
+		if err != nil {
+			return err
+		}
+
+		// A resubmitted copy did not arrive on its entrypoint's URL, so
+		// it leaves the entrypoint's last event as it is.
+		if event.ResubmittedFromID != nil {
+			return nil
+		}
+
+		return database.AddEntrypointTotals(tx, database.EntrypointTotals{
+			EntrypointID: event.EntrypointID, LastEventAt: event.CreatedAt,
+		})
+	})
+	if err != nil {
+		return 0, err
+	}
+
+	// Counted here, after the commit: an event exists once it is
+	// durably stored, which is what the delivery counters are compared
+	// against on a dashboard. A resubmitted event counts too, because
+	// it produces deliveries that the delivery side counts; the
+	// resubmit counter is what separates the two.
+	e.mtr.EventReceived()
+
+	e.notify(tasks)
+
+	return len(tasks), nil
+}
+
+// CreateReplay creates one more pending delivery of the stored event
+// eventID to target, marked as a replay, adds it to the target's totals
+// in the same transaction, and queues it. It returns the new
+// delivery's id.
+//
+// The caller passes the target as it stands now and has already
+// decided the replay may go ahead. The delivery being replayed is not
+// touched.
+func (e *Engine) CreateReplay(
+	webhookID, eventID string, target *database.Target,
+) (string, error) {
+	webhookDB, err := e.dbManager.GetDB(webhookID)
+	if err != nil {
+		return "", fmt.Errorf("getting webhook database: %w", err)
+	}
+
+	event, err := e.loadEvent(webhookDB, eventID)
+	if err != nil {
+		return "", err
+	}
+
+	var dlv *database.Delivery
+
+	err = webhookDB.Transaction(func(tx *gorm.DB) error {
+		var err error
+
+		dlv, err = createDelivery(tx, event.ID, target.ID, true)
+
+		return err
+	})
+	if err != nil {
+		return "", err
+	}
+
+	e.notify([]Task{buildTask(dlv, webhookID, &event, target, 1)})
+
+	return dlv.ID, nil
+}
+
+// createDelivery writes a pending delivery of the event to the target
+// on the caller's transaction, and adds it to the target's totals.
+//
+// Neither Event nor Target is set on the row, and the per-webhook
+// database omits associations on every write in any case (see
+// internal/database/event_db_isolation.go), so the target's settings
+// are never copied into the event database.
+func createDelivery(
+	tx *gorm.DB, eventID, targetID string, replay bool,
+) (*database.Delivery, error) {
+	dlv := &database.Delivery{
+		EventID:  eventID,
+		TargetID: targetID,
+		Status:   database.DeliveryStatusPending,
+		Replay:   replay,
+	}
+
+	err := tx.Create(dlv).Error
+	if err != nil {
+		return nil, fmt.Errorf(
+			"creating delivery for target %s: %w", targetID, err,
+		)
+	}
+
+	err = database.AddTargetTotals(tx, database.TargetTotals{
+		TargetID: targetID, Deliveries: 1,
+	})
+	if err != nil {
+		return nil, err
+	}
+
+	return dlv, nil
+}

internal/delivery/store_test.go

@@ -0,0 +1,386 @@
+package delivery_test
+
+import (
+	"net/http"
+	"strings"
+	"testing"
+	"time"
+
+	"github.com/google/uuid"
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+	"gorm.io/gorm"
+	"sneak.berlin/go/webhooker/internal/database"
+	"sneak.berlin/go/webhooker/internal/delivery"
+)
+
+// storeTestTarget creates an active http target of the setup's webhook
+// with every one of a target's settings set, so a task that drops one
+// of them differs from the target.
+func storeTestTarget(
+	t *testing.T, s iSetup, name string,
+) database.Target {
+	t.Helper()
+
+	target := database.Target{
+		WebhookID:       s.WebhookID,
+		Name:            name,
+		Type:            database.TargetTypeHTTP,
+		Active:          true,
+		URL:             "http://93.184.216.34/" + name,
+		Headers:         map[string]string{"X-Api-Key": "k"},
+		TimeoutSeconds:  7,
+		ForwardQuery:    true,
+		ArchiveExpiry:   time.Hour,
+		ArchiveRotation: rotationDaily,
+		MaxAttempts:     3,
+	}
+
+	require.NoError(t, s.MainDB.Create(&target).Error)
+
+	return target
+}
+
+// newStoreTestEvent returns an event of the setup's webhook as the
+// receiver builds one, not yet stored.
+func newStoreTestEvent(s iSetup, body string) *database.Event {
+	return &database.Event{
+		WebhookID:    s.WebhookID,
+		EntrypointID: uuid.New().String(),
+		Method:       http.MethodPost,
+		RawQuery:     "a=1&b=2",
+		Headers:      `{"X-Test":["yes"]}`,
+		ContentType:  testContentType,
+		Body:         body,
+	}
+}
+
+// queuedTasks takes every task the engine has queued so far. The
+// engine in these tests is never started, so nothing else takes them.
+func queuedTasks(e *delivery.Engine) []delivery.Task {
+	var tasks []delivery.Task
+
+	for {
+		select {
+		case task := <-e.ExportDeliveryCh():
+			tasks = append(tasks, task)
+		default:
+			return tasks
+		}
+	}
+}
+
+// assertTaskFor proves task carries delivery deliveryID of event to
+// target: every one of the target's settings and every event field.
+// They are copied into the task one field at a time, and a field left
+// out is sent empty without any error.
+func assertTaskFor(
+	t *testing.T,
+	task delivery.Task,
+	deliveryID string,
+	event *database.Event,
+	target *database.Target,
+) {
+	t.Helper()
+
+	assert.Equal(t, deliveryID, task.DeliveryID)
+	assert.Equal(t, event.ID, task.EventID)
+	assert.Equal(t, event.WebhookID, task.WebhookID)
+	assert.Equal(t, event.EntrypointID, task.EntrypointID)
+
+	assert.Equal(t, target.ID, task.TargetID)
+	assert.Equal(t, target.Name, task.TargetName)
+	assert.Equal(t, target.Type, task.TargetType)
+	assert.Equal(t, target.URL, task.TargetURL)
+	assert.Equal(t, target.Headers, task.TargetHeaders)
+	assert.Equal(t, target.TimeoutSeconds, task.TimeoutSeconds)
+	assert.Equal(t, target.ForwardQuery, task.ForwardQuery)
+	assert.Equal(t, target.ArchiveExpiry, task.ArchiveExpiry)
+	assert.Equal(t, target.ArchiveRotation, task.ArchiveRotation)
+	assert.Equal(t, target.MaxAttempts, task.MaxAttempts)
+
+	assert.Equal(t, event.Method, task.Method)
+	assert.Equal(t, event.RawQuery, task.RawQuery)
+	assert.Equal(t, event.Headers, task.Headers)
+	assert.Equal(t, event.ContentType, task.ContentType)
+	require.NotNil(t, task.Body)
+	assert.Equal(t, event.Body, *task.Body)
+
+	assert.Equal(t, 1, task.AttemptNum)
+}
+
+// storedDeliveries reads every delivery of an event.
+func storedDeliveries(
+	t *testing.T, db *gorm.DB, eventID string,
+) []database.Delivery {
+	t.Helper()
+
+	var deliveries []database.Delivery
+
+	require.NoError(t, db.Where("event_id = ?", eventID).
+		Find(&deliveries).Error)
+
+	return deliveries
+}
+
+// storedEventTotals reads the webhook's event totals.
+func storedEventTotals(t *testing.T, db *gorm.DB) database.EventTotals {
+	t.Helper()
+
+	var totals database.EventTotals
+
+	require.NoError(t, db.First(&totals).Error)
+
+	return totals
+}
+
+// countRows counts the rows of model in db.
+func countRows(t *testing.T, db *gorm.DB, model any) int64 {
+	t.Helper()
+
+	var n int64
+
+	require.NoError(t, db.Model(model).Count(&n).Error)
+
+	return n
+}
+
+// TestStoreEvent_StoresDeliveriesToActiveTargets proves StoreEvent
+// stores the event with one pending delivery to each active target and
+// none to an inactive one, adds them to the totals, and queues one task
+// per delivery.
+func TestStoreEvent_StoresDeliveriesToActiveTargets(t *testing.T) {
+	t.Parallel()
+
+	s := newISetup(t)
+	targets := []database.Target{
+		storeTestTarget(t, s, "first"),
+		storeTestTarget(t, s, "second"),
+	}
+	off := storeTestTarget(t, s, "off")
+
+	require.NoError(t, s.MainDB.Model(&database.Target{}).
+		Where("id = ?", off.ID).Update("active", false).Error)
+
+	event := newStoreTestEvent(s, `{"hello":"world"}`)
+
+	created, err := s.Engine.StoreEvent(event)
+	require.NoError(t, err)
+	assert.Equal(t, 2, created)
+
+	var stored database.Event
+
+	require.NoError(t, s.WebhookDB.First(&stored, "id = ?", event.ID).Error)
+	assert.Equal(t, event.Body, stored.Body)
+	assert.Equal(t, int64(len(event.Body)), stored.BodyBytes)
+
+	rows := storedDeliveries(t, s.WebhookDB, event.ID)
+	queued := queuedTasks(s.Engine)
+
+	require.Len(t, rows, 2)
+	require.Len(t, queued, 2)
+
+	deliveries := map[string]database.Delivery{}
+	for _, dlv := range rows {
+		deliveries[dlv.TargetID] = dlv
+	}
+
+	tasks := map[string]delivery.Task{}
+	for _, task := range queued {
+		tasks[task.TargetID] = task
+	}
+
+	for i := range targets {
+		dlv, ok := deliveries[targets[i].ID]
+		require.True(t, ok, "no delivery to %s", targets[i].Name)
+		assert.Equal(t, database.DeliveryStatusPending, dlv.Status)
+		assert.False(t, dlv.Replay)
+		assert.Equal(t, int64(1),
+			targetTotals(t, s.WebhookDB, targets[i].ID).Deliveries)
+
+		assertTaskFor(t, tasks[targets[i].ID], dlv.ID, event, &targets[i])
+	}
+
+	totals := storedEventTotals(t, s.WebhookDB)
+	assert.Equal(t, int64(1), totals.Events)
+	require.NotNil(t, totals.LastEventAt)
+	assert.True(t, totals.LastEventAt.Equal(stored.CreatedAt))
+
+	var entrypoint database.EntrypointTotals
+
+	require.NoError(t, s.WebhookDB.First(
+		&entrypoint, "entrypoint_id = ?", event.EntrypointID,
+	).Error)
+	assert.True(t, entrypoint.LastEventAt.Equal(stored.CreatedAt))
+}
+
+// TestStoreEvent_ResubmittedCopyLeavesTheEntrypoint proves a
+// resubmitted copy is counted among the webhook's events but leaves its
+// entrypoint's last event as it is: it did not arrive on that URL.
+func TestStoreEvent_ResubmittedCopyLeavesTheEntrypoint(t *testing.T) {
+	t.Parallel()
+
+	s := newISetup(t)
+	storeTestTarget(t, s, "only")
+
+	sourceID := uuid.New().String()
+	event := newStoreTestEvent(s, `{"copy":true}`)
+	event.ResubmittedFromID = &sourceID
+
+	created, err := s.Engine.StoreEvent(event)
+	require.NoError(t, err)
+	assert.Equal(t, 1, created)
+	assert.Len(t, queuedTasks(s.Engine), 1)
+
+	assert.Equal(t, int64(1), storedEventTotals(t, s.WebhookDB).Events)
+	assert.Zero(t, countRows(t, s.WebhookDB, &database.EntrypointTotals{}))
+}
+
+// TestStoreEvent_NoActiveTarget proves an event of a webhook with no
+// active target is stored with no delivery and nothing queued.
+func TestStoreEvent_NoActiveTarget(t *testing.T) {
+	t.Parallel()
+
+	s := newISetup(t)
+	event := newStoreTestEvent(s, `{"to":"nobody"}`)
+
+	created, err := s.Engine.StoreEvent(event)
+	require.NoError(t, err)
+	assert.Zero(t, created)
+
+	assert.Equal(t, int64(1), countRows(t, s.WebhookDB, &database.Event{}))
+	assert.Empty(t, storedDeliveries(t, s.WebhookDB, event.ID))
+	assert.Empty(t, queuedTasks(s.Engine))
+}
+
+// TestStoreEvent_LargeBodyIsNotCarried proves a body at the inline
+// limit is stored whole but left off the task, for the attempt to read
+// from the event row.
+func TestStoreEvent_LargeBodyIsNotCarried(t *testing.T) {
+	t.Parallel()
+
+	s := newISetup(t)
+	storeTestTarget(t, s, "only")
+
+	event := newStoreTestEvent(
+		s, strings.Repeat("x", delivery.MaxInlineBodySize),
+	)
+
+	_, err := s.Engine.StoreEvent(event)
+	require.NoError(t, err)
+
+	tasks := queuedTasks(s.Engine)
+	require.Len(t, tasks, 1)
+	assert.Nil(t, tasks[0].Body)
+
+	var stored database.Event
+
+	require.NoError(t, s.WebhookDB.First(&stored, "id = ?", event.ID).Error)
+	assert.Equal(t, event.Body, stored.Body)
+}
+
+// TestStoreEvent_RollsBackWhenAWriteFails proves the event, its
+// deliveries and its totals are one transaction: when the entrypoint
+// totals write fails, the last one, after the event, its delivery, the
+// target totals and the event totals were written, none of them is left
+// and nothing is queued.
+func TestStoreEvent_RollsBackWhenAWriteFails(t *testing.T) {
+	t.Parallel()
+
+	s := newISetup(t)
+	storeTestTarget(t, s, "only")
+
+	require.NoError(t,
+		s.WebhookDB.Migrator().DropTable(&database.EntrypointTotals{}))
+
+	_, err := s.Engine.StoreEvent(newStoreTestEvent(s, `{"lost":true}`))
+	require.Error(t, err)
+
+	assert.Zero(t, countRows(t, s.WebhookDB, &database.Event{}))
+	assert.Zero(t, countRows(t, s.WebhookDB, &database.Delivery{}))
+	assert.Zero(t, countRows(t, s.WebhookDB, &database.TargetTotals{}))
+
+	totals := storedEventTotals(t, s.WebhookDB)
+	assert.Zero(t, totals.Events)
+	assert.Nil(t, totals.LastEventAt)
+
+	assert.Empty(t, queuedTasks(s.Engine))
+	assert.Zero(t, s.Engine.ExportInflightHeld())
+}
+
+// TestCreateReplay_CreatesAndQueuesAReplay proves CreateReplay adds a
+// new pending delivery marked as a replay, counts it in the target's
+// totals, queues its task built from the target it was given and the
+// stored event, and leaves the delivery it repeats as it was. The
+// stored event has every event field set, so a task that drops one of
+// them differs from the event.
+func TestCreateReplay_CreatesAndQueuesAReplay(t *testing.T) {
+	t.Parallel()
+
+	s := newISetup(t)
+	target := storeTestTarget(t, s, "replayed")
+	event := newStoreTestEvent(s, `{"replay":"me"}`)
+	require.NoError(t, s.WebhookDB.Create(event).Error)
+
+	original := iSeedDelivery(
+		t, s.WebhookDB, event.ID, target.ID,
+		database.DeliveryStatusFailed,
+	)
+
+	deliveryID, err := s.Engine.CreateReplay(s.WebhookID, event.ID, &target)
+	require.NoError(t, err)
+
+	replay := storedDelivery(t, s.WebhookDB, deliveryID)
+	assert.Equal(t, event.ID, replay.EventID)
+	assert.Equal(t, target.ID, replay.TargetID)
+	assert.Equal(t, database.DeliveryStatusPending, replay.Status)
+	assert.True(t, replay.Replay)
+
+	assert.Equal(t, database.DeliveryStatusFailed,
+		storedDelivery(t, s.WebhookDB, original.ID).Status)
+	assert.Equal(t, int64(1),
+		targetTotals(t, s.WebhookDB, target.ID).Deliveries)
+
+	tasks := queuedTasks(s.Engine)
+	require.Len(t, tasks, 1)
+	assertTaskFor(t, tasks[0], deliveryID, event, &target)
+}
+
+// TestCreateReplay_RollsBackWhenAWriteFails proves the replay delivery
+// and its target totals are one transaction: when the totals write
+// fails, after the delivery was written, no new delivery is left and
+// nothing is queued.
+func TestCreateReplay_RollsBackWhenAWriteFails(t *testing.T) {
+	t.Parallel()
+
+	s := newISetup(t)
+	target := storeTestTarget(t, s, "replayed")
+	event := iSeedEvent(t, s.WebhookDB, s.WebhookID, `{"replay":"me"}`)
+	iSeedDelivery(
+		t, s.WebhookDB, event.ID, target.ID,
+		database.DeliveryStatusFailed,
+	)
+
+	require.NoError(t,
+		s.WebhookDB.Migrator().DropTable(&database.TargetTotals{}))
+
+	_, err := s.Engine.CreateReplay(s.WebhookID, event.ID, &target)
+	require.Error(t, err)
+
+	assert.Len(t, storedDeliveries(t, s.WebhookDB, event.ID), 1)
+	assert.Empty(t, queuedTasks(s.Engine))
+	assert.Zero(t, s.Engine.ExportInflightHeld())
+}
+
+// storedDelivery reads one delivery back.
+func storedDelivery(
+	t *testing.T, db *gorm.DB, deliveryID string,
+) database.Delivery {
+	t.Helper()
+
+	var dlv database.Delivery
+
+	require.NoError(t, db.First(&dlv, "id = ?", deliveryID).Error)
+
+	return dlv
+}

internal/delivery/target.go

@@ -13,8 +13,8 @@ import (
 // The engine provides one to each target so a target can own
 // its retries durably: it records the attempt, marks the
 // delivery retrying, and asks the Scheduler to deliver the
-// next attempt after delay — exactly what the engine does for
+// next attempt after delay — exactly what the engine's
-// its own restart recovery.
+// recovery routine does for a retrying delivery.
 type Scheduler interface {
 	ScheduleRetry(task Task, delay time.Duration)
 }
@@ -45,29 +45,20 @@ type Target interface {
 }
 
 // rescheduler is implemented by targets that own durable
-// retries. The engine's restart recovery and periodic sweep
+// retries. The engine's recovery routine uses it to let the
-// use it to let the target recompute the schedule for an
+// target recompute the schedule for an orphaned retrying
-// orphaned retrying delivery, keeping the retry schedule
+// delivery, keeping the retry schedule target-owned.
-// target-owned. Fire-and-forget targets do not implement it
+// Fire-and-forget targets do not implement it, and a retrying
-// and their (never-occurring) retrying deliveries are
+// delivery found for one is terminally failed.
-// skipped.
 type rescheduler interface {
 	// remainingBackoff returns how long to wait before the
-	// next attempt of a recovered retrying delivery.
+	// next attempt of a recovered retrying delivery: zero once
+	// its backoff has passed.
 	remainingBackoff(
 		webhookDB *gorm.DB,
 		deliveryID string,
 		attemptNum int,
 	) time.Duration
-
-	// backoffElapsed reports whether the backoff window for
-	// the last attempt has already passed, so the periodic
-	// sweep can re-enqueue the delivery now.
-	backoffElapsed(
-		webhookDB *gorm.DB,
-		deliveryID string,
-		attemptNum int,
-	) bool
 }
 
 // attemptResult is the outcome of a single delivery attempt,

internal/delivery/target_config_edit.go

@@ -1,137 +0,0 @@
-package delivery
-
-import (
-	"encoding/json"
-	"errors"
-	"fmt"
-
-	"sneak.berlin/go/webhooker/internal/archive"
-	"sneak.berlin/go/webhooker/internal/database"
-)
-
-// errUnknownTargetTypeForEdit is returned when a stored target has a
-// type the edit form has no field set for.
-var errUnknownTargetTypeForEdit = errors.New(
-	"unknown target type",
-)
-
-// TargetConfigForm is the UNMASKED projection of a target's stored
-// configuration, for pre-filling the target edit form.
-//
-// It is the deliberate exception to the rule TargetView enforces
-// everywhere else: TargetView exists so that no template can render
-// a target's stored blob, because a destination URL's path segments
-// and a header value are both routinely the credential. An operator
-// cannot correct a value they cannot see, so the edit form — and
-// only the edit form — is shown the full value.
-//
-// Everything that keeps that exception narrow lives at the call
-// site: the route is behind RequireAuth and the webhook's ownership
-// check, and its group sets NoCache so the rendered secret is not
-// written to a shared cache. Do not reach for this type from any
-// other page.
-type TargetConfigForm struct {
-	// URL is the destination for an HTTP target and the webhook
-	// URL for a Slack target.
-	URL string
-	// Headers is the HTTP target's configured headers in the
-	// textarea representation, one "Name: value" per line.
-	Headers string
-	// Timeout is the HTTP target's per-request timeout in seconds,
-	// empty when unset.
-	Timeout string
-	// ForwardQuery is the HTTP target's setting that passes each
-	// event's query string on to it.
-	ForwardQuery bool
-	// Expiry is the database (archive) target's row expiry.
-	Expiry string
-	// Rotation is the database (archive) target's rotation.
-	Rotation string
-}
-
-// NewTargetConfigForm parses a target's stored configuration into
-// the edit form's fields.
-//
-// A configuration that does not parse is an error rather than a
-// zero-valued form that silently looks like a target with no
-// settings. The caller shows the operator that the stored value
-// could not be read, so that saving the form is understood as
-// replacing it rather than preserving it.
-func NewTargetConfigForm(
-	t *database.Target,
-) (TargetConfigForm, error) {
-	switch t.Type {
-	case database.TargetTypeHTTP:
-		cfg, err := parseHTTPConfig(t.Config)
-		if err != nil {
-			return TargetConfigForm{}, err
-		}
-
-		return TargetConfigForm{
-			URL:          cfg.URL,
-			Headers:      FormatTargetHeaders(cfg.Headers),
-			Timeout:      FormatTargetTimeout(cfg.Timeout),
-			ForwardQuery: cfg.ForwardQuery,
-		}, nil
-	case database.TargetTypeSlack:
-		cfg, err := parseSlackConfig(t.Config)
-		if err != nil {
-			return TargetConfigForm{}, err
-		}
-
-		return TargetConfigForm{URL: cfg.WebhookURL}, nil
-	case database.TargetTypeDatabase:
-		return databaseConfigForm(t.Config)
-	case database.TargetTypeLog:
-		// The log target takes no configuration.
-		return TargetConfigForm{}, nil
-	default:
-		return TargetConfigForm{}, fmt.Errorf(
-			"%w: %q", errUnknownTargetTypeForEdit, t.Type,
-		)
-	}
-}
-
-// databaseConfigForm parses an archive target's optional expiry and
-// rotation. An absent, empty or never expiry yields an empty expiry,
-// on which the edit form starts at never; saving it unchanged stores
-// never, which means the same as an empty expiry. An absent rotation
-// is empty too, and the form starts at none. An expiry that is set
-// but not a valid duration, or a rotation that is not one of the
-// four, is an error, not a blank field.
-func databaseConfigForm(
-	configJSON string,
-) (TargetConfigForm, error) {
-	if configJSON == "" {
-		return TargetConfigForm{}, nil
-	}
-
-	var cfg archive.DatabaseTargetConfig
-
-	err := json.Unmarshal([]byte(configJSON), &cfg)
-	if err != nil {
-		return TargetConfigForm{}, fmt.Errorf(
-			"parsing config JSON: %w", err,
-		)
-	}
-
-	err = archive.ValidateRotation(cfg.Rotation)
-	if err != nil {
-		return TargetConfigForm{}, err
-	}
-
-	form := TargetConfigForm{Rotation: cfg.Rotation}
-
-	if cfg.Expiry == "" || cfg.Expiry == archive.ExpiryNever {
-		return form, nil
-	}
-
-	err = archive.ValidateExpiry(cfg.Expiry)
-	if err != nil {
-		return TargetConfigForm{}, err
-	}
-
-	form.Expiry = cfg.Expiry
-
-	return form, nil
-}

internal/delivery/target_config_view.go

@@ -9,16 +9,17 @@ import (
 	"sneak.berlin/go/webhooker/internal/database"
 )
 
-// configUnavailable is what a target's configuration renders
+// configUnavailable is what a target's settings render as when
-// as when it is absent, of an unknown type, or does not
+// the target is of an unknown type, and what its URL renders as
-// parse. The stored blob is never shown as a fallback: it can
+// when it does not parse into a scheme and host. The stored URL is
-// hold a credential (a Slack incoming webhook URL is a bearer
+// never shown as a fallback: it can be a credential (a Slack
-// token) and a UI that prints it leaks that credential into
+// incoming webhook URL is a bearer token) and a UI that prints it
-// browser history, screenshots and screen shares.
+// leaks that credential into browser history, screenshots and
+// screen shares.
 const configUnavailable = "(unavailable)"
 
 // ConfigField is one labelled, display-safe value derived
-// from a target's stored configuration.
+// from a target's settings.
 type ConfigField struct {
 	Label string
 	Value string
@@ -32,9 +33,9 @@ type ConfigField struct {
 const deletedNameSuffix = " (deleted)"
 
 // TargetView is the display-safe projection of a target for
-// the UI. It deliberately has no raw configuration field, so
+// the UI. It deliberately has no URL or header field, so no
-// no template — present or future — can render the stored
+// template — present or future — can render the stored
-// blob.
+// credential.
 type TargetView struct {
 	ID   string
 	Name string
@@ -61,8 +62,7 @@ func (v TargetView) DisplayName() string {
 }
 
 // NewTargetViews projects targets for rendering, replacing
-// each stored configuration blob with named, display-safe
+// each target's settings with named, display-safe fields.
-// fields.
 //
 // A soft-deleted row projects exactly as a live one does, minus
 // the deleted marker on its name: masking is a property of the
@@ -91,8 +91,8 @@ func NewTargetViews(
 }
 
 // targetConfigFields returns the display-safe fields for a
-// target's configuration. Anything it cannot parse becomes
+// target's settings. A target of an unknown type gets the
-// the neutral placeholder.
+// neutral placeholder.
 func targetConfigFields(
 	t *database.Target,
 ) []ConfigField {
@@ -102,36 +102,25 @@ func targetConfigFields(
 	case database.TargetTypeHTTP:
 		return httpConfigFields(t)
 	case database.TargetTypeDatabase:
-		return databaseConfigFields(t.Config)
+		return databaseConfigFields(t)
 	case database.TargetTypeLog:
-		// The log target takes no configuration.
+		// The log target takes no settings.
 		return nil
 	default:
-		return unavailableConfigFields()
+		return []ConfigField{{
+			Label: "Configuration",
+			Value: configUnavailable,
+		}}
 	}
 }
 
-// unavailableConfigFields is the neutral placeholder shown
-// for a configuration that could not be presented.
-func unavailableConfigFields() []ConfigField {
-	return []ConfigField{{
-		Label: "Configuration",
-		Value: configUnavailable,
-	}}
-}
-
 // slackConfigFields describes a Slack target: its masked
 // webhook URL and its number of delivery attempts. Only the
 // masked URL is shown; the full URL is the credential.
 func slackConfigFields(t *database.Target) []ConfigField {
-	cfg, err := parseSlackConfig(t.Config)
-	if err != nil {
-		return unavailableConfigFields()
-	}
-
 	return []ConfigField{{
 		Label: "Webhook URL",
-		Value: cfg.MaskedWebhookURL(),
+		Value: MaskURL(t.URL),
 	}, maxAttemptsField(t)}
 }
 
@@ -146,33 +135,28 @@ func slackConfigFields(t *database.Target) []ConfigField {
 // whose path segments are the credential, and the field takes
 // an arbitrary URL, so no segment can be assumed non-secret.
 func httpConfigFields(t *database.Target) []ConfigField {
-	cfg, err := parseHTTPConfig(t.Config)
-	if err != nil {
-		return unavailableConfigFields()
-	}
-
 	fields := []ConfigField{{
 		Label: "Destination URL",
-		Value: MaskURL(cfg.URL),
+		Value: MaskURL(t.URL),
 	}}
 
-	if cfg.Timeout > 0 {
+	if t.TimeoutSeconds > 0 {
 		fields = append(fields, ConfigField{
 			Label: "Timeout",
-			Value: strconv.Itoa(cfg.Timeout) + "s",
+			Value: strconv.Itoa(t.TimeoutSeconds) + "s",
 		})
 	}
 
-	if len(cfg.Headers) > 0 {
+	if len(t.Headers) > 0 {
 		fields = append(fields, ConfigField{
 			Label: "Headers",
 			Value: fmt.Sprintf(
-				"%d configured", len(cfg.Headers),
+				"%d configured", len(t.Headers),
 			),
 		})
 	}
 
-	if cfg.ForwardQuery {
+	if t.ForwardQuery {
 		fields = append(fields, ConfigField{
 			Label: "Query string",
 			Value: "passed on to this target",
@@ -185,8 +169,7 @@ func httpConfigFields(t *database.Target) []ConfigField {
 }
 
