Root background loops at context.Background() (closes #97)

The context fx hands an OnStart hook is derived with
context.WithTimeout(ctx, StartTimeout) — 15 seconds by default — and
is cancelled once the start phase ends. It is a start-phase context,
not an application-lifetime one. Two components derived their
long-lived loops from it and so stopped running roughly fifteen
seconds after boot.

Engine.start rooted the entire worker pool, restart recovery, and the
retry sweep in it. Every worker returned on ctx.Done() shortly after
startup, so the process kept receiving and persisting inbound events
while nothing at all forwarded them: deliveryCh filled up and started
logging "delivery channel full" with no consumer left. That is the
whole purpose of the application.

RetentionReaper.start had the same defect. With the default one-hour
RETENTION_SWEEP_INTERVAL the loop was cancelled forty-five minutes
before its first tick, so the reaper never ran a single sweep and
per-webhook event databases grew without bound.

Both now derive their loop context from context.Background(). Their
lifetime is bounded by OnStop, which already cancels and waits on the
WaitGroup, so shutdown is unchanged. Each hook registration moves into
a registerHooks method, the OnStart parameter is named _ so the trap
cannot be reintroduced by silencing an unused-parameter warning, and a
comment at each start explains why the hook context must not be used.
This matches the shape of the same fix applied to the archive sweeper.

The new lifecycle tests drive the genuine registered hooks with an
already-cancelled OnStart context and assert the loops still do work
afterwards — a task delivered, an expired event reaped. Reverting
either fix makes its pair of tests fail. Each component also gets a
shutdown test asserting OnStop cancels the loop and wg.Wait() returns
inside a bounded timeout, so the fix does not trade a startup bug for
a shutdown hang.

iWaitForStatus becomes iWaitForDelivered: every call site waits for
the delivered status, and the two added call sites pushed it past
unparam's threshold for reporting an always-identical argument.

README.md

@@ -531,30 +531,6 @@ 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.
 
-Because reopens only happen on writes, an archive belonging to a webhook
-that has stopped receiving events would never be pruned. A background
-**archive sweeper** closes that gap: on the same interval as the event
-retention reaper (`RETENTION_SWEEP_INTERVAL`) it prunes every archive
-whose database target declares a positive expiry, whether or not the
-webhook is still receiving traffic. The sweep never creates an archive —
-a webhook whose archive file does not yet exist is skipped, not
-initialised — it takes the same per-webhook lock the write path uses, so
-it can never interleave with a write, and it leaves the archive closed
-afterwards so the move-the-file-away workflow keeps working. Archives
-with no expiry, or the expiry `never`, are not touched by the sweep at
-all.
-
-Deleting a webhook releases its archive: the delivery engine's cached
-archive writer is dropped and its file handle closed, so nothing lingers
-after the webhook is gone. The archive **file itself is deliberately
-left on disk**. Unlike the event database — per-webhook working storage
-that is hard-deleted with the webhook — an archive is long-term storage
-an operator may still want to keep or move away for offline retention,
-and destroying it as a side effect of deleting a webhook would be
-unrecoverable. Removing `archive-{webhookID}.db` is the operator's call.
-Deleting a webhook's last `database` target releases the writer the same
-way, and for the same reason leaves the file alone.
-
 The **Slack target type** sends webhook events as formatted messages to
 any Slack-compatible incoming webhook URL (works with Slack, Mattermost,
 and other compatible services). Each message includes event metadata

TODO.md

@@ -28,11 +28,12 @@ databases currently grow without bound.
 
