Update golangci-lint to v2.12.2 with canonical config

Bump the golangci-lint Docker image pin in Dockerfile and the
release-archive sha256 pins in script/bootstrap from 2.11.3 to
2.12.2, and replace .golangci.yml with the canonical config. The
canonical config moves lll/funlen/cyclop/dupl settings from the
top-level linters-settings key (ignored by the v2 schema) to
linters.settings, so those thresholds now actually apply.

Fix all findings the newly applied thresholds surfaced:

- lll: wrap or shorten seven over-length lines (struct tag
  comments, test logger construction, a func signature, and a
  nosec comment)
- goconst: use http.MethodPost/http.MethodPut and new shared
  constants for repeated test strings; add tmplKeyError and
  tmplKeyWebhook constants for template data keys in handlers
- dupl: merge buildHTTPTargetConfig and buildSlackTargetConfig
  into a parameterized buildURLTargetConfig; drop the duplicate
  iWebhookDB test helper in favor of testWebhookDB; extract
  shared helpers in middleware and session tests

.golangci.yml

@@ -1,5 +1,9 @@
 version: "2"
 
+# Config schema uses the golangci-lint v2 layout (settings live under
+# linters.settings, not top-level linters-settings) so that the
+# thresholds below are actually applied by golangci-lint >= v2.
+
 run:
   timeout: 5m
   modules-download-mode: readonly
@@ -14,19 +18,17 @@ linters:
     - wsl              # Deprecated, replaced by wsl_v5
     - wrapcheck        # Too verbose for internal packages
     - varnamelen       # Short names like db, id are idiomatic Go
-
+  settings:
-linters-settings:
+    lll:
-  lll:
+      line-length: 88
-    line-length: 88
+    funlen:
-  funlen:
+      lines: 80
-    lines: 80
+      statements: 50
-    statements: 50
+    cyclop:
-  cyclop:
+      max-complexity: 15
-    max-complexity: 15
+    dupl:
-  dupl:
+      threshold: 100
-    threshold: 100
 
 issues:
-  exclude-use-default: false
   max-issues-per-linter: 0
   max-same-issues: 0

Dockerfile

@@ -1,8 +1,8 @@
 # Lint stage
-# golangci/golangci-lint:v2.11.3 (Debian-based), 2026-03-17
+# golangci/golangci-lint:v2.12.2 (Debian-based), 2026-08-07
 # Using Debian-based image because mattn/go-sqlite3 (CGO) does not
 # compile on Alpine musl (off64_t is a glibc type).
-FROM golangci/golangci-lint:v2.11.3@sha256:e838e8ab68aaefe83e2408691510867ade9329c0e0b895a3fb35eb93d1c2a4ba AS lint
+FROM golangci/golangci-lint:v2.12.2@sha256:5cceeef04e53efe1470638d4b4b4f5ceefd574955ab3941b2d9a68a8c9ad5240 AS lint
 
 RUN apt-get update && apt-get install -y --no-install-recommends make && rm -rf /var/lib/apt/lists/*
 

README.md

@@ -363,10 +363,12 @@ events should be forwarded.
   greater than 0, failed deliveries are retried with exponential backoff
   up to `max_retries` attempts, protected by a per-target circuit
   breaker.
-- **`database`** — Confirm the event is stored in the webhook's
+- **`database`** — Archive the full event as a row into a separate
-  per-webhook database (no external delivery). Since events are always
+  per-webhook archive database (`archive-{webhookID}.db`) for long-term
-  written to the per-webhook DB on ingestion, this target marks delivery
+  retention, with an optional creation-validated expiry (default: keep
-  as immediately successful. Useful for ensuring durable event archival.
+  forever). No external delivery and no retries; an archive write
+  failure fails the delivery. See the database target section under
+  "Per-Webhook Event Databases" for the full semantics.
 - **`log`** — Write the event to the application log (stdout). Useful
   for debugging.
 
@@ -512,11 +514,22 @@ This separation provides:
   page cache, and its own lock, so concurrent event ingestion across
   webhooks won't contend.
 
-The **database target type** leverages this architecture: since events
+The **database target type** builds on this architecture to provide
-are already stored in the per-webhook database by design, the database
+long-term archiving, separate from the per-webhook event database (which
-target simply marks the delivery as immediately successful. The
+may prune events under its own retention). Delivering to a database
-per-webhook DB IS the dedicated event database — that's the whole point
+target writes the full event — body, headers, method, content type, and
-of the database target type.
+webhook/entrypoint/event identifiers — as a row into a dedicated archive
+database, `archive-{webhookID}.db`, stored under the data directory
+beside the event database. After each write the archive handle is closed
+and reopened, debounced to at most once per second, so an operator can
+move the archive file away for offline archiving without stopping the
+service; a moved or removed archive file is recreated automatically on
+the next write. An optional `expiry` in the target's config JSON (e.g.
+`{"expiry":"720h"}`) is validated when the target is created — the
+default (unset or the literal `never`) keeps rows forever — and rows
+older than the expiry are pruned each time the archive is (re)opened. An
+archive write failure is never silent success: the delivery records a
+failed attempt with the error and is marked failed.
 
 The **Slack target type** sends webhook events as formatted messages to
 any Slack-compatible incoming webhook URL (works with Slack, Mattermost,

TODO.md

@@ -28,6 +28,11 @@ databases currently grow without bound.
 
 # Completed Steps
 
+- 2026-08-07 Update golangci-lint to v2.12.2 (Docker image digest in
+  `Dockerfile`, release-archive sha256 pins in `script/bootstrap`),
+  adopt the canonical `.golangci.yml` (v2 `linters.settings` layout so
+  `lll`/`funlen`/`cyclop`/`dupl` thresholds actually apply), and fix
+  all newly surfaced lint findings
 - 2026-07-07 Adopted scripts-to-rule-them-all: `script/` entrypoints,
   Makefile shims, README Entrypoints section
 - 2026-03-25 pin golangci-lint Docker image for linting (#55)

cmd/webhooker/main.go

@@ -34,6 +34,7 @@ func main() {
 			config.New,
 			database.New,
 			database.NewWebhookDBManager,
+			database.NewRetentionReaper,
 			healthcheck.New,
 			session.New,
 			handlers.New,
@@ -44,6 +45,13 @@ func main() {
 			func(e *delivery.Engine) delivery.Notifier { return e },
 			server.New,
 		),
-		fx.Invoke(func(*server.Server, *delivery.Engine) {}),
+		fx.Invoke(
+			func(
+				*server.Server,
+				*delivery.Engine,
+				*database.RetentionReaper,
+			) {
+			},
+		),
 	).Run()
 }

internal/config/config.go

@@ -8,6 +8,7 @@ import (
 	"os"
 	"strconv"
 	"strings"
+	"time"
 
 	"go.uber.org/fx"
 	"sneak.berlin/go/webhooker/internal/globals"
@@ -26,6 +27,10 @@ const (
 
 	// defaultPort is the default HTTP listen port.
 	defaultPort = 8080
+
+	// defaultRetentionSweepInterval is how often the retention
+	// reaper deletes events older than each webhook's RetentionDays.
+	defaultRetentionSweepInterval = time.Hour
 )
 
 // ErrInvalidEnvironment is returned when WEBHOOKER_ENVIRONMENT
@@ -51,8 +56,12 @@ type Config struct {
 	MetricsUsername string
 	Port            int
 	SentryDSN       string
-	params          *ConfigParams
+
-	log             *slog.Logger
+	// RetentionSweepInterval is how often the retention reaper runs.
+	RetentionSweepInterval time.Duration
+
+	params *ConfigParams
+	log    *slog.Logger
 }
 
 // IsDev returns true if running in development environment.
@@ -95,6 +104,30 @@ func envInt(key string, defaultValue int) int {
 	return defaultValue
 }
 
+// envDuration returns the value of the named environment variable
+// parsed as a Go duration (e.g. "1h", "30m"). Returns defaultValue if
+// not set. If the variable is set but cannot be parsed, it returns a
+// wrapped error naming the key and the bad value, so startup fails
+// loudly rather than silently falling back to the default.
+func envDuration(
+	key string,
+	defaultValue time.Duration,
+) (time.Duration, error) {
+	v := os.Getenv(key)
+	if v == "" {
+		return defaultValue, nil
+	}
+
+	d, err := time.ParseDuration(v)
+	if err != nil {
+		return 0, fmt.Errorf(
+			"invalid duration for %s: %q: %w", key, v, err,
+		)
+	}
+
+	return d, nil
+}
+
 // New creates a Config by reading environment variables.
 //
 //nolint:revive // lc parameter is required by fx even if unused.
@@ -118,18 +151,30 @@ func New(lc fx.Lifecycle, params ConfigParams) (*Config, error) {
 		)
 	}
 
+	// Parse the retention sweep interval; a set-but-unparseable value
+	// is a hard error so fx aborts startup rather than silently using
+	// the default.
+	retentionSweepInterval, err := envDuration(
+		"RETENTION_SWEEP_INTERVAL",
+		defaultRetentionSweepInterval,
+	)
+	if err != nil {
+		return nil, err
+	}
+
 	// Load configuration values from environment variables
 	s := &Config{
-		DataDir:         envString("DATA_DIR"),
+		DataDir:                envString("DATA_DIR"),
-		Debug:           envBool("DEBUG", false),
+		Debug:                  envBool("DEBUG", false),
-		MaintenanceMode: envBool("MAINTENANCE_MODE", false),
+		MaintenanceMode:        envBool("MAINTENANCE_MODE", false),
-		Environment:     environment,
+		Environment:            environment,
-		MetricsUsername: envString("METRICS_USERNAME"),
+		MetricsUsername:        envString("METRICS_USERNAME"),
-		MetricsPassword: envString("METRICS_PASSWORD"),
+		MetricsPassword:        envString("METRICS_PASSWORD"),
-		Port:            envInt("PORT", defaultPort),
+		Port:                   envInt("PORT", defaultPort),
-		SentryDSN:       envString("SENTRY_DSN"),
+		SentryDSN:              envString("SENTRY_DSN"),
-		log:             log,
+		RetentionSweepInterval: retentionSweepInterval,
-		params:          &params,
+		log:                    log,
+		params:                 &params,
 	}
 
 	// Set default DataDir. All SQLite databases (main application
@@ -151,6 +196,7 @@ func New(lc fx.Lifecycle, params ConfigParams) (*Config, error) {
 		"debug", s.Debug,
 		"maintenanceMode", s.MaintenanceMode,
 		"dataDir", s.DataDir,
+		"retentionSweepInterval", s.RetentionSweepInterval.String(),
 		"hasSentryDSN", s.SentryDSN != "",
 		"hasMetricsAuth",
 		s.MetricsUsername != "" && s.MetricsPassword != "",

internal/config/config_test.go

@@ -3,6 +3,7 @@ package config_test
 import (
 	"os"
 	"testing"
+	"time"
 
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
@@ -120,6 +121,100 @@ func testEnvironmentConfigSuccess(
 	assert.Equal(t, isProd, cfg.IsProd())
 }
 
+func TestRetentionSweepInterval(t *testing.T) {
+	tests := []struct {
+		name        string
+		set         bool
+		value       string
+		expectError bool
+		expected    time.Duration
+	}{
+		{
+			name:     "unset uses default",
+			set:      false,
+			expected: time.Hour,
+		},
+		{
+			name:     "valid value is parsed",
+			set:      true,
+			value:    "15m",
+			expected: 15 * time.Minute,
+		},
+		{
+			name:        "unparseable value fails startup",
+			set:         true,
+			value:       "not-a-duration",
+			expectError: true,
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			// Cannot use t.Parallel() here because t.Setenv
+			// is incompatible with parallel subtests.
+			t.Setenv("WEBHOOKER_ENVIRONMENT", "dev")
+
+			if tt.set {
+				t.Setenv("RETENTION_SWEEP_INTERVAL", tt.value)
+			} else {
+				require.NoError(t, os.Unsetenv(
+					"RETENTION_SWEEP_INTERVAL",
+				))
+			}
+
+			if tt.expectError {
+				testRetentionSweepIntervalError(t)
+			} else {
+				testRetentionSweepIntervalSuccess(t, tt.expected)
+			}
+		})
+	}
+}
+
+func testRetentionSweepIntervalError(t *testing.T) {
+	t.Helper()
+
+	var cfg *config.Config
+
+	app := fx.New(
+		fx.NopLogger,
+		fx.Provide(
+			globals.New,
+			logger.New,
+			config.New,
+		),
+		fx.Populate(&cfg),
+	)
+
+	assert.Error(t, app.Err())
+}
+
+func testRetentionSweepIntervalSuccess(
+	t *testing.T,
+	expected time.Duration,
+) {
+	t.Helper()
+
+	var cfg *config.Config
+
+	app := fxtest.New(
+		t,
+		fx.Provide(
+			globals.New,
+			logger.New,
+			config.New,
+		),
+		fx.Populate(&cfg),
+	)
+	require.NoError(t, app.Err())
+
+	app.RequireStart()
+
+	defer app.RequireStop()
+
+	assert.Equal(t, expected, cfg.RetentionSweepInterval)
+}
+
 func TestDefaultDataDir(t *testing.T) {
 	for _, env := range []string{"", "dev", "prod"} {
 		name := env

internal/database/database_test.go

@@ -11,6 +11,15 @@ import (
 	"sneak.berlin/go/webhooker/internal/logger"
 )
 
+const (
+	// testAppname is the Globals.Appname used in tests.
+	testAppname = "webhooker-test"
+	// testVersion is the Globals.Version used in tests.
+	testVersion = "test"
+	// testContentType is the event content type used in tests.
+	testContentType = "application/json"
+)
+
 func setupTestDB(
 	t *testing.T,
 ) (*database.Database, *fxtest.Lifecycle) {
@@ -19,8 +28,8 @@ func setupTestDB(
 	lc := fxtest.NewLifecycle(t)
 
 	g := &globals.Globals{
-		Appname: "webhooker-test",
+		Appname: testAppname,
-		Version: "test",
+		Version: testVersion,
 	}
 
 	l, err := logger.New(

internal/database/export_test.go

@@ -0,0 +1,31 @@
+package database
+
+import (
+	"context"
+	"log/slog"
+	"os"
+	"time"
+)
+
+// NewTestRetentionReaper builds a RetentionReaper backed by the given
+// main database and per-webhook database manager, without the fx
+// lifecycle. Intended for tests.
+func NewTestRetentionReaper(
+	db *Database,
+	mgr *WebhookDBManager,
+) *RetentionReaper {
+	return &RetentionReaper{
+		db:        db,
+		dbManager: mgr,
+		log: slog.New(slog.NewTextHandler(
+			os.Stderr,
+			&slog.HandlerOptions{Level: slog.LevelDebug},
+		)),
+		interval: time.Hour,
+	}
+}
+
+// ExportSweep runs a single retention sweep synchronously for tests.
+func (r *RetentionReaper) ExportSweep(ctx context.Context) {
+	r.sweep(ctx)
+}

internal/database/model_entrypoint.go

@@ -4,10 +4,13 @@ package database
 type Entrypoint struct {
 	BaseModel
 
-	WebhookID   string `gorm:"type:uuid;not null"   json:"webhookId"`
+	WebhookID string `gorm:"type:uuid;not null" json:"webhookId"`
-	Path        string `gorm:"uniqueIndex;not null" json:"path"` // URL path for this entrypoint
+
+	// Path is the URL path for this entrypoint.
+	Path string `gorm:"uniqueIndex;not null" json:"path"`
+
 	Description string `json:"description"`
-	Active      bool   `gorm:"default:true"         json:"active"`
+	Active      bool   `gorm:"default:true" json:"active"`
 
 	// Relations
 	Webhook Webhook `json:"webhook,omitzero"`

internal/database/model_target.go

@@ -23,7 +23,8 @@ type Target struct {
 	// Configuration fields (JSON stored based on type)
 	Config string `gorm:"type:text" json:"config"` // JSON configuration
 