 // maxAttemptsField describes a target's number of delivery
-// attempts, which lives on the target row rather than in its
+// attempts.
-// configuration blob.
 func maxAttemptsField(t *database.Target) ConfigField {
 	return ConfigField{
 		Label: "Delivery attempts",
@@ -196,24 +179,11 @@ func maxAttemptsField(t *database.Target) ConfigField {
 
 // databaseConfigFields describes an archive target by its
 // expiry in plain units, such as "30 days", or "never" when
-// the archive is kept forever, and by its rotation. An expiry
+// the archive is kept forever, and by its rotation.
-// that is set but not a valid duration, or a rotation that is
+func databaseConfigFields(t *database.Target) []ConfigField {
-// not one of the four, is reported as unavailable rather than
-// echoed back.
-func databaseConfigFields(configJSON string) []ConfigField {
-	expiry, err := archive.ParseExpiry(configJSON)
-	if err != nil {
-		return unavailableConfigFields()
-	}
-
-	rotation, err := archive.ParseRotation(configJSON)
-	if err != nil {
-		return unavailableConfigFields()
-	}
-
 	value := archive.ExpiryNever
-	if expiry > 0 {
+	if t.ArchiveExpiry > 0 {
-		value = plainDuration(expiry)
+		value = plainDuration(t.ArchiveExpiry)
 	}
 
 	return []ConfigField{{
@@ -221,7 +191,7 @@ func databaseConfigFields(configJSON string) []ConfigField {
 		Value: value,
 	}, {
 		Label: "Archive rotation",
-		Value: rotation,
+		Value: t.ArchiveRotation,
 	}}
 }
 
@@ -257,14 +227,3 @@ func plainDuration(d time.Duration) string {
 
 	return d.String()
 }
-
-// MaskedWebhookURL returns the Slack webhook URL reduced to
-// its scheme and host, with the path, query and any userinfo
-// elided. The path segments are the credential, so none of
-// them is shown: the field accepts an arbitrary URL, so no
-// segment can be assumed non-secret. A URL that does not
-// parse into a scheme and host yields the neutral
-// placeholder, never the raw string.
-func (c *SlackTargetConfig) MaskedWebhookURL() string {
-	return MaskURL(c.WebhookURL)
-}

internal/delivery/target_config_view_test.go

@@ -35,18 +35,17 @@ const (
 	viewMaxAttempts   = "Delivery attempts"
 )
 
-// The archive rotations a database target's settings can name, and
+// The archive rotations a database target's settings can name.
-// the config of one whose rotation is not one of the four.
 const (
 	rotationNone    = "none"
 	rotationMonthly = "monthly"
 	rotationDaily   = "daily"
 	rotationHourly  = "hourly"
-
-	weeklyConfig = `{"rotation":"weekly"}`
 )
 
-func TestMaskedWebhookURL(t *testing.T) {
+// TestNewTargetViews_SlackMasksWebhookURL shows what a Slack target's
+// URL renders as on the target list.
+func TestNewTargetViews_SlackMasksWebhookURL(t *testing.T) {
 	t.Parallel()
 
 	tests := map[string]struct {
@@ -90,28 +89,24 @@ func TestMaskedWebhookURL(t *testing.T) {
 		t.Run(name, func(t *testing.T) {
 			t.Parallel()
 
-			cfg := &delivery.SlackTargetConfig{
+			target := slackTarget()
-				WebhookURL: tc.url,
+			target.URL = tc.url
-			}
 
 			assert.Equal(
-				t, tc.want, cfg.MaskedWebhookURL(),
+				t, tc.want,
+				fieldMap(viewFor(t, target).Config)["Webhook URL"],
 			)
 		})
 	}
 }
 
-// TestMaskedWebhookURL_NeverLeaksPath is the direct
+// TestNewTargetViews_SlackNeverLeaksPath is the direct
 // expression of the rule: whatever the input, the masked
 // value never contains a path segment of it.
-func TestMaskedWebhookURL_NeverLeaksPath(t *testing.T) {
+func TestNewTargetViews_SlackNeverLeaksPath(t *testing.T) {
 	t.Parallel()
 
-	cfg := &delivery.SlackTargetConfig{
+	masked := fieldMap(viewFor(t, slackTarget()).Config)["Webhook URL"]
-		WebhookURL: slackWebhookURL,
-	}
-
-	masked := cfg.MaskedWebhookURL()
 
 	assert.NotContains(t, masked, "T00000000")
 	assert.NotContains(t, masked, "B00000000")
@@ -177,11 +172,10 @@ func TestNewTargetViews_DeletedTarget(t *testing.T) {
 // share.
 func slackTarget() database.Target {
 	return database.Target{
-		Name:   slackTargetName,
+		Name:        slackTargetName,
-		Type:   database.TargetTypeSlack,
+		Type:        database.TargetTypeSlack,
-		Active: true,
+		Active:      true,
-		Config: `{"webhookUrl":"` +
+		URL:         slackWebhookURL,
-			slackWebhookURL + `"}`,
 		MaxAttempts: 1,
 	}
 }
@@ -233,12 +227,12 @@ func TestNewTargetViews_HTTP(t *testing.T) {
 	t.Parallel()
 
 	view := viewFor(t, database.Target{
-		Type: database.TargetTypeHTTP,
+		Type:           database.TargetTypeHTTP,
-		Config: `{"url":"` + viewExampleHook + `",` +
+		URL:            viewExampleHook,
-			`"timeout":30,` +
+		TimeoutSeconds: 30,
-			`"headers":{"Authorization":"Bearer sekrit"},` +
+		Headers:        map[string]string{headerAuthorization: "Bearer sekrit"},
-			`"forwardQuery":true}`,
+		ForwardQuery:   true,
-		MaxAttempts: 5,
+		MaxAttempts:    5,
 	})
 
 	fields := fieldMap(view.Config)
@@ -268,7 +262,7 @@ func TestNewTargetViews_HTTPSingleAttempt(t *testing.T) {
 
 	view := viewFor(t, database.Target{
 		Type:        database.TargetTypeHTTP,
-		Config:      `{"url":"` + viewExampleHook + `"}`,
+		URL:         viewExampleHook,
 		MaxAttempts: 1,
 	})
 
@@ -291,7 +285,7 @@ func TestNewTargetViews_HTTPMasksDestinationURL(t *testing.T) {
 
 	view := viewFor(t, database.Target{
 		Type:        database.TargetTypeHTTP,
-		Config:      `{"url":"` + slackWebhookURL + `"}`,
+		URL:         slackWebhookURL,
 		MaxAttempts: 1,
 	})
 
@@ -315,25 +309,20 @@ func TestNewTargetViews_Database(t *testing.T) {
 	t.Parallel()
 
 	tests := map[string]struct {
-		config string
+		expiry time.Duration
 		want   string
 	}{
-		"empty config": {config: "", want: viewExpiryNever},
+		"never": {expiry: 0, want: viewExpiryNever},
-		"empty expiry": {config: `{}`, want: viewExpiryNever},
+		"1h":    {expiry: time.Hour, want: "1 hour"},
-		"never literal": {
+		"12h":   {expiry: 12 * time.Hour, want: "12 hours"},
-			config: `{"expiry":"` + viewExpiryNever + `"}`,
+		"24h":   {expiry: 24 * time.Hour, want: "1 day"},
-			want:   viewExpiryNever,
+		"720h":  {expiry: 720 * time.Hour, want: "30 days"},
-		},
+		"2160h": {expiry: 2160 * time.Hour, want: "90 days"},
-		"1h":    {config: `{"expiry":"1h"}`, want: "1 hour"},
+		"8760h": {expiry: 8760 * time.Hour, want: "365 days"},
-		"12h":   {config: `{"expiry":"12h"}`, want: "12 hours"},
+		"36h":   {expiry: 36 * time.Hour, want: "36 hours"},
-		"24h":   {config: `{"expiry":"24h"}`, want: "1 day"},
+		"1h30m": {expiry: 90 * time.Minute, want: "90 minutes"},
-		"720h":  {config: `{"expiry":"720h"}`, want: "30 days"},
+		"45s":   {expiry: 45 * time.Second, want: "45 seconds"},
-		"2160h": {config: `{"expiry":"2160h"}`, want: "90 days"},
+		"1.5s":  {expiry: 1500 * time.Millisecond, want: "1.5s"},
-		"8760h": {config: `{"expiry":"8760h"}`, want: "365 days"},
-		"36h":   {config: `{"expiry":"36h"}`, want: "36 hours"},
-		"1h30m": {config: `{"expiry":"1h30m"}`, want: "90 minutes"},
-		"45s":   {config: `{"expiry":"45s"}`, want: "45 seconds"},
-		"1.5s":  {config: `{"expiry":"1.5s"}`, want: "1.5s"},
 	}
 
 	for name, tc := range tests {
@@ -341,8 +330,9 @@ func TestNewTargetViews_Database(t *testing.T) {
 			t.Parallel()
 
 			view := viewFor(t, database.Target{
-				Type:   database.TargetTypeDatabase,
+				Type:            database.TargetTypeDatabase,
-				Config: tc.config,
+				ArchiveExpiry:   tc.expiry,
+				ArchiveRotation: rotationNone,
 			})
 
 			assert.Equal(
@@ -358,33 +348,23 @@ func TestNewTargetViews_Database(t *testing.T) {
 }
 
 // TestNewTargetViews_DatabaseRotation proves the target list shows a
-// database target's rotation, none when it has none stored.
+// database target's rotation.
 func TestNewTargetViews_DatabaseRotation(t *testing.T) {
 	t.Parallel()
 
-	// Each stored config, and the rotation the list shows for it.
-	tests := map[string]string{
-		"":                rotationNone,
-		`{"rotation":""}`: rotationNone,
-	}
-
 	for _, rotation := range []string{
 		rotationNone, rotationMonthly, rotationDaily, rotationHourly,
 	} {
-		tests[`{"rotation":"`+rotation+`"}`] = rotation
+		t.Run(rotation, func(t *testing.T) {
-	}
-
-	for config, want := range tests {
-		t.Run(config, func(t *testing.T) {
 			t.Parallel()
 
 			view := viewFor(t, database.Target{
-				Type:   database.TargetTypeDatabase,
+				Type:            database.TargetTypeDatabase,
-				Config: config,
+				ArchiveRotation: rotation,
 			})
 
 			assert.Equal(
-				t, want, fieldMap(view.Config)["Archive rotation"],
+				t, rotation, fieldMap(view.Config)["Archive rotation"],
 			)
 		})
 	}
@@ -394,72 +374,28 @@ func TestNewTargetViews_Log(t *testing.T) {
 	t.Parallel()
 
 	view := viewFor(t, database.Target{
-		Type:   database.TargetTypeLog,
+		Type: database.TargetTypeLog,
-		Config: "",
 	})
 
 	assert.Empty(t, view.Config)
 }
 
-// TestNewTargetViews_Unpresentable proves that no config the
+// TestNewTargetViews_UnknownType proves that a target of a type the
-// view cannot present falls back to the stored blob.
+// view does not know shows the neutral placeholder, and never its
-func TestNewTargetViews_Unpresentable(t *testing.T) {
+// URL.
+func TestNewTargetViews_UnknownType(t *testing.T) {
 	t.Parallel()
 
-	const blob = `{"webhookUrl":"https://hooks.slack.com` +
+	view := viewFor(t, database.Target{
-		slackSecretPath + `"`
+		Type: database.TargetType("carrier-pigeon"),
+		URL:  slackWebhookURL,
+	})
 
-	tests := map[string]database.Target{
+	assert.Equal(
-		"unknown target type": {
+		t,
-			Type:   database.TargetType("carrier-pigeon"),
+		map[string]string{
-			Config: blob,
+			"Configuration": viewUnavailable,
 		},
-		"unparseable json": {
+		fieldMap(view.Config),
-			Type:        database.TargetTypeSlack,
+	)
-			Config:      blob,
-			MaxAttempts: 1,
-		},
-		"empty slack config": {
-			Type:        database.TargetTypeSlack,
-			MaxAttempts: 1,
-		},
-		"slack config without url": {
-			Type:        database.TargetTypeSlack,
-			Config:      `{}`,
-			MaxAttempts: 1,
-		},
-		"unparseable http json": {
-			Type:        database.TargetTypeHTTP,
-			Config:      `{"url":`,
-			MaxAttempts: 1,
-		},
-		"unparseable archive json": {
-			Type:   database.TargetTypeDatabase,
-			Config: `{"expiry":`,
-		},
-		"invalid archive expiry": {
-			Type:   database.TargetTypeDatabase,
-			Config: `{"expiry":"a fortnight"}`,
-		},
-		"invalid archive rotation": {
-			Type:   database.TargetTypeDatabase,
-			Config: weeklyConfig,
-		},
-	}
-
-	for name, target := range tests {
-		t.Run(name, func(t *testing.T) {
-			t.Parallel()
-
-			view := viewFor(t, target)
-
-			assert.Equal(
-				t,
-				map[string]string{
-					"Configuration": viewUnavailable,
-				},
-				fieldMap(view.Config),
-			)
-		})
-	}
 }

internal/delivery/target_database_test.go

@@ -1,6 +1,7 @@
 package delivery_test
 
 import (
+	"context"
 	"database/sql"
 	"fmt"
 	"log/slog"
@@ -20,6 +21,7 @@ import (
 	"sneak.berlin/go/webhooker/internal/archive"
 	"sneak.berlin/go/webhooker/internal/database"
 	"sneak.berlin/go/webhooker/internal/database/databasetest"
+	"sneak.berlin/go/webhooker/internal/db/migrations"
 	"sneak.berlin/go/webhooker/internal/delivery"
 	"sneak.berlin/go/webhooker/internal/gormlog"
 )
@@ -78,10 +80,11 @@ func (env *archiveEnv) archivePath(tgt *database.Target) string {
 	)
 }
 
-// seedDatabaseTarget creates a webhook with one database target
+// seedDatabaseTarget creates a webhook with one database target,
-// carrying the given target config JSON, and returns the target.
+// which keeps its archive forever in one file, and returns the
+// target.
 func (env *archiveEnv) seedDatabaseTarget(
-	t *testing.T, configJSON string,
+	t *testing.T,
 ) *database.Target {
 	t.Helper()
 
@@ -97,12 +100,12 @@ func (env *archiveEnv) seedDatabaseTarget(
 	)
 
 	tgt := &database.Target{
-		WebhookID:   wh.ID,
+		WebhookID:       wh.ID,
-		Name:        "Archive",
+		Name:            "Archive",
-		Type:        database.TargetTypeDatabase,
+		Type:            database.TargetTypeDatabase,
-		Active:      true,
+		Active:          true,
-		Config:      configJSON,
+		ArchiveRotation: "none",
-		MaxAttempts: 1,
+		MaxAttempts:     1,
 	}
 	require.NoError(
 		t,
@@ -136,9 +139,10 @@ func seedDatabaseTargetDelivery(
 		Status:   database.DeliveryStatusPending,
 		Event:    event,
 		Target: database.Target{
-			Name:   tgt.Name,
+			Name:            tgt.Name,
-			Type:   database.TargetTypeDatabase,
+			Type:            database.TargetTypeDatabase,
-			Config: tgt.Config,
+			ArchiveExpiry:   tgt.ArchiveExpiry,
+			ArchiveRotation: tgt.ArchiveRotation,
 		},
 	}
 	d.ID = dlv.ID
@@ -218,7 +222,7 @@ func TestDeliverDatabase_ArchivesEvent(t *testing.T) {
 	t.Parallel()
 
 	env := setupArchiveTest(t)
-	tgt := env.seedDatabaseTarget(t, "")
+	tgt := env.seedDatabaseTarget(t)
 
 	webhookDB := testWebhookDB(t)
 	event := seedEvent(t, webhookDB, `{"archived":true}`)
@@ -256,9 +260,9 @@ func TestDeliverDatabase_ArchivesEvent(t *testing.T) {
 }
 
 // TestDeliverDatabase_ArchiveFailureFailsDelivery verifies that
-// an archive error (here: an unparseable expiry in the target
+// an archive error (here: an event with no webhook id to record)
-// config) fails the delivery loudly: the attempt is recorded as
+// fails the delivery loudly: the attempt is recorded as failed
-// failed with the error and the delivery is marked failed, not
+// with the error and the delivery is marked failed, not
 // delivered.
 func TestDeliverDatabase_ArchiveFailureFailsDelivery(
 	t *testing.T,
@@ -266,11 +270,12 @@ func TestDeliverDatabase_ArchiveFailureFailsDelivery(
 	t.Parallel()
 
 	env := setupArchiveTest(t)
-	tgt := env.seedDatabaseTarget(t, `{"expiry":"nonsense"}`)
+	tgt := env.seedDatabaseTarget(t)
 
 	webhookDB := testWebhookDB(t)
 	event := seedEvent(t, webhookDB, `{"archived":false}`)
 	d := seedDatabaseTargetDelivery(t, webhookDB, event, tgt)
+	d.Event.WebhookID = ""
 
 	env.eng.ExportDeliverDatabase(webhookDB, d)
 
@@ -295,12 +300,96 @@ func TestDeliverDatabase_ArchiveFailureFailsDelivery(
 		"the attempt must be recorded as failed",
 	)
 	assert.Contains(t,
-		results[0].Error, "nonsense",
+		results[0].Error, "without a webhook id",
 		"the archive error must be recorded on the attempt",
 	)
 
 	assert.NoFileExists(t,
 		env.archivePath(tgt),
-		"no archive file should exist for a failed config",
+		"no archive file should exist for a failed write",
+	)
+}
+
+// seedArchivedRow creates the archive file at path holding one row, for
+// eventID, archived at archivedAt.
+func seedArchivedRow(
+	t *testing.T, path, eventID string, archivedAt time.Time,
+) {
+	t.Helper()
+
+	sqlDB, err := sql.Open(
+		"sqlite", fmt.Sprintf("file:%s?mode=rwc", path),
+	)
+	require.NoError(t, err)
+
+	defer func() { _ = sqlDB.Close() }()
+
+	gdb, err := gorm.Open(
+		sqlite.Dialector{Conn: sqlDB},
+		&gorm.Config{Logger: gormlog.New(slog.New(slog.DiscardHandler))},
+	)
+	require.NoError(t, err)
+
+	require.NoError(t, migrations.Apply(gdb, migrations.Archive))
+	require.NoError(t, gdb.Exec(
+		"INSERT INTO archived_events (event_id, archived_at) VALUES (?, ?)",
+		eventID, archivedAt,
+	).Error)
+}
+
+// TestDeliverDatabase_TaskArchiveSettings proves a task's ArchiveExpiry
+// and ArchiveRotation reach the archive through the engine. The
+// target's row has neither, so only the task can bring them: with daily
+// rotation the event goes to the file for its day, and opening that
+// file with a one-hour expiry prunes the row it already held, archived
+// two hours ago.
+func TestDeliverDatabase_TaskArchiveSettings(t *testing.T) {
+	t.Parallel()
+
+	s := newISetup(t)
+
+	webhook := database.Webhook{UserID: uuid.NewString(), Name: "settings"}
+	webhook.ID = s.WebhookID
+	require.NoError(t, s.MainDB.Create(&webhook).Error)
+
+	target := database.Target{
+		WebhookID:   s.WebhookID,
+		Name:        "archive",
+		Type:        database.TargetTypeDatabase,
+		Active:      true,
+		MaxAttempts: 1,
+	}
+	require.NoError(t, s.MainDB.Create(&target).Error)
+
+	event := iSeedEvent(t, s.WebhookDB, s.WebhookID, `{"archived":true}`)
+	d := iSeedDelivery(
+		t, s.WebhookDB, event.ID, target.ID,
+		database.DeliveryStatusPending,
+	)
+
+	task := iTask(
+		d, event, s.WebhookID, target.ID, target.Name, "", 1, 1,
+		&event.Body,
+	)
+	task.TargetType = database.TargetTypeDatabase
+	task.ArchiveExpiry = time.Hour
+	task.ArchiveRotation = "daily"
+
+	daily := target
+	daily.ArchiveRotation = task.ArchiveRotation
+	dailyFile := archive.PathAt(s.DBMgr, &webhook, &daily, event.CreatedAt)
+	seedArchivedRow(t, dailyFile, "expired", time.Now().Add(-2*time.Hour))
+
+	s.Engine.ExportProcessNewTask(context.TODO(), &task)
+
+	iAssertStatus(t, s.WebhookDB, d.ID, database.DeliveryStatusDelivered)
+
+	var rows []archivedRow
+
+	require.NoError(t, openArchiveDBForRead(t, dailyFile).
+		Table("archived_events").Find(&rows).Error)
+	require.Len(t, rows, 1)
+	assert.Equal(t, event.ID, rows[0].EventID,
+		"the event goes to its day's file and the expired row is pruned",
 	)
 }

internal/delivery/target_headers.go

@@ -17,7 +17,7 @@ import (
 const MaxTargetTimeoutSeconds = 300
 
 // Errors returned when a target's header or timeout form input
-// cannot be turned into a configuration.
+// cannot be turned into the target's setting.
 //
 // None of these ever quotes a header VALUE. A target header value
 // is routinely an authorization token, and these messages are shown
@@ -48,8 +48,8 @@ var (
 )
 
 // isReservedTargetHeader reports whether name (canonicalised) is a
-// header a target configuration may not set, because the delivery
+// header a target may not set, because the delivery path or
-// path or net/http itself writes it regardless.
+// net/http itself writes it regardless.
 //
 // These are rejected rather than accepted-and-ignored. Storing a
 // header that provably never reaches the wire tells the operator
@@ -77,13 +77,11 @@ func isReservedTargetHeader(name string) bool {
 
 // ParseTargetHeaders turns the target form's headers field — one
 // "Name: value" pair per line, blank lines ignored — into the map
-// stored in HTTPTargetConfig.Headers. Names are canonicalised, so a
+// stored in database.Target.Headers. Names are canonicalised, so a
 // name repeated in a different case is still a duplicate rather than
 // one pair silently overwriting the other.
 //
-// An input with no pairs yields an empty map, which omitempty drops
+// An input with no pairs yields an empty map.
-// from the stored config, so a target configured with no headers
-// stores no headers key at all.
 func ParseTargetHeaders(raw string) (map[string]string, error) {
 	headers := make(map[string]string)
 
@@ -223,8 +221,8 @@ func FormatTargetHeaders(headers map[string]string) string {
 
 // ParseTargetTimeout interprets the target form's timeout field as
 // a whole number of seconds. An empty field means "unset" and yields
-// 0, which omitempty drops from the stored config and which the
+// 0, which the delivery path reads as "use the shared client's
-// delivery path reads as "use the shared client's timeout".
+// timeout".
 //
 // Anything else that is not a whole number in range is an error, not
 // a silently substituted default: a target whose timeout was typed

internal/delivery/target_headers_test.go

@@ -1,23 +1,21 @@
 package delivery_test
 
 import (
-	"encoding/json"
 	"strconv"
 	"testing"
 
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
-	"sneak.berlin/go/webhooker/internal/database"
 	"sneak.berlin/go/webhooker/internal/delivery"
 )
 
-// Literals these tests repeat, named so that the header names and the
+// Literals these tests repeat, named so that each header name has one
-// keep-forever archive config each have one definition.
+// definition.
 const (
 	headerAuthorization = "Authorization"
 	headerContentType   = "Content-Type"
+	headerUserAgent     = "User-Agent"
 	bearerValue         = "Bearer abc"
-	archiveConfigNever  = "{\"expiry\":\"never\"}"
 )
 
 func TestParseTargetHeaders_AcceptsPairs(t *testing.T) {
@@ -41,23 +39,13 @@ func TestParseTargetHeaders_AcceptsPairs(t *testing.T) {
 	)
 }
 
-// A configuration with no headers must stay indistinguishable from
+// An input of blank lines is no headers, not an error.
-// one written before the field existed, so omitempty drops the key.
 func TestParseTargetHeaders_EmptyInputYieldsNoHeaders(t *testing.T) {
 	t.Parallel()
 
 	got, err := delivery.ParseTargetHeaders("\n  \n")
 	require.NoError(t, err)
 	assert.Empty(t, got)
-
-	encoded, err := json.Marshal(delivery.HTTPTargetConfig{
-		URL:     "https://example.com/h",
-		Headers: got,
-	})
-	require.NoError(t, err)
-	assert.JSONEq(
-		t, `{"url":"https://example.com/h"}`, string(encoded),
-	)
 }
 
 func TestParseTargetHeaders_Rejects(t *testing.T) {
@@ -181,89 +169,6 @@ func TestFormatTargetTimeout(t *testing.T) {
 	assert.Empty(t, delivery.FormatTargetTimeout(-1))
 }
 
-func TestNewTargetConfigForm(t *testing.T) {
-	t.Parallel()
-
-	form, err := delivery.NewTargetConfigForm(&database.Target{
-		Type: database.TargetTypeHTTP,
-		Config: `{"url":"https://example.com/h",` +
-			`"headers":{"Authorization":"Bearer abc"},` +
-			`"timeout":9}`,
-		MaxAttempts: 1,
-	})
-	require.NoError(t, err)
-	assert.Equal(t, "https://example.com/h", form.URL)
-	assert.Equal(t, "Authorization: Bearer abc\n", form.Headers)
-	assert.Equal(t, "9", form.Timeout)
-
-	form, err = delivery.NewTargetConfigForm(&database.Target{
-		Type:        database.TargetTypeSlack,
-		Config:      `{"webhookUrl":"https://hooks.example/s"}`,
-		MaxAttempts: 1,
-	})
-	require.NoError(t, err)
-	assert.Equal(t, "https://hooks.example/s", form.URL)
-
-	form, err = delivery.NewTargetConfigForm(&database.Target{
-		Type:   database.TargetTypeDatabase,
-		Config: `{"expiry":"720h","rotation":"daily"}`,
-	})
-	require.NoError(t, err)
-	assert.Equal(t, "720h", form.Expiry)
-	assert.Equal(t, rotationDaily, form.Rotation)
-
-	form, err = delivery.NewTargetConfigForm(&database.Target{
-		Type: database.TargetTypeLog,
-	})
-	require.NoError(t, err)
-	assert.Empty(t, form.URL)
-}
-
-// A keep-forever archive target yields an empty expiry, so the edit
-// form starts on never; saving it unchanged stores never, which means
-// the same as an empty expiry.
-func TestNewTargetConfigForm_DatabaseNeverIsBlank(t *testing.T) {
-	t.Parallel()
-
-	for _, cfg := range []string{"", `{}`, archiveConfigNever} {
-		form, err := delivery.NewTargetConfigForm(
-			&database.Target{
-				Type:   database.TargetTypeDatabase,
-				Config: cfg,
-			},
-		)
-		require.NoError(t, err, cfg)
-		assert.Empty(t, form.Expiry, cfg)
-	}
-}
-
-// An unreadable stored config is an error rather than a blank form
-// that looks like a target with no settings, so the caller can tell
-// the operator that saving replaces the stored value.
-func TestNewTargetConfigForm_UnreadableConfigErrors(t *testing.T) {
-	t.Parallel()
-
-	cases := []*database.Target{
-		{Type: database.TargetTypeHTTP, Config: "not json", MaxAttempts: 1},
-		{Type: database.TargetTypeHTTP, Config: `{}`, MaxAttempts: 1},
-		{Type: database.TargetTypeSlack, Config: "", MaxAttempts: 1},
-		{
-			Type:   database.TargetTypeDatabase,
-			Config: `{"expiry":"soon"}`,
-		},
-		{
-			Type:   database.TargetTypeDatabase,
-			Config: weeklyConfig,
-		},
-		{Type: database.TargetType("nope")},
-	}
-
-	for _, target := range cases {
-		_, err := delivery.NewTargetConfigForm(target)
-		require.Error(t, err, target.Type)
-	}
-}
-
 // The ceiling exists so one misconfigured target cannot hold a
 // delivery worker indefinitely, and it is inclusive.
 func TestParseTargetTimeout_CeilingIsInclusive(t *testing.T) {

internal/delivery/target_http.go

@@ -4,7 +4,6 @@ import (
 	"bytes"
 	"context"
 	"encoding/json"
-	"errors"
 	"fmt"
 	"io"
 	"net/http"
@@ -17,29 +16,6 @@ import (
 	"sneak.berlin/go/webhooker/internal/database"
 )
 