 # Completed Steps
 
-- 2026-08-09 Archive writer lifecycle (#89): deleting a webhook (or its
+- 2026-08-09 Root the delivery engine's worker pool and the retention
-  last `database` target) evicts the cached archive writer and closes
+  reaper's sweep loop at `context.Background()` rather than the fx
-  its handle while deliberately leaving `archive-{webhookID}.db` on
+  `OnStart` hook context (#97), which carries fx's 15s start timeout and
-  disk, and a new `ArchiveSweeper` prunes idle archives on the existing
+  killed both roughly fifteen seconds after boot: the proxy silently
-  `RETENTION_SWEEP_INTERVAL` without ever creating an archive file
+  stopped delivering webhooks entirely, and the reaper never ran a
+  single sweep under its default one-hour interval
 - 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

cmd/webhooker/main.go

@@ -40,15 +40,9 @@ func main() {
 			handlers.New,
 			middleware.New,
 			delivery.New,
-			delivery.NewArchiveSweeper,
 			// Wire *delivery.Engine as delivery.Notifier so the
 			// webhook handler can notify the engine of new deliveries.
 			func(e *delivery.Engine) delivery.Notifier { return e },
-			// Wire *delivery.Engine as delivery.WebhookEvictor so
-			// deleting a webhook releases its archive writer.
-			func(e *delivery.Engine) delivery.WebhookEvictor {
-				return e
-			},
 			server.New,
 		),
 		fx.Invoke(
@@ -56,7 +50,6 @@ func main() {
 				*server.Server,
 				*delivery.Engine,
 				*database.RetentionReaper,
-				*delivery.ArchiveSweeper,
 			) {
 			},
 		),

internal/database/export_test.go

@@ -5,6 +5,8 @@ import (
 	"log/slog"
 	"os"
 	"time"
+
+	"go.uber.org/fx"
 )
 
 // NewTestRetentionReaper builds a RetentionReaper backed by the given
@@ -29,3 +31,26 @@ func NewTestRetentionReaper(
 func (r *RetentionReaper) ExportSweep(ctx context.Context) {
 	r.sweep(ctx)
 }
+
+// ExportRegisterHooks registers the reaper's real fx lifecycle hooks
+// on a lifecycle supplied by a test, so a test can drive the exact
+// OnStart/OnStop functions the application runs and hand OnStart the
+// kind of context fx actually supplies.
+func (r *RetentionReaper) ExportRegisterHooks(lc fx.Lifecycle) {
+	r.registerHooks(lc)
+}
+
+// ExportStart starts the reaper's background loop for tests.
+func (r *RetentionReaper) ExportStart() {
+	r.start()
+}
+
+// ExportStop stops the reaper's background loop for tests.
+func (r *RetentionReaper) ExportStop() {
+	r.stop()
+}
+
+// ExportSetInterval overrides the sweep interval for tests.
+func (r *RetentionReaper) ExportSetInterval(d time.Duration) {
+	r.interval = d
+}

internal/database/retention.go

@@ -56,9 +56,20 @@ func NewRetentionReaper(
 		interval:  params.Config.RetentionSweepInterval,
 	}
 
+	r.registerHooks(lc)
+
+	return r
+}
+
+// registerHooks wires the reaper's start and stop into the fx
+// lifecycle. The start hook's context is deliberately ignored: see
+// start for why the sweep loop must not inherit it.
+func (r *RetentionReaper) registerHooks(lc fx.Lifecycle) {
 	lc.Append(fx.Hook{
-		OnStart: func(ctx context.Context) error {
+		//nolint:contextcheck // Not inheriting the hook context is
-			r.start(ctx)
+		// the point: see start.
+		OnStart: func(_ context.Context) error {
+			r.start()
 
 			return nil
 		},
@@ -68,12 +79,20 @@ func NewRetentionReaper(
 			return nil
 		},
 	})
-
-	return r
 }
 
-func (r *RetentionReaper) start(ctx context.Context) {
+// start launches the background sweep loop.
-	ctx, cancel := context.WithCancel(ctx)
+//
+// The loop's context is derived from context.Background(), NOT from
+// the fx OnStart hook context. The hook context carries fx's start
+// timeout (15s by default) and is cancelled once the start phase
+// completes, so a loop derived from it dies 45 minutes before its
+// first tick under the default one-hour sweep interval, leaving a
+// reaper that never reaps. A long-lived goroutine must outlive the
+// startup phase, so its lifetime is bounded by OnStop instead: stop
+// cancels this context and waits on the WaitGroup.
+func (r *RetentionReaper) start() {
+	ctx, cancel := context.WithCancel(context.Background())
 	r.cancel = cancel
 
 	r.wg.Add(1)