-	// For HTTP targets (max_retries=0 means fire-and-forget, >0 enables retries with backoff)
+	// For HTTP targets (max_retries=0 means fire-and-forget,
+	// >0 enables retries with backoff)
 	MaxRetries   int `json:"maxRetries,omitempty"`
 	MaxQueueSize int `json:"maxQueueSize,omitempty"`
 

internal/database/model_webhook.go

@@ -4,10 +4,12 @@ package database
 type Webhook struct {
 	BaseModel
 
-	UserID        string `gorm:"type:uuid;not null" json:"userId"`
+	UserID      string `gorm:"type:uuid;not null" json:"userId"`
-	Name          string `gorm:"not null"           json:"name"`
+	Name        string `gorm:"not null"           json:"name"`
-	Description   string `json:"description"`
+	Description string `json:"description"`
-	RetentionDays int    `gorm:"default:30"         json:"retentionDays"` // Days to retain events
+
+	// RetentionDays is the number of days to retain events.
+	RetentionDays int `gorm:"default:30" json:"retentionDays"`
 
 	// Relations
 	User        User         `json:"user,omitzero"`

internal/database/retention.go

@@ -0,0 +1,252 @@
+package database
+
+import (
+	"context"
+	"fmt"
+	"log/slog"
+	"sync"
+	"time"
+
+	"go.uber.org/fx"
+	"gorm.io/gorm"
+	"sneak.berlin/go/webhooker/internal/config"
+	"sneak.berlin/go/webhooker/internal/logger"
+)
+
+// hoursPerDay converts a RetentionDays count into hours for cutoff
+// computation.
+const hoursPerDay = 24
+
+// RetentionReaperParams holds the fx dependencies for the
+// RetentionReaper.
+type RetentionReaperParams struct {
+	fx.In
+
+	Config    *config.Config
+	Database  *Database
+	DBManager *WebhookDBManager
+	Logger    *logger.Logger
+}
+
+// RetentionReaper periodically deletes expired events (and their
+// dependent deliveries and delivery results) from each per-webhook
+// database, enforcing every webhook's RetentionDays. Rows are removed
+// permanently so that per-webhook SQLite files do not grow without
+// bound.
+type RetentionReaper struct {
+	db        *Database
+	dbManager *WebhookDBManager
+	log       *slog.Logger
+	interval  time.Duration
+	cancel    context.CancelFunc
+	wg        sync.WaitGroup
+}
+
+// NewRetentionReaper creates the retention reaper and registers its
+// fx lifecycle hooks. The background sweep loop starts on OnStart and
+// stops cleanly on OnStop via context cancellation.
+func NewRetentionReaper(
+	lc fx.Lifecycle,
+	params RetentionReaperParams,
+) *RetentionReaper {
+	r := &RetentionReaper{
+		db:        params.Database,
+		dbManager: params.DBManager,
+		log:       params.Logger.Get(),
+		interval:  params.Config.RetentionSweepInterval,
+	}
+
+	lc.Append(fx.Hook{
+		OnStart: func(ctx context.Context) error {
+			r.start(ctx)
+
+			return nil
+		},
+		OnStop: func(_ context.Context) error {
+			r.stop()
+
+			return nil
+		},
+	})
+
+	return r
+}
+
+func (r *RetentionReaper) start(ctx context.Context) {
+	ctx, cancel := context.WithCancel(ctx)
+	r.cancel = cancel
+
+	r.wg.Add(1)
+
+	go r.run(ctx)
+
+	r.log.Info(
+		"retention reaper started",
+		"interval", r.interval.String(),
+	)
+}
+
+func (r *RetentionReaper) stop() {
+	r.log.Info("retention reaper stopping")
+
+	if r.cancel != nil {
+		r.cancel()
+	}
+
+	r.wg.Wait()
+	r.log.Info("retention reaper stopped")
+}
+
+func (r *RetentionReaper) run(ctx context.Context) {
+	defer r.wg.Done()
+
+	ticker := time.NewTicker(r.interval)
+	defer ticker.Stop()
+
+	for {
+		select {
+		case <-ctx.Done():
+			return
+		case <-ticker.C:
+			r.sweep(ctx)
+		}
+	}
+}
+
+// sweep lists every webhook from the main database and reaps expired
+// rows from each per-webhook database whose RetentionDays is positive.
+func (r *RetentionReaper) sweep(ctx context.Context) {
+	var webhooks []Webhook
+
+	err := r.db.DB().
+		Model(&Webhook{}).
+		Find(&webhooks).Error
+	if err != nil {
+		r.log.Error(
+			"retention sweep: failed to list webhooks",
+			"error", err,
+		)
+
+		return
+	}
+
+	for i := range webhooks {
+		select {
+		case <-ctx.Done():
+			return
+		default:
+		}
+
+		wh := webhooks[i]
+
+		// RetentionDays of zero or less means retain forever.
+		if wh.RetentionDays <= 0 {
+			continue
+		}
+
+		// Nothing to reap if the per-webhook database has never
+		// been created.
+		if !r.dbManager.DBExists(wh.ID) {
+			continue
+		}
+
+		r.reapWebhook(wh.ID, wh.RetentionDays)
+	}
+}
+
+// reapWebhook removes every expired event (and its dependents) from a
+// single webhook's database.
+func (r *RetentionReaper) reapWebhook(
+	webhookID string,
+	retentionDays int,
+) {
+	db, err := r.dbManager.GetDB(webhookID)
+	if err != nil {
+		r.log.Error(
+			"retention sweep: failed to open webhook database",
+			"webhook_id", webhookID,
+			"error", err,
+		)
+
+		return
+	}
+
+	cutoff := time.Now().Add(
+		-time.Duration(retentionDays*hoursPerDay) * time.Hour,
+	)
+
+	deleted, err := reapExpired(db, cutoff)
+	if err != nil {
+		r.log.Error(
+			"retention sweep: failed to reap expired events",
+			"webhook_id", webhookID,
+			"error", err,
+		)
+
+		return
+	}
+
+	if deleted > 0 {
+		r.log.Info(
+			"retention sweep: reaped expired events",
+			"webhook_id", webhookID,
+			"retention_days", retentionDays,
+			"events_deleted", deleted,
+		)
+	}
+}
+
+// reapExpired hard-deletes, in foreign-key-safe order, the delivery
+// results, deliveries, and events associated with events older than
+// cutoff. Deletes are unscoped so rows are physically removed rather
+// than soft-deleted, reclaiming disk. It returns the number of events
+// deleted.
+func reapExpired(db *gorm.DB, cutoff time.Time) (int64, error) {
+	// Fresh subqueries are built per statement to avoid reusing a
+	// mutated builder across executions.
+	expiredEventIDs := func() *gorm.DB {
+		return db.Model(&Event{}).
+			Select("id").
+			Where("created_at < ?", cutoff)
+	}
+	expiredDeliveryIDs := func() *gorm.DB {
+		return db.Model(&Delivery{}).
+			Select("id").
+			Where("event_id IN (?)", expiredEventIDs())
+	}
+
+	// 1. Delivery results whose delivery belongs to an expired event.
+	res := db.Unscoped().
+		Where("delivery_id IN (?)", expiredDeliveryIDs()).
+		Delete(&DeliveryResult{})
+	if res.Error != nil {
+		return 0, fmt.Errorf(
+			"deleting expired delivery results: %w",
+			res.Error,
+		)
+	}
+
+	// 2. Deliveries belonging to an expired event.
+	del := db.Unscoped().
+		Where("event_id IN (?)", expiredEventIDs()).
+		Delete(&Delivery{})
+	if del.Error != nil {
+		return 0, fmt.Errorf(
+			"deleting expired deliveries: %w",
+			del.Error,
+		)
+	}
+
+	// 3. The expired events themselves.
+	ev := db.Unscoped().
+		Where("created_at < ?", cutoff).
+		Delete(&Event{})
+	if ev.Error != nil {
+		return 0, fmt.Errorf(
+			"deleting expired events: %w",
+			ev.Error,
+		)
+	}
+
+	return ev.RowsAffected, nil
+}

internal/database/retention_test.go

@@ -0,0 +1,278 @@
+package database_test
+
+import (
+	"context"
+	"net/http"
+	"testing"
+	"time"
+
+	"github.com/google/uuid"
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+	"go.uber.org/fx/fxtest"
+	"gorm.io/gorm"
+	"gorm.io/gorm/clause"
+	"sneak.berlin/go/webhooker/internal/config"
+	"sneak.berlin/go/webhooker/internal/database"
+	"sneak.berlin/go/webhooker/internal/globals"
+	"sneak.berlin/go/webhooker/internal/logger"
+)
+
+// retentionTestEnv bundles the pieces a retention test drives.
+type retentionTestEnv struct {
+	reaper *database.RetentionReaper
+	mainDB *database.Database
+	mgr    *database.WebhookDBManager
+}
+
+func setupRetentionTest(t *testing.T) *retentionTestEnv {
+	t.Helper()
+
+	lc := fxtest.NewLifecycle(t)
+
+	g := &globals.Globals{
+		Appname: testAppname,
+		Version: testVersion,
+	}
+
+	l, err := logger.New(lc, logger.LoggerParams{Globals: g})
+	require.NoError(t, err)
+
+	cfg := &config.Config{
+		DataDir:     t.TempDir(),
+		Environment: "dev",
+	}
+
+	mainDB, err := database.New(lc, database.DatabaseParams{
+		Config: cfg,
+		Logger: l,
+	})
+	require.NoError(t, err)
+
+	mgr, err := database.NewWebhookDBManager(
+		lc,
+		database.WebhookDBManagerParams{Config: cfg, Logger: l},
+	)
+	require.NoError(t, err)
+
+	ctx := context.Background()
+	require.NoError(t, lc.Start(ctx))
+	t.Cleanup(func() { require.NoError(t, lc.Stop(ctx)) })
+
+	return &retentionTestEnv{
+		reaper: database.NewTestRetentionReaper(mainDB, mgr),
+		mainDB: mainDB,
+		mgr:    mgr,
+	}
+}
+
+// createWebhook inserts a webhook row into the main database with the
+// given retention policy and returns its ID.
+func createWebhook(
+	t *testing.T,
+	db *gorm.DB,
+	retentionDays int,
+) string {
+	t.Helper()
+
+	wh := &database.Webhook{
+		UserID:        uuid.New().String(),
+		Name:          "test-webhook",
+		RetentionDays: retentionDays,
+	}
+	require.NoError(
+		t,
+		db.Omit(clause.Associations).Create(wh).Error,
+	)
+
+	// The RetentionDays column carries a GORM default of 30, so a
+	// zero (or negative) value passed to Create is replaced by that
+	// default. Force the requested value explicitly so the
+	// retain-forever (<= 0) path can be exercised.
+	require.NoError(
+		t,
+		db.Model(wh).
+			Update("retention_days", retentionDays).Error,
+	)
+
+	return wh.ID
+}
+
+// eventChain is the set of row IDs seeded for a single event.
+type eventChain struct {
+	eventID    string
+	deliveryID string
+	resultID   string
+}
+
+// seedEventChain creates an event with one delivery and one delivery
+// result, all stamped with createdAt, and returns their IDs.
+func seedEventChain(
+	t *testing.T,
+	db *gorm.DB,
+	webhookID string,
+	createdAt time.Time,
+) eventChain {
+	t.Helper()
+
+	event := &database.Event{
+		WebhookID:    webhookID,
+		EntrypointID: uuid.New().String(),
+		Method:       http.MethodPost,
+		Body:         `{"seed": true}`,
+		ContentType:  testContentType,
+	}
+	event.CreatedAt = createdAt
+	require.NoError(t, db.Create(event).Error)
+
+	delivery := &database.Delivery{
+		EventID:  event.ID,
+		TargetID: uuid.New().String(),
+		Status:   database.DeliveryStatusDelivered,
+	}
+	delivery.CreatedAt = createdAt
+	require.NoError(t, db.Create(delivery).Error)
+
+	result := &database.DeliveryResult{
+		DeliveryID: delivery.ID,
+		AttemptNum: 1,
+		Success:    true,
+		StatusCode: 200,
+		Duration:   10,
+	}
+	result.CreatedAt = createdAt
+	require.NoError(t, db.Create(result).Error)
+
+	return eventChain{
+		eventID:    event.ID,
+		deliveryID: delivery.ID,
+		resultID:   result.ID,
+	}
+}
+
+// countByID returns how many rows of model match the given id,
+// counting even hard-deletable rows via Unscoped.
+func countByID(
+	t *testing.T,
+	db *gorm.DB,
+	model any,
+	id string,
+) int64 {
+	t.Helper()
+
+	var n int64
+
+	require.NoError(
+		t,
+		db.Unscoped().Model(model).
+			Where("id = ?", id).Count(&n).Error,
+	)
+
+	return n
+}
+
+func assertChainGone(
+	t *testing.T,
+	db *gorm.DB,
+	chain eventChain,
+) {
+	t.Helper()
+
+	assert.Zero(
+		t,
+		countByID(t, db, &database.Event{}, chain.eventID),
+		"expired event should be removed",
+	)
+	assert.Zero(
+		t,
+		countByID(t, db, &database.Delivery{}, chain.deliveryID),
+		"expired delivery should be removed",
+	)
+	assert.Zero(
+		t,
+		countByID(
+			t, db, &database.DeliveryResult{}, chain.resultID,
+		),
+		"expired delivery result should be removed",
+	)
+}
+
+func assertChainPresent(
+	t *testing.T,
+	db *gorm.DB,
+	chain eventChain,
+) {
+	t.Helper()
+
+	assert.Equal(
+		t,
+		int64(1),
+		countByID(t, db, &database.Event{}, chain.eventID),
+		"recent event should be retained",
+	)
+	assert.Equal(
+		t,
+		int64(1),
+		countByID(t, db, &database.Delivery{}, chain.deliveryID),
+		"recent delivery should be retained",
+	)
+	assert.Equal(
+		t,
+		int64(1),
+		countByID(
+			t, db, &database.DeliveryResult{}, chain.resultID,
+		),
+		"recent delivery result should be retained",
+	)
+}
+
+func TestRetentionReaper_ReapsExpiredKeepsRecent(t *testing.T) {
+	t.Parallel()
+
+	env := setupRetentionTest(t)
+
+	const retentionDays = 30
+
+	webhookID := createWebhook(
+		t, env.mainDB.DB(), retentionDays,
+	)
+
+	db, err := env.mgr.GetDB(webhookID)
+	require.NoError(t, err)
+
+	now := time.Now()
+	old := seedEventChain(
+		t, db, webhookID,
+		now.Add(-40*24*time.Hour),
+	)
+	recent := seedEventChain(
+		t, db, webhookID,
+		now.Add(-1*24*time.Hour),
+	)
+
+	env.reaper.ExportSweep(context.Background())
+
+	assertChainGone(t, db, old)
+	assertChainPresent(t, db, recent)
+}
+
+func TestRetentionReaper_RetainsForeverWhenNonPositive(t *testing.T) {
+	t.Parallel()
+
+	env := setupRetentionTest(t)
+
+	// RetentionDays of zero means retain forever.
+	webhookID := createWebhook(t, env.mainDB.DB(), 0)
+
+	db, err := env.mgr.GetDB(webhookID)
+	require.NoError(t, err)
+
+	ancient := seedEventChain(
+		t, db, webhookID,
+		time.Now().Add(-365*24*time.Hour),
+	)
+
+	env.reaper.ExportSweep(context.Background())
+
+	assertChainPresent(t, db, ancient)
+}

internal/database/testing.go

@@ -13,8 +13,11 @@ import (
 // sql.DB connection.
 func NewTestDatabase(db *gorm.DB) *Database {
 	return &Database{
-		db:  db,
+		db: db,
-		log: slog.New(slog.NewTextHandler(os.Stderr, &slog.HandlerOptions{Level: slog.LevelDebug})),
+		log: slog.New(slog.NewTextHandler(
+			os.Stderr,
+			&slog.HandlerOptions{Level: slog.LevelDebug},
+		)),
 	}
 }
 