-// Sentinel errors returned by the config parsers.
-var (
-	errEmptyTargetConfig = errors.New(
-		"empty target config",
-	)
-	errMissingTargetURL = errors.New(
-		"target URL is required",
-	)
-)
-
-// HTTPTargetConfig holds configuration for http target
-// types.
-type HTTPTargetConfig struct {
-	URL     string            `json:"url"`
-	Headers map[string]string `json:"headers,omitempty"`
-	Timeout int               `json:"timeout,omitempty"`
-
-	// ForwardQuery passes each event's query string on to the target,
-	// appended to URL. Off, the target URL is sent exactly as
-	// configured.
-	ForwardQuery bool `json:"forwardQuery,omitempty"`
-}
-
 // httpCore holds the retry, backoff, and circuit-breaker
 // machinery shared by the HTTP and Slack targets. Each of
 // those targets owns its own httpCore instance (and thus its
@@ -84,8 +60,8 @@ func (c *httpCore) deliver(
 // engine is stopping, which cancels the context its request is made
 // with. Such an attempt is not recorded: no DeliveryResult, no circuit
 // breaker outcome, no status change, no count in the attempt metrics.
-// The delivery stays pending or retrying, and startup recovery sends
+// The delivery stays pending or retrying, and the recovery routine
-// it again on the next start.
+// sends it again on the next start.
 //
 // A target's own timeout leaves that context alone, so its attempt is
 // still recorded as the failure it is.
@@ -334,7 +310,8 @@ func (c *httpCore) publishCircuitState(
 
 // remainingBackoff returns how long remains of the backoff
 // window for the last attempt of a recovered retrying
-// delivery. It implements rescheduler.
+// delivery: zero once it has passed, or when the last attempt
+// cannot be read. It implements rescheduler.
 func (c *httpCore) remainingBackoff(
 	webhookDB *gorm.DB,
 	deliveryID string,
@@ -357,29 +334,6 @@ func (c *httpCore) remainingBackoff(
 	return max(remaining, 0)
 }
 
-// backoffElapsed reports whether the backoff window for the
-// last attempt of a retrying delivery has passed. It
-// implements rescheduler.
-func (c *httpCore) backoffElapsed(
-	webhookDB *gorm.DB,
-	deliveryID string,
-	attemptNum int,
-) bool {
-	var lastResult database.DeliveryResult
-
-	err := webhookDB.
-		Where("delivery_id = ?", deliveryID).
-		Order("created_at DESC").
-		First(&lastResult).Error
-	if err != nil {
-		return true
-	}
-
-	backoff := Backoff(attemptNum)
-
-	return time.Since(lastResult.CreatedAt) >= backoff
-}
-
 // Backoff is how long an http or slack target with retries waits after
 // a delivery's failed attempt attemptNum before trying it again.
 func Backoff(attemptNum int) time.Duration {
@@ -407,34 +361,8 @@ func (t *httpTarget) Deliver(
 	task *Task,
 	sched Scheduler,
 ) {
-	cfg, err := parseHTTPConfig(d.Target.Config)
-	if err != nil {
-		t.eng.log.Error(
-			"invalid HTTP target config",
-			"target_id", d.TargetID,
-			"error", err,
-		)
-
-		recErr := t.eng.recordResult(
-			webhookDB, d, task.AttemptNum,
-			false, 0, "", err.Error(), 0,
-		)
-		if recErr != nil {
-			t.eng.bookkeepingFailed(d, recErr)
-
-			return
-		}
-
-		t.eng.settleStatus(
-			webhookDB, d, d.Target.Type,
-			database.DeliveryStatusFailed,
-		)
-
-		return
-	}
-
 	attempt := func() attemptResult {
-		return t.attempt(ctx, cfg, &d.Event)
+		return t.attempt(ctx, &d.Target, &d.Event)
 	}
 
 	t.deliver(
@@ -449,11 +377,11 @@ func (t *httpTarget) Deliver(
 // string; only a transport-level error does.
 func (t *httpTarget) attempt(
 	ctx context.Context,
-	cfg *HTTPTargetConfig,
+	target *database.Target,
 	event *database.Event,
 ) attemptResult {
 	statusCode, respBody, duration, reqErr :=
-		t.doHTTPRequest(ctx, cfg, event)
+		t.doHTTPRequest(ctx, target, event)
 
 	success := reqErr == nil &&
 		statusCode >= httpSuccessMin &&
@@ -475,7 +403,7 @@ func (t *httpTarget) attempt(
 
 func (t *httpTarget) doHTTPRequest(
 	ctx context.Context,
-	cfg *HTTPTargetConfig,
+	target *database.Target,
 	event *database.Event,
 ) (int, string, int64, error) {
 	start := time.Now()
@@ -483,7 +411,7 @@ func (t *httpTarget) doHTTPRequest(
 	req, reqErr := http.NewRequestWithContext(
 		ctx,
 		http.MethodPost,
-		cfg.URL,
+		target.URL,
 		bytes.NewReader([]byte(event.Body)),
 	)
 	if reqErr != nil {
@@ -493,15 +421,15 @@ func (t *httpTarget) doHTTPRequest(
 		)
 	}
 
-	if cfg.ForwardQuery {
+	if target.ForwardQuery {
 		appendQuery(req.URL, event.RawQuery)
 	}
 
 	originScoped := applyRequestHeaders(
-		req, event, cfg, t.eng.userAgent(),
+		req, event, target.Headers, t.eng.userAgent(),
 	)
 
-	client := t.clientForRequest(cfg, originScoped)
+	client := t.clientForRequest(target.TimeoutSeconds, originScoped)
 
 	resp, doErr := executeHTTPRequest(client, req)
 
@@ -541,17 +469,17 @@ func appendQuery(u *url.URL, rawQuery string) {
 }
 
 // clientForRequest returns the client for one delivery attempt.
-// originScoped is the header set applyRequestHeaders built for that
+// timeoutSeconds is the target's TimeoutSeconds, and originScoped is
-// attempt; a request with neither a per-target timeout nor an
+// the header set applyRequestHeaders built for that attempt; a
-// origin-scoped header gets the shared client, because there is
+// request with neither a per-target timeout nor an origin-scoped
-// then nothing for the redirect policy to strip and net/http's
+// header gets the shared client, because there is then nothing for
-// default policy already withholds Authorization and Cookie across
+// the redirect policy to strip and net/http's default policy already
-// hosts.
+// withholds Authorization and Cookie across hosts.
 func (t *httpTarget) clientForRequest(
-	cfg *HTTPTargetConfig,
+	timeoutSeconds int,
 	originScoped []string,
 ) *http.Client {
-	if cfg.Timeout <= 0 && len(originScoped) == 0 {
+	if timeoutSeconds <= 0 && len(originScoped) == 0 {
 		return t.client
 	}
 
@@ -564,9 +492,9 @@ func (t *httpTarget) clientForRequest(
 		Transport: t.client.Transport,
 	}
 
-	if cfg.Timeout > 0 {
+	if timeoutSeconds > 0 {
 		client.Timeout = time.Duration(
-			cfg.Timeout,
+			timeoutSeconds,
 		) * time.Second
 	}
 
@@ -577,31 +505,6 @@ func (t *httpTarget) clientForRequest(
 	return client
 }
 
-func parseHTTPConfig(
-	configJSON string,
-) (*HTTPTargetConfig, error) {
-	if configJSON == "" {
-		return nil, errEmptyTargetConfig
-	}
-
-	var cfg HTTPTargetConfig
-
-	err := json.Unmarshal(
-		[]byte(configJSON), &cfg,
-	)
-	if err != nil {
-		return nil, fmt.Errorf(
-			"parsing config JSON: %w", err,
-		)
-	}
-
-	if cfg.URL == "" {
-		return nil, errMissingTargetURL
-	}
-
-	return &cfg, nil
-}
-
 // isForwardableHeader returns true if the header should
 // be forwarded to targets.
 func isForwardableHeader(name string) bool {
@@ -633,11 +536,12 @@ func isForwardableHeader(name string) bool {
 // wins, otherwise the event's ContentType, otherwise none. The inbound
 // Content-Type in the event's headers is never forwarded.
 //
-// userAgent is set last, over any configured or inbound User-Agent.
+// configured is the target's Headers. userAgent is set last, over
+// any configured or inbound User-Agent.
 func applyRequestHeaders(
 	req *http.Request,
 	event *database.Event,
-	cfg *HTTPTargetConfig,
+	configured map[string]string,
 	userAgent string,
 ) []string {
 	if event.ContentType != "" {
@@ -648,7 +552,7 @@ func applyRequestHeaders(
 
 	originScoped := forwardEventHeaders(req, event)
 
-	for k, v := range cfg.Headers {
+	for k, v := range configured {
 		req.Header.Set(k, v)
 		originScoped[http.CanonicalHeaderKey(k)] = struct{}{}
 	}
@@ -713,7 +617,7 @@ func forwardEventHeaders(
 }
 
 // executeHTTPRequest sends an HTTP request using the provided
-// client. URLs are validated by the config parsers and the
+// client. URLs are validated by the target forms and the
 // SSRF-safe transport before reaching here.
 //
 // Transport failures are masked here, at the single point

internal/delivery/target_http_query_test.go

@@ -2,7 +2,6 @@ package delivery_test
 
 import (
 	"context"
-	"encoding/json"
 	"net/http"
 	"net/http/httptest"
 	"testing"
@@ -18,25 +17,13 @@ import (
 // with.
 const eventQuery = "a=1&b=2"
 
-// httpTargetConfig is the stored configuration of an HTTP target at
-// targetURL.
-func httpTargetConfig(
-	t *testing.T, targetURL string, forwardQuery bool,
-) string {
-	t.Helper()
-
-	cfg, err := json.Marshal(delivery.HTTPTargetConfig{
-		URL: targetURL, ForwardQuery: forwardQuery,
-	})
-	require.NoError(t, err)
-
-	return string(cfg)
-}
-
 // deliverWithQuery sends one event that arrived with eventQuery to an
-// HTTP target configured with cfg, through the path a received event's
+// HTTP target at targetURL, with its ForwardQuery setting as given,
-// delivery takes, and returns the attempt it recorded.
+// through the path a received event's delivery takes, and returns the
-func deliverWithQuery(t *testing.T, cfg string) database.DeliveryResult {
+// attempt it recorded.
+func deliverWithQuery(
+	t *testing.T, targetURL string, forwardQuery bool,
+) database.DeliveryResult {
 	t.Helper()
 
 	s := newISetup(t)
@@ -47,8 +34,10 @@ func deliverWithQuery(t *testing.T, cfg string) database.DeliveryResult {
 		database.DeliveryStatusPending,
 	)
 	task := iTask(
-		d, event, s.WebhookID, d.TargetID, "query", cfg, 1, 1, &event.Body,
+		d, event, s.WebhookID, d.TargetID, "query", targetURL, 1, 1,
+		&event.Body,
 	)
+	task.ForwardQuery = forwardQuery
 	task.RawQuery = eventQuery
 
 	s.Engine.ExportProcessNewTask(context.TODO(), &task)
@@ -111,9 +100,9 @@ func TestDeliverHTTP_ForwardQuery(t *testing.T) {
 			))
 			t.Cleanup(ts.Close)
 
-			result := deliverWithQuery(t, httpTargetConfig(
+			result := deliverWithQuery(
 				t, ts.URL+tc.path, tc.forwardQuery,
-			))
+			)
 
 			assert.True(t, result.Success)
 			require.Len(t, received, 1)
@@ -144,12 +133,13 @@ func TestDeliverHTTP_ForwardedQueryKeepsTheTargetURLMasked(t *testing.T) {
 	t.Cleanup(ts.Close)
 
 	target := &database.Target{
-		Type:        database.TargetTypeHTTP,
+		Type:         database.TargetTypeHTTP,
-		Config:      httpTargetConfig(t, ts.URL+"/in?token="+secret, true),
+		URL:          ts.URL + "/in?token=" + secret,
-		MaxAttempts: 1,
+		ForwardQuery: true,
+		MaxAttempts:  1,
 	}
 
-	deliverWithQuery(t, target.Config)
+	deliverWithQuery(t, target.URL, target.ForwardQuery)
 	require.Len(t, received, 1)
 
 	sent := <-received
@@ -164,9 +154,9 @@ func TestDeliverHTTP_ForwardedQueryKeepsTheTargetURLMasked(t *testing.T) {
 	}
 
 	// Nothing listens on port 1.
-	failed := deliverWithQuery(t, httpTargetConfig(
+	failed := deliverWithQuery(
 		t, "http://127.0.0.1:1/in?token="+secret, true,
-	))
+	)
 	require.NotEmpty(t, failed.Error)
 	assert.NotContains(t, failed.Error, secret)
 	assert.NotContains(t, failed.Error, eventQuery)

internal/delivery/target_redact.go

@@ -18,7 +18,7 @@ const RedactionMarker = "(redacted)"
 // line behind the delivery path's own URL masking.
 //
 // It removes byte-identical echoes of strings taken from the
-// target's stored configuration, and nothing else. Anything
+// target's URL and headers, and nothing else. Anything
 // the remote re-encodes survives: JSON "\/" escaping (what
 // PHP's json_encode emits by default), percent-encoding, HTML
 // entities, and an echo of only part of a path. It cannot
@@ -115,7 +115,7 @@ func (r Redactor) secretPrefixSuffix(s string) int {
 }
 
 // targetSecrets returns the credential-bearing strings a
-// target's configuration carries.
+// target's settings carry.
 //
 // The destination URL contributes. Its path, query and
 // userinfo are the credential for both target types that have
@@ -129,36 +129,15 @@ func (r Redactor) secretPrefixSuffix(s string) int {
 // picks out. That is the same class-based rule applied to
 // URLs: an echoed Accept or User-Agent still renders, an
 // echoed Authorization does not.
+//
+// A setting a type does not use is empty and contributes
+// nothing, so a database or log target has nothing to redact.
 func targetSecrets(t *database.Target) []string {
 	if t == nil {
 		return nil
 	}
 
-	switch t.Type {
+	return append(urlSecrets(t.URL), headerSecrets(t.Headers)...)
-	case database.TargetTypeSlack:
-		cfg, err := parseSlackConfig(t.Config)
-		if err != nil {
-			return nil
-		}
-
-		return urlSecrets(cfg.WebhookURL)
-	case database.TargetTypeHTTP:
-		cfg, err := parseHTTPConfig(t.Config)
-		if err != nil {
-			return nil
-		}
-
-		return append(
-			urlSecrets(cfg.URL),
-			headerSecrets(cfg.Headers)...,
-		)
-	case database.TargetTypeDatabase, database.TargetTypeLog:
-		// Neither has a destination URL, so neither has
-		// anything to redact.
-		return nil
-	default:
-		return nil
-	}
 }
 
 // urlSecrets returns the substrings of a destination URL that

internal/delivery/target_redact_test.go

@@ -23,7 +23,7 @@ func TestRedactor_RemovesSlackWebhookURL(t *testing.T) {
 
 	r := delivery.NewRedactor(&database.Target{
 		Type:        database.TargetTypeSlack,
-		Config:      `{"webhookUrl":"` + redactWebhookURL + `"}`,
+		URL:         redactWebhookURL,
 		MaxAttempts: 1,
 	})
 
@@ -54,7 +54,7 @@ func TestRedactor_RemovesSecretSeveredByACut(t *testing.T) {
 
 	r := delivery.NewRedactor(&database.Target{
 		Type:        database.TargetTypeSlack,
-		Config:      `{"webhookUrl":"` + redactWebhookURL + `"}`,
+		URL:         redactWebhookURL,
 		MaxAttempts: 1,
 	})
 
@@ -86,18 +86,19 @@ func TestRedactor_RedactsCredentialShapedHeaderValues(
 
 	r := delivery.NewRedactor(&database.Target{
 		Type: database.TargetTypeHTTP,
-		Config: `{"url":"https://example.com/in",` +
+		URL:  "https://example.com/in",
-			`"headers":{` +
+		Headers: map[string]string{
-			`"Authorization":"Bearer AAAAAAAAAAAA",` +
+			headerAuthorization: "Bearer AAAAAAAAAAAA",
-			`"Cookie":"session=BBBBBBBBBBBB",` +
+			"Cookie":            "session=BBBBBBBBBBBB",
-			`"X-Api-Key":"CCCCCCCCCCCC",` +
+			probeHeaderName:     "CCCCCCCCCCCC",
-			`"X-Hub-Signature":"sha256=DDDDDDDDDDDD",` +
+			"X-Hub-Signature":   "sha256=DDDDDDDDDDDD",
-			`"X-Sig":"EEEEEEEEEEEE",` +
+			"X-Sig":             "EEEEEEEEEEEE",
-			`"X-Pass":"FFFFFFFFFFFF",` +
+			"X-Pass":            "FFFFFFFFFFFF",
-			`"X-HMAC":"GGGGGGGGGGGG",` +
+			"X-HMAC":            "GGGGGGGGGGGG",
-			`"X-Credential":"HHHHHHHHHHHH",` +
+			"X-Credential":      "HHHHHHHHHHHH",
-			`"Accept":"application/json",` +
+			"Accept":            "application/json",
-			`"User-Agent":"webhooker/1.0"}}`,
+			headerUserAgent:     "webhooker/1.0",
+		},
 		MaxAttempts: 1,
 	})
 
@@ -136,9 +137,9 @@ func TestRedactor_IgnoresVeryShortHeaderValues(t *testing.T) {
 	t.Parallel()
 
 	r := delivery.NewRedactor(&database.Target{
-		Type: database.TargetTypeHTTP,
+		Type:        database.TargetTypeHTTP,
-		Config: `{"url":"https://example.com/in",` +
+		URL:         "https://example.com/in",
-			`"headers":{"X-Api-Key":"ab"}}`,
+		Headers:     map[string]string{probeHeaderName: "ab"},
 		MaxAttempts: 1,
 	})
 
@@ -155,7 +156,7 @@ func TestRedactor_RemovesBarePath(t *testing.T) {
 
 	r := delivery.NewRedactor(&database.Target{
 		Type:        database.TargetTypeSlack,
-		Config:      `{"webhookUrl":"` + redactWebhookURL + `"}`,
+		URL:         redactWebhookURL,
 		MaxAttempts: 1,
 	})
 
@@ -189,7 +190,7 @@ func TestRedactor_RemovesHTTPURLQueryAndUserinfo(t *testing.T) {
 
 	r := delivery.NewRedactor(&database.Target{
 		Type:        database.TargetTypeHTTP,
-		Config:      `{"url":"` + raw + `"}`,
+		URL:         raw,
 		MaxAttempts: 1,
 	})
 
@@ -239,7 +240,7 @@ func TestRedactor_RemovesEchoedQueryOfURLWithoutPath(t *testing.T) {
 	} {
 		r := delivery.NewRedactor(&database.Target{
 			Type:        database.TargetTypeHTTP,
-			Config:      `{"url":"` + dest + `"}`,
+			URL:         dest,
 			MaxAttempts: 1,
 		})
 
@@ -261,7 +262,7 @@ func TestRedactor_LeavesUnrelatedTextAlone(t *testing.T) {
 
 	r := delivery.NewRedactor(&database.Target{
 		Type:        database.TargetTypeSlack,
-		Config:      `{"webhookUrl":"` + redactWebhookURL + `"}`,
+		URL:         redactWebhookURL,
 		MaxAttempts: 1,
 	})
 
@@ -288,7 +289,7 @@ func TestRedactor_EmptyUserinfoDoesNotShredTheBody(t *testing.T) {
 
 	r := delivery.NewRedactor(&database.Target{
 		Type:        database.TargetTypeHTTP,
-		Config:      `{"url":"` + dest + `"}`,
+		URL:         dest,
 		MaxAttempts: 1,
 	})
 
@@ -306,11 +307,10 @@ func TestRedactor_EmptyUserinfoDoesNotShredTheBody(t *testing.T) {
 	)
 }
 
-// TestRedactor_ZeroValueAndConfiglessTargets pins that a
+// TestRedactor_ZeroValueAndURLlessTargets pins that a caller
-// caller with no target, an unparseable config, or a target
+// with no target, or a target with no destination URL, gets a
-// type with no destination URL gets a redactor that changes
+// redactor that changes nothing rather than one that panics.
-// nothing rather than one that panics.
+func TestRedactor_ZeroValueAndURLlessTargets(t *testing.T) {
-func TestRedactor_ZeroValueAndConfiglessTargets(t *testing.T) {
 	t.Parallel()
 
 	const text = "some response body"
@@ -323,8 +323,8 @@ func TestRedactor_ZeroValueAndConfiglessTargets(t *testing.T) {
 	for _, tgt := range []database.Target{
 		{Type: database.TargetTypeLog},
 		{Type: database.TargetTypeDatabase},
-		{Type: database.TargetTypeSlack, Config: "not json", MaxAttempts: 1},
+		{Type: database.TargetTypeSlack, MaxAttempts: 1},
-		{Type: database.TargetTypeHTTP, Config: "", MaxAttempts: 1},
+		{Type: database.TargetTypeHTTP, MaxAttempts: 1},
 	} {
 		assert.Equal(
 			t, text,

internal/delivery/target_slack.go

@@ -4,7 +4,6 @@ import (
 	"bytes"
 	"context"
 	"encoding/json"
-	"errors"
 	"fmt"
 	"io"
 	"net/http"
@@ -15,18 +14,6 @@ import (
 	"sneak.berlin/go/webhooker/internal/database"
 )
 
-// errMissingWebhookURL is returned when a Slack target config
-// omits its webhook URL.
-var errMissingWebhookURL = errors.New(
-	"webhook_url is required",
-)
-
-// SlackTargetConfig holds configuration for slack target
-// types.
-type SlackTargetConfig struct {
-	WebhookURL string `json:"webhookUrl"`
-}
-
 // slackTarget delivers events to Slack incoming webhooks. It
 // formats the event into a Slack message and posts it as
 // JSON. It shares the retry core with the HTTP target: a
@@ -46,19 +33,6 @@ func (t *slackTarget) Deliver(
 	task *Task,
 	sched Scheduler,
 ) {
-	cfg, err := parseSlackConfig(d.Target.Config)
-	if err != nil {
-		t.eng.log.Error(
-			"invalid Slack target config",
-			"target_id", d.TargetID,
-			"error", err,
-		)
-
-		t.failConfig(webhookDB, d, err)
-
-		return
-	}
-
 	msg := FormatSlackMessage(&d.Event)
 
 	payload, err := json.Marshal(
@@ -71,13 +45,26 @@ func (t *slackTarget) Deliver(
 			"error", err,
 		)
 
-		t.failConfig(webhookDB, d, err)
+		recErr := t.eng.recordResult(
+			webhookDB, d, 1,
+			false, 0, "", err.Error(), 0,
+		)
+		if recErr != nil {
+			t.eng.bookkeepingFailed(d, recErr)
+
+			return
+		}
+
+		t.eng.settleStatus(
+			webhookDB, d, d.Target.Type,
+			database.DeliveryStatusFailed,
+		)
 
 		return
 	}
 
 	attempt := func() attemptResult {
-		return t.attempt(ctx, cfg, payload)
+		return t.attempt(ctx, d.Target.URL, payload)
 	}
 
 	t.deliver(
@@ -86,37 +73,13 @@ func (t *slackTarget) Deliver(
 	)
 }
 
-// failConfig records a first-attempt failure for a delivery
+// attempt performs a single Slack POST to targetURL and derives
-// that could not be prepared (bad config or unmarshalable
+// its outcome, preserving the engine's original semantics: a
-// payload) and marks it failed.
-func (t *slackTarget) failConfig(
-	webhookDB *gorm.DB,
-	d *database.Delivery,
-	err error,
-) {
-	recErr := t.eng.recordResult(
-		webhookDB, d, 1,
-		false, 0, "", err.Error(), 0,
-	)
-	if recErr != nil {
-		t.eng.bookkeepingFailed(d, recErr)
-
-		return
-	}
-
-	t.eng.settleStatus(
-		webhookDB, d, d.Target.Type,
-		database.DeliveryStatusFailed,
-	)
-}
-
-// attempt performs a single Slack POST and derives its
-// outcome, preserving the engine's original semantics: a
 // non-2xx response records an "HTTP <code>" error string and
 // a transport error records a "sending request" error.
 func (t *slackTarget) attempt(
 	ctx context.Context,
-	cfg *SlackTargetConfig,
+	targetURL string,
 	payload []byte,
 ) attemptResult {
 	start := time.Now()
@@ -124,7 +87,7 @@ func (t *slackTarget) attempt(
 	req, err := http.NewRequestWithContext(
 		ctx,
 		http.MethodPost,
-		cfg.WebhookURL,
+		targetURL,
 		bytes.NewReader(payload),
 	)
 	if err != nil {
@@ -186,31 +149,6 @@ func (t *slackTarget) readSlackResponse(
 	}
 }
 
-func parseSlackConfig(
-	configJSON string,
-) (*SlackTargetConfig, error) {
-	if configJSON == "" {
-		return nil, errEmptyTargetConfig
-	}
-
-	var cfg SlackTargetConfig
-
-	err := json.Unmarshal(
-		[]byte(configJSON), &cfg,
-	)
-	if err != nil {
-		return nil, fmt.Errorf(
-			"parsing config JSON: %w", err,
-		)
-	}
-
-	if cfg.WebhookURL == "" {
-		return nil, errMissingWebhookURL
-	}
-
-	return &cfg, nil
-}
-
 // FormatSlackMessage builds a Slack-compatible message
 // string from a webhook event.
 func FormatSlackMessage(

internal/delivery/terminal_state_test.go

@@ -45,7 +45,7 @@ func tSeedDeletedTarget(
 
 	iCreateTarget(
 		t, s.MainDB, targetID, s.WebhookID, name,
-		database.TargetTypeHTTP, iHTTPConfig(url), 5,
+		database.TargetTypeHTTP, url, 5,
 	)
 
 	event := iSeedEvent(
@@ -122,9 +122,9 @@ func TestProcessDelivery_UnknownTargetType_RecordsWhy(
 	)
 
 	target := database.Target{
-		Name:   "mystery",
+		Name: "mystery",
-		Type:   tUnknownType,
+		Type: tUnknownType,
-		Config: iHTTPConfig("http://example.com/hook"),
+		URL:  "http://example.com/hook",
 	}
 	target.ID = targetID
 
@@ -140,7 +140,7 @@ func TestProcessDelivery_UnknownTargetType_RecordsWhy(
 	body := event.Body
 	task := iTask(
 		seeded, event, s.WebhookID, targetID, "mystery",
-		target.Config, 0, 1, &body,
+		target.URL, 0, 1, &body,
 	)
 	task.TargetType = tUnknownType
 
@@ -178,7 +178,7 @@ func TestRecoverSingleRetry_TargetDeleted(t *testing.T) {
 	)
 
 	s.Engine.ExportRecoverWebhookDeliveries(
-		context.Background(), s.WebhookID,
+		context.Background(), s.WebhookID, atStart,
 	)
 
 	iAssertStatus(
@@ -201,7 +201,7 @@ func TestRecoverSingleRetry_TargetDeleted(t *testing.T) {
 	)
 }
 
-func TestSweepSingleRetry_TargetDeleted(t *testing.T) {
+func TestRecoverSingleRetry_OnTick_TargetDeleted(t *testing.T) {
 	t.Parallel()
 
 	s := newISetup(t)
@@ -218,11 +218,11 @@ func TestSweepSingleRetry_TargetDeleted(t *testing.T) {
 	// Twice, because the bug was an error the sweep repeated every
 	// minute for the life of the database: the second sweep must
 	// find nothing left to do.
-	s.Engine.ExportSweepWebhookRetries(
+	s.Engine.ExportRecoverWebhookDeliveries(
-		context.Background(), s.WebhookID,
+		context.Background(), s.WebhookID, onTick,
 	)
-	s.Engine.ExportSweepWebhookRetries(
+	s.Engine.ExportRecoverWebhookDeliveries(
-		context.Background(), s.WebhookID,
+		context.Background(), s.WebhookID, onTick,
 	)
 
 	iAssertStatus(
@@ -239,10 +239,11 @@ func TestSweepSingleRetry_TargetDeleted(t *testing.T) {
 	assert.Zero(t, s.Engine.ExportInflightHeld())
 }
 
-// TestSweepSingleRetry_TargetNeverExisted covers the other half of the
+// TestRecoverSingleRetry_OnTick_TargetNeverExisted covers the other
-// soft-delete distinction: an id with no row at all, deleted or
+// half of the soft-delete distinction: an id with no row at all,
-// otherwise, must not be reported as something the operator deleted.
+// deleted or otherwise, must not be reported as something the operator
-func TestSweepSingleRetry_TargetNeverExisted(t *testing.T) {
+// deleted.
+func TestRecoverSingleRetry_OnTick_TargetNeverExisted(t *testing.T) {
 	t.Parallel()
 
 	s := newISetup(t)
@@ -264,8 +265,8 @@ func TestSweepSingleRetry_TargetNeverExisted(t *testing.T) {
 
 	iSeedFailedResult(t, s.WebhookDB, d.ID)
 
-	s.Engine.ExportSweepWebhookRetries(
+	s.Engine.ExportRecoverWebhookDeliveries(
-		context.Background(), s.WebhookID,
+		context.Background(), s.WebhookID, onTick,
 	)
 
 	iAssertStatus(
@@ -303,8 +304,8 @@ func TestFailMissingTarget_WritesNoTargetRow(
 		database.DeliveryStatusRetrying,
 	)
 