@@ -23,6 +26,9 @@ func NewTestDatabase(db *gorm.DB) *Database {
 func NewTestWebhookDBManager(dataDir string) *WebhookDBManager {
 	return &WebhookDBManager{
 		dataDir: dataDir,
-		log:     slog.New(slog.NewTextHandler(os.Stderr, &slog.HandlerOptions{Level: slog.LevelDebug})),
+		log: slog.New(slog.NewTextHandler(
+			os.Stderr,
+			&slog.HandlerOptions{Level: slog.LevelDebug},
+		)),
 	}
 }

internal/database/webhook_db_manager_test.go

@@ -2,6 +2,7 @@ package database_test
 
 import (
 	"context"
+	"net/http"
 	"os"
 	"path/filepath"
 	"testing"
@@ -25,8 +26,8 @@ func setupTestWebhookDBManager(
 	lc := fxtest.NewLifecycle(t)
 
 	g := &globals.Globals{
-		Appname: "webhooker-test",
+		Appname: testAppname,
-		Version: "test",
+		Version: testVersion,
 	}
 
 	l, err := logger.New(
@@ -83,10 +84,10 @@ func TestWebhookDBManager_CreateAndGetDB(t *testing.T) {
 	event := &database.Event{
 		WebhookID:    webhookID,
 		EntrypointID: uuid.New().String(),
-		Method:       "POST",
+		Method:       http.MethodPost,
 		Headers:      `{"Content-Type":["application/json"]}`,
 		Body:         `{"test": true}`,
-		ContentType:  "application/json",
+		ContentType:  testContentType,
 	}
 	require.NoError(t, db.Create(event).Error)
 	assert.NotEmpty(t, event.ID)
@@ -99,7 +100,7 @@ func TestWebhookDBManager_CreateAndGetDB(t *testing.T) {
 		db.First(&readEvent, "id = ?", event.ID).Error,
 	)
 	assert.Equal(t, webhookID, readEvent.WebhookID)
-	assert.Equal(t, "POST", readEvent.Method)
+	assert.Equal(t, http.MethodPost, readEvent.Method)
 	assert.Equal(t, `{"test": true}`, readEvent.Body)
 }
 
@@ -123,9 +124,9 @@ func TestWebhookDBManager_DeleteDB(t *testing.T) {
 	event := &database.Event{
 		WebhookID:    webhookID,
 		EntrypointID: uuid.New().String(),
-		Method:       "POST",
+		Method:       http.MethodPost,
 		Body:         `{"test": true}`,
-		ContentType:  "application/json",
+		ContentType:  testContentType,
 	}
 	require.NoError(t, db.Create(event).Error)
 
@@ -196,10 +197,10 @@ func seedDeliveryWorkflow(
 	event := &database.Event{
 		WebhookID:    webhookID,
 		EntrypointID: uuid.New().String(),
-		Method:       "POST",
+		Method:       http.MethodPost,
 		Headers:      `{"Content-Type":["application/json"]}`,
 		Body:         `{"payload": "test"}`,
-		ContentType:  "application/json",
+		ContentType:  testContentType,
 	}
 	require.NoError(t, db.Create(event).Error)
 
@@ -231,7 +232,7 @@ func verifyPendingDeliveries(
 	)
 	require.Len(t, pending, 1)
 	assert.Equal(t, event.ID, pending[0].EventID)
-	assert.Equal(t, "POST", pending[0].Event.Method)
+	assert.Equal(t, http.MethodPost, pending[0].Event.Method)
 }
 
 func completeDelivery(
@@ -303,16 +304,16 @@ func TestWebhookDBManager_MultipleWebhooks(t *testing.T) {
 	event1 := &database.Event{
 		WebhookID:    webhook1,
 		EntrypointID: uuid.New().String(),
-		Method:       "POST",
+		Method:       http.MethodPost,
 		Body:         `{"webhook": 1}`,
-		ContentType:  "application/json",
+		ContentType:  testContentType,
 	}
 	event2 := &database.Event{
 		WebhookID:    webhook2,
 		EntrypointID: uuid.New().String(),
-		Method:       "PUT",
+		Method:       http.MethodPut,
 		Body:         `{"webhook": 2}`,
-		ContentType:  "application/json",
+		ContentType:  testContentType,
 	}
 
 	require.NoError(t, db1.Create(event1).Error)

internal/delivery/engine_integration_test.go

@@ -126,36 +126,6 @@ func iHTTPConfig(url string) string {
 	return string(data)
 }
 
-func iWebhookDB(t *testing.T) *gorm.DB {
-	t.Helper()
-
-	dbPath := filepath.Join(
-		t.TempDir(), "events-test.db",
-	)
-
-	dsn := fmt.Sprintf(
-		"file:%s?cache=shared&mode=rwc", dbPath,
-	)
-
-	sqlDB, err := sql.Open("sqlite", dsn)
-	require.NoError(t, err)
-
-	t.Cleanup(func() { _ = sqlDB.Close() })
-
-	db, err := gorm.Open(
-		sqlite.Dialector{Conn: sqlDB}, &gorm.Config{},
-	)
-	require.NoError(t, err)
-
-	require.NoError(t, db.AutoMigrate(
-		&database.Event{},
-		&database.Delivery{},
-		&database.DeliveryResult{},
-	))
-
-	return db
-}
-
 func iEngine(
 	t *testing.T, workers int,
 ) *delivery.Engine {
@@ -182,10 +152,10 @@ func iSeedEvent(
 	event := database.Event{
 		WebhookID:    webhookID,
 		EntrypointID: uuid.New().String(),
-		Method:       "POST",
+		Method:       http.MethodPost,
 		Headers:      `{}`,
 		Body:         body,
-		ContentType:  "application/json",
+		ContentType:  testContentType,
 	}
 
 	require.NoError(t, db.Create(&event).Error)
@@ -935,7 +905,7 @@ func TestDeliverHTTP_CustomTargetHeaders(t *testing.T) {
 func TestDeliverHTTP_TargetTimeout(t *testing.T) {
 	t.Parallel()
 
-	db := iWebhookDB(t)
+	db := testWebhookDB(t)
 	e := iEngine(t, 1)
 
 	ts := httptest.NewServer(
@@ -987,10 +957,10 @@ func iSeedEventAndDelivery(
 	event := database.Event{
 		WebhookID:    uuid.New().String(),
 		EntrypointID: uuid.New().String(),
-		Method:       "POST",
+		Method:       http.MethodPost,
 		Headers:      `{"Content-Type":["application/json"]}`,
 		Body:         body,
-		ContentType:  "application/json",
+		ContentType:  testContentType,
 	}
 
 	require.NoError(t, db.Create(&event).Error)
@@ -1067,7 +1037,7 @@ func iAssertResultFailed(
 func TestDeliverHTTP_InvalidConfig(t *testing.T) {
 	t.Parallel()
 
-	db := iWebhookDB(t)
+	db := testWebhookDB(t)
 	e := iEngine(t, 1)
 
 	event, del := iSeedEventAndDelivery(

internal/delivery/engine_test.go

@@ -27,6 +27,9 @@ import (
 	"sneak.berlin/go/webhooker/internal/delivery"
 )
 
+// testContentType is the event content type used in tests.
+const testContentType = "application/json"
+
 func testWebhookDB(t *testing.T) *gorm.DB {
 	t.Helper()
 
@@ -94,10 +97,10 @@ func seedEvent(
 	event := database.Event{
 		WebhookID:    uuid.New().String(),
 		EntrypointID: uuid.New().String(),
-		Method:       "POST",
+		Method:       http.MethodPost,
 		Headers:      `{"Content-Type":["application/json"]}`,
 		Body:         body,
-		ContentType:  "application/json",
+		ContentType:  testContentType,
 	}
 
 	require.NoError(t, db.Create(&event).Error)
@@ -342,33 +345,29 @@ func TestDeliverDatabase_ImmediateSuccess(
 	t.Parallel()
 
 	db := testWebhookDB(t)
-	e := testEngine(t, 1)
 
-	event := seedEvent(t, db, `{"db":"target"}`)
+	// The database target archives for real now, so the engine
-
+	// needs a webhook DB manager to locate the data directory.
-	dlv := seedDelivery(
+	e := delivery.NewTestEngineWithDB(
-		t, db, event.ID, uuid.New().String(),
+		nil,
-		database.DeliveryStatusPending,
+		database.NewTestWebhookDBManager(t.TempDir()),
+		slog.New(slog.NewTextHandler(
+			os.Stderr,
+			&slog.HandlerOptions{Level: slog.LevelDebug},
+		)),
+		&http.Client{Timeout: 5 * time.Second},
+		1,
 	)
 
-	d := &database.Delivery{
+	event := seedEvent(t, db, `{"db":"target"}`)
-		EventID:  event.ID,
+	d := seedDatabaseTargetDelivery(t, db, event, "")
-		TargetID: dlv.TargetID,
-		Status:   database.DeliveryStatusPending,
-		Event:    event,
-		Target: database.Target{
-			Name: "test-db",
-			Type: database.TargetTypeDatabase,
-		},
-	}
-	d.ID = dlv.ID
 
 	e.ExportDeliverDatabase(db, d)
 
 	var updated database.Delivery
 
 	require.NoError(t, db.First(
-		&updated, "id = ?", dlv.ID,
+		&updated, "id = ?", d.ID,
 	).Error)
 
 	assert.Equal(t,
@@ -379,7 +378,7 @@ func TestDeliverDatabase_ImmediateSuccess(
 	var result database.DeliveryResult
 
 	require.NoError(t, db.Where(
-		"delivery_id = ?", dlv.ID,
+		"delivery_id = ?", d.ID,
 	).First(&result).Error)
 
 	assert.True(t, result.Success)
@@ -436,91 +435,6 @@ func TestDeliverLog_ImmediateSuccess(t *testing.T) {
 	assert.True(t, result.Success)
 }
 
-func TestDeliverLog_StructuredLogFields(t *testing.T) {
-	t.Parallel()
-
-	db := testWebhookDB(t)
-
-	var logBuf bytes.Buffer
-
-	e := delivery.NewTestEngine(
-		slog.New(slog.NewTextHandler(
-			&logBuf,
-			&slog.HandlerOptions{Level: slog.LevelDebug},
-		)),
-		&http.Client{Timeout: 5 * time.Second},
-		1,
-	)
-
-	event := seedEvent(t, db, `{"log":"structured"}`)
-
-	dlv := seedDelivery(
-		t, db, event.ID, uuid.New().String(),
-		database.DeliveryStatusPending,
-	)
-
-	d := &database.Delivery{
-		EventID:  event.ID,
-		TargetID: dlv.TargetID,
-		Status:   database.DeliveryStatusPending,
-		Event:    event,
-		Target: database.Target{
-			Name: "structured-log",
-			Type: database.TargetTypeLog,
-		},
-	}
-	d.ID = dlv.ID
-
-	e.ExportDeliverLog(db, d)
-
-	// The delivery is marked delivered and a success
-	// DeliveryResult with no HTTP status is recorded,
-	// mirroring the other target types' bookkeeping.
-	var updated database.Delivery
-
-	require.NoError(t, db.First(
-		&updated, "id = ?", dlv.ID,
-	).Error)
-
-	assert.Equal(t,
-		database.DeliveryStatusDelivered, updated.Status,
-		"log target should immediately succeed",
-	)
-
-	var result database.DeliveryResult
-
-	require.NoError(t, db.Where(
-		"delivery_id = ?", dlv.ID,
-	).First(&result).Error)
-
-	assert.True(t, result.Success)
-	assert.Equal(t, 0, result.StatusCode,
-		"log target should not have an HTTP status",
-	)
-
-	assertLogFields(t, logBuf.String(), event, "structured-log")
-}
-
-// assertLogFields checks that a log target's structured
-// log line carries the required fields: event id,
-// webhook/entrypoint, target name, and outcome.
-func assertLogFields(
-	t *testing.T,
-	logged string,
-	event database.Event,
-	targetName string,
-) {
-	t.Helper()
-
-	assert.Contains(t, logged, "event_id="+event.ID)
-	assert.Contains(t, logged, "webhook_id="+event.WebhookID)
-	assert.Contains(t,
-		logged, "entrypoint_id="+event.EntrypointID,
-	)
-	assert.Contains(t, logged, "target_name="+targetName)
-	assert.Contains(t, logged, "outcome=delivered")
-}
-
 func TestDeliverHTTP_WithRetries_Success(t *testing.T) {
 	t.Parallel()
 
@@ -1202,10 +1116,10 @@ func TestDoHTTPRequest_ForwardsHeaders(t *testing.T) {
 	}
 
 	event := &database.Event{
-		Method:      "POST",
+		Method:      http.MethodPost,
 		Headers:     `{"X-Custom":["value1"],"Content-Type":["application/json"]}`,
 		Body:        `{"test":true}`,
-		ContentType: "application/json",
+		ContentType: testContentType,
 	}
 
 	statusCode, _, _, err := e.ExportDoHTTPRequest(
@@ -1227,7 +1141,7 @@ func TestDoHTTPRequest_ForwardsHeaders(t *testing.T) {
 	)
 
 	assert.Equal(t,
-		"application/json",
+		testContentType,
 		receivedHeaders.Get("Content-Type"),
 	)
 
@@ -1243,7 +1157,19 @@ func TestProcessDelivery_RoutesToCorrectHandler(
 	t.Parallel()
 
 	db := testWebhookDB(t)
-	e := testEngine(t, 1)
+
+	// The database target archives for real now, so the engine
+	// needs a webhook DB manager to locate the data directory.
+	e := delivery.NewTestEngineWithDB(
+		nil,
+		database.NewTestWebhookDBManager(t.TempDir()),
+		slog.New(slog.NewTextHandler(
+			os.Stderr,
+			&slog.HandlerOptions{Level: slog.LevelDebug},
+		)),
+		&http.Client{Timeout: 5 * time.Second},
+		1,
+	)
 
 	tests := []struct {
 		name       string
@@ -1374,8 +1300,8 @@ func TestFormatSlackMessage_JSONBody(t *testing.T) {
 	t.Parallel()
 
 	event := &database.Event{
-		Method:      "POST",
+		Method:      http.MethodPost,
-		ContentType: "application/json",
+		ContentType: testContentType,
 		Body: `{"action":"push",` +
 			`"repo":"test/repo",` +
 			`"ref":"refs/heads/main"}`,
@@ -1400,7 +1326,7 @@ func TestFormatSlackMessage_NonJSONBody(t *testing.T) {
 	t.Parallel()
 
 	event := &database.Event{
-		Method:      "POST",
+		Method:      http.MethodPost,
 		ContentType: "text/plain",
 		Body:        "hello world plain text",
 	}
@@ -1423,8 +1349,8 @@ func TestFormatSlackMessage_EmptyBody(t *testing.T) {
 	t.Parallel()
 
 	event := &database.Event{
-		Method:      "POST",
+		Method:      http.MethodPost,
-		ContentType: "application/json",
+		ContentType: testContentType,
 		Body:        "",
 	}
 	event.CreatedAt = time.Date(
@@ -1452,8 +1378,8 @@ func TestFormatSlackMessage_LargeJSONTruncated(
 	require.NoError(t, err)
 
 	event := &database.Event{
-		Method:      "POST",
+		Method:      http.MethodPost,
-		ContentType: "application/json",
+		ContentType: testContentType,
 		Body:        string(largeJSON),
 	}
 	event.CreatedAt = time.Date(
@@ -1738,6 +1664,179 @@ func TestProcessDelivery_RoutesToSlack(t *testing.T) {
 	)
 }
 