-	s.Engine.ExportSweepWebhookRetries(
+	s.Engine.ExportRecoverWebhookDeliveries(
-		context.Background(), s.WebhookID,
+		context.Background(), s.WebhookID, onTick,
 	)
 
 	iAssertStatus(
@@ -345,11 +346,10 @@ func tRetryChainSetup(
 	iCreateWebhook(t, s.MainDB, s.WebhookID, name)
 
 	targetID := uuid.New().String()
-	cfg := iHTTPConfig(ts.URL)
 
 	iCreateTarget(
 		t, s.MainDB, targetID, s.WebhookID, name,
-		database.TargetTypeHTTP, cfg, 5,
+		database.TargetTypeHTTP, ts.URL, 5,
 	)
 
 	event := iSeedEvent(
@@ -366,7 +366,7 @@ func tRetryChainSetup(
 	body := event.Body
 
 	return iTask(
-		d, event, s.WebhookID, targetID, name, cfg, 5, 2, &body,
+		d, event, s.WebhookID, targetID, name, ts.URL, 5, 2, &body,
 	), targetID
 }
 
@@ -527,7 +527,7 @@ func TestRecoverSingleRetry_TargetUnreadable_LeavesDeliveryAlone(
 	iCreateTarget(
 		t, s.MainDB, targetID, s.WebhookID, "healthy",
 		database.TargetTypeHTTP,
-		iHTTPConfig("http://example.com/hook"), 5,
+		"http://example.com/hook", 5,
 	)
 
 	event := iSeedEvent(
@@ -546,7 +546,7 @@ func TestRecoverSingleRetry_TargetUnreadable_LeavesDeliveryAlone(
 	require.NoError(t, sqlDB.Close())
 
 	s.Engine.ExportRecoverRetryingDeliveries(
-		s.WebhookDB, s.WebhookID,
+		context.Background(), s.WebhookDB, s.WebhookID,
 	)
 
 	iAssertStatus(
@@ -564,7 +564,7 @@ func TestRecoverSingleRetry_TargetUnreadable_LeavesDeliveryAlone(
 
 // --- 4. A pending delivery whose target is gone ---
 
-func TestRecoverPending_TargetDeleted(t *testing.T) {
+func TestRecoverPendingDeliveries_TargetDeleted(t *testing.T) {
 	t.Parallel()
 
 	s := newISetup(t)
@@ -577,7 +577,7 @@ func TestRecoverPending_TargetDeleted(t *testing.T) {
 	)
 
 	s.Engine.ExportRecoverWebhookDeliveries(
-		context.Background(), s.WebhookID,
+		context.Background(), s.WebhookID, atStart,
 	)
 
 	iAssertStatus(
@@ -600,10 +600,10 @@ func TestRecoverPending_TargetDeleted(t *testing.T) {
 	)
 }
 
-// TestRecoverPending_TargetDeleted_LeavesAnOwnedDeliveryAlone: the
+// TestRecoverPendingDeliveries_TargetDeleted_LeavesAnOwnedDeliveryAlone:
-// terminal write takes ownership like every other recovery write, so a
+// the terminal write takes ownership like every other recovery write, so
-// delivery the engine still holds is not failed underneath its worker.
+// a delivery the engine still holds is not failed underneath its worker.
-func TestRecoverPending_TargetDeleted_LeavesAnOwnedDeliveryAlone(
+func TestRecoverPendingDeliveries_TargetDeleted_LeavesAnOwnedDeliveryAlone(
 	t *testing.T,
 ) {
 	t.Parallel()
@@ -620,7 +620,7 @@ func TestRecoverPending_TargetDeleted_LeavesAnOwnedDeliveryAlone(
 	require.True(t, s.Engine.ExportRetainDelivery(deliveryID))
 
 	s.Engine.ExportRecoverWebhookDeliveries(
-		context.Background(), s.WebhookID,
+		context.Background(), s.WebhookID, atStart,
 	)
 
 	iAssertStatus(
@@ -675,18 +675,18 @@ func TestFailMissingTarget_LeavesASettledDeliveryAlone(
 	assert.Zero(t, s.Engine.ExportInflightHeld())
 }
 
-// TestSweepPending_TargetDeleted sweeps twice over a batch that also
+// TestRecoverPendingDeliveries_OnTick_TargetDeleted sweeps twice over a
-// holds a healthy stranded delivery. The one whose target is gone is
+// batch that also holds a healthy stranded delivery. The one whose
-// failed once and then left alone; the healthy one is queued by the
+// target is gone is failed once and then left alone; the healthy one is
-// first sweep and not again by the second.
+// queued by the first sweep and not again by the second.
-func TestSweepPending_TargetDeleted(t *testing.T) {
+func TestRecoverPendingDeliveries_OnTick_TargetDeleted(t *testing.T) {
 	t.Parallel()
 
 	liveTargetID := uuid.New().String()
 	s := fSweepSetup(t, liveTargetID, "still-there")
 
 	deliveryID := tSeedDeletedTarget(
-		t, s, "gone-on-pending-sweep", "http://example.com/hook",
+		t, s, "gone-while-pending-on-tick", "http://example.com/hook",
 		database.DeliveryStatusPending,
 	)
 	rAgePending(t, s.WebhookDB, deliveryID)
@@ -703,7 +703,7 @@ func TestSweepPending_TargetDeleted(t *testing.T) {
 
 	ctx := context.Background()
 
-	s.Engine.ExportSweepWebhookRetries(ctx, s.WebhookID)
+	s.Engine.ExportRecoverWebhookDeliveries(ctx, s.WebhookID, onTick)
 
 	tasks := fDrain(s.Engine)
 	require.Len(t, tasks, 1,
@@ -711,7 +711,7 @@ func TestSweepPending_TargetDeleted(t *testing.T) {
 	)
 	assert.Equal(t, healthy.ID, tasks[0].DeliveryID)
 
-	s.Engine.ExportSweepWebhookRetries(ctx, s.WebhookID)
+	s.Engine.ExportRecoverWebhookDeliveries(ctx, s.WebhookID, onTick)
 
 	assert.Empty(t, fDrain(s.Engine),
 		"the second sweep queued a delivery again",
@@ -724,7 +724,7 @@ func TestSweepPending_TargetDeleted(t *testing.T) {
 
 	last := tLastResult(t, s, deliveryID, 2)
 
-	assert.Contains(t, last.Error, "gone-on-pending-sweep")
+	assert.Contains(t, last.Error, "gone-while-pending-on-tick")
 	assert.Contains(t, last.Error, "was deleted")
 }
 
@@ -775,11 +775,11 @@ func TestSendRecoveredDeliveries_TargetMissingFromMap(
 	)
 }
 
-// TestRecoverPending_TargetUnreadable_LeavesDeliveryAlone: a failed
+// TestRecoverPendingDeliveries_TargetUnreadable_LeavesDeliveryAlone: a
-// read of the main database is not a deleted target. Restart recovery
+// failed read of the main database is not a deleted target. At start the
-// holds every pending delivery of the webhook in one batch, so failing
+// recovery routine holds every pending delivery of the webhook in one
-// on this would fail all of them.
+// batch, so failing on this would fail all of them.
-func TestRecoverPending_TargetUnreadable_LeavesDeliveryAlone(
+func TestRecoverPendingDeliveries_TargetUnreadable_LeavesDeliveryAlone(
 	t *testing.T,
 ) {
 	t.Parallel()
@@ -807,7 +807,7 @@ func TestRecoverPending_TargetUnreadable_LeavesDeliveryAlone(
 	require.NoError(t, sqlDB.Close())
 
 	s.Engine.ExportRecoverPendingDeliveries(
-		context.Background(), s.WebhookDB, s.WebhookID,
+		context.Background(), s.WebhookDB, s.WebhookID, atStart,
 	)
 
 	iAssertStatus(

internal/delivery/url_mask_test.go

@@ -2,7 +2,6 @@ package delivery_test
 
 import (
 	"context"
-	"encoding/json"
 	"net/http"
 	"net/http/httptest"
 	"testing"
@@ -71,13 +70,6 @@ func deliverSlackTo(
 	e := testEngine(t, 1)
 	targetID := uuid.New().String()
 
-	slackCfg, err := json.Marshal(
-		delivery.SlackTargetConfig{
-			WebhookURL: webhookURL,
-		},
-	)
-	require.NoError(t, err)
-
 	event := seedEvent(t, db, `{"test":true}`)
 
 	dlv := seedDelivery(
@@ -87,7 +79,7 @@ func deliverSlackTo(
 
 	d := buildSlackDelivery(
 		dlv, event, targetID,
-		"test-slack-mask", string(slackCfg),
+		"test-slack-mask", webhookURL,
 	)
 
 	e.ExportDeliverSlack(context.TODO(), db, d)
@@ -160,13 +152,9 @@ func TestDoHTTPRequest_TransportErrorMasksURL(t *testing.T) {
 
 	e := testEngine(t, 1)
 
-	cfg, err := e.ExportParseHTTPConfig(
-		newHTTPTargetConfig(host + maskSecretPath),
-	)
-	require.NoError(t, err)
-
 	statusCode, _, _, reqErr := e.ExportDoHTTPRequest(
-		context.TODO(), cfg,
+		context.TODO(),
+		&database.Target{URL: host + maskSecretPath},
 		&database.Event{Body: `{"test":true}`},
 	)
 	require.Error(t, reqErr)
@@ -188,7 +176,7 @@ func TestDoHTTPRequest_UnparsableURLIsMasked(t *testing.T) {
 
 	statusCode, _, _, reqErr := e.ExportDoHTTPRequest(
 		context.TODO(),
-		&delivery.HTTPTargetConfig{
+		&database.Target{
 			URL: "https://hooks.example.com" + maskSecretPath + "\n",
 		},
 		&database.Event{},

internal/delivery/user_agent_test.go

@@ -2,7 +2,6 @@ package delivery_test
 
 import (
 	"context"
-	"encoding/json"
 	"net/http"
 	"net/http/httptest"
 	"net/netip"
@@ -59,9 +58,9 @@ func TestUserAgent_IsTheBuildVersion(t *testing.T) {
 
 	statusCode, _, _, err := e.ExportDoHTTPRequest(
 		context.Background(),
-		&delivery.HTTPTargetConfig{
+		&database.Target{
 			URL:     ts.URL,
-			Headers: map[string]string{"User-Agent": "configured/1"},
+			Headers: map[string]string{headerUserAgent: "configured/1"},
 		},
 		&database.Event{Headers: `{"User-Agent":["curl/8"]}`},
 	)
@@ -73,18 +72,13 @@ func TestUserAgent_IsTheBuildVersion(t *testing.T) {
 	db := testWebhookDB(t)
 	targetID := uuid.New().String()
 
-	slackCfg, err := json.Marshal(
-		delivery.SlackTargetConfig{WebhookURL: ts.URL},
-	)
-	require.NoError(t, err)
-
 	event := seedEvent(t, db, `{"action":"test"}`)
 	dlv := seedDelivery(
 		t, db, event.ID, targetID, database.DeliveryStatusPending,
 	)
 
 	e.ExportDeliverSlack(context.Background(), db, buildSlackDelivery(
-		dlv, event, targetID, "test-slack", string(slackCfg),
+		dlv, event, targetID, "test-slack", ts.URL,
 	))
 	require.Len(t, userAgents, 1, "the slack target sent no request")
 	assert.Equal(t, want, <-userAgents, "slack target")

internal/handlers/archive_expiry.go

@@ -1,8 +1,14 @@
 package handlers
 
+import (
+	"strconv"
+	"time"
+)
+
 const (
 	// archiveExpiryNever is the archive expiry that keeps archived
-	// events forever. A stored empty expiry means the same.
+	// events forever. It is stored as an ArchiveExpiry of 0, and an
+	// empty expiry on a form means the same.
 	archiveExpiryNever = "never"
 
 	// tmplKeyArchiveExpiryChoices is the template data key for the
@@ -56,3 +62,19 @@ func archiveExpiryOptions(expiry string) []archiveChoice {
 
 	return append([]archiveChoice{own}, options...)
 }
+
+// formatArchiveExpiry writes a stored ArchiveExpiry the way the
+// expiry select spells its values, so the target edit form starts on
+// the stored choice: never for 0, a whole number of hours as "720h",
+// and anything else as Go writes a duration, which the form accepts
+// back unchanged.
+func formatArchiveExpiry(expiry time.Duration) string {
+	switch {
+	case expiry == 0:
+		return archiveExpiryNever
+	case expiry%time.Hour == 0:
+		return strconv.FormatInt(int64(expiry/time.Hour), 10) + "h"
+	default:
+		return expiry.String()
+	}
+}

internal/handlers/archive_expiry_test.go

@@ -7,6 +7,7 @@ import (
 	"regexp"
 	"strings"
 	"testing"
+	"time"
 
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
@@ -94,14 +95,18 @@ func TestArchiveExpiryChoices(t *testing.T) {
 
 	env := setupSourceTest(t)
 
-	choices := []struct{ value, shown string }{
+	choices := []struct {
-		{expiryNever, expiryNever},
+		value  string
-		{"1h", "1 hour"},
+		stored time.Duration
-		{"12h", "12 hours"},
+		shown  string
-		{"24h", "1 day"},
+	}{
-		{"720h", "30 days"},
+		{expiryNever, 0, expiryNever},
-		{"2160h", "90 days"},
+		{"1h", time.Hour, "1 hour"},
-		{"8760h", "365 days"},
+		{"12h", 12 * time.Hour, "12 hours"},
+		{"24h", 24 * time.Hour, "1 day"},
+		{"720h", 720 * time.Hour, "30 days"},
+		{"2160h", 2160 * time.Hour, "90 days"},
+		{"8760h", 8760 * time.Hour, "365 days"},
 	}
 
 	for _, choice := range choices {
@@ -122,9 +127,7 @@ func TestArchiveExpiryChoices(t *testing.T) {
 
 			targets := targetsForWebhook(t, env.db, webhook.ID)
 			require.Len(t, targets, 1)
-			assert.JSONEq(
+			assert.Equal(t, choice.stored, targets[0].ArchiveExpiry)
-				t, `{"expiry":"`+choice.value+`"}`, targets[0].Config,
-			)
 
 			assert.Equal(
 				t, []string{choice.shown},
@@ -138,7 +141,7 @@ func TestArchiveExpiryChoices(t *testing.T) {
 }
 
 // TestArchiveExpiryEditStartsOnStoredValue checks the edit form of a
-// database target whose stored expiry is empty, which selects never,
+// database target whose stored expiry is 0, which selects never,
 // and of one whose expiry is not one of the choices, which is listed
 // first as its own selected entry and saved unchanged.
 func TestArchiveExpiryEditStartsOnStoredValue(t *testing.T) {
@@ -148,7 +151,8 @@ func TestArchiveExpiryEditStartsOnStoredValue(t *testing.T) {
 
 	webhook := seedWebhookWithRetention(t, env.db, 30)
 	empty := seedConfiguredTarget(
-		t, env.db, webhook.ID, database.TargetTypeDatabase, "",
+		t, env.db, webhook.ID, database.TargetTypeDatabase,
+		database.Target{},
 	)
 
 	_, selected := expirySelected(t, env, webhook.ID, empty.ID)
@@ -157,7 +161,7 @@ func TestArchiveExpiryEditStartsOnStoredValue(t *testing.T) {
 	webhook = seedWebhookWithRetention(t, env.db, 30)
 	unlisted := seedConfiguredTarget(
 		t, env.db, webhook.ID, database.TargetTypeDatabase,
-		`{"expiry":"36h"}`,
+		database.Target{ArchiveExpiry: 36 * time.Hour},
 	)
 
 	assert.Equal(t, []string{"36 hours"}, expiryShown(t, env, webhook.ID))
@@ -179,7 +183,7 @@ func TestArchiveExpiryEditStartsOnStoredValue(t *testing.T) {
 
 	w := submitTargetEdit(env, webhook.ID, unlisted.ID, form)
 	require.Equal(t, http.StatusSeeOther, w.Code, w.Body.String())
-	assert.JSONEq(
+	assert.Equal(
-		t, `{"expiry":"36h"}`, storedTarget(t, env, unlisted.ID).Config,
+		t, 36*time.Hour, storedTarget(t, env, unlisted.ID).ArchiveExpiry,
 	)
 }

internal/handlers/archive_rotation_test.go

@@ -16,8 +16,12 @@ import (
 	"sneak.berlin/go/webhooker/internal/database"
 )
 
-// rotationNone is the archive rotation that keeps one file.
+// The archive rotations these tests store: none keeps one file.
-const rotationNone = "none"
+const (
+	rotationNone   = "none"
+	rotationDaily  = "daily"
+	rotationHourly = "hourly"
+)
 
 // rotationShown returns the archive rotations the webhook page's
 // target list shows.
@@ -41,7 +45,9 @@ func TestArchiveRotationChoices(t *testing.T) {
 
 	env := setupSourceTest(t)
 
-	for _, rotation := range []string{rotationNone, "monthly", "daily", "hourly"} {
+	for _, rotation := range []string{
+		rotationNone, "monthly", rotationDaily, rotationHourly,
+	} {
 		t.Run(rotation, func(t *testing.T) {
 			t.Parallel()
 
@@ -60,10 +66,8 @@ func TestArchiveRotationChoices(t *testing.T) {
 
 			targets := targetsForWebhook(t, env.db, webhook.ID)
 			require.Len(t, targets, 1)
-			assert.JSONEq(t,
+			assert.Equal(t, 720*time.Hour, targets[0].ArchiveExpiry)
-				`{"expiry":"720h","rotation":"`+rotation+`"}`,
+			assert.Equal(t, rotation, targets[0].ArchiveRotation)
-				targets[0].Config,
-			)
 
 			assert.Equal(t,
 				[]string{rotation}, rotationShown(t, env, webhook.ID))
@@ -78,26 +82,37 @@ func TestArchiveRotationChoices(t *testing.T) {
 
 			w = submitTargetEdit(env, webhook.ID, targets[0].ID, form)
 			require.Equal(t, http.StatusSeeOther, w.Code, w.Body.String())
-			assert.JSONEq(t,
+
-				`{"expiry":"720h","rotation":"hourly"}`,
+			stored := storedTarget(t, env, targets[0].ID)
-				storedTarget(t, env, targets[0].ID).Config,
+			assert.Equal(t, 720*time.Hour, stored.ArchiveExpiry)
-			)
+			assert.Equal(t, rotationHourly, stored.ArchiveRotation)
 		})
 	}
 }
 
-// TestArchiveRotationEditStartsOnNone checks the edit form of a
+// TestArchiveRotationEditStartsOnNone checks that a database target
-// database target with no rotation stored starts on none.
+// added with no rotation is stored with none and shown with none, and
+// that its edit form starts on none.
 func TestArchiveRotationEditStartsOnNone(t *testing.T) {
 	t.Parallel()
 
 	env := setupSourceTest(t)
 	webhook := seedWebhookWithRetention(t, env.db, 30)
-	target := seedConfiguredTarget(
-		t, env.db, webhook.ID, database.TargetTypeDatabase, "",
-	)
 
-	page := targetEditPage(t, env, webhook.ID, target.ID)
+	form := url.Values{}
+	form.Set("name", "archive")
+	form.Set("type", string(database.TargetTypeDatabase))
+
+	w := serveTarget(
+		env, http.MethodPost, "/hook/"+webhook.ID+"/targets", form,
+	)
+	require.Equal(t, http.StatusSeeOther, w.Code, w.Body.String())
+
+	targets := targetsForWebhook(t, env.db, webhook.ID)
+	require.Len(t, targets, 1)
+	assert.Equal(t, rotationNone, targets[0].ArchiveRotation)
+
+	page := targetEditPage(t, env, webhook.ID, targets[0].ID)
 	assert.Equal(t, []string{rotationNone}, selectedIn(page, "rotation"))
 	assert.Equal(t, []string{rotationNone}, rotationShown(t, env, webhook.ID))
 }
@@ -125,7 +140,7 @@ func TestArchiveRotationRefused(t *testing.T) {
 
 	target := seedConfiguredTarget(
 		t, env.db, webhook.ID, database.TargetTypeDatabase,
-		`{"rotation":"daily"}`,
+		database.Target{ArchiveRotation: rotationDaily},
 	)
 
 	form.Del("type")
@@ -133,8 +148,8 @@ func TestArchiveRotationRefused(t *testing.T) {
 	w = submitTargetEdit(env, webhook.ID, target.ID, form)
 	assert.Equal(t, http.StatusBadRequest, w.Code)
 	assert.Contains(t, w.Body.String(), "Invalid archive rotation")
-	assert.JSONEq(t,
+	assert.Equal(
-		`{"rotation":"daily"}`, storedTarget(t, env, target.ID).Config,
+		t, rotationDaily, storedTarget(t, env, target.ID).ArchiveRotation,
 	)
 }
 
@@ -161,9 +176,8 @@ func TestHandleSourceCreateSubmit_ArchiveRotation(t *testing.T) {
 
 	targets := targetsForWebhook(t, env.db, webhook.ID)
 	require.Len(t, targets, 1)
-	assert.JSONEq(t,
+	assert.Equal(t, 720*time.Hour, targets[0].ArchiveExpiry)
-		`{"expiry":"720h","rotation":"daily"}`, targets[0].Config,
+	assert.Equal(t, rotationDaily, targets[0].ArchiveRotation)
-	)
 }
 
 // TestArchiveFileView_Rotated describes a daily target's archive files
@@ -178,7 +192,7 @@ func TestArchiveFileView_Rotated(t *testing.T) {
 	webhook := seedWebhookWithRetention(t, env.db, 30)
 	target := seedConfiguredTarget(
 		t, env.db, webhook.ID, database.TargetTypeDatabase,
-		`{"rotation":"daily"}`,
+		database.Target{ArchiveRotation: rotationDaily},
 	)
 
 	path := archive.Path(env.dbMgr, &webhook, target)

internal/handlers/delivery_replay.go

@@ -5,9 +5,7 @@ import (
 
 	"github.com/go-chi/chi"
 	"gorm.io/gorm"
-	"gorm.io/gorm/clause"
 	"sneak.berlin/go/webhooker/internal/database"
-	"sneak.berlin/go/webhooker/internal/delivery"
 )
 
 // The outcomes of a replay POST, as the notice codes its redirect
@@ -46,12 +44,12 @@ const (
 // HandleDeliveryReplay re-sends a finished delivery's event to its
 // target.
 //
-// A replay never touches the delivery it repeats. It creates a NEW
+// A replay never touches the delivery it repeats. The delivery engine
-// pending delivery row for the same event and target and hands it to
+// creates a NEW pending delivery row for the same event and target and
-// the delivery engine through the same Notifier the receiver uses, so
+// queues it as it queues the receiver's, so the original's status,
-// the original's status, attempts and timestamps stand as the record
+// attempts and timestamps stand as the record of what actually
-// of what actually happened, and the replay is retried, SSRF-guarded
+// happened, and the replay is retried, SSRF-guarded and circuit-broken
-// and circuit-broken exactly as a first attempt is.
+// exactly as a first attempt is.
 //
 // What is re-sent is the stored EVENT body, never the response the
 // original delivery received.
@@ -145,7 +143,8 @@ func (h *Handlers) loadReplaySource(
 	return &original, true
 }
 
-// queueReplay writes the new delivery and hands it to the engine.
+// queueReplay has the delivery engine create and queue the new
+// delivery, unless an earlier replay is still in flight.
 func (h *Handlers) queueReplay(
 	w http.ResponseWriter,
 	r *http.Request,
@@ -171,18 +170,8 @@ func (h *Handlers) queueReplay(
 		return
 	}
 
-	var event database.Event
+	deliveryID, err := h.engine.CreateReplay(
-
+		webhook.ID, original.EventID, target,
-	err = webhookDB.
-		First(&event, "id = ?", original.EventID).Error
-	if err != nil {
-		h.serverError(w, r, "failed to load event for replay", err)
-
-		return
-	}
-
-	task, err := createReplayDelivery(
-		webhookDB, webhook.ID, &event, target,
 	)
 	if err != nil {
 		h.serverError(
@@ -193,15 +182,14 @@ func (h *Handlers) queueReplay(
 	}
 
 	h.mtr.DeliveryReplayed(target.Type)
-	h.notifier.Notify([]delivery.Task{task})
 
 	h.log.Info(
 		"delivery replay queued",
 		"webhook_id", webhook.ID,
-		"event_id", event.ID,
+		"event_id", original.EventID,
 		"target_id", target.ID,
 		"replayed_delivery_id", original.ID,
-		"delivery_id", task.DeliveryID,
+		"delivery_id", deliveryID,
 	)
 
 	redirectToEventLog(w, r, webhook, replayQueued)
@@ -263,72 +251,6 @@ func countInFlightDeliveries(
 	return count, err
 }
 
-// createReplayDelivery writes the new pending delivery row, adds it to
-// its target's totals in the same transaction, and returns the task
-// that carries it to the delivery engine.
-//
-// The row is written with associations omitted, and neither Event nor
-// Target is populated on it: GORM's SaveBeforeAssociations would
-// otherwise upsert the whole target row — plaintext config, which for a
-// Slack target is the credential — into the per-webhook event database.
-// See https://git.eeqj.de/sneak/webhooker/issues/206.
-func createReplayDelivery(
-	webhookDB *gorm.DB,
-	webhookID string,
-	event *database.Event,
-	target *database.Target,
-) (delivery.Task, error) {
-	dlv := &database.Delivery{
-		EventID:  event.ID,
-		TargetID: target.ID,
-		Status:   database.DeliveryStatusPending,
-		Replay:   true,
-	}
-
-	err := webhookDB.Transaction(func(tx *gorm.DB) error {
-		err := tx.Omit(clause.Associations).Create(dlv).Error
-		if err != nil {
-			return err
-		}
-
-		return database.AddTargetTotals(tx, database.TargetTotals{
-			TargetID: dlv.TargetID, Deliveries: 1,
-		})
-	})
-	if err != nil {
-		return delivery.Task{}, err
-	}
-
-	return delivery.Task{
-		DeliveryID:   dlv.ID,
-		EventID:      event.ID,
-		WebhookID:    webhookID,
-		EntrypointID: event.EntrypointID,
-		TargetID:     target.ID,
-		TargetName:   target.Name,
-		TargetType:   target.Type,
-		TargetConfig: target.Config,
-		MaxAttempts:  target.MaxAttempts,
-		Method:       event.Method,
-		RawQuery:     event.RawQuery,
-		Headers:      event.Headers,
-		ContentType:  event.ContentType,
-		Body:         replayBody(event.Body),
-		AttemptNum:   1,
-	}, nil
-}
-
-// replayBody returns the stored event body for a replay task to carry
-// inline, or nil when it is large enough that the engine should fetch
-// it from the per-webhook database instead.
-func replayBody(body string) *string {
-	if len(body) >= delivery.MaxInlineBodySize {
-		return nil
-	}
-
-	return &body
-}
-
 // redirectToEventLog redirects a replay or resubmit back to the event
 // log it was triggered from, carrying the outcome as its notice. A
 // Replay form carries the list it was pressed in as show, so a replay

internal/handlers/delivery_replay_test.go

@@ -12,7 +12,6 @@ import (
 	"gorm.io/gorm"
 	"gorm.io/gorm/clause"
 	"sneak.berlin/go/webhooker/internal/database"
-	"sneak.berlin/go/webhooker/internal/delivery"
 	"sneak.berlin/go/webhooker/internal/handlers"
 	"sneak.berlin/go/webhooker/internal/session"
 )
@@ -23,7 +22,7 @@ const paramDeliveryID = "deliveryID"
 
 // replayTargetURL is a public destination, so a target configured with
 // it is one the SSRF guard would accept. Nothing in these tests
-// dispatches to it: the notifier is recorded, not run.
+// dispatches to it: the delivery engine is never started.
 const replayTargetURL = "http://93.184.216.34/hook"
 
 // replayEventQuery is the query string a seeded event arrived with.
@@ -163,14 +162,8 @@ func postReplay(
 
 // TestHandleDeliveryReplay_AppendsDeliveryAndLeavesOriginal is the
 // core requirement: replaying a failed delivery succeeds, appends a
-// new delivery, and leaves the original row and its recorded attempt
+// new delivery marked as a replay, and leaves the original row and its
-// exactly as they were.
+// recorded attempt exactly as they were.
-//
-// It also pins the two things a replay would be wrong to get from the
-// original: the task carries the target's CURRENT configuration, which
-// this test changes between the failure and the replay, and it carries
-// the stored EVENT body rather than anything the failed attempt
-// received back.
 func TestHandleDeliveryReplay_AppendsDeliveryAndLeavesOriginal(
 	t *testing.T,
 ) {
@@ -181,10 +174,9 @@ func TestHandleDeliveryReplay_AppendsDeliveryAndLeavesOriginal(
 		sess  *session.Session
 		db    *database.Database
 		dbMgr *database.WebhookDBManager
-		notif *recordingNotifier
 	)
 