+// newLogCaptureEngine builds a test engine whose logger
+// writes to the returned buffer, for inspecting log output.
+func newLogCaptureEngine(
+	t *testing.T,
+) (*delivery.Engine, *bytes.Buffer) {
+	t.Helper()
+
+	var buf bytes.Buffer
+
+	log := slog.New(slog.NewTextHandler(
+		&buf,
+		&slog.HandlerOptions{Level: slog.LevelDebug},
+	))
+
+	e := delivery.NewTestEngine(
+		log, &http.Client{Timeout: 5 * time.Second}, 1,
+	)
+
+	return e, &buf
+}
+
+// assertLogLineComplete asserts the captured log output
+// carries the full inbound webhook content and ids.
+func assertLogLineComplete(
+	t *testing.T, out string, event database.Event,
+) {
+	t.Helper()
+
+	assert.Contains(t, out, "log-body-marker",
+		"log line must contain the full request body",
+	)
+
+	assert.Contains(t, out, "Content-Type",
+		"log line must contain the full request headers",
+	)
+
+	assert.Contains(t, out, event.EntrypointID,
+		"log line must contain the entrypoint id",
+	)
+
+	assert.Contains(t, out, event.WebhookID,
+		"log line must contain the webhook id",
+	)
+
+	assert.Contains(t, out, testContentType,
+		"log line must contain the content type",
+	)
+}
+
+func TestDeliverLog_LogsFullContent(t *testing.T) {
+	t.Parallel()
+
+	db := testWebhookDB(t)
+	e, buf := newLogCaptureEngine(t)
+
+	event := seedEvent(
+		t, db, `{"log-body-marker":"abc123"}`,
+	)
+
+	dlv := seedDelivery(
+		t, db, event.ID, uuid.New().String(),
+		database.DeliveryStatusPending,
+	)
+
+	d := &database.Delivery{
+		EventID:  event.ID,
+		TargetID: dlv.TargetID,
+		Status:   database.DeliveryStatusPending,
+		Event:    event,
+		Target: database.Target{
+			Name: "test-log-full",
+			Type: database.TargetTypeLog,
+		},
+	}
+	d.ID = dlv.ID
+
+	e.ExportDeliverLog(db, d)
+
+	assertLogLineComplete(t, buf.String(), event)
+
+	assertDeliveryStatus(t, db, dlv.ID,
+		database.DeliveryStatusDelivered,
+	)
+}
+
+// buildSlackRetryDelivery builds a Slack delivery whose
+// target is configured with retries enabled.
+func buildSlackRetryDelivery(
+	dlv database.Delivery,
+	event database.Event,
+	targetID, cfg string,
+) *database.Delivery {
+	d := &database.Delivery{
+		EventID:  event.ID,
+		TargetID: targetID,
+		Status:   database.DeliveryStatusPending,
+		Event:    event,
+		Target: database.Target{
+			Name:       "test-slack-retry",
+			Type:       database.TargetTypeSlack,
+			Config:     cfg,
+			MaxRetries: 5,
+		},
+	}
+	d.ID = dlv.ID
+
+	return d
+}
+
+func TestDeliverSlack_WithRetries_SchedulesRetry(
+	t *testing.T,
+) {
+	t.Parallel()
+
+	db := testWebhookDB(t)
+	ts := newStatusServer(t, http.StatusServiceUnavailable)
+	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(
+		t, db, event.ID, targetID,
+		database.DeliveryStatusPending,
+	)
+
+	d := buildSlackRetryDelivery(
+		dlv, event, targetID, string(slackCfg),
+	)
+
+	task := &delivery.Task{
+		DeliveryID: dlv.ID,
+		TargetID:   targetID,
+		TargetType: database.TargetTypeSlack,
+		MaxRetries: 5,
+		AttemptNum: 1,
+	}
+
+	e.ExportProcessDelivery(context.TODO(), db, d, task)
+
+	assertDeliveryStatus(t, db, dlv.ID,
+		database.DeliveryStatusRetrying,
+	)
+
+	assertDeliveryResult(
+		t, db, dlv.ID, false,
+		http.StatusServiceUnavailable,
+	)
+}
+
+// newStatusServer starts a test server that always responds
+// with the given status code.
+func newStatusServer(
+	t *testing.T, code int,
+) *httptest.Server {
+	t.Helper()
+
+	ts := httptest.NewServer(http.HandlerFunc(
+		func(w http.ResponseWriter, _ *http.Request) {
+			w.WriteHeader(code)
+		},
+	))
+
+	t.Cleanup(ts.Close)
+
+	return ts
+}
+
 // readAll is a small helper to avoid importing io in
 // a test handler inline.
 func readAll(r interface {

internal/delivery/export_test.go

@@ -39,37 +39,50 @@ func ExportTruncate(s string, maxLen int) string {
 	return truncate(s, maxLen)
 }
 
-// ExportDeliverHTTP exposes deliverHTTP for testing.
+// ExportDeliverHTTP delivers via the http target for testing.
 func (e *Engine) ExportDeliverHTTP(
 	ctx context.Context,
 	webhookDB *gorm.DB,
 	d *database.Delivery,
 	task *Task,
 ) {
-	e.deliverHTTP(ctx, webhookDB, d, task)
+	e.httpTarget.Deliver(ctx, webhookDB, d, task, e)
 }
 
-// ExportDeliverDatabase exposes deliverDatabase.
+// ExportDeliverDatabase delivers via the database target.
 func (e *Engine) ExportDeliverDatabase(
 	webhookDB *gorm.DB, d *database.Delivery,
 ) {
-	e.deliverDatabase(webhookDB, d)
+	e.targets[database.TargetTypeDatabase].Deliver(
+		context.Background(), webhookDB, d, &Task{}, e,
+	)
 }
 
-// ExportDeliverLog exposes deliverLog for testing.
+// ExportDeliverLog delivers via the log target for testing.
 func (e *Engine) ExportDeliverLog(
 	webhookDB *gorm.DB, d *database.Delivery,
 ) {
-	e.deliverLog(webhookDB, d)
+	e.targets[database.TargetTypeLog].Deliver(
+		context.Background(), webhookDB, d, &Task{}, e,
+	)
 }
 
-// ExportDeliverSlack exposes deliverSlack for testing.
+// ExportDeliverSlack delivers via the slack target for
+// testing.
 func (e *Engine) ExportDeliverSlack(
 	ctx context.Context,
 	webhookDB *gorm.DB,
 	d *database.Delivery,
 ) {
-	e.deliverSlack(ctx, webhookDB, d)
+	task := &Task{
+		DeliveryID: d.ID,
+		TargetID:   d.TargetID,
+		AttemptNum: 1,
+	}
+
+	e.targets[database.TargetTypeSlack].Deliver(
+		ctx, webhookDB, d, task, e,
+	)
 }
 
 // ExportProcessNewTask exposes processNewTask.
@@ -96,53 +109,56 @@ func (e *Engine) ExportProcessDelivery(
 	e.processDelivery(ctx, webhookDB, d, task)
 }
 
-// ExportGetCircuitBreaker exposes getCircuitBreaker.
+// ExportGetCircuitBreaker exposes the http target's
+// getCircuitBreaker.
 func (e *Engine) ExportGetCircuitBreaker(
 	targetID string,
 ) *CircuitBreaker {
-	return e.getCircuitBreaker(targetID)
+	return e.httpTarget.getCircuitBreaker(targetID)
 }
 
 // ExportParseHTTPConfig exposes parseHTTPConfig.
 func (e *Engine) ExportParseHTTPConfig(
 	configJSON string,
 ) (*HTTPTargetConfig, error) {
-	return e.parseHTTPConfig(configJSON)
+	return parseHTTPConfig(configJSON)
 }
 
 // ExportParseSlackConfig exposes parseSlackConfig.
 func (e *Engine) ExportParseSlackConfig(
 	configJSON string,
 ) (*SlackTargetConfig, error) {
-	return e.parseSlackConfig(configJSON)
+	return parseSlackConfig(configJSON)
 }
 
-// ExportDoHTTPRequest exposes doHTTPRequest.
+// ExportDoHTTPRequest exposes the http target's
+// doHTTPRequest.
 func (e *Engine) ExportDoHTTPRequest(
 	ctx context.Context,
 	cfg *HTTPTargetConfig,
 	event *database.Event,
 ) (int, string, int64, error) {
-	return e.doHTTPRequest(ctx, cfg, event)
+	return e.httpTarget.doHTTPRequest(ctx, cfg, event)
 }
 
-// ExportClientForConfig exposes clientForConfig.
+// ExportClientForConfig exposes the http target's
+// clientForConfig.
 func (e *Engine) ExportClientForConfig(
 	cfg *HTTPTargetConfig,
 ) *http.Client {
-	return e.clientForConfig(cfg)
+	return e.httpTarget.clientForConfig(cfg)
 }
 
-// ExportClient returns the engine's shared HTTP client.
+// ExportClient returns the http target's shared HTTP client.
 func (e *Engine) ExportClient() *http.Client {
-	return e.client
+	return e.httpTarget.client
 }
 
-// ExportScheduleRetry exposes scheduleRetry.
+// ExportScheduleRetry exposes ScheduleRetry.
 func (e *Engine) ExportScheduleRetry(
 	task Task, delay time.Duration,
 ) {
-	e.scheduleRetry(task, delay)
+	e.ScheduleRetry(task, delay)
 }
 
 // ExportRecoverPendingDeliveries exposes
@@ -199,13 +215,15 @@ func NewTestEngine(
 	client *http.Client,
 	workers int,
 ) *Engine {
-	return &Engine{
+	e := &Engine{
 		log:        log,
-		client:     client,
 		deliveryCh: make(chan Task, deliveryChannelSize),
 		retryCh:    make(chan Task, retryChannelSize),
 		workers:    workers,
 	}
+	e.initTargets(client)
+
+	return e
 }
 
 // NewTestEngineSmallRetry creates an Engine with a tiny
@@ -213,10 +231,13 @@ func NewTestEngine(
 func NewTestEngineSmallRetry(
 	log *slog.Logger,
 ) *Engine {
-	return &Engine{
+	e := &Engine{
 		log:     log,
 		retryCh: make(chan Task, 1),
 	}
+	e.initTargets(nil)
+
+	return e
 }
 
 // NewTestEngineWithDB creates an Engine with a real
@@ -228,15 +249,17 @@ func NewTestEngineWithDB(
 	client *http.Client,
 	workers int,
 ) *Engine {
-	return &Engine{
+	e := &Engine{
 		database:   db,
 		dbManager:  dbMgr,
 		log:        log,
-		client:     client,
 		deliveryCh: make(chan Task, deliveryChannelSize),
 		retryCh:    make(chan Task, retryChannelSize),
 		workers:    workers,
 	}
+	e.initTargets(client)
+
+	return e
 }
 
 // NewTestCircuitBreaker creates a CircuitBreaker with
@@ -250,3 +273,64 @@ func NewTestCircuitBreaker(
 		cooldown:  cooldown,
 	}
 }
+
+// ExportArchivedEvent aliases the archive row type so black-box
+// tests can construct and read archive rows.
+type ExportArchivedEvent = archivedEvent
+
+// ExportArchiveWriter wraps an archiveWriter so black-box tests
+// can exercise the per-webhook archive file mechanics.
+type ExportArchiveWriter struct {
+	w *archiveWriter
+}
+
+// NewExportArchiveWriter builds an archive writer for tests,
+// optionally overriding the reopen debounce (a non-positive
+// debounce keeps the production default).
+func NewExportArchiveWriter(
+	path string, log *slog.Logger, debounce time.Duration,
+) *ExportArchiveWriter {
+	w := newArchiveWriter(path, log)
+	if debounce > 0 {
+		w.debounce = debounce
+	}
+
+	return &ExportArchiveWriter{w: w}
+}
+
+// Write archives a row through the writer.
+func (e *ExportArchiveWriter) Write(
+	row ExportArchivedEvent, expiry time.Duration,
+) error {
+	return e.w.write(row, expiry)
+}
+
+// Open opens the archive file, pruning when expiry is positive.
+func (e *ExportArchiveWriter) Open(expiry time.Duration) error {
+	return e.w.open(expiry)
+}
+
+// Reopen closes and reopens the archive file.
+func (e *ExportArchiveWriter) Reopen(
+	expiry time.Duration,
+) error {
+	return e.w.reopen(expiry)
+}
+
+// Reopens reports how many times the file has been opened.
+func (e *ExportArchiveWriter) Reopens() int {
+	return e.w.reopens
+}
+
+// DB returns the writer's current open handle for row
+// inspection in tests.
+func (e *ExportArchiveWriter) DB() *gorm.DB {
+	return e.w.db
+}
+
+// ExportParseArchiveExpiry exposes parseArchiveExpiry.
+func ExportParseArchiveExpiry(
+	configJSON string,
+) (time.Duration, error) {
+	return parseArchiveExpiry(configJSON)
+}

internal/delivery/target.go

@@ -0,0 +1,101 @@
+package delivery
+
+import (
+	"context"
+	"net/http"
+	"time"
+
+	"gorm.io/gorm"
+	"sneak.berlin/go/webhooker/internal/database"
+)
+
+// Scheduler re-enqueues a task for a future delivery attempt.
+// 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
+// its own restart recovery.
+type Scheduler interface {
+	ScheduleRetry(task Task, delay time.Duration)
+}
+
+// Target delivers an event to one target type. Each type is
+// an implementation. A Target owns its whole delivery: it
+// makes the attempt, records the DeliveryResult and updates
+// the DeliveryStatus, and — for targets that retry — decides
+// whether to retry, computes its own backoff, gates with its
+// own circuit breaker, and reschedules via the injected
+// Scheduler. Fire-and-forget targets simply record a single
+// attempt.
+type Target interface {
+	Deliver(
+		ctx context.Context,
+		webhookDB *gorm.DB,
+		d *database.Delivery,
+		task *Task,
+		sched Scheduler,
+	)
+}
+
+// rescheduler is implemented by targets that own durable
+// retries. The engine's restart recovery and periodic sweep
+// use it to let the target recompute the schedule for an
+// orphaned retrying delivery, keeping the retry schedule
+// target-owned. Fire-and-forget targets do not implement it
+// and their (never-occurring) retrying deliveries are
+// skipped.
+type rescheduler interface {
+	// remainingBackoff returns how long to wait before the
+	// next attempt of a recovered retrying delivery.
+	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,
+// as reported by a target's per-attempt function to the
+// shared retry core.
+type attemptResult struct {
+	statusCode int
+	respBody   string
+	duration   int64
+	success    bool
+	errMsg     string
+}
+
+// initTargets builds the target registry, wiring each target
+// to the engine's persistence helpers and giving the HTTP and
+// Slack targets the shared SSRF-safe client. It is called by
+// both New and the test constructors so the registry is
+// always populated.
+func (e *Engine) initTargets(client *http.Client) {
+	httpT := &httpTarget{
+		httpCore: &httpCore{eng: e},
+		client:   client,
+	}
+
+	slackT := &slackTarget{
+		httpCore: &httpCore{eng: e},
+		client:   client,
+	}
+
+	e.httpTarget = httpT
+
+	e.targets = map[database.TargetType]Target{
+		database.TargetTypeHTTP:     httpT,
+		database.TargetTypeSlack:    slackT,
+		database.TargetTypeDatabase: &databaseTarget{eng: e},
+		database.TargetTypeLog:      &logTarget{eng: e},
+	}
+}

internal/delivery/target_database.go

@@ -0,0 +1,137 @@
+package delivery
+
+import (
+	"context"
+	"fmt"
+	"path/filepath"
+	"sync"
+
+	"gorm.io/gorm"
+	"sneak.berlin/go/webhooker/internal/database"
+)
+
+// databaseTarget is a no-retry target that archives the
+// full inbound event into a per-webhook archive SQLite file,
+// separate from the per-webhook event database. The event is
+// already persisted in the per-webhook event DB by the time
+// delivery runs; the database target additionally writes a
+// durable long-term copy into archive-{webhookID}.db and then
+// records a single attempt whose outcome reflects whether the
+// archive write succeeded. See archiveWriter for the
+// close/reopen, auto-recreate, and expiry semantics.
+type databaseTarget struct {
+	eng *Engine
+
+	mu      sync.Mutex
+	writers map[string]*archiveWriter
+}
+
+// Deliver implements Target. It archives the event, then
+// records one successful attempt and marks the delivery
+// delivered. An archiving error fails the delivery: the
+// attempt is recorded as failed with the error and the
+// delivery is marked failed, so a target that could not do
+// its one job (archiving) never reports success. The target
+// does not retry; the event remains durably stored in the
+// per-webhook event database.
+func (t *databaseTarget) Deliver(
+	_ context.Context,
+	webhookDB *gorm.DB,
+	d *database.Delivery,
+	_ *Task,
+	_ Scheduler,
+) {
+	err := t.archive(d)
+	if err != nil {
+		t.eng.log.Error(
+			"failed to archive event to database target",
+			"delivery_id", d.ID,
+			"event_id", d.EventID,
+			"error", err,
+		)
+
+		t.eng.recordResult(
+			webhookDB, d, 1, false, 0, "",
+			err.Error(), 0,
+		)
+
+		t.eng.updateDeliveryStatus(
+			webhookDB, d, database.DeliveryStatusFailed,
+		)
+
+		return
+	}
+
+	t.eng.recordResult(
+		webhookDB, d, 1, true, 0, "", "", 0,
+	)
+
+	t.eng.updateDeliveryStatus(
+		webhookDB, d, database.DeliveryStatusDelivered,
+	)
+}
+
+// archive writes the full event as a row into the webhook's
+// archive database, honouring the optional per-target expiry
+// parsed from the target config JSON.
+func (t *databaseTarget) archive(d *database.Delivery) error {
+	webhookID := d.Event.WebhookID
+	if webhookID == "" {
+		return errArchiveMissingWebhookID
+	}
+
+	expiry, err := parseArchiveExpiry(d.Target.Config)
+	if err != nil {
+		return err
+	}
+
+	w, err := t.writerFor(webhookID)
+	if err != nil {
+		return err
+	}
+
+	row := archivedEvent{
+		EventID:      d.Event.ID,
+		WebhookID:    webhookID,
+		EntrypointID: d.Event.EntrypointID,
+		Method:       d.Event.Method,
+		Headers:      d.Event.Headers,
+		Body:         d.Event.Body,
+		ContentType:  d.Event.ContentType,
+	}
+
+	return w.write(row, expiry)
+}
+
+// writerFor returns the archiveWriter for a webhook, creating
+// and caching it on first use. Each webhook has one writer so
+// its close/reopen debounce state is shared across concurrent
+// deliveries. The archive file lives beside the per-webhook
+// event database in the data directory.
+func (t *databaseTarget) writerFor(
+	webhookID string,
+) (*archiveWriter, error) {
+	if t.eng.dbManager == nil {
+		return nil, errArchiveNoDataDir
+	}
+
+	dir := filepath.Dir(t.eng.dbManager.DBPath(webhookID))
+	path := filepath.Join(
+		dir, fmt.Sprintf("archive-%s.db", webhookID),
+	)
+
+	t.mu.Lock()
+	defer t.mu.Unlock()
+
+	if t.writers == nil {
+		t.writers = make(map[string]*archiveWriter)
+	}
+
+	w, ok := t.writers[webhookID]
+	if !ok {
+		w = newArchiveWriter(path, t.eng.log)
+		t.writers[webhookID] = w
+	}
+
+	return w, nil
+}