-	app := newTestApp(t, &h, &sess, &db, &dbMgr, &notif)
+	app := newTestApp(t, &h, &sess, &db, &dbMgr)
 	app.RequireStart()
 
 	t.Cleanup(app.RequireStop)
@@ -192,7 +184,7 @@ func TestHandleDeliveryReplay_AppendsDeliveryAndLeavesOriginal(
 	wh := seedWebhook(t, db)
 	tgt := seedConfiguredTarget(
 		t, db, wh.ID, database.TargetTypeHTTP,
-		`{"url":"`+replayTargetURL+`"}`,
+		database.Target{URL: replayTargetURL},
 	)
 
 	event, original := seedFailedDelivery(
@@ -204,15 +196,6 @@ func TestHandleDeliveryReplay_AppendsDeliveryAndLeavesOriginal(
 
 	before := loadDelivery(t, webhookDB, original.ID)
 
-	// The operator fixes the destination, which is the whole reason
-	// to replay. The replay must use this, not the config the
-	// original delivery ran against.
-	const fixedConfig = `{"url":"http://93.184.216.34/fixed"}`
-
-	require.NoError(t, db.DB().Model(&database.Target{}).
-		Where("id = ?", tgt.ID).
-		Update("config", fixedConfig).Error)
-
 	w := postReplay(t, h, sess, wh.ID, original.ID)
 
 	require.Equal(t, http.StatusSeeOther, w.Code)
@@ -234,14 +217,9 @@ func TestHandleDeliveryReplay_AppendsDeliveryAndLeavesOriginal(
 	assert.Equal(
 		t, database.DeliveryStatusPending, replayed.Status,
 	)
+	assert.True(t, replayed.Replay)
 
 	assertDeliveryUntouched(t, webhookDB, before)
-
-	tasks := notif.Tasks()
-	require.Len(t, tasks, 1)
-	assertReplayTask(
-		t, tasks[0], wh.ID, event, tgt, replayed.ID, fixedConfig,
-	)
 	assertNoLeakedTarget(t, webhookDB)
 }
 
@@ -275,45 +253,6 @@ func assertDeliveryUntouched(
 	)
 }
 
-// assertReplayTask proves the task handed to the delivery engine is
-// the one the receiver would build for this event and this target, and
-// that it carries wantConfig — the target's configuration as it stands
-// now rather than as the original delivery ran against it.
-func assertReplayTask(
-	t *testing.T,
-	task delivery.Task,
-	webhookID string,
-	event *database.Event,
-	target *database.Target,
-	wantDeliveryID, wantConfig string,
-) {
-	t.Helper()
-
-	assert.Equal(t, wantDeliveryID, task.DeliveryID)
-	assert.Equal(t, event.ID, task.EventID)
-	assert.Equal(t, webhookID, task.WebhookID)
-	assert.Equal(t, event.EntrypointID, task.EntrypointID)
-	assert.Equal(t, target.ID, task.TargetID)
-	assert.Equal(t, target.Type, task.TargetType)
-	assert.JSONEq(
-		t, wantConfig, task.TargetConfig,
-		"replay must use the target's current configuration",
-	)
-	assert.Equal(t, event.Method, task.Method)
-	assert.Equal(
-		t, replayEventQuery, task.RawQuery,
-		"replay re-sends the stored query string",
-	)
-	assert.Equal(t, event.Headers, task.Headers)
-	assert.Equal(t, event.ContentType, task.ContentType)
-	assert.Equal(t, 1, task.AttemptNum)
-	require.NotNil(t, task.Body)
-	assert.Equal(
-		t, event.Body, *task.Body,
-		"replay re-sends the stored event body",
-	)
-}
-
 // assertNoLeakedTarget proves the per-webhook database holds no
 // target: an association write would have upserted the whole target,
 // plaintext config and all, into the event database. See
@@ -327,9 +266,49 @@ func assertNoLeakedTarget(t *testing.T, webhookDB *gorm.DB) {
 	)
 }
 
+// TestHandleDeliveryReplay_FailedStoreIsAnError proves a replay the
+// engine cannot store answers with the 500 error page and adds no
+// delivery.
+func TestHandleDeliveryReplay_FailedStoreIsAnError(t *testing.T) {
+	t.Parallel()
+
+	var (
+		h     *handlers.Handlers
+		sess  *session.Session
+		db    *database.Database
+		dbMgr *database.WebhookDBManager
+	)
+
+	app := newTestApp(t, &h, &sess, &db, &dbMgr)
+	app.RequireStart()
+
+	t.Cleanup(app.RequireStop)
+
+	wh := seedWebhook(t, db)
+	tgt := seedConfiguredTarget(
+		t, db, wh.ID, database.TargetTypeHTTP,
+		database.Target{URL: replayTargetURL},
+	)
+
+	event, original := seedFailedDelivery(t, dbMgr, wh.ID, tgt.ID)
+
+	// Without its target totals table the webhook's database refuses
+	// the totals write, which comes after the delivery row.
+	webhookDB, err := dbMgr.GetDB(wh.ID)
+	require.NoError(t, err)
+	require.NoError(t,
+		webhookDB.Migrator().DropTable(&database.TargetTotals{}))
+
+	w := postReplay(t, h, sess, wh.ID, original.ID)
+
+	assert.Equal(t, http.StatusInternalServerError, w.Code)
+	assert.Contains(t, w.Body.String(), "500 Internal Server Error")
+	assert.Len(t, listDeliveries(t, webhookDB, event.ID), 1)
+}
+
 // TestHandleDeliveryReplay_RefusesDeletedTarget proves the required
 // refusal: a target deleted since the delivery ran is reported as
-// deleted rather than erroring, and nothing is created or queued.
+// deleted rather than erroring, and nothing is created.
 func TestHandleDeliveryReplay_RefusesDeletedTarget(t *testing.T) {
 	t.Parallel()
 
@@ -338,10 +317,9 @@ func TestHandleDeliveryReplay_RefusesDeletedTarget(t *testing.T) {
 		sess  *session.Session
 		db    *database.Database
 		dbMgr *database.WebhookDBManager
-		notif *recordingNotifier
 	)
 
-	app := newTestApp(t, &h, &sess, &db, &dbMgr, &notif)
+	app := newTestApp(t, &h, &sess, &db, &dbMgr)
 	app.RequireStart()
 
 	t.Cleanup(app.RequireStop)
@@ -349,7 +327,7 @@ func TestHandleDeliveryReplay_RefusesDeletedTarget(t *testing.T) {
 	wh := seedWebhook(t, db)
 	tgt := seedConfiguredTarget(
 		t, db, wh.ID, database.TargetTypeHTTP,
-		`{"url":"`+replayTargetURL+`"}`,
+		database.Target{URL: replayTargetURL},
 	)
 
 	event, original := seedFailedDelivery(
@@ -377,10 +355,6 @@ func TestHandleDeliveryReplay_RefusesDeletedTarget(t *testing.T) {
 		t, listDeliveries(t, webhookDB, event.ID), 1,
 		"a refused replay must create no delivery",
 	)
-	assert.Empty(
-		t, notif.Tasks(),
-		"a refused replay must queue nothing",
-	)
 
 	// The refusal is specific, which is why the target is looked up
 	// including soft-deleted rows: an id that never named a target
@@ -413,10 +387,9 @@ func TestHandleDeliveryReplay_RefusesWhileEarlierReplayInFlight(
 		sess  *session.Session
 		db    *database.Database
 		dbMgr *database.WebhookDBManager
-		notif *recordingNotifier
 	)
 
-	app := newTestApp(t, &h, &sess, &db, &dbMgr, &notif)
+	app := newTestApp(t, &h, &sess, &db, &dbMgr)
 	app.RequireStart()
 
 	t.Cleanup(app.RequireStop)
@@ -424,7 +397,7 @@ func TestHandleDeliveryReplay_RefusesWhileEarlierReplayInFlight(
 	wh := seedWebhook(t, db)
 	tgt := seedConfiguredTarget(
 		t, db, wh.ID, database.TargetTypeHTTP,
-		`{"url":"`+replayTargetURL+`"}`,
+		database.Target{URL: replayTargetURL},
 	)
 
 	event, original := seedFailedDelivery(
@@ -454,10 +427,6 @@ func TestHandleDeliveryReplay_RefusesWhileEarlierReplayInFlight(
 		t, listDeliveries(t, webhookDB, event.ID), 2,
 		"the refused second replay must add nothing",
 	)
-	assert.Len(
-		t, notif.Tasks(), 1,
-		"only the first replay reaches the delivery engine",
-	)
 
 	// A delivery the engine has not finished is not replayable
 	// either, which is the same rule seen from the other side.
@@ -498,7 +467,7 @@ func TestHandleDeliveryReplay_ReturnsToTheListItWasPressedIn(
 	wh := seedWebhook(t, db)
 	tgt := seedConfiguredTarget(
 		t, db, wh.ID, database.TargetTypeHTTP,
-		`{"url":"`+replayTargetURL+`"}`,
+		database.Target{URL: replayTargetURL},
 	)
 
 	_, original := seedFailedDelivery(t, dbMgr, wh.ID, tgt.ID)
@@ -556,7 +525,7 @@ func TestHandleSourceLogs_RendersReplayControlAndBanner(t *testing.T) {
 	wh := seedWebhook(t, db)
 	tgt := seedConfiguredTarget(
 		t, db, wh.ID, database.TargetTypeHTTP,
-		`{"url":"`+replayTargetURL+`"}`,
+		database.Target{URL: replayTargetURL},
 	)
 
 	_, original := seedFailedDelivery(t, dbMgr, wh.ID, tgt.ID)
@@ -615,7 +584,7 @@ func TestHandleDeliveryReplay_LabelsTheReplay(t *testing.T) {
 	wh := seedWebhook(t, db)
 	tgt := seedConfiguredTarget(
 		t, db, wh.ID, database.TargetTypeHTTP,
-		`{"url":"`+replayTargetURL+`"}`,
+		database.Target{URL: replayTargetURL},
 	)
 
 	event, original := seedFailedDelivery(t, dbMgr, wh.ID, tgt.ID)

internal/handlers/delivery_result_view_test.go

@@ -86,12 +86,12 @@ func seedFailedDeliveryWithResponse(
 }
 
 // seedFailureAndRender seeds a failed delivery against a
-// target of the given type and config, and returns the
+// target of the given type and URL, and returns the
 // rendered event log page.
 func seedFailureAndRender(
 	t *testing.T,
 	targetType database.TargetType,
-	config, responseBody string,
+	targetURL, responseBody string,
 ) string {
 	t.Helper()
 
@@ -109,7 +109,7 @@ func seedFailureAndRender(
 
 	wh := seedWebhook(t, db)
 	tgt := seedConfiguredTarget(
-		t, db, wh.ID, targetType, config,
+		t, db, wh.ID, targetType, database.Target{URL: targetURL},
 	)
 
 	seedFailedDeliveryWithResponse(
@@ -129,7 +129,7 @@ func TestHandleSourceLogs_RendersFailedAttempt(t *testing.T) {
 	body := seedFailureAndRender(
 		t,
 		database.TargetTypeHTTP,
-		`{"url":"https://example.com/hook/abc"}`,
+		"https://example.com/hook/abc",
 		"upstream exploded",
 	)
 
@@ -167,7 +167,7 @@ func TestHandleSourceLogs_EscapesResponseBody(t *testing.T) {
 	body := seedFailureAndRender(
 		t,
 		database.TargetTypeHTTP,
-		`{"url":"https://example.com/hook/abc"}`,
+		"https://example.com/hook/abc",
 		payload,
 	)
 
@@ -189,7 +189,7 @@ func TestHandleSourceLogs_RedactsCredentialEchoedInResponse(
 	body := seedFailureAndRender(
 		t,
 		database.TargetTypeSlack,
-		`{"webhookUrl":"`+slackWebhookURL+`"}`,
+		slackWebhookURL,
 		"no_service: "+slackWebhookURL,
 	)
 
@@ -228,7 +228,7 @@ func TestHandleSourceLogs_RedactsCredentialEchoedInError(
 	tgt := seedConfiguredTarget(
 		t, db, wh.ID,
 		database.TargetTypeSlack,
-		`{"webhookUrl":"`+slackWebhookURL+`"}`,
+		database.Target{URL: slackWebhookURL},
 	)
 
 	dlv := seedFailedDeliveryWithResponse(t, dbMgr, wh.ID, tgt.ID, "")
@@ -300,7 +300,7 @@ func TestHandleSourceLogs_RedactsCredentialSeveredByTheEngineCut(
 	body := seedFailureAndRender(
 		t,
 		database.TargetTypeSlack,
-		`{"webhookUrl":"`+slackWebhookURL+`"}`,
+		slackWebhookURL,
 		stored,
 	)
 
@@ -335,7 +335,7 @@ func TestHandleSourceLogs_RedactsCredentialSeveredBySQLCut(
 	body := seedFailureAndRender(
 		t,
 		database.TargetTypeSlack,
-		`{"webhookUrl":"`+slackWebhookURL+`"}`,
+		slackWebhookURL,
 		stored,
 	)
 
@@ -373,7 +373,7 @@ func TestHandleSourceLogs_RedactsForSoftDeletedTarget(
 	tgt := seedConfiguredTarget(
 		t, db, wh.ID,
 		database.TargetTypeSlack,
-		`{"webhookUrl":"`+slackWebhookURL+`"}`,
+		database.Target{URL: slackWebhookURL},
 	)
 
 	seedFailedDeliveryWithResponse(
@@ -413,7 +413,7 @@ func TestHandleSourceLogs_BoundsRenderedAttempts(t *testing.T) {
 
 	wh := seedWebhook(t, db)
 	tgt := seedConfiguredTarget(
-		t, db, wh.ID, database.TargetTypeLog, "",
+		t, db, wh.ID, database.TargetTypeLog, database.Target{},
 	)
 
 	dlv := seedFailedDeliveryWithResponse(t, dbMgr, wh.ID, tgt.ID, "")
@@ -480,7 +480,7 @@ func TestHandleSourceLogs_BoundsOversizeResponse(t *testing.T) {
 
 	wh := seedWebhook(t, db)
 	tgt := seedConfiguredTarget(
-		t, db, wh.ID, database.TargetTypeLog, "",
+		t, db, wh.ID, database.TargetTypeLog, database.Target{},
 	)
 
 	stored := strings.Repeat("A", responseCap*4) + tail

internal/handlers/event_log.go

@@ -13,8 +13,8 @@ import (
 
 // DeliveryView is the display-safe projection of a delivery
 // for the event log page. Its target is a TargetView, so the
-// stored configuration blob — which holds the target's
+// target's URL and headers — which hold the target's
-// credential — has no path to the template.
+// credential — have no path to the template.
 type DeliveryView struct {
 	ID     string
 	Status database.DeliveryStatus
@@ -126,7 +126,7 @@ func (h *Handlers) HandleSourceLogs() http.HandlerFunc {
 // loadTargetMap loads targets into a map of display-safe
 // views keyed by target ID, each paired with its redactor.
 // The projection happens here so that no caller can hand a
-// raw target, configuration blob and all, to a template: the
+// raw target, URL and headers and all, to a template: the
 // raw rows do not leave this function.
 //
 // The load is Unscoped because deleting a target only soft

internal/handlers/event_resubmit.go

@@ -171,37 +171,29 @@ func loadResubmitSource(
 	return src, true, nil
 }
 
-// queueResubmit stores the copy and fans it out to the webhook's
+// queueResubmit has the delivery engine store the copy, with a delivery
-// active targets.
+// for each of the webhook's active targets as they stand now, through
+// the same StoreEvent the receiver uses. The one difference is that the
+// copy leaves its entrypoint's last event as it is, since it did not
+// arrive on that URL.
 func (h *Handlers) queueResubmit(
 	w http.ResponseWriter,
 	r *http.Request,
 	webhook database.Webhook,
 	src resubmitSource,
 ) {
-	// The receiver's own query, run now: an active target created
+	event := &database.Event{
-	// after the original event arrived is included, and an
+		WebhookID:         webhook.ID,
-	// inactive one is skipped rather than refused.
+		EntrypointID:      src.EntrypointID,
-	targets, err := h.loadActiveTargets(webhook.ID)
+		Method:            src.Method,
-	if err != nil {
+		RawQuery:          src.RawQuery,
-		h.serverError(w, r, "failed to query targets", err)
+		Headers:           src.Headers,
-
+		ContentType:       src.ContentType,
-		return
+		Body:              string(src.Body),
+		ResubmittedFromID: &src.ID,
 	}
 
-	event, tasks, err := h.createAndFanOut(
+	deliveries, err := h.engine.StoreEvent(event)
-		eventSource{
-			WebhookID:         webhook.ID,
-			EntrypointID:      src.EntrypointID,
-			Method:            src.Method,
-			RawQuery:          src.RawQuery,
-			HeadersJSON:       src.Headers,
-			ContentType:       src.ContentType,
-			Body:              src.Body,
-			ResubmittedFromID: &src.ID,
-		},
-		targets,
-	)
 	if err != nil {
 		h.serverError(w, r, "failed to store resubmitted event", err)
 
@@ -215,11 +207,11 @@ func (h *Handlers) queueResubmit(
 		"webhook_id", webhook.ID,
 		"event_id", event.ID,
 		"resubmitted_from_id", src.ID,
-		"target_count", len(tasks),
+		"target_count", deliveries,
 	)
 
 	code := resubmitQueued
-	if len(tasks) == 0 {
+	if deliveries == 0 {
 		code = resubmitNoTargets
 	}
 

internal/handlers/event_resubmit_test.go

@@ -19,7 +19,7 @@ import (
 
 // resubmitTargetURL is a public destination, so a target configured
 // with it is one the SSRF guard would accept. Nothing in these tests
-// dispatches to it: the notifier is recorded, not run.
+// dispatches to it: the delivery engine is never started.
 const resubmitTargetURL = "http://93.184.216.34/hook"
 
 // resubmitEventHeaders and resubmitEventQuery are the stored header
@@ -134,10 +134,9 @@ func TestHandleEventResubmit_DeliversToTargetCreatedAfterTheEvent(
 		sess  *session.Session
 		db    *database.Database
 		dbMgr *database.WebhookDBManager
-		notif *recordingNotifier
 	)
 
-	app := newTestApp(t, &h, &sess, &db, &dbMgr, &notif)
+	app := newTestApp(t, &h, &sess, &db, &dbMgr)
 	app.RequireStart()
 
 	t.Cleanup(app.RequireStop)
@@ -151,7 +150,7 @@ func TestHandleEventResubmit_DeliversToTargetCreatedAfterTheEvent(
 	// captured. It has no prior delivery of anything.
 	tgt := seedConfiguredTarget(
 		t, db, wh.ID, database.TargetTypeHTTP,
-		`{"url":"`+resubmitTargetURL+`"}`,
+		database.Target{URL: resubmitTargetURL},
 	)
 
 	w := postResubmit(t, h, sess, wh.ID, original.ID)
@@ -189,11 +188,6 @@ func TestHandleEventResubmit_DeliversToTargetCreatedAfterTheEvent(
 		t, database.DeliveryStatusPending, deliveries[0].Status,
 	)
 
-	tasks := notif.Tasks()
-	require.Len(t, tasks, 1)
-	assert.Equal(t, deliveries[0].ID, tasks[0].DeliveryID)
-	assertResubmitTask(t, tasks[0], wh.ID, &fresh, tgt)
-
 	assertNoLeakedTarget(t, webhookDB)
 }
 
@@ -225,32 +219,6 @@ func assertEventCopy(
 	)
 }
 
-// assertResubmitTask proves the task handed to the delivery engine is
-// the one the receiver would build for the NEW event and this target.
-func assertResubmitTask(
-	t *testing.T,
-	task delivery.Task,
-	webhookID string,
-	fresh *database.Event,
-	target *database.Target,
-) {
-	t.Helper()
-
-	assert.Equal(t, fresh.ID, task.EventID)
-	assert.Equal(t, webhookID, task.WebhookID)
-	assert.Equal(t, fresh.EntrypointID, task.EntrypointID)
-	assert.Equal(t, target.ID, task.TargetID)
-	assert.Equal(t, target.Type, task.TargetType)
-	assert.Equal(t, fresh.Method, task.Method)
-	assert.Equal(t, fresh.RawQuery, task.RawQuery)
-	assert.Equal(t, fresh.Headers, task.Headers)
-	assert.Equal(t, fresh.ContentType, task.ContentType)
-	assert.Equal(t, 1, task.AttemptNum)
-
-	require.NotNil(t, task.Body)
-	assert.Equal(t, fresh.Body, *task.Body)
-}
-
 // TestHandleEventResubmit_IsRepeatable proves the requirement replay
 // deliberately does not meet: firing the same captured event at a
 // backend over and over must work, with no in-flight refusal, and each
@@ -263,10 +231,9 @@ func TestHandleEventResubmit_IsRepeatable(t *testing.T) {
 		sess  *session.Session
 		db    *database.Database
 		dbMgr *database.WebhookDBManager
-		notif *recordingNotifier
 	)
 
-	app := newTestApp(t, &h, &sess, &db, &dbMgr, &notif)
+	app := newTestApp(t, &h, &sess, &db, &dbMgr)
 	app.RequireStart()
 
 	t.Cleanup(app.RequireStop)
@@ -274,7 +241,7 @@ func TestHandleEventResubmit_IsRepeatable(t *testing.T) {
 	wh := seedWebhook(t, db)
 	tgt := seedConfiguredTarget(
 		t, db, wh.ID, database.TargetTypeHTTP,
-		`{"url":"`+resubmitTargetURL+`"}`,
+		database.Target{URL: resubmitTargetURL},
 	)
 	original := seedStoredEvent(t, dbMgr, wh.ID, `{"fire":"again"}`)
 
@@ -300,30 +267,18 @@ func TestHandleEventResubmit_IsRepeatable(t *testing.T) {
 	require.NoError(t, err)
 
 	events := listEvents(t, webhookDB)
-	require.Len(t, events, presses+1)
+	require.Len(
+		t, events, presses+1, "each resubmit creates its own event",
+	)
 
-	tasks := notif.Tasks()
+	assert.Empty(
-	require.Len(t, tasks, presses)
+		t, listDeliveries(t, webhookDB, original.ID),
+		"each resubmit delivers its own new event",
+	)
 
-	seen := make(map[string]struct{}, presses)
+	// Every copy has its own delivery, and names the same source
-
+	// event, so twenty presses stay traceable to the one captured
-	for _, task := range tasks {
+	// request.
-		assert.Equal(t, tgt.ID, task.TargetID)
-		assert.NotEqual(
-			t, original.ID, task.EventID,
-			"each resubmit delivers its own new event",
-		)
-
-		_, dup := seen[task.EventID]
-		assert.False(t, dup, "each resubmit creates its own event")
-
-		seen[task.EventID] = struct{}{}
-
-		require.Len(t, listDeliveries(t, webhookDB, task.EventID), 1)
-	}
-
-	// Every copy names the same source event, so twenty presses stay
-	// traceable to the one captured request.
 	for _, e := range events {
 		if e.ID == original.ID {
 			continue
@@ -331,6 +286,10 @@ func TestHandleEventResubmit_IsRepeatable(t *testing.T) {
 
 		require.NotNil(t, e.ResubmittedFromID)
 		assert.Equal(t, original.ID, *e.ResubmittedFromID)
+
+		deliveries := listDeliveries(t, webhookDB, e.ID)
+		require.Len(t, deliveries, 1)
+		assert.Equal(t, tgt.ID, deliveries[0].TargetID)
 	}
 }
 
@@ -346,10 +305,9 @@ func TestHandleEventResubmit_OversizeBodySurvivesIntact(t *testing.T) {
 		sess  *session.Session
 		db    *database.Database
 		dbMgr *database.WebhookDBManager
-		notif *recordingNotifier
 	)
 
-	app := newTestApp(t, &h, &sess, &db, &dbMgr, &notif)
+	app := newTestApp(t, &h, &sess, &db, &dbMgr)
 	app.RequireStart()
 
 	t.Cleanup(app.RequireStop)
@@ -368,7 +326,7 @@ func TestHandleEventResubmit_OversizeBodySurvivesIntact(t *testing.T) {
 	wh := seedWebhook(t, db)
 	seedConfiguredTarget(
 		t, db, wh.ID, database.TargetTypeHTTP,
-		`{"url":"`+resubmitTargetURL+`"}`,
+		database.Target{URL: resubmitTargetURL},
 	)
 	original := seedStoredEvent(t, dbMgr, wh.ID, stored)
 
@@ -385,22 +343,7 @@ func TestHandleEventResubmit_OversizeBodySurvivesIntact(t *testing.T) {
 		t, stored, fresh.Body,
 		"the stored body must be copied byte for byte",
 	)
-
+	assert.Len(t, listDeliveries(t, webhookDB, fresh.ID), 1)
-	tasks := notif.Tasks()
-	require.Len(t, tasks, 1)
-	assert.Nil(
-		t, tasks[0].Body,
-		"a body over the inline limit is fetched from the new "+
-			"event row rather than carried on the task",
-	)
-
-	// The engine's own read of the body, against the new event id:
-	// what it would send is what was stored.
-	var loaded database.Event
-
-	require.NoError(t, webhookDB.Select("body").
-		First(&loaded, "id = ?", tasks[0].EventID).Error)
-	assert.Equal(t, stored, loaded.Body)
 }
 
 // TestHandleEventResubmit_SkipsInactiveTarget proves a deactivated
@@ -414,10 +357,9 @@ func TestHandleEventResubmit_SkipsInactiveTarget(t *testing.T) {
 		sess  *session.Session
 		db    *database.Database
 		dbMgr *database.WebhookDBManager
-		notif *recordingNotifier
 	)
 
-	app := newTestApp(t, &h, &sess, &db, &dbMgr, &notif)
+	app := newTestApp(t, &h, &sess, &db, &dbMgr)
 	app.RequireStart()
 
 	t.Cleanup(app.RequireStop)
@@ -425,11 +367,11 @@ func TestHandleEventResubmit_SkipsInactiveTarget(t *testing.T) {
 	wh := seedWebhook(t, db)
 	active := seedConfiguredTarget(
 		t, db, wh.ID, database.TargetTypeHTTP,
-		`{"url":"`+resubmitTargetURL+`"}`,
+		database.Target{URL: resubmitTargetURL},
 	)
 	off := seedConfiguredTarget(
 		t, db, wh.ID, database.TargetTypeHTTP,
-		`{"url":"`+resubmitTargetURL+`/off"}`,
+		database.Target{URL: resubmitTargetURL + "/off"},
 	)
 
 	require.NoError(t, db.DB().Model(&database.Target{}).
@@ -448,21 +390,19 @@ func TestHandleEventResubmit_SkipsInactiveTarget(t *testing.T) {
 		"an inactive target is skipped, not an error",
 	)
 
-	tasks := notif.Tasks()
-	require.Len(t, tasks, 1)
-	assert.Equal(t, active.ID, tasks[0].TargetID)
-
 	webhookDB, err := dbMgr.GetDB(wh.ID)
 	require.NoError(t, err)
 
 	fresh := theOtherEvent(t, listEvents(t, webhookDB), original.ID)
-	require.Len(t, listDeliveries(t, webhookDB, fresh.ID), 1)
+	deliveries := listDeliveries(t, webhookDB, fresh.ID)
+	require.Len(t, deliveries, 1)
+	assert.Equal(t, active.ID, deliveries[0].TargetID)
 }
 
 // TestHandleEventResubmit_NoActiveTargetsStillStoresEvent proves a
 // source with nothing to deliver to behaves as the receiver does: the
-// event is stored, nothing is queued, and the operator is told so
+// event is stored with no delivery, and the operator is told so rather
-// rather than being shown an error.
+// than being shown an error.
 func TestHandleEventResubmit_NoActiveTargetsStillStoresEvent(
 	t *testing.T,
 ) {
@@ -473,10 +413,9 @@ func TestHandleEventResubmit_NoActiveTargetsStillStoresEvent(
 		sess  *session.Session
 		db    *database.Database
 		dbMgr *database.WebhookDBManager
-		notif *recordingNotifier
 	)
 
-	app := newTestApp(t, &h, &sess, &db, &dbMgr, &notif)
+	app := newTestApp(t, &h, &sess, &db, &dbMgr)
 	app.RequireStart()
 
 	t.Cleanup(app.RequireStop)
@@ -493,12 +432,14 @@ func TestHandleEventResubmit_NoActiveTargetsStillStoresEvent(
 		w.Header().Get("Location"),
 	)
 
-	assert.Empty(t, notif.Tasks())
-
 	webhookDB, err := dbMgr.GetDB(wh.ID)
 	require.NoError(t, err)
 
-	assert.Len(t, listEvents(t, webhookDB), 2)
+	events := listEvents(t, webhookDB)
+	assert.Len(t, events, 2)
+
+	fresh := theOtherEvent(t, events, original.ID)
+	assert.Empty(t, listDeliveries(t, webhookDB, fresh.ID))
 }
 
 // TestHandleEventResubmit_RefusesEventOfAnotherWebhook proves the
@@ -514,10 +455,9 @@ func TestHandleEventResubmit_RefusesEventOfAnotherWebhook(
 		sess  *session.Session
 		db    *database.Database
 		dbMgr *database.WebhookDBManager
-		notif *recordingNotifier
 	)
 