internal/delivery/target_database_archive.go

@@ -0,0 +1,312 @@
+package delivery
+
+import (
+	"database/sql"
+	"encoding/json"
+	"errors"
+	"fmt"
+	"log/slog"
+	"os"
+	"sync"
+	"time"
+
+	"gorm.io/driver/sqlite"
+	"gorm.io/gorm"
+)
+
+// archiveExpiryNever is the expiry sentinel (and default) that
+// disables pruning so archived rows are kept forever.
+const archiveExpiryNever = "never"
+
+// archiveReopenDebounce bounds how often an archive file is
+// closed and reopened. After each write the handle is closed
+// and reopened so an operator can move the file away for
+// offline archiving, but never more than once per this window.
+const archiveReopenDebounce = time.Second
+
+var (
+	// errArchiveMissingWebhookID is returned when an event to
+	// archive has no webhook id to key its archive file on.
+	errArchiveMissingWebhookID = errors.New(
+		"cannot archive event without a webhook id",
+	)
+
+	// errArchiveNoDataDir is returned when the database target
+	// has no webhook database manager and so cannot locate the
+	// data directory for archive files.
+	errArchiveNoDataDir = errors.New(
+		"database target has no data directory",
+	)
+
+	// errArchiveExpiryNotPositive is returned when a
+	// user-supplied archive expiry parses as a duration but is
+	// zero or negative; "never" is the way to disable pruning.
+	errArchiveExpiryNotPositive = errors.New(
+		"expiry must be a positive duration or \"never\"",
+	)
+)
+
+// 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"`
+}
+
+// archivedEvent is one fully captured webhook event stored in a
+// per-webhook archive database for long-term retention. It is a
+// self-contained copy — independent of the per-webhook event
+// database, which may prune events under its own retention.
+type archivedEvent struct {
+	ID           uint   `gorm:"primaryKey;autoIncrement"`
+	EventID      string `gorm:"index"`
+	WebhookID    string
+	EntrypointID string
+	Method       string
+	Headers      string
+	Body         string
+	ContentType  string
+
+	// ArchivedAt is when the row was archived and is the age
+	// basis for expiry pruning.
+	ArchivedAt time.Time `gorm:"index"`
+}
+
+// parseArchiveExpiry reads the optional expiry from a database
+// target's config JSON. An empty config, an empty expiry, or
+// the literal "never" all mean keep forever, returned as a zero
+// duration. Any other value must parse as a positive Go
+// duration; a set-but-invalid value (unparseable, zero, or
+// negative) is an error rather than a silent default, matching
+// ValidateArchiveExpiry at target creation.
+func parseArchiveExpiry(
+	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 == archiveExpiryNever {
+		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
+}
+
+// ValidateArchiveExpiry 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 ValidateArchiveExpiry(expiry string) error {
+	if expiry == "" || expiry == archiveExpiryNever {
+		return nil
+	}
+
+	dur, err := time.ParseDuration(expiry)
+	if err != nil {
+		return fmt.Errorf(
+			"expiry must be %q or a Go duration "+
+				"such as \"720h\": %w",
+			archiveExpiryNever, err,
+		)
+	}
+
+	if dur <= 0 {
+		return fmt.Errorf(
+			"%w: %q", errArchiveExpiryNotPositive, expiry,
+		)
+	}
+
+	return nil
+}
+
+// archiveWriter owns one per-webhook archive SQLite file. It
+// serialises writes, and after each write closes and reopens
+// the file (debounced to at most once per debounce window) so
+// an operator can move the file away for offline archiving. The
+// next write recreates a moved or removed file, because the
+// file is opened create-if-missing and its schema is migrated
+// on every open.
+type archiveWriter struct {
+	mu         sync.Mutex
+	path       string
+	log        *slog.Logger
+	debounce   time.Duration
+	db         *gorm.DB
+	lastReopen time.Time
+	reopens    int
+}
+
+// newArchiveWriter builds an archiveWriter for a file path with
+// the default reopen debounce.
+func newArchiveWriter(
+	path string, log *slog.Logger,
+) *archiveWriter {
+	return &archiveWriter{
+		path:     path,
+		log:      log,
+		debounce: archiveReopenDebounce,
+	}
+}
+
+// write appends the event as a row, then applies the debounced
+// close/reopen. It recreates the archive file if it was moved
+// or removed since the last open. A positive expiry prunes rows
+// older than it on each (re)open.
+func (w *archiveWriter) write(
+	row archivedEvent, expiry time.Duration,
+) error {
+	w.mu.Lock()
+	defer w.mu.Unlock()
+
+	if w.db == nil || !fileExists(w.path) {
+		err := w.reopen(expiry)
+		if err != nil {
+			return err
+		}
+	}
+
+	row.ArchivedAt = time.Now()
+
+	err := w.db.Create(&row).Error
+	if err != nil {
+		return fmt.Errorf(
+			"archiving event to %s: %w", w.path, err,
+		)
+	}
+
+	if time.Since(w.lastReopen) >= w.debounce {
+		return w.reopen(expiry)
+	}
+
+	return nil
+}
+
+// open opens (creating if missing) the archive file, migrates
+// its schema, records the reopen time, and prunes expired rows
+// when expiry is positive.
+func (w *archiveWriter) open(expiry time.Duration) error {
+	dbURL := fmt.Sprintf("file:%s?mode=rwc", w.path)
+
+	sqlDB, err := sql.Open("sqlite", dbURL)
+	if err != nil {
+		return fmt.Errorf(
+			"opening archive database %s: %w", w.path, err,
+		)
+	}
+
+	gdb, err := gorm.Open(
+		sqlite.Dialector{Conn: sqlDB}, &gorm.Config{},
+	)
+	if err != nil {
+		_ = sqlDB.Close()
+
+		return fmt.Errorf(
+			"connecting to archive database %s: %w",
+			w.path, err,
+		)
+	}
+
+	err = gdb.AutoMigrate(&archivedEvent{})
+	if err != nil {
+		_ = sqlDB.Close()
+
+		return fmt.Errorf(
+			"migrating archive database %s: %w", w.path, err,
+		)
+	}
+
+	w.db = gdb
+	w.lastReopen = time.Now()
+	w.reopens++
+
+	if expiry > 0 {
+		w.prune(expiry)
+	}
+
+	return nil
+}
+
+// reopen closes any open handle and opens the file afresh. The
+// fresh open recreates the file if it was moved away.
+func (w *archiveWriter) reopen(expiry time.Duration) error {
+	w.close()
+
+	return w.open(expiry)
+}
+
+// close closes the underlying handle, if any.
+func (w *archiveWriter) close() {
+	if w.db == nil {
+		return
+	}
+
+	sqlDB, err := w.db.DB()
+	if err == nil {
+		_ = sqlDB.Close()
+	}
+
+	w.db = nil
+}
+
+// prune deletes archived rows older than expiry, measured from
+// each row's archived time. It runs on every (re)open, and
+// because the file is reopened after writes this keeps the
+// archive swept without a separate background sweeper. Failures
+// are logged, not fatal: a prune error must not stop archiving.
+func (w *archiveWriter) prune(expiry time.Duration) {
+	cutoff := time.Now().Add(-expiry)
+
+	res := w.db.Where("archived_at < ?", cutoff).
+		Delete(&archivedEvent{})
+	if res.Error != nil {
+		w.log.Error(
+			"failed to prune expired archive rows",
+			"path", w.path,
+			"error", res.Error,
+		)
+
+		return
+	}
+
+	if res.RowsAffected > 0 {
+		w.log.Info(
+			"pruned expired archive rows",
+			"path", w.path,
+			"rows_deleted", res.RowsAffected,
+		)
+	}
+}
+
+// fileExists reports whether a path currently exists.
+func fileExists(path string) bool {
+	_, err := os.Stat(path)
+
+	return err == nil
+}

internal/delivery/target_database_test.go

@@ -0,0 +1,395 @@
+package delivery_test
+
+import (
+	"database/sql"
+	"fmt"
+	"log/slog"
+	"net/http"
+	"os"
+	"path/filepath"
+	"testing"
+	"time"
+
+	"github.com/google/uuid"
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+	"gorm.io/driver/sqlite"
+	"gorm.io/gorm"
+	_ "modernc.org/sqlite" // Pure Go SQLite driver.
+	"sneak.berlin/go/webhooker/internal/database"
+	"sneak.berlin/go/webhooker/internal/delivery"
+)
+
+func archiveTestLogger() *slog.Logger {
+	return slog.New(slog.NewTextHandler(
+		os.Stderr,
+		&slog.HandlerOptions{Level: slog.LevelDebug},
+	))
+}
+
+// openArchiveDBForRead opens an archive file read-only so a
+// test can inspect the rows the writer persisted.
+func openArchiveDBForRead(
+	t *testing.T, path string,
+) *gorm.DB {
+	t.Helper()
+
+	sqlDB, err := sql.Open(
+		"sqlite",
+		fmt.Sprintf("file:%s?mode=ro", path),
+	)
+	require.NoError(t, err)
+
+	t.Cleanup(func() { _ = sqlDB.Close() })
+
+	gdb, err := gorm.Open(
+		sqlite.Dialector{Conn: sqlDB}, &gorm.Config{},
+	)
+	require.NoError(t, err)
+
+	return gdb
+}
+
+// removeArchiveFiles simulates an operator moving the archive
+// away by deleting the SQLite file and its sidecar files.
+func removeArchiveFiles(t *testing.T, path string) {
+	t.Helper()
+
+	for _, suffix := range []string{
+		"", "-wal", "-shm", "-journal",
+	} {
+		err := os.Remove(path + suffix)
+		if err != nil && !os.IsNotExist(err) {
+			t.Fatalf("removing %s%s: %v", path, suffix, err)
+		}
+	}
+}
+
+// TestDeliverDatabase_ArchivesEvent verifies that delivering to
+// a database target marks the delivery delivered and archives
+// the full event into a separate per-webhook archive file.
+func TestDeliverDatabase_ArchivesEvent(t *testing.T) {
+	t.Parallel()
+
+	dataDir := t.TempDir()
+	dbMgr := database.NewTestWebhookDBManager(dataDir)
+
+	e := delivery.NewTestEngineWithDB(
+		nil, dbMgr,
+		archiveTestLogger(),
+		&http.Client{Timeout: 5 * time.Second},
+		1,
+	)
+
+	webhookDB := testWebhookDB(t)
+	event := seedEvent(t, webhookDB, `{"archived":true}`)
+	d := seedDatabaseTargetDelivery(t, webhookDB, event, "")
+
+	e.ExportDeliverDatabase(webhookDB, d)
+
+	var updated database.Delivery
+
+	require.NoError(t, webhookDB.First(
+		&updated, "id = ?", d.ID,
+	).Error)
+	assert.Equal(t,
+		database.DeliveryStatusDelivered, updated.Status,
+		"database target should mark the delivery delivered",
+	)
+
+	archivePath := filepath.Join(
+		dataDir,
+		fmt.Sprintf("archive-%s.db", event.WebhookID),
+	)
+	assert.FileExists(t, archivePath)
+
+	rdb := openArchiveDBForRead(t, archivePath)
+
+	var rows []delivery.ExportArchivedEvent
+
+	require.NoError(t, rdb.Find(&rows).Error)
+	require.Len(t, rows, 1)
+	assert.Equal(t, event.ID, rows[0].EventID)
+	assert.Equal(t, event.WebhookID, rows[0].WebhookID)
+	assert.Equal(t, event.Method, rows[0].Method)
+	assert.JSONEq(t, `{"archived":true}`, rows[0].Body)
+}
+
+func TestArchiveWriter_WritesRow(t *testing.T) {
+	t.Parallel()
+
+	path := filepath.Join(t.TempDir(), "archive-wh.db")
+	w := delivery.NewExportArchiveWriter(
+		path, archiveTestLogger(), 0,
+	)
+
+	row := delivery.ExportArchivedEvent{
+		EventID:      "ev-1",
+		WebhookID:    "wh-1",
+		EntrypointID: "ep-1",
+		Method:       "POST",
+		Headers:      `{"X":"Y"}`,
+		Body:         `{"hello":"world"}`,
+		ContentType:  "application/json",
+	}
+
+	require.NoError(t, w.Write(row, 0))
+	assert.FileExists(t, path)
+
+	var got []delivery.ExportArchivedEvent
+
+	require.NoError(t, w.DB().Find(&got).Error)
+	require.Len(t, got, 1)
+	assert.Equal(t, "ev-1", got[0].EventID)
+	assert.Equal(t, "wh-1", got[0].WebhookID)
+	assert.Equal(t, "ep-1", got[0].EntrypointID)
+	assert.Equal(t, row.Method, got[0].Method)
+	assert.Equal(t, row.ContentType, got[0].ContentType)
+	assert.JSONEq(t, `{"hello":"world"}`, got[0].Body)
+	assert.False(t, got[0].ArchivedAt.IsZero())
+}
+
+func TestArchiveWriter_RecreatesAfterRemoval(
+	t *testing.T,
+) {
+	t.Parallel()
+
+	path := filepath.Join(t.TempDir(), "archive-wh.db")
+	w := delivery.NewExportArchiveWriter(
+		path, archiveTestLogger(), 0,
+	)
+
+	require.NoError(t, w.Write(
+		delivery.ExportArchivedEvent{EventID: "a"}, 0,
+	))
+	assert.FileExists(t, path)
+
+	// The operator moves the archive away while the handle is
+	// still open.
+	removeArchiveFiles(t, path)
+	require.NoFileExists(t, path)
+
+	// The next write recreates the file with a fresh schema and
+	// only the new row.
+	require.NoError(t, w.Write(
+		delivery.ExportArchivedEvent{EventID: "b"}, 0,
+	))
+	assert.FileExists(t, path)
+
+	var got []delivery.ExportArchivedEvent
+
+	require.NoError(t, w.DB().Find(&got).Error)
+	require.Len(t, got, 1)
+	assert.Equal(t, "b", got[0].EventID)
+}
+
+func TestArchiveWriter_ReopenDebounce(t *testing.T) {
+	t.Parallel()
+
+	// A generous debounce keeps the two rapid writes inside
+	// the window even on a heavily loaded test machine.
+	path := filepath.Join(t.TempDir(), "archive-wh.db")
+	w := delivery.NewExportArchiveWriter(
+		path, archiveTestLogger(), 2*time.Second,
+	)
+
+	require.NoError(t, w.Write(
+		delivery.ExportArchivedEvent{EventID: "a"}, 0,
+	))
+	require.NoError(t, w.Write(
+		delivery.ExportArchivedEvent{EventID: "b"}, 0,
+	))
+
+	// Two writes inside the debounce window trigger only the
+	// initial open — no extra close/reopen.
+	assert.Equal(t, 1, w.Reopens())
+
+	time.Sleep(2100 * time.Millisecond)
+
+	require.NoError(t, w.Write(
+		delivery.ExportArchivedEvent{EventID: "c"}, 0,
+	))
+
+	// A write after the window elapses closes and reopens once.
+	assert.Equal(t, 2, w.Reopens())
+}
+
+func TestArchiveWriter_ExpiryPrune(t *testing.T) {
+	t.Parallel()
+
+	path := filepath.Join(t.TempDir(), "archive-wh.db")
+	w := delivery.NewExportArchiveWriter(
+		path, archiveTestLogger(), 0,
+	)
+
+	require.NoError(t, w.Open(0))
+
+	old := delivery.ExportArchivedEvent{
+		EventID:    "old",
+		ArchivedAt: time.Now().Add(-2 * time.Hour),
+	}
+	fresh := delivery.ExportArchivedEvent{
+		EventID:    "fresh",
+		ArchivedAt: time.Now(),
+	}
+
+	require.NoError(t, w.DB().Create(&old).Error)
+	require.NoError(t, w.DB().Create(&fresh).Error)
+
+	// Reopening with a one-hour expiry prunes the old row.
+	require.NoError(t, w.Reopen(time.Hour))
+
+	var got []delivery.ExportArchivedEvent
+
+	require.NoError(t, w.DB().Find(&got).Error)
+	require.Len(t, got, 1)
+	assert.Equal(t, "fresh", got[0].EventID)
+}
+
+func TestParseArchiveExpiry(t *testing.T) {
+	t.Parallel()
+
+	cases := []struct {
+		name    string
+		in      string
+		want    time.Duration
+		wantErr bool
+	}{
+		{"empty config", "", 0, false},
+		{"explicit never", `{"expiry":"never"}`, 0, false},
+		{"empty expiry", `{"expiry":""}`, 0, false},
+		{"duration", `{"expiry":"1h"}`, time.Hour, false},
+		{"unparseable", `{"expiry":"nonsense"}`, 0, true},
+		{"zero duration", `{"expiry":"0s"}`, 0, true},
+		{"negative duration", `{"expiry":"-5h"}`, 0, true},
+	}
+
+	for _, tc := range cases {
+		t.Run(tc.name, func(t *testing.T) {
+			t.Parallel()
+
+			got, err := delivery.ExportParseArchiveExpiry(tc.in)
+			if tc.wantErr {
+				require.Error(t, err)
+
+				return
+			}
+
+			require.NoError(t, err)
+			assert.Equal(t, tc.want, got)
+		})
+	}
+}
+
+// seedDatabaseTargetDelivery seeds a pending delivery for a
+// database target with the given config JSON and returns the
+// in-memory delivery the target handler is invoked with.
+func seedDatabaseTargetDelivery(
+	t *testing.T,
+	webhookDB *gorm.DB,
+	event database.Event,
+	config string,
+) *database.Delivery {
+	t.Helper()
+
+	dlv := seedDelivery(
+		t, webhookDB, event.ID, uuid.New().String(),
+		database.DeliveryStatusPending,
+	)
+
+	d := &database.Delivery{
+		EventID:  event.ID,
+		TargetID: dlv.TargetID,
+		Status:   database.DeliveryStatusPending,
+		Event:    event,
+		Target: database.Target{
+			Name:   "test-db",
+			Type:   database.TargetTypeDatabase,
+			Config: config,
+		},
+	}
+	d.ID = dlv.ID
+
+	return d
+}
+
+// TestDeliverDatabase_ArchiveFailureFailsDelivery verifies that
+// an archive error (here: an unparseable expiry in the target
+// config) fails the delivery loudly: the attempt is recorded as
+// failed with the error and the delivery is marked failed, not
+// delivered.
+func TestDeliverDatabase_ArchiveFailureFailsDelivery(
+	t *testing.T,
+) {
+	t.Parallel()
+
+	dataDir := t.TempDir()
+
+	e := delivery.NewTestEngineWithDB(
+		nil, database.NewTestWebhookDBManager(dataDir),
+		archiveTestLogger(),
+		&http.Client{Timeout: 5 * time.Second},
+		1,
+	)
+
+	webhookDB := testWebhookDB(t)
+	event := seedEvent(t, webhookDB, `{"archived":false}`)
+	d := seedDatabaseTargetDelivery(
+		t, webhookDB, event, `{"expiry":"nonsense"}`,
+	)
+
+	e.ExportDeliverDatabase(webhookDB, d)
+
+	var updated database.Delivery
+
+	require.NoError(t, webhookDB.First(
+		&updated, "id = ?", d.ID,
+	).Error)
+	assert.Equal(t,
+		database.DeliveryStatusFailed, updated.Status,
+		"archive failure must mark the delivery failed",
+	)
+
+	var results []database.DeliveryResult
+
+	require.NoError(t, webhookDB.Where(
+		"delivery_id = ?", d.ID,
+	).Find(&results).Error)
+	require.Len(t, results, 1)
+	assert.False(t,
+		results[0].Success,
+		"the attempt must be recorded as failed",
+	)
+	assert.Contains(t,
+		results[0].Error, "nonsense",
+		"the archive error must be recorded on the attempt",
+	)
+
+	assert.NoFileExists(t,
+		filepath.Join(
+			dataDir,
+			fmt.Sprintf("archive-%s.db", event.WebhookID),
+		),
+		"no archive file should exist for a failed config",
+	)
+}
+
+func TestValidateArchiveExpiry(t *testing.T) {
+	t.Parallel()
+
+	valid := []string{"", "never", "1h", "720h", "30m"}
+	for _, in := range valid {
+		require.NoError(t,
+			delivery.ValidateArchiveExpiry(in),
+			"expiry %q should be accepted", in,
+		)
+	}
+
+	invalid := []string{"nonsense", "7d", "-5h", "0s", "0"}
+	for _, in := range invalid {
+		require.Error(t,
+			delivery.ValidateArchiveExpiry(in),
+			"expiry %q should be rejected", in,
+		)
+	}
+}

internal/delivery/target_http.go

@@ -0,0 +1,499 @@
+package delivery
+
+import (
+	"bytes"
+	"context"
+	"encoding/json"
+	"errors"
+	"fmt"
+	"io"
+	"net/http"
+	"sync"
+	"time"
+
+	"gorm.io/gorm"
+	"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"`
+}
+
+// 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
+// own circuit breakers); the per-attempt request differs
+// between them and is supplied as a closure.
+type httpCore struct {
+	eng *Engine
+
+	// circuitBreakers stores a *CircuitBreaker per target ID.
+	circuitBreakers sync.Map
+}
+
+// deliver runs one delivery attempt through the retry core.
+// A maxRetries of 0 is fire-and-forget: a single attempt is
+// recorded and no circuit breaker is consulted. A positive
+// maxRetries gates the attempt on the circuit breaker and
+// schedules a backed-off retry on failure.
+func (c *httpCore) deliver(
+	webhookDB *gorm.DB,
+	d *database.Delivery,
+	task *Task,
+	sched Scheduler,
+	maxRetries int,
+	attempt func() attemptResult,
+) {
+	if maxRetries == 0 {
+		c.fireAndForget(webhookDB, d, attempt())
+
+		return
+	}
+
+	c.withRetry(
+		webhookDB, d, task, sched, maxRetries, attempt,
+	)
+}
+
+func (c *httpCore) fireAndForget(
+	webhookDB *gorm.DB,
+	d *database.Delivery,
+	res attemptResult,
+) {
+	c.eng.recordResult(
+		webhookDB, d, 1, res.success,
+		res.statusCode, res.respBody, res.errMsg,
+		res.duration,
+	)
+
+	if res.success {
+		c.eng.updateDeliveryStatus(
+			webhookDB, d,
+			database.DeliveryStatusDelivered,
+		)
+
+		return
+	}
+
+	c.eng.updateDeliveryStatus(
+		webhookDB, d, database.DeliveryStatusFailed,
+	)
+}
+
+func (c *httpCore) withRetry(
+	webhookDB *gorm.DB,
+	d *database.Delivery,
+	task *Task,
+	sched Scheduler,
+	maxRetries int,
+	attempt func() attemptResult,
+) {
+	cb := c.getCircuitBreaker(task.TargetID)
+	if c.circuitBreakerBlock(webhookDB, d, task, sched, cb) {
+		return
+	}
+
+	attemptNum := task.AttemptNum
+
+	res := attempt()
+
+	c.eng.recordResult(
+		webhookDB, d, attemptNum, res.success,
+		res.statusCode, res.respBody, res.errMsg,
+		res.duration,
+	)
+
+	if res.success {
+		cb.RecordSuccess()
+
+		c.eng.updateDeliveryStatus(
+			webhookDB, d,
+			database.DeliveryStatusDelivered,
+		)
+
+		return
+	}
+
+	cb.RecordFailure()
+
+	c.handleRetry(
+		webhookDB, d, task, sched, maxRetries, attemptNum,
+	)
+}
+
+func (c *httpCore) circuitBreakerBlock(
+	webhookDB *gorm.DB,
+	d *database.Delivery,
+	task *Task,
+	sched Scheduler,
+	cb *CircuitBreaker,
+) bool {
+	if cb.Allow() {
+		return false
+	}
+
+	remaining := cb.CooldownRemaining()
+
+	c.eng.log.Info(
+		"circuit breaker open, skipping delivery",
+		"target_id", task.TargetID,
+		"target_name", task.TargetName,
+		"delivery_id", d.ID,
+		"cooldown_remaining", remaining,
+	)
+
+	c.eng.updateDeliveryStatus(
+		webhookDB, d,
+		database.DeliveryStatusRetrying,
+	)
+
+	retryTask := *task
+	sched.ScheduleRetry(retryTask, remaining)
+
+	return true
+}
+
+func (c *httpCore) handleRetry(
+	webhookDB *gorm.DB,
+	d *database.Delivery,
+	task *Task,
+	sched Scheduler,
+	maxRetries int,
+	attemptNum int,
+) {
+	if attemptNum >= maxRetries {
+		c.eng.updateDeliveryStatus(
+			webhookDB, d,
+			database.DeliveryStatusFailed,
+		)
+
+		return
+	}
+
+	c.eng.updateDeliveryStatus(
+		webhookDB, d, database.DeliveryStatusRetrying,
+	)
+
+	backoff := calcBackoff(attemptNum)
+
+	retryTask := *task
+	retryTask.AttemptNum = attemptNum + 1
+	sched.ScheduleRetry(retryTask, backoff)
+}
+
+func (c *httpCore) getCircuitBreaker(
+	targetID string,
+) *CircuitBreaker {
+	if val, ok := c.circuitBreakers.Load(targetID); ok {
+		cb, _ := val.(*CircuitBreaker)
+
+		return cb
+	}
+
+	fresh := NewCircuitBreaker()
+
+	actual, _ := c.circuitBreakers.LoadOrStore(
+		targetID, fresh,
+	)
+
+	cb, _ := actual.(*CircuitBreaker)
+
+	return cb
+}
+
+// remainingBackoff returns how long remains of the backoff
+// window for the last attempt of a recovered retrying
+// delivery. It implements rescheduler.
+func (c *httpCore) remainingBackoff(
+	webhookDB *gorm.DB,
+	deliveryID string,
+	attemptNum int,
+) time.Duration {
+	var lastResult database.DeliveryResult
+
+	err := webhookDB.
+		Where("delivery_id = ?", deliveryID).
+		Order("created_at DESC").
+		First(&lastResult).Error
+	if err != nil {
+		return 0
+	}
+
+	backoff := calcBackoff(attemptNum)
+	elapsed := time.Since(lastResult.CreatedAt)
+	remaining := backoff - elapsed
+
+	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 := calcBackoff(attemptNum)
+
+	return time.Since(lastResult.CreatedAt) >= backoff
+}
+
+func calcBackoff(attemptNum int) time.Duration {
+	shift := max(attemptNum-1, 0)
+	shift = min(shift, maxBackoffShift)
+
+	return time.Duration(1<<uint(shift)) * time.Second
+}
+
+// httpTarget delivers events to http targets. It forwards the
+// event body and (filtered) request headers to the configured
+// URL and owns retry, backoff, and circuit breaking through
+// the shared httpCore.
+type httpTarget struct {
+	*httpCore
+
+	client *http.Client
+}
+
+// Deliver implements Target.
+func (t *httpTarget) Deliver(
+	ctx context.Context,
+	webhookDB *gorm.DB,
+	d *database.Delivery,
+	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,
+		)
+
+		t.eng.recordResult(
+			webhookDB, d, task.AttemptNum,
+			false, 0, "", err.Error(), 0,
+		)
+
+		t.eng.updateDeliveryStatus(
+			webhookDB, d, database.DeliveryStatusFailed,
+		)
+
+		return
+	}
+
+	attempt := func() attemptResult {
+		return t.attempt(ctx, cfg, &d.Event)
+	}
+
+	t.deliver(
+		webhookDB, d, task, sched,
+		d.Target.MaxRetries, attempt,
+	)
+}
+
+// attempt performs a single HTTP delivery attempt and derives
+// the success flag and error message the same way the engine
+// did: a non-2xx response is a failure but carries no error
+// string; only a transport-level error does.
+func (t *httpTarget) attempt(
+	ctx context.Context,
+	cfg *HTTPTargetConfig,
+	event *database.Event,
+) attemptResult {
+	statusCode, respBody, duration, reqErr :=
+		t.doHTTPRequest(ctx, cfg, event)
+
+	success := reqErr == nil &&
+		statusCode >= httpSuccessMin &&
+		statusCode < httpSuccessMax
+
+	errMsg := ""
+	if reqErr != nil {
+		errMsg = reqErr.Error()
+	}
+
+	return attemptResult{
+		statusCode: statusCode,
+		respBody:   respBody,
+		duration:   duration,
+		success:    success,
+		errMsg:     errMsg,
+	}
+}
+
+func (t *httpTarget) doHTTPRequest(
+	ctx context.Context,
+	cfg *HTTPTargetConfig,
+	event *database.Event,
+) (int, string, int64, error) {
+	start := time.Now()
+
+	req, reqErr := http.NewRequestWithContext(
+		ctx,
+		http.MethodPost,
+		cfg.URL,
+		bytes.NewReader([]byte(event.Body)),
+	)
+	if reqErr != nil {
+		return 0, "", 0, fmt.Errorf(
+			"creating request: %w", reqErr,
+		)
+	}
+
+	applyRequestHeaders(req, event, cfg)
+
+	client := t.clientForConfig(cfg)
+
+	resp, doErr := executeHTTPRequest(client, req)
+
+	dur := time.Since(start).Milliseconds()
+	if doErr != nil {
+		return 0, "", dur, fmt.Errorf(
+			"sending request: %w", doErr,
+		)
+	}
+
+	defer func() { _ = resp.Body.Close() }()
+
+	body, readErr := io.ReadAll(
+		io.LimitReader(resp.Body, maxBodyLog),
+	)
+	if readErr != nil {
+		return resp.StatusCode, "", dur,
+			fmt.Errorf(
+				"reading response body: %w", readErr,
+			)
+	}
+
+	return resp.StatusCode, string(body), dur, nil
+}
+
+func (t *httpTarget) clientForConfig(
+	cfg *HTTPTargetConfig,
+) *http.Client {
+	if cfg.Timeout > 0 {
+		// Reuse the shared client's SSRF-safe transport so
+		// a per-target timeout does not drop the
+		// request-time private-IP guard. Only the timeout
+		// is overridden.
+		return &http.Client{
+			Timeout: time.Duration(
+				cfg.Timeout,
+			) * time.Second,
+			Transport: t.client.Transport,
+		}
+	}
+
+	return t.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 {
+	switch http.CanonicalHeaderKey(name) {
+	case "Host", "Connection", "Keep-Alive",
+		"Transfer-Encoding", "Te", "Trailer",
+		"Upgrade", "Proxy-Authorization",
+		"Proxy-Connection", "Content-Length":
+		return false
+	default:
+		return true
+	}
+}
+
+func applyRequestHeaders(
+	req *http.Request,
+	event *database.Event,
+	cfg *HTTPTargetConfig,
+) {
+	if event.ContentType != "" {
+		req.Header.Set(
+			"Content-Type", event.ContentType,
+		)
+	}
+
+	var originalHeaders map[string][]string
+
+	if event.Headers != "" {
+		jsonErr := json.Unmarshal(
+			[]byte(event.Headers),
+			&originalHeaders,
+		)
+		if jsonErr == nil {
+			for k, vals := range originalHeaders {
+				if isForwardableHeader(k) {
+					for _, v := range vals {
+						req.Header.Add(k, v)
+					}
+				}
+			}
+		}
+	}
+
+	for k, v := range cfg.Headers {
+		req.Header.Set(k, v)
+	}
+
+	req.Header.Set("User-Agent", "webhooker/1.0")
+}
+
+// executeHTTPRequest sends an HTTP request using the provided
+// client. URLs are validated by the config parsers and the
+// SSRF-safe transport before reaching here.
+func executeHTTPRequest(
+	client *http.Client, req *http.Request,
+) (*http.Response, error) {
+	return client.Do(req) //#nosec G704 -- validated URL, SSRF-safe transport
+}