-	app := newTestApp(t, &h, &sess, &db, &dbMgr, &notif)
+	app := newTestApp(t, &h, &sess, &db, &dbMgr)
 	app.RequireStart()
 
 	t.Cleanup(app.RequireStop)
@@ -528,7 +468,7 @@ func TestHandleEventResubmit_RefusesEventOfAnotherWebhook(
 	mine := seedWebhook(t, db)
 	seedConfiguredTarget(
 		t, db, mine.ID, database.TargetTypeHTTP,
-		`{"url":"`+resubmitTargetURL+`"}`,
+		database.Target{URL: resubmitTargetURL},
 	)
 	seedStoredEvent(t, dbMgr, mine.ID, `{"mine":true}`)
 
@@ -548,10 +488,49 @@ func TestHandleEventResubmit_RefusesEventOfAnotherWebhook(
 	w = postResubmit(t, h, sess, mine.ID, "not-a-uuid")
 	assert.Equal(t, http.StatusNotFound, w.Code)
 
-	assert.Empty(
+	for _, webhookID := range []string{theirs.ID, mine.ID} {
-		t, notif.Tasks(),
+		webhookDB, err := dbMgr.GetDB(webhookID)
-		"a refused resubmit must queue nothing",
+		require.NoError(t, err)
+
+		assert.Len(
+			t, listEvents(t, webhookDB), 1,
+			"a refused resubmit must store nothing",
+		)
+	}
+}
+
+// TestHandleEventResubmit_FailedStoreIsAnError proves a copy the engine
+// cannot store answers with the 500 error page and leaves no new event.
+func TestHandleEventResubmit_FailedStoreIsAnError(t *testing.T) {
+	t.Parallel()
+
+	var (
+		h     *handlers.Handlers
+		sess  *session.Session
+		db    *database.Database
+		dbMgr *database.WebhookDBManager
 	)
+
+	app := newTestApp(t, &h, &sess, &db, &dbMgr)
+	app.RequireStart()
+
+	t.Cleanup(app.RequireStop)
+
+	wh := seedWebhook(t, db)
+	original := seedStoredEvent(t, dbMgr, wh.ID, `{"not":"stored"}`)
+
+	// Without its event totals table the webhook's database refuses
+	// the totals write, which comes after the event row.
+	webhookDB, err := dbMgr.GetDB(wh.ID)
+	require.NoError(t, err)
+	require.NoError(t,
+		webhookDB.Migrator().DropTable(&database.EventTotals{}))
+
+	w := postResubmit(t, h, sess, wh.ID, original.ID)
+
+	assert.Equal(t, http.StatusInternalServerError, w.Code)
+	assert.Contains(t, w.Body.String(), "500 Internal Server Error")
+	assert.Len(t, listEvents(t, webhookDB), 1)
 }
 
 // TestHandleSourceLogs_ShowsResubmitProvenance proves the event log
@@ -575,7 +554,7 @@ func TestHandleSourceLogs_ShowsResubmitProvenance(t *testing.T) {
 	wh := seedWebhook(t, db)
 	seedConfiguredTarget(
 		t, db, wh.ID, database.TargetTypeHTTP,
-		`{"url":"`+resubmitTargetURL+`"}`,
+		database.Target{URL: resubmitTargetURL},
 	)
 	original := seedStoredEvent(t, dbMgr, wh.ID, `{"trace":"me"}`)
 

internal/handlers/export_test.go

@@ -133,36 +133,28 @@ func (s *Handlers) RenderTemplateForTest(
 	s.renderTemplate(w, r, pageTemplate, data)
 }
 
-// BuildSlackTargetConfigForTest exposes
+// SetSlackTargetSettingsForTest exposes setSlackTargetSettings for use
-// buildSlackTargetConfig for use in the handlers_test package.
+// in the handlers_test package.
-func (s *Handlers) BuildSlackTargetConfigForTest(
+func (s *Handlers) SetSlackTargetSettingsForTest(
 	ctx context.Context,
+	target *database.Target,
 	targetURL string,
-) (string, string, error) {
+) string {
-	return s.buildSlackTargetConfig(ctx, targetURL)
+	return s.setSlackTargetSettings(ctx, target, targetURL)
 }
 
-// BuildHTTPTargetConfigForTest exposes buildHTTPTargetConfig
+// SetDatabaseTargetSettingsForTest exposes setDatabaseTargetSettings
-// for use in the handlers_test package, taking the form fields
+// for use in the handlers_test package.
-// an HTTP target's configuration is built from.
+func SetDatabaseTargetSettingsForTest(
-func (s *Handlers) BuildHTTPTargetConfigForTest(
+	target *database.Target,
-	ctx context.Context,
-	targetURL, headers, timeout string,
-) (string, string, error) {
-	return s.buildHTTPTargetConfig(ctx, targetFormInput{
-		URL:     targetURL,
-		Headers: headers,
-		Timeout: timeout,
-	})
-}
-
-// BuildDatabaseTargetConfigForTest exposes
-// buildDatabaseTargetConfig for use in the handlers_test
-// package.
-func BuildDatabaseTargetConfigForTest(
 	expiry, rotation string,
-) (string, string, error) {
+) string {
-	return buildDatabaseTargetConfig(expiry, rotation)
+	return setDatabaseTargetSettings(target, expiry, rotation)
+}
+
+// FormatArchiveExpiryForTest exposes formatArchiveExpiry.
+func FormatArchiveExpiryForTest(expiry time.Duration) string {
+	return formatArchiveExpiry(expiry)
 }
 
 // ArchiveFileViewForTest exposes archiveFileView, which describes a

internal/handlers/handlers.go

@@ -64,7 +64,7 @@ type HandlersParams struct {
 	Healthcheck     *healthcheck.Healthcheck
 	Session         *session.Session
 	Middleware      *middleware.Middleware
-	Notifier        delivery.Notifier
+	Engine          *delivery.Engine
 	Archives        archive.Archives
 	CircuitBreakers delivery.CircuitBreakers
 	SSRFGuard       *delivery.Guard
@@ -82,7 +82,7 @@ type Handlers struct {
 	dbMgr     *database.WebhookDBManager
 	session   *session.Session
 	mw        *middleware.Middleware
-	notifier  delivery.Notifier
+	engine    *delivery.Engine
 	archives  archive.Archives
 	breakers  delivery.CircuitBreakers
 	mtr       *metrics.Set
@@ -138,7 +138,7 @@ func New(
 	s.dbMgr = params.WebhookDBMgr
 	s.session = params.Session
 	s.mw = params.Middleware
-	s.notifier = params.Notifier
+	s.engine = params.Engine
 	s.archives = params.Archives
 	s.breakers = params.CircuitBreakers
 	s.mtr = params.Metrics

internal/handlers/handlers_test.go

@@ -8,6 +8,7 @@ import (
 	"log/slog"
 	"net/http"
 	"net/http/httptest"
+	"strconv"
 	"sync"
 	"testing"
 	"time"
@@ -29,33 +30,6 @@ import (
 	"sneak.berlin/go/webhooker/internal/session"
 )
 
-// recordingNotifier is a delivery.Notifier that records the tasks it
-// was handed, so a test can prove a handler queued the delivery it
-// claims to have queued — and, on the refusal paths, that it queued
-// nothing.
-type recordingNotifier struct {
-	mu    sync.Mutex
-	tasks []delivery.Task
-}
-
-func (n *recordingNotifier) Notify(tasks []delivery.Task) {
-	n.mu.Lock()
-	defer n.mu.Unlock()
-
-	n.tasks = append(n.tasks, tasks...)
-}
-
-// Tasks returns a copy of the recorded tasks.
-func (n *recordingNotifier) Tasks() []delivery.Task {
-	n.mu.Lock()
-	defer n.mu.Unlock()
-
-	out := make([]delivery.Task, len(n.tasks))
-	copy(out, n.tasks)
-
-	return out
-}
-
 // recordingArchives is an archive.Archives that records what it
 // was asked to do, so a test can prove that a deletion or rename
 // path reached the archive writers. After FailRenames, every
@@ -263,11 +237,12 @@ func newTestAppWithConfig(
 			database.NewWebhookDBManager,
 			healthcheck.New,
 			session.New,
-			func() *recordingNotifier {
+			archive.NewWriters,
-				return &recordingNotifier{}
+			// The engine is built on a lifecycle that is never started,
-			},
+			// so no worker runs: every delivery the engine creates for a
-			func(n *recordingNotifier) delivery.Notifier {
+			// handler stays pending, where the test can read it.
-				return n
+			func(p delivery.EngineParams) *delivery.Engine {
+				return delivery.New(fxtest.NewLifecycle(t), p)
 			},
 			func() *recordingArchives {
 				return &recordingArchives{}
@@ -354,7 +329,7 @@ func TestHandleIndex_Authenticated(t *testing.T) {
 	)
 }
 
-func TestBuildSlackTargetConfig_AcceptsPublicURL(t *testing.T) {
+func TestSetSlackTargetSettings_AcceptsPublicURL(t *testing.T) {
 	t.Parallel()
 
 	var h *handlers.Handlers
@@ -364,16 +339,17 @@ func TestBuildSlackTargetConfig_AcceptsPublicURL(t *testing.T) {
 
 	t.Cleanup(app.RequireStop)
 
-	cfg, errMsg, err := h.BuildSlackTargetConfigForTest(
+	const hookURL = "http://93.184.216.34/services/T00/B00/xxx"
-		t.Context(), "http://93.184.216.34/services/T00/B00/xxx",
+
-	)
+	var target database.Target
+
+	errMsg := h.SetSlackTargetSettingsForTest(t.Context(), &target, hookURL)
 
-	require.NoError(t, err)
 	assert.Empty(t, errMsg)
-	assert.Contains(t, cfg, "webhookUrl")
+	assert.Equal(t, hookURL, target.URL)
 }
 
-func TestBuildSlackTargetConfig_RejectsReservedURL(t *testing.T) {
+func TestSetSlackTargetSettings_RejectsReservedURL(t *testing.T) {
 	t.Parallel()
 
 	var h *handlers.Handlers
@@ -383,13 +359,14 @@ func TestBuildSlackTargetConfig_RejectsReservedURL(t *testing.T) {
 
 	t.Cleanup(app.RequireStop)
 
-	cfg, errMsg, err := h.BuildSlackTargetConfigForTest(
+	var target database.Target
-		t.Context(), "http://169.254.169.254/latest/meta-data/",
+
+	errMsg := h.SetSlackTargetSettingsForTest(
+		t.Context(), &target, "http://169.254.169.254/latest/meta-data/",
 	)
 
-	require.NoError(t, err)
 	assert.Contains(t, errMsg, "Invalid target URL")
-	assert.Empty(t, cfg)
+	assert.Empty(t, target.URL)
 }
 
 func TestRenderTemplate(t *testing.T) {
@@ -483,72 +460,100 @@ func TestRenderTemplateMidRenderErrorSendsNoPartialBody(t *testing.T) {
 	)
 }
 
-func TestBuildDatabaseTargetConfig_Valid(t *testing.T) {
+func TestSetDatabaseTargetSettings_Valid(t *testing.T) {
 	t.Parallel()
 
-	// Empty expiry and rotation: the keep-forever, one-file default,
+	cases := []struct {
-	// empty config.
+		expiry, rotation string
-	cfg, errMsg, err := handlers.BuildDatabaseTargetConfigForTest("", "")
+		wantExpiry       time.Duration
-	require.NoError(t, err)
+		wantRotation     string
-	assert.Empty(t, errMsg)
+	}{
-	assert.Empty(t, cfg)
+		// Empty expiry and rotation: the keep-forever, one-file
+		// default.
+		{"", "", 0, rotationNone},
+		{expiryNever, "", 0, rotationNone},
+		{" 36h ", "", 36 * time.Hour, rotationNone},
+		{"", rotationDaily, 0, rotationDaily},
+		{"90m", rotationHourly, 90 * time.Minute, rotationHourly},
+	}
 
-	// Explicit never is stored as config.
+	for _, tc := range cases {
-	cfg, errMsg, err = handlers.BuildDatabaseTargetConfigForTest("never", "")
+		var target database.Target
-	require.NoError(t, err)
-	assert.Empty(t, errMsg)
-	assert.JSONEq(t, `{"expiry":"never"}`, cfg)
 
-	// A positive duration is stored as config.
+		errMsg := handlers.SetDatabaseTargetSettingsForTest(
-	cfg, errMsg, err = handlers.BuildDatabaseTargetConfigForTest("720h", "")
+			&target, tc.expiry, tc.rotation,
-	require.NoError(t, err)
+		)
-	assert.Empty(t, errMsg)
-	assert.JSONEq(t, `{"expiry":"720h"}`, cfg)
 
-	// A rotation is stored as config, with or without an expiry.
+		assert.Empty(t, errMsg, tc)
-	cfg, errMsg, err = handlers.BuildDatabaseTargetConfigForTest("", "daily")
+		assert.Equal(t, tc.wantExpiry, target.ArchiveExpiry, tc)
-	require.NoError(t, err)
+		assert.Equal(t, tc.wantRotation, target.ArchiveRotation, tc)
-	assert.Empty(t, errMsg)
+	}
-	assert.JSONEq(t, `{"rotation":"daily"}`, cfg)
-
-	cfg, errMsg, err = handlers.BuildDatabaseTargetConfigForTest(
-		"720h", "hourly",
-	)
-	require.NoError(t, err)
-	assert.Empty(t, errMsg)
-	assert.JSONEq(t, `{"expiry":"720h","rotation":"hourly"}`, cfg)
 }
 
-func TestBuildDatabaseTargetConfig_RejectsBadExpiry(
+// TestSetDatabaseTargetSettings_RejectsBadExpiry pins each refusal's
+// whole message, as the form shows it.
+func TestSetDatabaseTargetSettings_RejectsBadExpiry(
 	t *testing.T,
 ) {
 	t.Parallel()
 
-	for _, bad := range []string{"nonsense", "7d", "-5h"} {
+	cases := map[string]string{
-		cfg, errMsg, err := handlers.BuildDatabaseTargetConfigForTest(bad, "")
+		"nonsense": `Invalid archive expiry: expiry must be "never" or ` +
+			`a Go duration such as "720h": time: invalid duration ` +
+			`"nonsense"`,
+		"7d": `Invalid archive expiry: expiry must be "never" or a Go ` +
+			`duration such as "720h": time: unknown unit "d" in ` +
+			`duration "7d"`,
+		"-5h": `Invalid archive expiry: expiry must be a positive ` +
+			`duration or "never": "-5h"`,
+	}
 
-		require.NoError(t, err)
+	for bad, want := range cases {
-		assert.Contains(
+		var target database.Target
-			t, errMsg, "Invalid archive expiry",
+
-			"expiry %q should be refused", bad,
+		errMsg := handlers.SetDatabaseTargetSettingsForTest(
+			&target, bad, "",
 		)
-		assert.Empty(t, cfg)
+
+		assert.Equal(t, want, errMsg, "expiry %q", bad)
 	}
 }
 
-func TestBuildDatabaseTargetConfig_RejectsBadRotation(
+func TestSetDatabaseTargetSettings_RejectsBadRotation(
 	t *testing.T,
 ) {
 	t.Parallel()
 
 	for _, bad := range []string{"weekly", "Daily", " none"} {
-		cfg, errMsg, err := handlers.BuildDatabaseTargetConfigForTest("", bad)
+		var target database.Target
 
-		require.NoError(t, err)
+		errMsg := handlers.SetDatabaseTargetSettingsForTest(
-		assert.Contains(
+			&target, "", bad,
-			t, errMsg, "Invalid archive rotation",
+		)
-			"rotation %q should be refused", bad,
+
+		assert.Equal(
+			t,
+			"Invalid archive rotation: rotation must be none, "+
+				"monthly, daily or hourly: "+strconv.Quote(bad),
+			errMsg,
 		)
-		assert.Empty(t, cfg)
+	}
+}
+
+// TestFormatArchiveExpiry covers the expiries the expiry choices do
+// not: TestArchiveExpiryChoices shows the edit form starting on each
+// choice. An expiry in whole hours is written in hours, and any other
+// as Go writes it, which the form accepts back unchanged.
+func TestFormatArchiveExpiry(t *testing.T) {
+	t.Parallel()
+
+	cases := map[time.Duration]string{
+		0:                expiryNever,
+		36 * time.Hour:   "36h",
+		90 * time.Minute: "1h30m0s",
+	}
+
+	for expiry, want := range cases {
+		assert.Equal(t, want, handlers.FormatArchiveExpiryForTest(expiry))
 	}
 }

internal/handlers/source_create_targets_test.go

@@ -7,6 +7,7 @@ import (
 	"net/http/httptest"
 	"net/url"
 	"testing"
+	"time"
 
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
@@ -54,15 +55,26 @@ func TestHandleSourceCreateSubmit_CreatesRequestedTargets(t *testing.T) {
 
 	env := setupSourceTest(t)
 
-	// Each value the archive pruning choice submits, after an empty
+	// Each value the archive pruning choice submits and the expiry it
-	// one that stands for the archive checkbox left off.
+	// stores, after an empty one that stands for the archive checkbox
-	expiries := []string{
+	// left off.
-		"", "never", "1h", "12h", "24h", "720h", "2160h", "8760h",
+	expiries := []struct {
+		value  string
+		stored time.Duration
+	}{
+		{"", 0},
+		{expiryNever, 0},
+		{"1h", time.Hour},
+		{"12h", 12 * time.Hour},
+		{"24h", 24 * time.Hour},
+		{"720h", 720 * time.Hour},
+		{"2160h", 2160 * time.Hour},
+		{"8760h", 8760 * time.Hour},
 	}
 
 	for _, httpURL := range []string{"", editOriginalURL} {
 		for _, expiry := range expiries {
-			name := "url=" + httpURL + " archive=" + expiry
+			name := "url=" + httpURL + " archive=" + expiry.value
 
 			t.Run(name, func(t *testing.T) {
 				t.Parallel()
@@ -72,9 +84,9 @@ func TestHandleSourceCreateSubmit_CreatesRequestedTargets(t *testing.T) {
 				form.Set("http_url", httpURL)
 				form.Set("archive_expiry", "720h")
 
-				if expiry != "" {
+				if expiry.value != "" {
 					form.Set("archive", "on")
-					form.Set("archive_expiry", expiry)
+					form.Set("archive_expiry", expiry.value)
 				}
 
 				w := submitCreateForm(env, form)
@@ -96,17 +108,16 @@ func TestHandleSourceCreateSubmit_CreatesRequestedTargets(t *testing.T) {
 					wantCount++
 
 					assert.Equal(t, "HTTP", byType[database.TargetTypeHTTP].Name)
-					assert.JSONEq(t, `{"url":"`+httpURL+`"}`,
+					assert.Equal(t, httpURL, byType[database.TargetTypeHTTP].URL)
-						byType[database.TargetTypeHTTP].Config)
 				}
 
-				if expiry != "" {
+				if expiry.value != "" {
 					wantCount++
 
 					assert.Equal(t, "Archive",
 						byType[database.TargetTypeDatabase].Name)
-					assert.JSONEq(t, `{"expiry":"`+expiry+`"}`,
+					assert.Equal(t, expiry.stored,
-						byType[database.TargetTypeDatabase].Config)
+						byType[database.TargetTypeDatabase].ArchiveExpiry)
 				}
 
 				assert.Len(t, byType, wantCount)

internal/handlers/source_detail_test.go

@@ -5,6 +5,7 @@ import (
 	"net/http"
 	"net/http/httptest"
 	"testing"
+	"time"
 
 	"github.com/go-chi/chi"
 	"github.com/stretchr/testify/assert"
@@ -25,25 +26,24 @@ const (
 		slackSecretPath
 )
 
-// seedConfiguredTarget inserts a target with a stored config
+// seedConfiguredTarget inserts an active target of targetType with
-// blob and returns it.
+// the settings (URL to ArchiveRotation) that settings carries, and
+// returns it.
 func seedConfiguredTarget(
 	t *testing.T,
 	db *database.Database,
 	webhookID string,
 	targetType database.TargetType,
-	config string,
+	settings database.Target,
 ) *database.Target {
 	t.Helper()
 
-	tgt := &database.Target{
+	tgt := &settings
-		WebhookID:   webhookID,
+	tgt.WebhookID = webhookID
-		Name:        "t-" + string(targetType),
+	tgt.Name = "t-" + string(targetType)
-		Type:        targetType,
+	tgt.Type = targetType
-		Active:      true,
+	tgt.Active = true
-		Config:      config,
+	tgt.MaxAttempts = 1
-		MaxAttempts: 1,
-	}
 
 	require.NoError(
 		t,
@@ -108,89 +108,59 @@ func serveSourceDetailPage(
 	return w
 }
 
-// TestHandleSourceDetail_MasksSlackWebhookURL is the
+// TestHandleSourceDetail_MasksTargetURL is the load-bearing
-// load-bearing regression test for the credential leak: the
+// regression test for the credential leak: the rendered page must
-// rendered page must show the Slack target without any of the
+// show a Slack target, and an http target, without any of the secret
-// secret path segments of its webhook URL.
+// path segments of its URL. An http target's destination is routinely
-func TestHandleSourceDetail_MasksSlackWebhookURL(t *testing.T) {
+// an incoming-webhook endpoint too, so the same Slack URL serves for
+// both.
+func TestHandleSourceDetail_MasksTargetURL(t *testing.T) {
 	t.Parallel()
 
-	var (
+	labels := map[database.TargetType]string{
-		h    *handlers.Handlers
+		database.TargetTypeSlack: "Webhook URL",
-		sess *session.Session
+		database.TargetTypeHTTP:  "Destination URL",
-		db   *database.Database
+	}
-	)
 
-	app := newTestApp(t, &h, &sess, &db)
+	for targetType, label := range labels {
-	app.RequireStart()
+		t.Run(string(targetType), func(t *testing.T) {
+			t.Parallel()
 
-	t.Cleanup(app.RequireStop)
+			var (
+				h    *handlers.Handlers
+				sess *session.Session
+				db   *database.Database
+			)
 
-	wh := seedWebhook(t, db)
+			app := newTestApp(t, &h, &sess, &db)
-	seedConfiguredTarget(
+			app.RequireStart()
-		t, db, wh.ID,
-		database.TargetTypeSlack,
-		`{"webhookUrl":"`+slackWebhookURL+`"}`,
-	)
 
-	body := renderSourceDetailPage(t, h, sess, wh.ID)
+			t.Cleanup(app.RequireStop)
 
-	assert.NotContains(t, body, slackSecretPath)
+			wh := seedWebhook(t, db)
-	assert.NotContains(t, body, "T00000000")
+			seedConfiguredTarget(
-	assert.NotContains(t, body, "B00000000")
+				t, db, wh.ID, targetType,
-	assert.NotContains(
+				database.Target{URL: slackWebhookURL},
-		t, body, "XXXXXXXXXXXXXXXXXXXXXXXX",
+			)
-	)
-	assert.NotContains(t, body, "webhookUrl")
 
-	assert.Contains(t, body, "Webhook URL")
+			body := renderSourceDetailPage(t, h, sess, wh.ID)
-	assert.Contains(t, body, "https://hooks.slack.com/...")
-}
 
-// TestHandleSourceDetail_MasksHTTPDestinationURL is the
+			assert.NotContains(t, body, slackSecretPath)
-// regression test for the same leak reached through the http
+			assert.NotContains(t, body, "T00000000")
-// target: its destination is routinely an incoming-webhook
+			assert.NotContains(t, body, "B00000000")
-// endpoint whose path segments are the credential, so the
+			assert.NotContains(
-// rendered page must not contain them.
+				t, body, "XXXXXXXXXXXXXXXXXXXXXXXX",
-func TestHandleSourceDetail_MasksHTTPDestinationURL(
+			)
-	t *testing.T,
-) {
-	t.Parallel()
 
-	var (
+			assert.Contains(t, body, label)
-		h    *handlers.Handlers
+			assert.Contains(t, body, "https://hooks.slack.com/...")
-		sess *session.Session
+		})
-		db   *database.Database
+	}
-	)
-
-	app := newTestApp(t, &h, &sess, &db)
-	app.RequireStart()
-
-	t.Cleanup(app.RequireStop)
-
-	wh := seedWebhook(t, db)
-	seedConfiguredTarget(
-		t, db, wh.ID,
-		database.TargetTypeHTTP,
-		`{"url":"`+slackWebhookURL+`"}`,
-	)
-
-	body := renderSourceDetailPage(t, h, sess, wh.ID)
-
-	assert.NotContains(t, body, slackSecretPath)
-	assert.NotContains(t, body, "T00000000")
-	assert.NotContains(t, body, "B00000000")
-	assert.NotContains(
-		t, body, "XXXXXXXXXXXXXXXXXXXXXXXX",
-	)
-
-	assert.Contains(t, body, "Destination URL")
-	assert.Contains(t, body, "https://hooks.slack.com/...")
 }
 
 // TestHandleSourceDetail_RendersNamedTargetFields proves the
 // other target types render labelled fields rather than the
-// stored blob.
+// stored values.
 func TestHandleSourceDetail_RendersNamedTargetFields(
 	t *testing.T,
 ) {
@@ -212,18 +182,24 @@ func TestHandleSourceDetail_RendersNamedTargetFields(
 	seedConfiguredTarget(
 		t, db, wh.ID,
 		database.TargetTypeHTTP,
-		`{"url":"https://example.com/hook","timeout":30,`+
+		database.Target{
-			`"headers":{"Authorization":"Bearer sekrit"}}`,
+			URL:            "https://example.com/hook",
+			TimeoutSeconds: 30,
+			Headers:        map[string]string{"X-Api-Key": "sekrit"},
+		},
 	)
 	seedConfiguredTarget(
 		t, db, wh.ID,
 		database.TargetTypeDatabase,
-		`{"expiry":"720h"}`,
+		database.Target{
+			ArchiveExpiry:   720 * time.Hour,
+			ArchiveRotation: rotationNone,
+		},
 	)
 	seedConfiguredTarget(
 		t, db, wh.ID,
 		database.TargetType("carrier-pigeon"),
-		`{"beak":"sharp"}`,
+		database.Target{URL: "https://pigeon.example/beak"},
 	)
 
 	body := renderSourceDetailPage(t, h, sess, wh.ID)
@@ -242,8 +218,8 @@ func TestHandleSourceDetail_RendersNamedTargetFields(
 	assert.Contains(t, list, "Archive rotation: none")
 	assert.Contains(t, body, `<option value="database">Archive</option>`)
 
-	// An unknown type gets the neutral placeholder, never the
+	// An unknown type gets the neutral placeholder, never its
-	// stored blob.
+	// stored URL.
 	assert.Contains(t, body, "(unavailable)")
 	assert.NotContains(t, body, "beak")
 }

internal/handlers/source_logs_deleted_target_test.go

@@ -161,7 +161,7 @@ func TestHandleSourceLogs_MasksDeletedTargetConfig(t *testing.T) {
 	tgt := seedConfiguredTarget(
 		t, db, wh.ID,
 		database.TargetTypeSlack,
-		`{"webhookUrl":"`+slackWebhookURL+`"}`,
+		database.Target{URL: slackWebhookURL},
 	)
 
 	seedDeliveredEvent(t, dbMgr, wh.ID, tgt.ID)
@@ -175,7 +175,6 @@ func TestHandleSourceLogs_MasksDeletedTargetConfig(t *testing.T) {
 	assert.NotContains(
 		t, body, "XXXXXXXXXXXXXXXXXXXXXXXX",
 	)
-	assert.NotContains(t, body, "webhookUrl")
 
 	// The name is there; only the credential is not.
 	assert.Contains(t, body, tgt.Name+deletedMarker)

internal/handlers/source_logs_test.go

@@ -138,7 +138,7 @@ func TestHandleSourceLogs_MasksSlackWebhookURL(t *testing.T) {
 	tgt := seedConfiguredTarget(
 		t, db, wh.ID,
 		database.TargetTypeSlack,
-		`{"webhookUrl":"`+slackWebhookURL+`"}`,
+		database.Target{URL: slackWebhookURL},
 	)
 
 	seedDeliveredEvent(t, dbMgr, wh.ID, tgt.ID)
@@ -151,7 +151,6 @@ func TestHandleSourceLogs_MasksSlackWebhookURL(t *testing.T) {
 	assert.NotContains(
 		t, body, "XXXXXXXXXXXXXXXXXXXXXXXX",
 	)
-	assert.NotContains(t, body, "webhookUrl")
 
 	// The page still identifies the delivery's target.
 	assert.Contains(t, body, tgt.Name)

internal/handlers/target_create.go

@@ -2,7 +2,6 @@ package handlers
 
 import (
 	"context"
-	"encoding/json"
 	"errors"
 	"fmt"
 	"net/http"
@@ -65,20 +64,14 @@ func (h *Handlers) processTargetCreate(
 ) {
 	in := targetFormInputFrom(r)
 