internal/delivery/target_log.go

@@ -0,0 +1,47 @@
+package delivery
+
+import (
+	"context"
+
+	"gorm.io/gorm"
+	"sneak.berlin/go/webhooker/internal/database"
+)
+
+// logTarget is a fire-and-forget target that logs the entire
+// inbound webhook — the full request body and headers, plus
+// the method, content type, and the webhook and entrypoint
+// ids — then records a single successful attempt.
+type logTarget struct {
+	eng *Engine
+}
+
+// Deliver implements Target.
+func (t *logTarget) Deliver(
+	_ context.Context,
+	webhookDB *gorm.DB,
+	d *database.Delivery,
+	_ *Task,
+	_ Scheduler,
+) {
+	t.eng.log.Info(
+		"webhook event delivered to log target",
+		"delivery_id", d.ID,
+		"event_id", d.EventID,
+		"target_id", d.TargetID,
+		"target_name", d.Target.Name,
+		"webhook_id", d.Event.WebhookID,
+		"entrypoint_id", d.Event.EntrypointID,
+		"method", d.Event.Method,
+		"content_type", d.Event.ContentType,
+		"headers", d.Event.Headers,
+		"body", d.Event.Body,
+	)
+
+	t.eng.recordResult(
+		webhookDB, d, 1, true, 0, "", "", 0,
+	)
+
+	t.eng.updateDeliveryStatus(
+		webhookDB, d, database.DeliveryStatusDelivered,
+	)
+}

internal/delivery/target_slack.go

@@ -0,0 +1,299 @@
+package delivery
+
+import (
+	"bytes"
+	"context"
+	"encoding/json"
+	"errors"
+	"fmt"
+	"io"
+	"net/http"
+	"strings"
+	"time"
+
+	"gorm.io/gorm"
+	"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
+// MaxRetries of 0 stays single-attempt fire-and-forget
+// (preserving existing Slack targets), while a positive
+// MaxRetries adds backoff and circuit breaking.
+type slackTarget struct {
+	*httpCore
+
+	client *http.Client
+}
+
+// Deliver implements Target.
+func (t *slackTarget) Deliver(
+	ctx context.Context,
+	webhookDB *gorm.DB,
+	d *database.Delivery,
+	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(
+		map[string]string{"text": msg},
+	)
+	if err != nil {
+		t.eng.log.Error(
+			"failed to marshal Slack payload",
+			"target_id", d.TargetID,
+			"error", err,
+		)
+
+		t.failConfig(webhookDB, d, err)
+
+		return
+	}
+
+	attempt := func() attemptResult {
+		return t.attempt(ctx, cfg, payload)
+	}
+
+	t.deliver(
+		webhookDB, d, task, sched,
+		d.Target.MaxRetries, attempt,
+	)
+}
+
+// failConfig records a first-attempt failure for a delivery
+// that could not be prepared (bad config or unmarshalable
+// payload) and marks it failed.
+func (t *slackTarget) failConfig(
+	webhookDB *gorm.DB,
+	d *database.Delivery,
+	err error,
+) {
+	t.eng.recordResult(
+		webhookDB, d, 1,
+		false, 0, "", err.Error(), 0,
+	)
+
+	t.eng.updateDeliveryStatus(
+		webhookDB, d, 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,
+	payload []byte,
+) attemptResult {
+	start := time.Now()
+
+	req, err := http.NewRequestWithContext(
+		ctx,
+		http.MethodPost,
+		cfg.WebhookURL,
+		bytes.NewReader(payload),
+	)
+	if err != nil {
+		return attemptResult{
+			success: false,
+			errMsg:  err.Error(),
+		}
+	}
+
+	req.Header.Set("Content-Type", "application/json")
+	req.Header.Set("User-Agent", "webhooker/1.0")
+
+	resp, doErr := executeHTTPRequest(t.client, req)
+	durationMs := time.Since(start).Milliseconds()
+
+	if doErr != nil {
+		return attemptResult{
+			success:  false,
+			duration: durationMs,
+			errMsg: fmt.Errorf(
+				"sending request: %w", doErr,
+			).Error(),
+		}
+	}
+
+	defer func() { _ = resp.Body.Close() }()
+
+	return t.readSlackResponse(resp, durationMs)
+}
+
+func (t *slackTarget) readSlackResponse(
+	resp *http.Response,
+	durationMs int64,
+) attemptResult {
+	body, readErr := io.ReadAll(
+		io.LimitReader(resp.Body, maxBodyLog),
+	)
+	if readErr != nil {
+		t.eng.log.Error(
+			"failed to read Slack response body",
+			"error", readErr,
+		)
+	}
+
+	success := resp.StatusCode >= httpSuccessMin &&
+		resp.StatusCode < httpSuccessMax
+
+	errMsg := ""
+	if !success {
+		errMsg = fmt.Sprintf("HTTP %d", resp.StatusCode)
+	}
+
+	return attemptResult{
+		statusCode: resp.StatusCode,
+		respBody:   string(body),
+		duration:   durationMs,
+		success:    success,
+		errMsg:     errMsg,
+	}
+}
+
+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(
+	event *database.Event,
+) string {
+	var b strings.Builder
+
+	b.WriteString("*Webhook Event Received*\n")
+
+	fmt.Fprintf(
+		&b, "*Method:* `%s`\n", event.Method,
+	)
+
+	fmt.Fprintf(
+		&b,
+		"*Content-Type:* `%s`\n",
+		event.ContentType,
+	)
+
+	fmt.Fprintf(
+		&b,
+		"*Timestamp:* `%s`\n",
+		event.CreatedAt.UTC().Format(time.RFC3339),
+	)
+
+	fmt.Fprintf(
+		&b,
+		"*Body Size:* %d bytes\n",
+		len(event.Body),
+	)
+
+	if event.Body == "" {
+		b.WriteString("\n_(empty body)_\n")
+
+		return b.String()
+	}
+
+	if formatted := formatJSONBody(event.Body); formatted != "" {
+		b.WriteString(formatted)
+
+		return b.String()
+	}
+
+	formatRawBody(&b, event.Body)
+
+	return b.String()
+}
+
+func formatJSONBody(body string) string {
+	var parsed json.RawMessage
+	if json.Unmarshal([]byte(body), &parsed) != nil {
+		return ""
+	}
+
+	var pretty bytes.Buffer
+	if json.Indent(&pretty, parsed, "", "  ") != nil {
+		return ""
+	}
+
+	var b strings.Builder
+
+	b.WriteString("\n```\n")
+
+	prettyStr := pretty.String()
+
+	const maxPayloadDisplay = 3500
+	if len(prettyStr) > maxPayloadDisplay {
+		b.WriteString(prettyStr[:maxPayloadDisplay])
+		b.WriteString("\n... (truncated)")
+	} else {
+		b.WriteString(prettyStr)
+	}
+
+	b.WriteString("\n```\n")
+
+	return b.String()
+}
+
+func formatRawBody(b *strings.Builder, body string) {
+	b.WriteString("\n```\n")
+
+	const maxRawDisplay = 3500
+	if len(body) > maxRawDisplay {
+		b.WriteString(body[:maxRawDisplay])
+		b.WriteString("\n... (truncated)")
+	} else {
+		b.WriteString(body)
+	}
+
+	b.WriteString("\n```\n")
+}

internal/handlers/auth.go

@@ -19,7 +19,7 @@ func (h *Handlers) HandleLoginPage() http.HandlerFunc {
 
 		// Render login page
 		data := map[string]any{
-			"Error": "",
+			tmplKeyError: "",
 		}
 
 		h.renderTemplate(w, r, "login.html", data)
@@ -86,7 +86,7 @@ func (h *Handlers) renderLoginError(
 	status int,
 ) {
 	data := map[string]any{
-		"Error": msg,
+		tmplKeyError: msg,
 	}
 
 	w.WriteHeader(status)

internal/handlers/export_test.go

@@ -13,12 +13,26 @@ func (s *Handlers) RenderTemplateForTest(
 	s.renderTemplate(w, r, pageTemplate, data)
 }
 
-// BuildSlackTargetConfigForTest exposes buildSlackTargetConfig
+// BuildSlackTargetConfigForTest exposes buildURLTargetConfig
-// for use in the handlers_test package.
+// with the Slack target parameters for use in the
+// handlers_test package.
 func (s *Handlers) BuildSlackTargetConfigForTest(
 	w http.ResponseWriter,
 	r *http.Request,
 	targetURL string,
 ) (string, error) {
-	return s.buildSlackTargetConfig(w, r, targetURL)
+	return s.buildURLTargetConfig(
+		w, r, targetURL, "webhookUrl",
+		"Webhook URL is required for Slack targets",
+	)
+}
+
+// BuildDatabaseTargetConfigForTest exposes
+// buildDatabaseTargetConfig for use in the handlers_test
+// package.
+func (s *Handlers) BuildDatabaseTargetConfigForTest(
+	w http.ResponseWriter,
+	expiry string,
+) (string, error) {
+	return s.buildDatabaseTargetConfig(w, expiry)
 }

internal/handlers/handlers.go

@@ -30,6 +30,11 @@ const (
 	defaultRetentionDays = 30
 	// paginationPerPage is the number of items per page.
 	paginationPerPage = 25
+
+	// tmplKeyError is the template data key for an error message.
+	tmplKeyError = "Error"
+	// tmplKeyWebhook is the template data key for a webhook.
+	tmplKeyWebhook = "Webhook"
 )
 
 // errInvalidPassword is returned when a password does not match.

internal/handlers/handlers_test.go

@@ -186,3 +186,57 @@ func TestRenderTemplate(t *testing.T) {
 		t, http.StatusInternalServerError, w.Code,
 	)
 }
+
+func TestBuildDatabaseTargetConfig_Valid(t *testing.T) {
+	t.Parallel()
+
+	var h *handlers.Handlers
+
+	app := newTestApp(t, &h)
+	app.RequireStart()
+
+	t.Cleanup(app.RequireStop)
+
+	// Empty expiry: the keep-forever default, empty config.
+	w := httptest.NewRecorder()
+	cfg, err := h.BuildDatabaseTargetConfigForTest(w, "")
+	require.NoError(t, err)
+	assert.Empty(t, cfg)
+
+	// Explicit never is stored as config.
+	w = httptest.NewRecorder()
+	cfg, err = h.BuildDatabaseTargetConfigForTest(w, "never")
+	require.NoError(t, err)
+	assert.JSONEq(t, `{"expiry":"never"}`, cfg)
+
+	// A positive duration is stored as config.
+	w = httptest.NewRecorder()
+	cfg, err = h.BuildDatabaseTargetConfigForTest(w, "720h")
+	require.NoError(t, err)
+	assert.JSONEq(t, `{"expiry":"720h"}`, cfg)
+}
+
+func TestBuildDatabaseTargetConfig_RejectsBadExpiry(
+	t *testing.T,
+) {
+	t.Parallel()
+
+	var h *handlers.Handlers
+
+	app := newTestApp(t, &h)
+	app.RequireStart()
+
+	t.Cleanup(app.RequireStop)
+
+	for _, bad := range []string{"nonsense", "7d", "-5h"} {
+		w := httptest.NewRecorder()
+		cfg, err := h.BuildDatabaseTargetConfigForTest(w, bad)
+
+		require.Error(t, err, "expiry %q", bad)
+		assert.Empty(t, cfg)
+		assert.Equal(
+			t, http.StatusBadRequest, w.Code,
+			"expiry %q should be rejected with 400", bad,
+		)
+	}
+}

internal/handlers/source_management.go

@@ -5,6 +5,7 @@ import (
 	"errors"
 	"net/http"
 	"strconv"
+	"strings"
 
 	"github.com/go-chi/chi"
 	"github.com/google/uuid"
@@ -106,7 +107,7 @@ func (h *Handlers) buildWebhookListItems(
 func (h *Handlers) HandleSourceCreate() http.HandlerFunc {
 	return func(w http.ResponseWriter, r *http.Request) {
 		data := map[string]any{
-			"Error": "",
+			tmplKeyError: "",
 		}
 
 		h.renderTemplate(w, r, "sources_new.html", data)
@@ -145,7 +146,7 @@ func (h *Handlers) HandleSourceCreateSubmit() http.HandlerFunc {
 
 		if name == "" {
 			data := map[string]any{
-				"Error": "Name is required",
+				tmplKeyError: "Name is required",
 			}
 
 			w.WriteHeader(http.StatusBadRequest)
@@ -315,11 +316,11 @@ func (h *Handlers) renderSourceDetail(
 	}
 
 	data := map[string]any{
-		"Webhook":     webhook,
+		tmplKeyWebhook: webhook,
-		"Entrypoints": entrypoints,
+		"Entrypoints":  entrypoints,
-		"Targets":     targets,
+		"Targets":      targets,
-		"Events":      events,
+		"Events":       events,
-		"BaseURL":     scheme + "://" + host,
+		"BaseURL":      scheme + "://" + host,
 	}
 
 	h.renderTemplate(w, r, "source_detail.html", data)
@@ -351,8 +352,8 @@ func (h *Handlers) HandleSourceEdit() http.HandlerFunc {
 		}
 
 		data := map[string]any{
-			"Webhook": webhook,
+			tmplKeyWebhook: webhook,
-			"Error":   "",
+			tmplKeyError:   "",
 		}
 
 		h.renderTemplate(w, r, "source_edit.html", data)
@@ -415,8 +416,8 @@ func (h *Handlers) applyWebhookEdit(
 	name := r.FormValue("name")
 	if name == "" {
 		data := map[string]any{
-			"Webhook": *webhook,
+			tmplKeyWebhook: *webhook,
-			"Error":   "Name is required",
+			tmplKeyError:   "Name is required",
 		}
 
 		w.WriteHeader(http.StatusBadRequest)
@@ -589,15 +590,15 @@ func (h *Handlers) HandleSourceLogs() http.HandlerFunc {
 		}
 
 		data := map[string]any{
-			"Webhook":     webhook,
+			tmplKeyWebhook: webhook,
-			"Events":      evts,
+			"Events":       evts,
-			"Page":        page,
+			"Page":         page,
-			"TotalPages":  totalPages,
+			"TotalPages":   totalPages,
-			"TotalEvents": total,
+			"TotalEvents":  total,
-			"HasPrev":     page > 1,
+			"HasPrev":      page > 1,
-			"HasNext":     page < totalPages,
+			"HasNext":      page < totalPages,
-			"PrevPage":    page - 1,
+			"PrevPage":     page - 1,
-			"NextPage":    page + 1,
+			"NextPage":     page + 1,
 		}
 
 		h.renderTemplate(w, r, "source_logs.html", data)
@@ -815,6 +816,7 @@ func (h *Handlers) processTargetCreate(
 	targetType := database.TargetType(r.FormValue("type"))
 	targetURL := r.FormValue("url")
 	maxRetriesStr := r.FormValue("max_retries")
+	expiry := r.FormValue("expiry")
 
 	if name == "" {
 		http.Error(
@@ -834,7 +836,7 @@ func (h *Handlers) processTargetCreate(
 	}
 
 	configJSON, err := h.buildTargetConfig(
-		w, r, targetType, targetURL,
+		w, r, targetType, targetURL, expiry,
 	)
 	if err != nil {
 		return
@@ -892,18 +894,28 @@ func parseNonNegativeInt(s string) int {
 }
 