-	target, errMsg, err := h.newTarget(r.Context(), webhook.ID, in)
+	target, errMsg := h.newTarget(r.Context(), webhook.ID, in)
-	if err != nil {
-		h.serverError(w, r, "failed to encode target config", err)
-
-		return
-	}
-
 	if errMsg != "" {
 		h.renderSourceDetail(w, r, webhook, in, errMsg)
 
 		return
 	}
 
-	err = h.db.DB().Create(target).Error
+	err := h.db.DB().Create(target).Error
 	if err != nil {
 		h.serverError(w, r, "failed to create target", err)
 
@@ -93,15 +86,13 @@ func (h *Handlers) processTargetCreate(
 
 // newTarget validates a new target for a webhook and returns the row
 // to create, or, when it refuses the target, the message the form
-// shows. An error is the server's fault, not a refusal: the accepted
+// shows. Every form that creates a target goes through here, so they
-// configuration could not be encoded. Every form that creates a
+// all accept and refuse the same things.
-// target goes through here, so they all accept and refuse the same
-// things.
 func (h *Handlers) newTarget(
 	ctx context.Context,
 	webhookID string,
 	in targetFormInput,
-) (*database.Target, string, error) {
+) (*database.Target, string) {
 	target := &database.Target{
 		WebhookID:   webhookID,
 		Type:        in.Type,
@@ -109,34 +100,33 @@ func (h *Handlers) newTarget(
 		MaxAttempts: 1,
 	}
 
-	errMsg, err := h.setTargetFromForm(ctx, target, in)
+	errMsg := h.setTargetFromForm(ctx, target, in)
-	if err != nil || errMsg != "" {
+	if errMsg != "" {
-		return nil, errMsg, err
+		return nil, errMsg
 	}
 
-	return target, "", nil
+	return target, ""
 }
 
 // setTargetFromForm validates a target form against the target's type
-// and, when it accepts it, sets the target's name, configuration and
+// and sets the target's name, settings and number of delivery attempts
-// number of delivery attempts from it. It returns the message the form
+// from it. It returns the message the form shows for anything it
-// shows for anything it refuses, an unknown type among them, and then
+// refuses, an unknown type among them; the caller then discards the
-// leaves the target unchanged; an error is the server's fault, as for
+// target, which may be partly set.
-// newTarget.
 // The add target form and the target edit form both go through here,
 // so the two cannot come to disagree about what a target may be.
 func (h *Handlers) setTargetFromForm(
 	ctx context.Context,
 	target *database.Target,
 	in targetFormInput,
-) (string, error) {
+) string {
 	if in.Name == "" {
-		return "Name is required", nil
+		return "Name is required"
 	}
 
-	configJSON, errMsg, err := h.buildTargetConfig(ctx, target.Type, in)
+	errMsg := h.setTargetSettings(ctx, target, in)
-	if err != nil || errMsg != "" {
+	if errMsg != "" {
-		return errMsg, err
+		return errMsg
 	}
 
 	// An empty max_attempts keeps the target's count: the default of
@@ -147,14 +137,13 @@ func (h *Handlers) setTargetFromForm(
 	// target is delivering with.
 	maxAttempts, err := parseMaxAttempts(in.MaxAttempts, target.MaxAttempts)
 	if err != nil {
-		return "Invalid delivery attempts: " + attemptsErrorMessage(err), nil
+		return "Invalid delivery attempts: " + attemptsErrorMessage(err)
 	}
 
 	target.Name = in.Name
-	target.Config = configJSON
 	target.MaxAttempts = maxAttempts
 
-	return "", nil
+	return ""
 }
 
 // targetFormInput carries the raw values of a target form. Both the
@@ -213,84 +202,81 @@ func targetFormInputFrom(r *http.Request) targetFormInput {
 	}
 }
 
-// buildTargetConfig builds the JSON config string for a target from
+// setTargetSettings sets a target's settings from the submitted form
-// the submitted form values, or returns the message the form shows
+// values, or returns the message the form shows for a value it
-// for a value it refuses. An error is the server's fault, not a
+// refuses. Which fields of in apply depends on the target type; a
-// refusal: the accepted configuration could not be encoded. Which
+// type without a URL ignores any URL submitted, and the settings a
-// fields of in apply depends on the target type; a type without a URL
+// type does not use are left empty.
-// ignores any URL submitted.
+func (h *Handlers) setTargetSettings(
-func (h *Handlers) buildTargetConfig(
 	ctx context.Context,
-	targetType database.TargetType,
+	target *database.Target,
 	in targetFormInput,
-) (string, string, error) {
+) string {
-	switch targetType {
+	switch target.Type {
 	case database.TargetTypeHTTP:
-		return h.buildHTTPTargetConfig(ctx, in)
+		return h.setHTTPTargetSettings(ctx, target, in)
 	case database.TargetTypeSlack:
-		return h.buildSlackTargetConfig(ctx, in.URL)
+		return h.setSlackTargetSettings(ctx, target, in.URL)
 	case database.TargetTypeDatabase:
-		return buildDatabaseTargetConfig(in.Expiry, in.Rotation)
+		return setDatabaseTargetSettings(target, in.Expiry, in.Rotation)
 	case database.TargetTypeLog:
-		return "", "", nil
+		return ""
 	default:
-		return "", "Invalid target type", nil
+		return "Invalid target type"
 	}
 }
 
-// buildHTTPTargetConfig builds config JSON for an HTTP target: an
+// setHTTPTargetSettings sets an HTTP target's SSRF-validated
-// SSRF-validated destination plus the optional headers, timeout and
+// destination plus the optional headers, timeout and query string
-// query string setting the delivery path honours.
+// setting the delivery path honours.
-func (h *Handlers) buildHTTPTargetConfig(
+func (h *Handlers) setHTTPTargetSettings(
 	ctx context.Context,
+	target *database.Target,
 	in targetFormInput,
-) (string, string, error) {
+) string {
 	errMsg := h.validateTargetURL(
 		ctx, in.URL, "URL is required for HTTP targets",
 	)
 	if errMsg != "" {
-		return "", errMsg, nil
+		return errMsg
 	}
 
 	headers, err := delivery.ParseTargetHeaders(in.Headers)
 	if err != nil {
-		return "", fmt.Sprintf("Invalid headers: %v", err), nil
+		return fmt.Sprintf("Invalid headers: %v", err)
 	}
 
 	timeout, err := delivery.ParseTargetTimeout(in.Timeout)
 	if err != nil {
-		return "", fmt.Sprintf("Invalid timeout: %v", err), nil
+		return fmt.Sprintf("Invalid timeout: %v", err)
 	}
 
-	configJSON, err := marshalTargetConfig(delivery.HTTPTargetConfig{
+	target.URL = in.URL
-		URL:          in.URL,
+	target.Headers = headers
-		Headers:      headers,
+	target.TimeoutSeconds = timeout
-		Timeout:      timeout,
+	target.ForwardQuery = in.ForwardQuery
-		ForwardQuery: in.ForwardQuery,
-	})
 
-	return configJSON, "", err
+	return ""
 }
 
-// buildSlackTargetConfig builds config JSON for a Slack target,
+// setSlackTargetSettings sets a Slack target's one setting, its
-// whose whole configuration is one SSRF-validated webhook URL.
+// SSRF-validated webhook URL.
-func (h *Handlers) buildSlackTargetConfig(
+func (h *Handlers) setSlackTargetSettings(
 	ctx context.Context,
+	target *database.Target,
 	targetURL string,
-) (string, string, error) {
+) string {
 	errMsg := h.validateTargetURL(
 		ctx, targetURL,
 		"Webhook URL is required for Slack targets",
 	)
 	if errMsg != "" {
-		return "", errMsg, nil
+		return errMsg
 	}
 
-	configJSON, err := marshalTargetConfig(delivery.SlackTargetConfig{
+	target.URL = targetURL
-		WebhookURL: targetURL,
-	})
 
-	return configJSON, "", err
+	return ""
 }
 
 // validateTargetURL refuses an empty or SSRF-blocked destination,
@@ -341,52 +327,31 @@ func (h *Handlers) validateTargetURL(
 	return ""
 }
 
-// marshalTargetConfig serialises a target configuration for storage.
+// setDatabaseTargetSettings sets a database (archive) target's
-func marshalTargetConfig(cfg any) (string, error) {
+// expiry and rotation. Both are optional: an empty or never expiry
-	configBytes, err := json.Marshal(cfg)
+// keeps the archive forever, and an empty rotation is stored as none,
-	if err != nil {
+// one file. A bad value is refused here, at the form, instead of
-		return "", err
+// being stored.
-	}
+func setDatabaseTargetSettings(
-
+	target *database.Target,
-	return string(configBytes), nil
-}
-
-// buildDatabaseTargetConfig builds config JSON for a database
-// (archive) target. The optional expiry and rotation are validated
-// here, at creation time, so a bad value is refused instead of
-// failing every subsequent delivery. Each is stored only when set,
-// and with neither the config is empty (the keep-forever, one-file
-// default).
-func buildDatabaseTargetConfig(
 	expiry, rotation string,
-) (string, string, error) {
+) string {
-	expiry = strings.TrimSpace(expiry)
+	archiveExpiry, err := archive.ParseExpiry(strings.TrimSpace(expiry))
-
-	err := archive.ValidateExpiry(expiry)
 	if err != nil {
-		return "", fmt.Sprintf("Invalid archive expiry: %v", err), nil
+		return fmt.Sprintf("Invalid archive expiry: %v", err)
 	}
 
 	err = archive.ValidateRotation(rotation)
 	if err != nil {
-		return "", fmt.Sprintf("Invalid archive rotation: %v", err), nil
+		return fmt.Sprintf("Invalid archive rotation: %v", err)
 	}
 
-	cfg := map[string]any{}
+	if rotation == "" {
-
+		rotation = archiveRotationNone
-	if expiry != "" {
-		cfg["expiry"] = expiry
 	}
 
-	if rotation != "" {
+	target.ArchiveExpiry = archiveExpiry
-		cfg["rotation"] = rotation
+	target.ArchiveRotation = rotation
-	}
 
-	if len(cfg) == 0 {
+	return ""
-		return "", "", nil
-	}
-
-	configJSON, err := marshalTargetConfig(cfg)
-
-	return configJSON, "", err
 }

internal/handlers/target_create_query_test.go

@@ -176,7 +176,7 @@ func TestHandleTargetCreate_BodyURLStillCreatesTheTarget(t *testing.T) {
 
 	targets := targetsForWebhook(t, env.db, webhook.ID)
 	require.Len(t, targets, 1)
-	assert.Contains(t, targets[0].Config, targetSecretSegments)
+	assert.Equal(t, targetSecretURL, targets[0].URL)
 
 	// The body carried the credential, so the access log must still
 	// not have it: the log records the request line only.

internal/handlers/target_create_test.go

@@ -6,73 +6,114 @@ import (
 	"net/url"
 	"strings"
 	"testing"
+	"time"
 
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
 	"sneak.berlin/go/webhooker/internal/database"
 )
 
-// TestHandleTargetCreate_EveryType adds a target of each type. Each
+// TestHandleTargetCreate_EveryType adds a target of each type and
-// submission carries a url: only the http and slack types store one.
+// checks the settings it stores. Each submission carries a url and an
+// expiry: only the http and slack types store the url, only the
+// database type the expiry, and every setting a type does not use
+// stays empty.
 func TestHandleTargetCreate_EveryType(t *testing.T) {
 	t.Parallel()
 
 	env := setupSourceTest(t)
 
-	// fields is the rest of each submission, as a query string.
+	// fields is the rest of each submission, as a query string, and
+	// want holds the settings stored.
 	cases := []struct {
 		targetType   database.TargetType
 		fields       string
-		wantConfig   string
+		want         database.Target
 		wantAttempts int
 	}{
 		{
-			database.TargetTypeHTTP, "timeout=12&max_attempts=3",
+			database.TargetTypeHTTP,
-			`{"url":"` + editOriginalURL + `","timeout":12}`, 3,
+			"timeout=12&max_attempts=3&forward_query=on",
+			database.Target{
+				URL:            editOriginalURL,
+				Headers:        map[string]string{},
+				TimeoutSeconds: 12,
+				ForwardQuery:   true,
+			}, 3,
 		},
 		{
 			database.TargetTypeSlack, "max_attempts=4",
-			`{"webhookUrl":"` + editOriginalURL + `"}`, 4,
+			database.Target{URL: editOriginalURL}, 4,
 		},
 		{
-			database.TargetTypeDatabase, "expiry=720h",
+			database.TargetTypeDatabase, "rotation=daily",
-			`{"expiry":"720h"}`, 1,
+			database.Target{
+				ArchiveExpiry:   720 * time.Hour,
+				ArchiveRotation: rotationDaily,
+			}, 1,
 		},
-		{database.TargetTypeLog, "", "", 1},
+		{database.TargetTypeLog, "", database.Target{}, 1},
 	}
 
 	for _, tc := range cases {
 		t.Run(string(tc.targetType), func(t *testing.T) {
 			t.Parallel()
 
-			webhook := seedWebhookWithRetention(t, env.db, 30)
+			_, got := addTargetThroughForm(
-
+				t, env, tc.targetType,
-			form, err := url.ParseQuery(tc.fields)
+				"url="+editOriginalURL+"&expiry=720h&"+tc.fields,
-			require.NoError(t, err)
-			form.Set("name", "every-type")
-			form.Set("type", string(tc.targetType))
-			form.Set("url", editOriginalURL)
-
-			w := serveTarget(
-				env, http.MethodPost,
-				"/hook/"+webhook.ID+"/targets", form,
 			)
-			require.Equal(t, http.StatusSeeOther, w.Code, w.Body.String())
+			assert.Equal(t, tc.targetType, got.Type)
-
+			assert.Equal(t, tc.wantAttempts, got.MaxAttempts)
-			targets := targetsForWebhook(t, env.db, webhook.ID)
+			assert.Equal(t, tc.want, targetSettingsOf(got))
-			require.Len(t, targets, 1)
-			assert.Equal(t, tc.targetType, targets[0].Type)
-			assert.Equal(t, tc.wantAttempts, targets[0].MaxAttempts)
-
-			if tc.wantConfig == "" {
-				assert.Empty(t, targets[0].Config)
-			} else {
-				assert.JSONEq(t, tc.wantConfig, targets[0].Config)
-			}
 		})
 	}
 }
 
+// addTargetThroughForm adds a target of targetType named every-type to
+// a new webhook through the add target form, with the rest of the form
+// given as a query string, and returns the webhook and the target the
+// form stored.
+func addTargetThroughForm(
+	t *testing.T,
+	env *sourceTestEnv,
+	targetType database.TargetType,
+	fields string,
+) (database.Webhook, database.Target) {
+	t.Helper()
+
+	webhook := seedWebhookWithRetention(t, env.db, 30)
+
+	form, err := url.ParseQuery(fields)
+	require.NoError(t, err)
+	form.Set("name", "every-type")
+	form.Set("type", string(targetType))
+
+	w := serveTarget(
+		env, http.MethodPost, "/hook/"+webhook.ID+"/targets", form,
+	)
+	require.Equal(t, http.StatusSeeOther, w.Code, w.Body.String())
+
+	targets := targetsForWebhook(t, env.db, webhook.ID)
+	require.Len(t, targets, 1)
+
+	return webhook, targets[0]
+}
+
+// targetSettingsOf returns a target's settings, URL to
+// ArchiveRotation, and nothing else, for comparing with the settings a
+// test expects.
+func targetSettingsOf(target database.Target) database.Target {
+	return database.Target{
+		URL:             target.URL,
+		Headers:         target.Headers,
+		TimeoutSeconds:  target.TimeoutSeconds,
+		ForwardQuery:    target.ForwardQuery,
+		ArchiveExpiry:   target.ArchiveExpiry,
+		ArchiveRotation: target.ArchiveRotation,
+	}
+}
+
 // TestHandleTargetCreate_RefusedFormComesBack refuses a target of each
 // type and checks that the webhook page comes back with the add target
 // form open on that type, the values entered, and the reason.

internal/handlers/target_edit.go

@@ -25,22 +25,15 @@ const (
 	tmplKeyMaxTimeout = "MaxTimeout"
 )
 
-// configUnreadableMessage is shown when a target's stored
-// configuration does not parse. It says plainly that saving replaces
-// the stored value rather than preserving it, because the form
-// cannot pre-fill what it could not read.
-const configUnreadableMessage = "The stored configuration for this " +
-	"target could not be read. Enter the values below; saving " +
-	"replaces the stored configuration."
-
 // targetEditView is the display model for the target edit page: the
 // target's row fields as stored. The values the form shows, the
-// UNMASKED configuration among them, come separately, as a
+// UNMASKED URL and headers among them, come separately, as a
 // targetFormInput.
 //
-// It deliberately omits database.Target's raw Config blob: the form
+// It deliberately omits database.Target's settings: the form renders
-// renders named fields, and giving the template the blob as well
+// them from the targetFormInput, and giving the template the target's
-// would put an unreviewed second path to the credential on the page.
+// URL and headers as well would put an unreviewed second path to the
+// credential on the page.
 type targetEditView struct {
 	ID     string
 	Name   string
@@ -48,13 +41,16 @@ type targetEditView struct {
 	Active bool
 }
 
-// HandleTargetEdit shows the form to edit a target.
+// HandleTargetEdit shows the form to edit a target, filled with the
+// target's settings as stored.
 //
 // This page is the one place the full destination URL and header
-// values are shown. It is reachable only through the
+// values are shown: an operator cannot correct a value they cannot
-// /hook/{sourceID} route group, which supplies RequireAuth and
+// see. It is reachable only through the /hook/{sourceID} route
-// NoCache, and only for a target of a webhook the session's user
+// group, which supplies RequireAuth and NoCache, and only for a
-// owns; masking (delivery.TargetView) is unchanged everywhere else.
+// target of a webhook the session's user owns; masking
+// (delivery.TargetView) is unchanged everywhere else. Do not fill a
+// form like this one on any other page.
 func (h *Handlers) HandleTargetEdit() http.HandlerFunc {
 	return func(w http.ResponseWriter, r *http.Request) {
 		webhook, target, ok := h.ownedTarget(w, r)
@@ -62,34 +58,19 @@ func (h *Handlers) HandleTargetEdit() http.HandlerFunc {
 			return
 		}
 
-		cfg, err := delivery.NewTargetConfigForm(target)
-		msg := ""
-
-		if err != nil {
-			// The error carries the parse failure, never the
-			// blob, so it is safe to log against the target id.
-			h.log.Warn(
-				"stored target config could not be read for editing",
-				"target_id", target.ID,
-				"error", err,
-			)
-
-			msg = configUnreadableMessage
-		}
-
 		form := targetFormInput{
 			Name:         target.Name,
-			URL:          cfg.URL,
+			URL:          target.URL,
-			Headers:      cfg.Headers,
+			Headers:      delivery.FormatTargetHeaders(target.Headers),
-			Timeout:      cfg.Timeout,
+			Timeout:      delivery.FormatTargetTimeout(target.TimeoutSeconds),
-			ForwardQuery: cfg.ForwardQuery,
+			ForwardQuery: target.ForwardQuery,
 			MaxAttempts:  strconv.Itoa(target.MaxAttempts),
-			Expiry:       cfg.Expiry,
+			Expiry:       formatArchiveExpiry(target.ArchiveExpiry),
-			Rotation:     cfg.Rotation,
+			Rotation:     target.ArchiveRotation,
 		}
 
 		h.renderTargetEdit(
-			w, r, webhook, target, form, msg, http.StatusOK,
+			w, r, webhook, target, form, "", http.StatusOK,
 		)
 	}
 }
@@ -125,11 +106,11 @@ func (h *Handlers) HandleTargetEditSubmit() http.HandlerFunc {
 // does, so an edited destination is SSRF-validated exactly as a new
 // one is.
 //
-// The target's type is not editable. Each type stores a different
+// The target's type is not editable. Each type uses different
-// configuration shape and its delivery history is recorded against
+// settings and its delivery history is recorded against the target
-// the target row, so changing the type of an existing target is
+// row, so changing the type of an existing target is really the
-// really the creation of a different one. The stored type decides
+// creation of a different one. The stored type decides which fields
-// which fields the form offers and which builder runs.
+// the form offers and which settings are set.
 func (h *Handlers) applyTargetEdit(
 	w http.ResponseWriter,
 	r *http.Request,
@@ -142,13 +123,7 @@ func (h *Handlers) applyTargetEdit(
 	// as stored, for the page shown again when the save is refused.
 	edited := *target
 
-	errMsg, err := h.setTargetFromForm(r.Context(), &edited, in)
+	errMsg := h.setTargetFromForm(r.Context(), &edited, in)
-	if err != nil {
-		h.serverError(w, r, "failed to encode target config", err)
-
-		return
-	}
-
 	if errMsg != "" {
 		h.renderTargetEdit(
 			w, r, webhook, target, in, errMsg, http.StatusBadRequest,
@@ -160,7 +135,7 @@ func (h *Handlers) applyTargetEdit(
 	// A new name renames the archive file before it is saved (see
 	// archive.Writers.Rename). If either step fails, it goes back to
 	// the name that is still stored.
-	err = h.renameTargetArchive(
+	err := h.renameTargetArchive(
 		target, webhook.Name, target.Name, edited.Name,
 	)
 	if err == nil {

internal/handlers/target_edit_test.go

@@ -2,19 +2,18 @@ package handlers_test
 
 import (
 	"context"
-	"encoding/json"
 	"net/http"
 	"net/http/httptest"
 	"net/url"
 	"strings"
 	"testing"
+	"time"
 
 	"github.com/go-chi/chi"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
 	"gorm.io/gorm/clause"
 	"sneak.berlin/go/webhooker/internal/database"
-	"sneak.berlin/go/webhooker/internal/delivery"
 )
 
 // The destinations the target edit tests configure. Both are literal
@@ -150,27 +149,6 @@ func storedTarget(
 	return target
 }
 
-// storedHTTPConfig reloads a target and parses its stored HTTP
-// configuration.
-func storedHTTPConfig(
-	t *testing.T,
-	env *sourceTestEnv,
-	targetID string,
-) delivery.HTTPTargetConfig {
-	t.Helper()
-
-	var cfg delivery.HTTPTargetConfig
-
-	require.NoError(
-		t,
-		json.Unmarshal(
-			[]byte(storedTarget(t, env, targetID).Config), &cfg,
-		),
-	)
-
-	return cfg
-}
-
 // editForm is the fully populated edit submission for an HTTP
 // target.
 func editForm(targetURL, headers, timeout string) url.Values {
@@ -197,12 +175,9 @@ func submitTargetEdit(
 	)
 }
 
-// TestHandleTargetCreate_Configuration covers the half of the gap
+// TestHandleTargetCreate_Configuration proves the add target form
-// that is not about editing at all: HTTPTargetConfig has carried
+// stores an HTTP target's headers and timeout, and leaves them empty
-// Headers and Timeout, and the delivery path has honoured them, but
+// when the form leaves them empty.
-// the create form wrote {"url":...} and nothing else, so a
-// destination needing an Authorization header could not be
-// configured through the UI at all.
 func TestHandleTargetCreate_Configuration(t *testing.T) {
 	t.Parallel()
 
@@ -213,9 +188,9 @@ func TestHandleTargetCreate_Configuration(t *testing.T) {
 		assertCreateStoresHeadersAndTimeout(t, env)
 	})
 
-	t.Run("without them keeps a url-only config", func(t *testing.T) {
+	t.Run("without them stores only the url", func(t *testing.T) {
 		t.Parallel()
-		assertCreateKeepsURLOnlyConfig(t, env)
+		assertCreateStoresOnlyTheURL(t, env)
 	})
 }
 
@@ -228,33 +203,31 @@ func assertCreateStoresHeadersAndTimeout(
 		t, env, editAuthHeader+"\nX-Tenant: acme\n", "12",
 	)
 
-	cfg := storedHTTPConfig(t, env, target.ID)
+	stored := storedTarget(t, env, target.ID)
 
-	assert.Equal(t, editOriginalURL, cfg.URL)
+	assert.Equal(t, editOriginalURL, stored.URL)
-	assert.Equal(t, 12, cfg.Timeout)
+	assert.Equal(t, 12, stored.TimeoutSeconds)
 	assert.Equal(
 		t,
 		map[string]string{
 			"Authorization": "Bearer " + editBearerSecret,
 			"X-Tenant":      "acme",
 		},
-		cfg.Headers,
+		stored.Headers,
 	)
 }
 
-// Without the new fields the stored shape must be the same
+func assertCreateStoresOnlyTheURL(
-// {"url":...} the create form wrote before they existed, so no
-// existing target's configuration is rewritten by this change.
-func assertCreateKeepsURLOnlyConfig(
 	t *testing.T, env *sourceTestEnv,
 ) {
 	t.Helper()
 
 	_, target := seedHTTPTarget(t, env, "", "")
 
-	assert.JSONEq(
+	assert.Equal(t, editOriginalURL, target.URL)
-		t, `{"url":"`+editOriginalURL+`"}`, target.Config,
+	assert.Empty(t, target.Headers)
-	)
+	assert.Zero(t, target.TimeoutSeconds)
+	assert.False(t, target.ForwardQuery)
 }
 
 // TestHandleTargetEditSubmit_Saves is the round trip the issue asks
@@ -299,13 +272,8 @@ func assertEditChangesDestination(
 	)
 	require.Equal(t, http.StatusSeeOther, w.Code, w.Body.String())
 
-	assert.Equal(
-		t,
-		editReplacedURL,
-		storedHTTPConfig(t, env, target.ID).URL,
-	)
-
 	reloaded := storedTarget(t, env, target.ID)
+	assert.Equal(t, editReplacedURL, reloaded.URL)
 	assert.Equal(t, "edited-name", reloaded.Name)
 	assert.Equal(t, 5, reloaded.MaxAttempts)
 	assert.Equal(
@@ -333,16 +301,16 @@ func assertEditRoundTripsHeadersAndTimeout(
 	)
 	require.Equal(t, http.StatusSeeOther, w.Code, w.Body.String())
 
-	cfg := storedHTTPConfig(t, env, target.ID)
+	stored := storedTarget(t, env, target.ID)
 
-	assert.Equal(t, 21, cfg.Timeout)
+	assert.Equal(t, 21, stored.TimeoutSeconds)
 	assert.Equal(
 		t,
 		map[string]string{
 			"Authorization": "Bearer rotated",
 			"X-Trace":       "on",
 		},
-		cfg.Headers,
+		stored.Headers,
 	)
 }
 
@@ -362,10 +330,10 @@ func assertEditClearingRemovesThem(
 	)
 	require.Equal(t, http.StatusSeeOther, w.Code, w.Body.String())
 
-	cfg := storedHTTPConfig(t, env, target.ID)
+	stored := storedTarget(t, env, target.ID)
 
-	assert.Empty(t, cfg.Headers)
+	assert.Empty(t, stored.Headers)
-	assert.Zero(t, cfg.Timeout)
+	assert.Zero(t, stored.TimeoutSeconds)
 }
 
 // Delivery attempts are offered only by the forms for target types
@@ -442,6 +410,90 @@ func TestHandleTargetEdit_CallsTheDatabaseTypeArchive(t *testing.T) {
 	assert.Contains(t, page, `class="label">Archive rotation</label>`)
 }
 