 // buildTargetConfig builds the JSON config string for a target.
+// The expiry form value is read by the caller (which bounds the
+// request body) and applies to database targets only.
 func (h *Handlers) buildTargetConfig(
 	w http.ResponseWriter,
 	r *http.Request,
 	targetType database.TargetType,
-	targetURL string,
+	targetURL, expiry string,
 ) (string, error) {
 	switch targetType {
 	case database.TargetTypeHTTP:
-		return h.buildHTTPTargetConfig(w, r, targetURL)
+		return h.buildURLTargetConfig(
+			w, r, targetURL, "url",
+			"URL is required for HTTP targets",
+		)
 	case database.TargetTypeSlack:
-		return h.buildSlackTargetConfig(w, r, targetURL)
+		return h.buildURLTargetConfig(
-	case database.TargetTypeDatabase, database.TargetTypeLog:
+			w, r, targetURL, "webhookUrl",
+			"Webhook URL is required for Slack targets",
+		)
+	case database.TargetTypeDatabase:
+		return h.buildDatabaseTargetConfig(w, expiry)
+	case database.TargetTypeLog:
 		return "", nil
 	default:
 		http.Error(
@@ -915,16 +927,18 @@ func (h *Handlers) buildTargetConfig(
 	}
 }
 
-// buildHTTPTargetConfig builds config JSON for an HTTP target.
+// buildURLTargetConfig builds config JSON for a target whose
-func (h *Handlers) buildHTTPTargetConfig(
+// configuration is a single SSRF-validated URL stored under
+// configKey. missingMsg is the error shown when no URL is given.
+func (h *Handlers) buildURLTargetConfig(
 	w http.ResponseWriter,
 	r *http.Request,
-	targetURL string,
+	targetURL, configKey, missingMsg string,
 ) (string, error) {
 	if targetURL == "" {
 		http.Error(
 			w,
-			"URL is required for HTTP targets",
+			missingMsg,
 			http.StatusBadRequest,
 		)
 
@@ -949,7 +963,7 @@ func (h *Handlers) buildHTTPTargetConfig(
 		return "", err
 	}
 
-	cfg := map[string]any{"url": targetURL}
+	cfg := map[string]any{configKey: targetURL}
 
 	configBytes, err := json.Marshal(cfg)
 	if err != nil {
@@ -964,41 +978,33 @@ func (h *Handlers) buildHTTPTargetConfig(
 	return string(configBytes), nil
 }
 
-// buildSlackTargetConfig builds config JSON for a Slack target.
+// buildDatabaseTargetConfig builds config JSON for a database
-func (h *Handlers) buildSlackTargetConfig(
+// (archive) target. The optional expiry (a form value read by
+// the caller, which bounds the request body) is validated here,
+// at creation time, so an unparseable value is rejected with a
+// 400 instead of failing every subsequent delivery. An empty
+// expiry yields an empty config (the keep-forever default).
+func (h *Handlers) buildDatabaseTargetConfig(
 	w http.ResponseWriter,
-	r *http.Request,
+	expiry string,
-	targetURL string,
 ) (string, error) {
-	if targetURL == "" {
+	expiry = strings.TrimSpace(expiry)
-		http.Error(
+	if expiry == "" {
-			w,
+		return "", nil
-			"Webhook URL is required for Slack targets",
-			http.StatusBadRequest,
-		)
-
-		return "", errMissingURL
 	}
 
-	err := delivery.ValidateTargetURL(
+	err := delivery.ValidateArchiveExpiry(expiry)
-		r.Context(), targetURL,
-	)
 	if err != nil {
-		h.log.Warn(
-			"target URL blocked by SSRF protection",
-			"url", targetURL,
-			"error", err,
-		)
 		http.Error(
 			w,
-			"Invalid target URL: "+err.Error(),
+			"Invalid archive expiry: "+err.Error(),
 			http.StatusBadRequest,
 		)
 
 		return "", err
 	}
 
-	cfg := map[string]any{"webhookUrl": targetURL}
+	cfg := map[string]any{"expiry": expiry}
 
 	configBytes, err := json.Marshal(cfg)
 	if err != nil {

internal/handlers/webhook.go

@@ -329,6 +329,7 @@ func (h *Handlers) buildDeliveryTasks(
 			DeliveryID:   dlv.ID,
 			EventID:      event.ID,
 			WebhookID:    entrypoint.WebhookID,
+			EntrypointID: entrypoint.ID,
 			TargetID:     targets[i].ID,
 			TargetName:   targets[i].Name,
 			TargetType:   targets[i].Type,

internal/middleware/middleware.go

@@ -265,6 +265,26 @@ func (s *Middleware) SecurityHeaders() func(http.Handler) http.Handler {
 	}
 }
 
+// NoCache returns middleware that instructs browsers and
+// intermediary proxies not to cache the response. It sets
+// Cache-Control: no-store and Pragma: no-cache (the latter for
+// older HTTP/1.0 intermediaries). Apply it to authenticated pages
+// so webhook configuration and captured event data are not stored
+// by caches.
+func (s *Middleware) NoCache() func(http.Handler) http.Handler {
+	return func(next http.Handler) http.Handler {
+		return http.HandlerFunc(func(
+			w http.ResponseWriter,
+			r *http.Request,
+		) {
+			w.Header().Set("Cache-Control", "no-store")
+			w.Header().Set("Pragma", "no-cache")
+
+			next.ServeHTTP(w, r)
+		})
+	}
+}
+
 // MaxBodySize returns middleware that limits the request body size
 // for POST requests. If the body exceeds the given limit in
 // bytes, the server returns 413 Request Entity Too Large. This

internal/middleware/middleware_test.go

@@ -387,6 +387,45 @@ func TestRequireAuth_UnauthenticatedSession_RedirectsToLogin(
 	assert.Equal(t, "/pages/login", w.Header().Get("Location"))
 }
 
+// --- NoCache Middleware Tests ---
+
+func TestNoCache_SetsHeaders(t *testing.T) {
+	t.Parallel()
+
+	m, _ := testMiddleware(t, config.EnvironmentDev)
+
+	var called bool
+
+	handler := m.NoCache()(http.HandlerFunc(
+		func(w http.ResponseWriter, _ *http.Request) {
+			called = true
+
+			w.WriteHeader(http.StatusOK)
+		},
+	))
+
+	req := httptest.NewRequestWithContext(
+		context.Background(),
+		http.MethodGet, "/sources", nil,
+	)
+	w := httptest.NewRecorder()
+
+	handler.ServeHTTP(w, req)
+
+	assert.True(
+		t, called,
+		"NoCache middleware should call the next handler",
+	)
+	assert.Equal(
+		t, "no-store",
+		w.Header().Get("Cache-Control"),
+	)
+	assert.Equal(
+		t, "no-cache",
+		w.Header().Get("Pragma"),
+	)
+}
+
 // --- Helper Tests ---
 
 func TestIpFromHostPort(t *testing.T) {
@@ -445,8 +484,13 @@ func metricsAuthMiddleware(
 	return middleware.NewForTest(log, cfg, sessManager)
 }
 
-func TestMetricsAuth_ValidCredentials(t *testing.T) {
+// runMetricsAuthRequest sends a GET /metrics request with the
-	t.Parallel()
+// given basic-auth password through MetricsAuth and reports
+// whether the wrapped handler ran plus the recorded response.
+func runMetricsAuthRequest(
+	t *testing.T, password string,
+) (bool, *httptest.ResponseRecorder) {
+	t.Helper()
 
 	m := metricsAuthMiddleware(t)
 
@@ -464,12 +508,20 @@ func TestMetricsAuth_ValidCredentials(t *testing.T) {
 		context.Background(),
 		http.MethodGet, "/metrics", nil,
 	)
-	req.SetBasicAuth("admin", "secret")
+	req.SetBasicAuth("admin", password)
 
 	w := httptest.NewRecorder()
 
 	handler.ServeHTTP(w, req)
 
+	return called, w
+}
+
+func TestMetricsAuth_ValidCredentials(t *testing.T) {
+	t.Parallel()
+
+	called, w := runMetricsAuthRequest(t, "secret")
+
 	assert.True(
 		t, called,
 		"handler should be called with valid basic auth",
@@ -480,27 +532,7 @@ func TestMetricsAuth_ValidCredentials(t *testing.T) {
 func TestMetricsAuth_InvalidCredentials(t *testing.T) {
 	t.Parallel()
 
-	m := metricsAuthMiddleware(t)
+	called, w := runMetricsAuthRequest(t, "wrong-password")
-
-	var called bool
-
-	handler := m.MetricsAuth()(http.HandlerFunc(
-		func(w http.ResponseWriter, _ *http.Request) {
-			called = true
-
-			w.WriteHeader(http.StatusOK)
-		},
-	))
-
-	req := httptest.NewRequestWithContext(
-		context.Background(),
-		http.MethodGet, "/metrics", nil,
-	)
-	req.SetBasicAuth("admin", "wrong-password")
-
-	w := httptest.NewRecorder()
-
-	handler.ServeHTTP(w, req)
 
 	assert.False(
 		t, called,

internal/server/routes.go

@@ -91,6 +91,7 @@ func (s *Server) setupRoutes() {
 func (s *Server) setupPageRoutes() {
 	s.router.Route("/pages", func(r chi.Router) {
 		r.Use(s.mw.CSRF())
+		r.Use(s.mw.NoCache())
 		r.Use(s.mw.MaxBodySize(maxFormBodySize))
 
 		r.Group(func(r chi.Router) {
@@ -106,6 +107,7 @@ func (s *Server) setupPageRoutes() {
 func (s *Server) setupUserRoutes() {
 	s.router.Route("/user/{username}", func(r chi.Router) {
 		r.Use(s.mw.CSRF())
+		r.Use(s.mw.NoCache())
 		r.Use(s.mw.RequireAuth())
 		r.Get("/", s.h.HandleProfile())
 	})
@@ -114,6 +116,7 @@ func (s *Server) setupUserRoutes() {
 func (s *Server) setupSourceRoutes() {
 	s.router.Route("/sources", func(r chi.Router) {
 		r.Use(s.mw.CSRF())
+		r.Use(s.mw.NoCache())
 		r.Use(s.mw.RequireAuth())
 		r.Use(s.mw.MaxBodySize(maxFormBodySize))
 		r.Get("/", s.h.HandleSourceList())
@@ -123,6 +126,7 @@ func (s *Server) setupSourceRoutes() {
 
 	s.router.Route("/source/{sourceID}", func(r chi.Router) {
 		r.Use(s.mw.CSRF())
+		r.Use(s.mw.NoCache())
 		r.Use(s.mw.RequireAuth())
 		r.Use(s.mw.MaxBodySize(maxFormBodySize))
 		r.Get("/", s.h.HandleSourceDetail())

internal/session/session_test.go

@@ -173,8 +173,18 @@ func TestSetUser_SetsAllFields(t *testing.T) {
 	)
 }
 
-func TestGetUserID(t *testing.T) {
+// testSessionGetter exercises a session string getter before and
-	t.Parallel()
+// after SetUser: it must report false with an empty value on a
+// fresh session, then true with the expected value once
+// SetUser(sess, "user-xyz", "bob") has run.
+func testSessionGetter(
+	t *testing.T,
+	get func(
+		*session.Session, *sessions.Session,
+	) (string, bool),
+	expected string,
+) {
+	t.Helper()
 
 	s := testSession(t)
 
@@ -185,44 +195,46 @@ func TestGetUserID(t *testing.T) {
 	require.NoError(t, err)
 
 	// Before setting user
-	userID, ok := s.GetUserID(sess)
+	val, ok := get(s, sess)
 	assert.False(
-		t, ok, "should return false when no user ID is set",
+		t, ok, "should return false before SetUser",
 	)
-	assert.Empty(t, userID)
+	assert.Empty(t, val)
 
 	// After setting user
 	s.SetUser(sess, "user-xyz", "bob")
 
-	userID, ok = s.GetUserID(sess)
+	val, ok = get(s, sess)
 	assert.True(t, ok)
-	assert.Equal(t, "user-xyz", userID)
+	assert.Equal(t, expected, val)
+}
+
+func TestGetUserID(t *testing.T) {
+	t.Parallel()
+
+	testSessionGetter(
+		t,
+		func(
+			s *session.Session, sess *sessions.Session,
+		) (string, bool) {
+			return s.GetUserID(sess)
+		},
+		"user-xyz",
+	)
 }
 
 func TestGetUsername(t *testing.T) {
 	t.Parallel()
 
-	s := testSession(t)
+	testSessionGetter(
-
+		t,
-	req := httptest.NewRequestWithContext(
+		func(
-		context.Background(), http.MethodGet, "/", nil)
+			s *session.Session, sess *sessions.Session,
-
+		) (string, bool) {
-	sess, err := s.Get(req)
+			return s.GetUsername(sess)
-	require.NoError(t, err)
+		},
-
+		"bob",
-	// Before setting user
-	username, ok := s.GetUsername(sess)
-	assert.False(
-		t, ok, "should return false when no username is set",
 	)
-	assert.Empty(t, username)
-
-	// After setting user
-	s.SetUser(sess, "user-xyz", "bob")
-
-	username, ok = s.GetUsername(sess)
-	assert.True(t, ok)
-	assert.Equal(t, "bob", username)
 }
 
 // --- IsAuthenticated Tests ---

internal/session/testing.go

@@ -12,7 +12,12 @@ import (
 // middleware and handler tests to use real session functionality. The key
 // parameter is the raw 32-byte authentication key used for session encryption
 // and CSRF cookie signing.
-func NewForTest(store *sessions.CookieStore, cfg *config.Config, log *slog.Logger, key []byte) *Session {
+func NewForTest(
+	store *sessions.CookieStore,
+	cfg *config.Config,
+	log *slog.Logger,
+	key []byte,
+) *Session {
 	return &Session{
 		store:  store,
 		key:    key,

script/bootstrap

@@ -10,11 +10,11 @@ set -eu
 
 ROOT="$(cd "$(dirname "$0")/.." && pwd -P)"
 
-# Pinned versions, 2026-07-07. Never "latest"; exact versions only.
+# Pinned versions, 2026-08-07. Never "latest"; exact versions only.
-GOLANGCI_LINT_VERSION="2.11.3"
+GOLANGCI_LINT_VERSION="2.12.2"
-# sha256 of golangci-lint-2.11.3-linux-<arch>.tar.gz release archives
+# sha256 of golangci-lint-2.12.2-linux-<arch>.tar.gz release archives
-GOLANGCI_LINT_SHA256_AMD64="87bb8cddbcc825d5778b64e8a91b46c0526b247f4e2f2904dea74ec7450475d1"
+GOLANGCI_LINT_SHA256_AMD64="8df580d2670fed8fa984aac0507099af8df275e665215f5c7a2ae3943893a553"
-GOLANGCI_LINT_SHA256_ARM64="ee3d95f301359e7d578e6d99c8ad5aeadbabc5a13009a30b2b0df11c8058afe9"
+GOLANGCI_LINT_SHA256_ARM64="44cd40a8c76c86755375adfeea52cfd3533cb43d7bd647771e0ae065e166df3a"
 
 PKGMGR=""
 SUDO=""

templates/source_detail.html

@@ -113,6 +113,10 @@
                         <input type="url" name="url" placeholder="https://hooks.slack.com/services/..." :disabled="targetType !== 'slack'" class="input text-sm">
                         <p class="text-xs text-gray-500 mt-1">Slack or Mattermost incoming webhook URL. Payloads are pretty-printed in code blocks.</p>
                     </div>
+                    <div x-show="targetType === 'database'">
+                        <input type="text" name="expiry" placeholder="never" :disabled="targetType !== 'database'" class="input text-sm">
+                        <p class="text-xs text-gray-500 mt-1">Archive expiry: "never" (default) keeps rows forever, or a duration like "720h" prunes older rows.</p>
+                    </div>
                     <button type="submit" class="btn-primary text-sm">Add Target</button>
                 </form>
             </div>