+// TestHandleTargetEdit_EveryType edits a target of each type: the edit
+// form starts on the settings the add target form stored, and saving
+// it stores the settings submitted.
+func TestHandleTargetEdit_EveryType(t *testing.T) {
+	t.Parallel()
+
+	env := setupSourceTest(t)
+
+	// created and edited are the add target form's and the edit
+	// form's fields, as query strings; shown is what the edit form
+	// must show of created; want is the settings edited stores.
+	cases := []struct {
+		targetType      database.TargetType
+		created, edited string
+		shown           []string
+		want            database.Target
+	}{
+		{
+			database.TargetTypeHTTP,
+			"url=" + editOriginalURL +
+				"&headers=X-Tenant:+acme&timeout=7&forward_query=on",
+			"url=" + editReplacedURL + "&timeout=9",
+			[]string{
+				`value="` + editOriginalURL + `"`,
+				"X-Tenant: acme",
+				`value="7"`,
+				`name="forward_query" value="on" checked`,
+			},
+			database.Target{
+				URL:            editReplacedURL,
+				Headers:        map[string]string{},
+				TimeoutSeconds: 9,
+			},
+		},
+		{
+			database.TargetTypeSlack,
+			"url=" + editOriginalURL,
+			"url=" + editReplacedURL,
+			[]string{`value="` + editOriginalURL + `"`},
+			database.Target{URL: editReplacedURL},
+		},
+		{
+			database.TargetTypeDatabase,
+			"expiry=720h&rotation=daily",
+			"expiry=24h&rotation=hourly",
+			[]string{
+				`<option value="720h" selected>`,
+				`<option value="daily" selected>`,
+			},
+			database.Target{
+				ArchiveExpiry:   24 * time.Hour,
+				ArchiveRotation: rotationHourly,
+			},
+		},
+		{database.TargetTypeLog, "", "", nil, database.Target{}},
+	}
+
+	for _, tc := range cases {
+		t.Run(string(tc.targetType), func(t *testing.T) {
+			t.Parallel()
+
+			webhook, target := addTargetThroughForm(
+				t, env, tc.targetType, tc.created,
+			)
+
+			page := targetEditPage(t, env, webhook.ID, target.ID)
+			for _, shown := range tc.shown {
+				assert.Contains(t, page, shown)
+			}
+
+			form, err := url.ParseQuery(tc.edited)
+			require.NoError(t, err)
+			form.Set("name", "edited")
+
+			w := submitTargetEdit(env, webhook.ID, target.ID, form)
+			require.Equal(t, http.StatusSeeOther, w.Code, w.Body.String())
+
+			got := storedTarget(t, env, target.ID)
+			assert.Equal(t, "edited", got.Name)
+			assert.Equal(t, tc.want, targetSettingsOf(got))
+		})
+	}
+}
+
 // TestHandleTarget_ForwardQuery covers the HTTP target's setting that
 // passes each event's query string on to it: the add target form
 // stores it checked, the edit form starts with it checked and turns it
@@ -467,7 +519,7 @@ func TestHandleTarget_ForwardQuery(t *testing.T) {
 
 	targets := targetsForWebhook(t, env.db, webhook.ID)
 	require.Len(t, targets, 1)
-	assert.True(t, storedHTTPConfig(t, env, targets[0].ID).ForwardQuery)
+	assert.True(t, storedTarget(t, env, targets[0].ID).ForwardQuery)
 
 	w = serveTarget(
 		env, http.MethodGet, targetsPath+"/"+targets[0].ID+"/edit", nil,
@@ -479,7 +531,7 @@ func TestHandleTarget_ForwardQuery(t *testing.T) {
 
 	w = submitTargetEdit(env, webhook.ID, targets[0].ID, edit)
 	require.Equal(t, http.StatusSeeOther, w.Code, w.Body.String())
-	assert.False(t, storedHTTPConfig(t, env, targets[0].ID).ForwardQuery)
+	assert.False(t, storedTarget(t, env, targets[0].ID).ForwardQuery)
 
 	edit.Set("url", editBlockedURL)
 	edit.Set("forward_query", "on")
@@ -568,7 +620,7 @@ func assertEditRejectsBlockedDestination(
 	assert.Contains(t, w.Body.String(), "Invalid target URL")
 	assert.Equal(
 		t, editOriginalURL,
-		storedHTTPConfig(t, env, target.ID).URL,
+		storedTarget(t, env, target.ID).URL,
 		"a rejected edit must leave the stored config alone",
 	)
 }
@@ -597,9 +649,9 @@ func assertEditIgnoresQueryString(
 
 	assert.Equal(t, http.StatusBadRequest, w.Code)
 
-	cfg := storedHTTPConfig(t, env, target.ID)
+	stored := storedTarget(t, env, target.ID)
-	assert.Equal(t, editOriginalURL, cfg.URL)
+	assert.Equal(t, editOriginalURL, stored.URL)
-	assert.Empty(t, cfg.Headers)
+	assert.Empty(t, stored.Headers)
 }
 
 func assertEditRejectsHeaders(
@@ -617,7 +669,7 @@ func assertEditRejectsHeaders(
 	assert.Equal(t, http.StatusBadRequest, w.Code)
 	assert.Contains(t, w.Body.String(), "Invalid headers")
 	assert.Empty(
-		t, storedHTTPConfig(t, env, target.ID).Headers,
+		t, storedTarget(t, env, target.ID).Headers,
 		"a rejected header must not be stored",
 	)
 }
@@ -637,7 +689,7 @@ func assertEditRejectsTimeout(
 	assert.Equal(t, http.StatusBadRequest, w.Code)
 	assert.Contains(t, w.Body.String(), "Invalid timeout")
 	assert.Equal(
-		t, 9, storedHTTPConfig(t, env, target.ID).Timeout,
+		t, 9, storedTarget(t, env, target.ID).TimeoutSeconds,
 		"a rejected timeout must leave the stored one alone",
 	)
 }
@@ -757,7 +809,7 @@ func assertTargetOfAnotherWebhook404s(
 
 	assert.Equal(
 		t, editOriginalURL,
-		storedHTTPConfig(t, env, target.ID).URL,
+		storedTarget(t, env, target.ID).URL,
 	)
 }
 
@@ -778,7 +830,7 @@ func assertWebhookOfAnotherUser404s(
 
 	target := seedConfiguredTarget(
 		t, env.db, other.ID, database.TargetTypeHTTP,
-		`{"url":"`+editOriginalURL+`"}`,
+		database.Target{URL: editOriginalURL},
 	)
 
 	w := serveTarget(

internal/handlers/target_list.go

@@ -243,10 +243,7 @@ func readTargetDeliveries(
 func (h *Handlers) archiveFileView(
 	webhook *database.Webhook, target *database.Target, now time.Time,
 ) *ArchiveFileView {
-	current, err := archive.PathAt(h.dbMgr, webhook, target, now)
+	current := archive.PathAt(h.dbMgr, webhook, target, now)
-	if err != nil {
-		return h.archiveUnreadable(&ArchiveFileView{}, target, err)
-	}
 
 	view := &ArchiveFileView{Name: filepath.Base(current)}
 

internal/handlers/target_toggle_test.go

@@ -60,7 +60,5 @@ func TestHandleTargetToggle_DoesNotUndoAnEdit(t *testing.T) {
 	assert.False(t, stored.Active)
 	assert.Equal(t, "edited-name", stored.Name)
 	assert.Equal(t, 5, stored.MaxAttempts)
-	assert.Equal(
+	assert.Equal(t, editReplacedURL, stored.URL)
-		t, editReplacedURL, storedHTTPConfig(t, env, tgt.ID).URL,
-	)
 }

internal/handlers/webhook.go

@@ -2,14 +2,11 @@ package handlers
 
 import (
 	"encoding/json"
-	"fmt"
 	"io"
 	"net/http"
 
 	"github.com/go-chi/chi"
-	"gorm.io/gorm"
 	"sneak.berlin/go/webhooker/internal/database"
-	"sneak.berlin/go/webhooker/internal/delivery"
 	"sneak.berlin/go/webhooker/internal/middleware"
 )
 
@@ -70,8 +67,9 @@ func (h *Handlers) HandleWebhook() http.HandlerFunc {
 	}
 }
 
-// processWebhookRequest reads the body, serializes headers, loads
+// processWebhookRequest reads the request into an event and has the
-// targets, and delivers the event.
+// delivery engine store it, with a delivery for each of the webhook's
+// active targets, and answers the sender.
 //
 // Nothing about the request itself is authenticated: the entrypoint
 // UUID in the path is the credential, and reaching here means it
@@ -93,30 +91,24 @@ func (h *Handlers) processWebhookRequest(
 		return
 	}
 
-	targets, err := h.loadActiveTargets(entrypoint.WebhookID)
+	event := &database.Event{
+		WebhookID:    entrypoint.WebhookID,
+		EntrypointID: entrypoint.ID,
+		Method:       r.Method,
+		RawQuery:     r.URL.RawQuery,
+		Headers:      string(headersJSON),
+		ContentType:  r.Header.Get("Content-Type"),
+		Body:         string(body),
+	}
+
+	deliveries, err := h.engine.StoreEvent(event)
 	if err != nil {
-		h.receiverError(w, "failed to query targets", err)
+		h.receiverError(w, "failed to store webhook event", err)
 
 		return
 	}
 
-	h.createAndDeliverEvent(
+	h.finishWebhookResponse(w, event, entrypoint, deliveries)
-		w, r, entrypoint, body, headersJSON, targets,
-	)
-}
-
-// loadActiveTargets returns all active targets for a webhook.
-func (h *Handlers) loadActiveTargets(
-	webhookID string,
-) ([]database.Target, error) {
-	var targets []database.Target
-
-	err := h.db.DB().Where(
-		"webhook_id = ? AND active = ?",
-		webhookID, true,
-	).Find(&targets).Error
-
-	return targets, err
 }
 
 // lookupEntrypoint finds an entrypoint by UUID path.
@@ -177,28 +169,6 @@ func (h *Handlers) readWebhookBody(
 	return body, true
 }
 
-// createAndDeliverEvent stores the received event, fans it out to the
-// webhook's targets, and answers the sender.
-func (h *Handlers) createAndDeliverEvent(
-	w http.ResponseWriter,
-	r *http.Request,
-	entrypoint database.Entrypoint,
-	body, headersJSON []byte,
-	targets []database.Target,
-) {
-	event, tasks, err := h.createAndFanOut(
-		requestEventSource(r, entrypoint, headersJSON, body),
-		targets,
-	)
-	if err != nil {
-		h.receiverError(w, "failed to store webhook event", err)
-
-		return
-	}
-
-	h.finishWebhookResponse(w, event, entrypoint, tasks)
-}
-
 // receiverError logs an error and answers the sender with a plain-text
 // 500. The receiver's answers are for programs, so it never sends the
 // error page the web UI uses.
@@ -212,172 +182,19 @@ func (h *Handlers) receiverError(
 	)
 }
 
-// eventSource carries the fields a new event is built from. The
+// finishWebhookResponse logs the stored event, with how many
-// receiver fills it from the live request; the resubmit handler fills
+// deliveries it has, and writes the HTTP response.
-// it from a stored event. Both then go through createAndFanOut, so an
-// event is constructed and fanned out in one place however it entered
-// the system.
-type eventSource struct {
-	WebhookID    string
-	EntrypointID string
-	Method       string
-	RawQuery     string
-	HeadersJSON  string
-	ContentType  string
-	Body         []byte
-
-	// ResubmittedFromID names the event this one copies. Only the
-	// resubmit path sets it.
-	ResubmittedFromID *string
-}
-
-// event builds the row this source stores.
-func (s eventSource) event() *database.Event {
-	return &database.Event{
-		WebhookID:         s.WebhookID,
-		EntrypointID:      s.EntrypointID,
-		Method:            s.Method,
-		RawQuery:          s.RawQuery,
-		Headers:           s.HeadersJSON,
-		Body:              string(s.Body),
-		BodyBytes:         int64(len(s.Body)),
-		ContentType:       s.ContentType,
-		ResubmittedFromID: s.ResubmittedFromID,
-	}
-}
-
-// requestEventSource describes the event a live receiver request
-// stores.
-func requestEventSource(
-	r *http.Request,
-	entrypoint database.Entrypoint,
-	headersJSON, body []byte,
-) eventSource {
-	return eventSource{
-		WebhookID:    entrypoint.WebhookID,
-		EntrypointID: entrypoint.ID,
-		Method:       r.Method,
-		RawQuery:     r.URL.RawQuery,
-		HeadersJSON:  string(headersJSON),
-		ContentType:  r.Header.Get("Content-Type"),
-		Body:         body,
-	}
-}
-
-// createAndFanOut writes the event and one pending delivery per target,
-// and adds them to the webhook's running totals, in a single
-// transaction, then hands the tasks to the delivery engine. Every
-// event is created here, received or resubmitted, so a resubmitted
-// event is retried, SSRF-guarded and circuit-broken exactly as a
-// received one is. Per-delivery replay is the one other path that
-// creates a delivery: it adds one to an existing event without
-// coming through here.
-//
-// The tasks are returned as well as queued, so a caller can report how
-// many targets the event went to.
-func (h *Handlers) createAndFanOut(
-	src eventSource,
-	targets []database.Target,
-) (*database.Event, []delivery.Task, error) {
-	webhookDB, err := h.dbMgr.GetDB(src.WebhookID)
-	if err != nil {
-		return nil, nil, fmt.Errorf(
-			"getting webhook database: %w", err,
-		)
-	}
-
-	tx := webhookDB.Begin()
-	if tx.Error != nil {
-		return nil, nil, fmt.Errorf(
-			"beginning transaction: %w", tx.Error,
-		)
-	}
-
-	event := src.event()
-
-	err = tx.Create(event).Error
-	if err != nil {
-		tx.Rollback()
-
-		return nil, nil, fmt.Errorf("creating event: %w", err)
-	}
-
-	tasks, err := buildDeliveryTasks(
-		tx, event, targets, inlineBody(src.Body),
-	)
-	if err != nil {
-		tx.Rollback()
-
-		return nil, nil, err
-	}
-
-	err = database.AddEventTotals(tx, database.EventTotals{
-		Events: 1, LastEventAt: &event.CreatedAt,
-	})
-	if err != nil {
-		tx.Rollback()
-
-		return nil, nil, err
-	}
-
-	// A resubmitted copy did not arrive on its entrypoint's URL, so it
-	// leaves the entrypoint's last event as it is.
-	if src.ResubmittedFromID == nil {
-		err = database.AddEntrypointTotals(tx, database.EntrypointTotals{
-			EntrypointID: event.EntrypointID, LastEventAt: event.CreatedAt,
-		})
-		if err != nil {
-			tx.Rollback()
-
-			return nil, nil, err
-		}
-	}
-
-	err = tx.Commit().Error
-	if err != nil {
-		return nil, nil, fmt.Errorf(
-			"committing transaction: %w", err,
-		)
-	}
-
-	// Counted here, after the commit: an event exists once it is
-	// durably stored, which is what the delivery counters are
-	// compared against on a dashboard. A resubmitted event counts
-	// too, because it produces deliveries that the delivery side
-	// counts; the resubmit counter is what separates the two.
-	h.mtr.EventReceived()
-
-	if len(tasks) > 0 {
-		h.notifier.Notify(tasks)
-	}
-
-	return event, tasks, nil
-}
-
-// inlineBody returns a pointer to body as a string if it fits
-// within the inline size limit, or nil otherwise.
-func inlineBody(body []byte) *string {
-	if len(body) < delivery.MaxInlineBodySize {
-		s := string(body)
-
-		return &s
-	}
-
-	return nil
-}
-
-// finishWebhookResponse logs the event and writes the HTTP response.
 func (h *Handlers) finishWebhookResponse(
 	w http.ResponseWriter,
 	event *database.Event,
 	entrypoint database.Entrypoint,
-	tasks []delivery.Task,
+	deliveries int,
 ) {
 	h.log.Info("webhook event created",
 		"event_id", event.ID,
 		"webhook_id", entrypoint.WebhookID,
 		"entrypoint_id", entrypoint.ID,
-		"target_count", len(tasks),
+		"target_count", deliveries,
 	)
 
 	w.WriteHeader(http.StatusOK)
@@ -389,59 +206,3 @@ func (h *Handlers) finishWebhookResponse(
 		)
 	}
 }
-
-// buildDeliveryTasks creates one pending delivery per target in the
-// transaction, adds each to its target's totals, and returns the tasks
-// for the delivery engine. The caller owns the transaction and rolls
-// it back on error.
-func buildDeliveryTasks(
-	tx *gorm.DB,
-	event *database.Event,
-	targets []database.Target,
-	bodyPtr *string,
-) ([]delivery.Task, error) {
-	tasks := make([]delivery.Task, 0, len(targets))
-
-	for i := range targets {
-		dlv := &database.Delivery{
-			EventID:  event.ID,
-			TargetID: targets[i].ID,
-			Status:   database.DeliveryStatusPending,
-		}
-
-		err := tx.Create(dlv).Error
-		if err != nil {
-			return nil, fmt.Errorf(
-				"creating delivery for target %s: %w",
-				targets[i].ID, err,
-			)
-		}
-
-		err = database.AddTargetTotals(tx, database.TargetTotals{
-			TargetID: targets[i].ID, Deliveries: 1,
-		})
-		if err != nil {
-			return nil, err
-		}
-
-		tasks = append(tasks, delivery.Task{
-			DeliveryID:   dlv.ID,
-			EventID:      event.ID,
-			WebhookID:    event.WebhookID,
-			EntrypointID: event.EntrypointID,
-			TargetID:     targets[i].ID,
-			TargetName:   targets[i].Name,
-			TargetType:   targets[i].Type,
-			TargetConfig: targets[i].Config,
-			MaxAttempts:  targets[i].MaxAttempts,
-			Method:       event.Method,
-			RawQuery:     event.RawQuery,
-			Headers:      event.Headers,
-			ContentType:  event.ContentType,
-			Body:         bodyPtr,
-			AttemptNum:   1,
-		})
-	}
-
-	return tasks, nil
-}

internal/handlers/webhook_create.go

@@ -115,13 +115,7 @@ func (h *Handlers) HandleSourceCreateSubmit() http.HandlerFunc {
 			return
 		}
 
-		targets, errMsg, err := h.newWebhookTargets(r.Context(), in)
+		targets, errMsg := h.newWebhookTargets(r.Context(), in)
-		if err != nil {
-			h.serverError(w, r, "failed to encode target config", err)
-
-			return
-		}
-
 		if errMsg != "" {
 			refuse(errMsg)
 
@@ -147,7 +141,7 @@ func (h *Handlers) HandleSourceCreateSubmit() http.HandlerFunc {
 func (h *Handlers) newWebhookTargets(
 	ctx context.Context,
 	in sourceFormInput,
-) ([]*database.Target, string, error) {
+) ([]*database.Target, string) {
 	var requested []targetFormInput
 
 	if in.HTTPURL != "" {
@@ -170,15 +164,15 @@ func (h *Handlers) newWebhookTargets(
 	targets := make([]*database.Target, 0, len(requested))
 
 	for _, form := range requested {
-		target, errMsg, err := h.newTarget(ctx, "", form)
+		target, errMsg := h.newTarget(ctx, "", form)
-		if err != nil || errMsg != "" {
+		if errMsg != "" {
-			return nil, errMsg, err
+			return nil, errMsg
 		}
 
 		targets = append(targets, target)
 	}
 
-	return targets, "", nil
+	return targets, ""
 }
 
 // createWebhookWithEntrypoint creates a webhook, its default

internal/handlers/webhook_detail.go

@@ -109,7 +109,7 @@ func (h *Handlers) renderSourceDetail(
 	data := map[string]any{
 		tmplKeyWebhook: &webhook,
 		// Targets are projected to a display-safe view: a
-		// target's stored config blob holds a credential, and it
+		// target's URL and headers hold a credential, and they
 		// must never reach a template.
 		"Entrypoints":     entrypointViews,
 		"Targets":         h.targetRows(&webhook, targets),

internal/handlers/webhook_stats_test.go

@@ -153,7 +153,7 @@ func seedStatsHistory(
 
 	first := seedConfiguredTarget(
 		t, db, wh.ID, database.TargetTypeHTTP,
-		`{"url":"`+replayTargetURL+`"}`,
+		database.Target{URL: replayTargetURL},
 	)
 	second := seedTarget(t, db, wh.ID, database.TargetTypeLog)
 

internal/handlers/webhook_test.go

@@ -206,3 +206,87 @@ func receivedLine(t *testing.T, buf *bytes.Buffer) map[string]any {
 
 	return found[0]
 }
+
+// TestHandleWebhook_StoresTheEvent proves an accepted request is
+// answered with the receiver's 200 and body, and that the event is
+// stored with a pending delivery to the webhook's active target.
+func TestHandleWebhook_StoresTheEvent(t *testing.T) {
+	t.Parallel()
+
+	var (
+		h     *handlers.Handlers
+		db    *database.Database
+		dbMgr *database.WebhookDBManager
+	)
+
+	app := newTestApp(t, &h, &db, &dbMgr)
+	app.RequireStart()
+
+	t.Cleanup(app.RequireStop)
+
+	webhook := seedWebhook(t, db)
+	entrypoint := seedEntrypoint(t, db, webhook.ID)
+	target := seedConfiguredTarget(
+		t, db, webhook.ID, database.TargetTypeHTTP,
+		database.Target{URL: replayTargetURL},
+	)
+
+	w := httptest.NewRecorder()
+	h.HandleWebhook().ServeHTTP(w, postRequest(
+		"/h/"+entrypoint.Path, nil,
+		map[string]string{"uuid": entrypoint.Path},
+	))
+
+	require.Equal(t, http.StatusOK, w.Code)
+	assert.JSONEq(t, `{"status":"ok"}`, w.Body.String())
+
+	webhookDB, err := dbMgr.GetDB(webhook.ID)
+	require.NoError(t, err)
+
+	events := listEvents(t, webhookDB)
+	require.Len(t, events, 1)
+	assert.Equal(t, entrypoint.ID, events[0].EntrypointID)
+
+	deliveries := listDeliveries(t, webhookDB, events[0].ID)
+	require.Len(t, deliveries, 1)
+	assert.Equal(t, target.ID, deliveries[0].TargetID)
+	assert.Equal(t, database.DeliveryStatusPending, deliveries[0].Status)
+}
+
+// TestHandleWebhook_FailedStoreAnswersPlainError proves that an event
+// the engine cannot store is answered with the receiver's plain-text
+// 500, and that nothing of it is left stored.
+func TestHandleWebhook_FailedStoreAnswersPlainError(t *testing.T) {
+	t.Parallel()
+
+	var (
+		h     *handlers.Handlers
+		db    *database.Database
+		dbMgr *database.WebhookDBManager
+	)
+
+	app := newTestApp(t, &h, &db, &dbMgr)
+	app.RequireStart()
+
+	t.Cleanup(app.RequireStop)
+
+	webhook := seedWebhook(t, db)
+	entrypoint := seedEntrypoint(t, db, webhook.ID)
+
+	// Without its event totals table the webhook's database refuses
+	// the totals write, which comes after the event row.
+	webhookDB, err := dbMgr.GetDB(webhook.ID)
+	require.NoError(t, err)
+	require.NoError(t,
+		webhookDB.Migrator().DropTable(&database.EventTotals{}))
+
+	w := httptest.NewRecorder()
+	h.HandleWebhook().ServeHTTP(w, postRequest(
+		"/h/"+entrypoint.Path, nil,
+		map[string]string{"uuid": entrypoint.Path},
+	))
+
+	assert.Equal(t, http.StatusInternalServerError, w.Code)
+	assert.Equal(t, "Internal server error\n", w.Body.String())
+	assert.Empty(t, listEvents(t, webhookDB))
+}

internal/resetpw/resetpw_test.go

@@ -131,10 +131,6 @@ func run(
 	return code, stdout.String(), stderr.String()
 }
 
-type noopNotifier struct{}
-
-func (n *noopNotifier) Notify([]delivery.Task) {}
-
 type noopArchives struct {
 	renameMu sync.Mutex
 }
@@ -190,7 +186,12 @@ func newServerApp(
 			database.NewWebhookDBManager,
 			healthcheck.New,
 			session.New,
-			func() delivery.Notifier { return &noopNotifier{} },
+			archive.NewWriters,
+			// The engine is built on a lifecycle that is never started,
+			// so no worker runs.
+			func(p delivery.EngineParams) *delivery.Engine {
+				return delivery.New(fxtest.NewLifecycle(t), p)
+			},
 			func() archive.Archives { return &noopArchives{} },
 			func() delivery.CircuitBreakers {
 				return &noopCircuitBreakers{}

internal/server/alpine_browser_test.go

@@ -1183,16 +1183,26 @@ func checkNewWebhookTargets(
 ) {
 	t.Helper()
 
-	// Each value the pruning choice submits, after an empty one that
+	// Each value the pruning choice submits and the expiry it stores,
-	// stands for archive left off.
+	// after an empty one that stands for archive left off.
-	expiries := []string{
+	expiries := []struct {
-		"", "never", "1h", "12h", "24h", "720h", "2160h", "8760h",
+		value  string
+		stored time.Duration
+	}{
+		{"", 0},
+		{"never", 0},
+		{"1h", time.Hour},
+		{"12h", 12 * time.Hour},
+		{"24h", 24 * time.Hour},
+		{"720h", 720 * time.Hour},
+		{"2160h", 2160 * time.Hour},
+		{"8760h", 8760 * time.Hour},
 	}
 
 	for _, httpURL := range []string{"", publicTargetURL} {
 		for _, expiry := range expiries {
-			name := "url=" + httpURL + " archive=" + expiry
+			name := "url=" + httpURL + " archive=" + expiry.value
-			want := map[database.TargetType]string{}
+			want := map[database.TargetType]database.Target{}
 
 			require.NoError(t, chromedp.Run(
 				ctx,
@@ -1205,10 +1215,12 @@ func checkNewWebhookTargets(
 					"#http_url", httpURL, chromedp.ByQuery,
 				)))
 
-				want[database.TargetTypeHTTP] = `{"url":"` + httpURL + `"}`
+				want[database.TargetTypeHTTP] = database.Target{
+					URL: httpURL, Headers: map[string]string{},
+				}
 			}
 
-			if expiry != "" {
+			if expiry.value != "" {
 				// The choice showing moves Create down, so it is
 				// waited for before Create is clicked.
 				click(ctx, t, archiveBox)
@@ -1216,29 +1228,30 @@ func checkNewWebhookTargets(
 					"%s: checking archive does not show the pruning choice",
 					name)
 				require.NoError(t, chromedp.Run(ctx, chromedp.SetValue(
-					pruningChoice, expiry, chromedp.BySearch,
+					pruningChoice, expiry.value, chromedp.BySearch,
 				)))
 
 				// The rotation choice is left on none.
-				want[database.TargetTypeDatabase] = `{"expiry":"` + expiry +
+				want[database.TargetTypeDatabase] = database.Target{
-					`","rotation":"none"}`
+					ArchiveExpiry: expiry.stored, ArchiveRotation: "none",
+				}
 			}
 
 			clickAndLoad(ctx, t, createButton)
 			require.Truef(t, shown(ctx, `//h1[text()="`+name+`"]`),
 				"%s: the new webhook's page does not open", name)
 
-			assert.Equalf(t, want, targetConfigs(t, env, name),
+			assert.Equalf(t, want, targetSettings(t, env, name),
 				"%s: the webhook does not have the targets asked for", name)
 		}
 	}
 }
 
-// targetConfigs reads the targets of the webhook named name, and
+// targetSettings reads the targets of the webhook named name, and
-// returns each one's stored configuration by its type.
+// returns each one's stored settings by its type.
-func targetConfigs(
+func targetSettings(
 	t *testing.T, env *testEnv, name string,
-) map[database.TargetType]string {
+) map[database.TargetType]database.Target {
 	t.Helper()
 
 	var (
@@ -1251,12 +1264,19 @@ func targetConfigs(
 	require.NoError(t, env.db.DB().
 		Where("webhook_id = ?", webhook.ID).Find(&targets).Error)
 
-	configs := map[database.TargetType]string{}
+	settings := map[database.TargetType]database.Target{}
 	for _, target := range targets {
-		configs[target.Type] = target.Config
+		settings[target.Type] = database.Target{
+			URL:             target.URL,
+			Headers:         target.Headers,
+			TimeoutSeconds:  target.TimeoutSeconds,
+			ForwardQuery:    target.ForwardQuery,
+			ArchiveExpiry:   target.ArchiveExpiry,
+			ArchiveRotation: target.ArchiveRotation,
+		}
 	}
 
-	return configs
+	return settings
 }
 
 // checkRefusedNewWebhook submits the new webhook page with archive

internal/server/routes.go

@@ -311,7 +311,7 @@ func (s *Server) setupSourceRoutes() {
 		r.Post("/targets", s.h.HandleTargetCreate())
 		// The edit form is the one page that renders a target's
 		// destination URL and header values in full; see
-		// delivery.TargetConfigForm. It belongs to this group for
+		// Handlers.HandleTargetEdit. It belongs to this group for
 		// its RequireAuth and NoCache, which are what keep that
 		// exception from reaching an unauthenticated request or a
 		// shared cache.

internal/server/routes_test.go

@@ -48,10 +48,6 @@ const (
 	metricsAuthValue = "s3cret"
 )
 
-type noopNotifier struct{}
-
-func (n *noopNotifier) Notify([]delivery.Task) {}
-
 // noopArchives satisfies handlers.New's archive.Archives
 // dependency. No test here checks what gets evicted or renamed, so
 // it records nothing. Its rename lock is a plain mutex.
@@ -145,7 +141,12 @@ func newTestEnvWithConfig(
 			database.NewWebhookDBManager,
 			healthcheck.New,
 			session.New,
-			func() delivery.Notifier { return &noopNotifier{} },
+			archive.NewWriters,
+			// The engine is built on a lifecycle that is never started,
+			// so no worker runs and nothing is sent anywhere.
+			func(p delivery.EngineParams) *delivery.Engine {
+				return delivery.New(fxtest.NewLifecycle(t), p)
+			},
 			func() archive.Archives { return &noopArchives{} },
 			func() delivery.CircuitBreakers {
 				return &noopCircuitBreakers{}
@@ -414,7 +415,7 @@ func (e *testEnv) seedTarget(
 		Name:        "routed-target",
 		Type:        database.TargetTypeHTTP,
 		Active:      true,
-		Config:      `{"url":"http://93.184.216.34/hook"}`,
+		URL:         "http://93.184.216.34/hook",
 		MaxAttempts: 1,
 	}