internal/database/retention_lifecycle_test.go

@@ -0,0 +1,209 @@
+package database_test
+
+import (
+	"context"
+	"testing"
+	"time"
+
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+	"go.uber.org/fx"
+	"gorm.io/gorm"
+	"sneak.berlin/go/webhooker/internal/database"
+)
+
+const (
+	// reaperTestInterval is the sweep interval a lifecycle test
+	// runs the reaper at, so a loop that survives startup produces
+	// an observable sweep quickly.
+	reaperTestInterval = 10 * time.Millisecond
+
+	// reaperStopTimeout bounds how long a lifecycle test waits for
+	// the reaper's OnStop hook to return before declaring the
+	// shutdown hung.
+	reaperStopTimeout = 10 * time.Second
+
+	// reaperTestRetentionDays is the retention policy the lifecycle
+	// tests give their webhook.
+	reaperTestRetentionDays = 30
+)
+
+// recordingLifecycle is a minimal fx.Lifecycle that records the
+// hooks a component registers, so a test can invoke the real
+// OnStart/OnStop functions with a context of its choosing.
+type recordingLifecycle struct {
+	hooks []fx.Hook
+}
+
+func (l *recordingLifecycle) Append(h fx.Hook) {
+	l.hooks = append(l.hooks, h)
+}
+
+// startReaperViaHook drives the genuine fx hooks the application
+// registers for the reaper, handing OnStart a context that is
+// already done. It returns the recorded lifecycle so the caller
+// can drive OnStop too.
+func startReaperViaHook(
+	t *testing.T, r *database.RetentionReaper,
+) *recordingLifecycle {
+	t.Helper()
+
+	lc := &recordingLifecycle{}
+	r.ExportRegisterHooks(lc)
+	require.Len(t, lc.hooks, 1)
+
+	// fx hands OnStart a context carrying the application start
+	// timeout, and cancels it when the start phase ends. An
+	// already-cancelled context is that same defect taken to its
+	// limit, and unlike a plain context.Background() it actually
+	// distinguishes a correctly rooted loop from a broken one.
+	hookCtx, cancel := context.WithCancel(context.Background())
+	cancel()
+
+	require.NoError(t, lc.hooks[0].OnStart(hookCtx))
+
+	return lc
+}
+
+// eventGone reports whether an event row has been removed. It
+// takes no *testing.T because it is polled from an
+// assert.Eventually condition, which runs off the test goroutine
+// where testify assertions must not be used.
+func eventGone(db *gorm.DB, eventID string) bool {
+	var n int64
+
+	err := db.Unscoped().Model(&database.Event{}).
+		Where("id = ?", eventID).Count(&n).Error
+	if err != nil {
+		return false
+	}
+
+	return n == 0
+}
+
+// seedExpiredWebhook creates a webhook with a finite retention
+// policy plus one long-expired event chain, and returns the
+// webhook's database and the chain's event ID.
+func seedExpiredWebhook(
+	t *testing.T, env *retentionTestEnv,
+) (*gorm.DB, string) {
+	t.Helper()
+
+	webhookID := createWebhook(
+		t, env.mainDB.DB(), reaperTestRetentionDays,
+	)
+
+	db, err := env.mgr.GetDB(webhookID)
+	require.NoError(t, err)
+
+	chain := seedEventChain(
+		t, db, webhookID,
+		time.Now().Add(-365*24*time.Hour),
+	)
+
+	return db, chain.eventID
+}
+
+// TestRetentionReaper_LoopOutlivesStartHookContext is the
+// regression test for a reaper that never reaped. fx calls
+// OnStart with a context carrying the application's start timeout
+// (15s by default) and cancels it when the start phase ends, so a
+// sweep loop rooted in it is dead three quarters of an hour
+// before its first tick under the default one-hour interval, and
+// per-webhook event databases grow without bound exactly as they
+// did before retention existed.
+//
+// Driving OnStart with an already-cancelled context is that
+// defect taken to its limit: a loop that inherits the hook
+// context never ticks once, while a correctly rooted loop keeps
+// sweeping for as long as the process lives.
+func TestRetentionReaper_LoopOutlivesStartHookContext(
+	t *testing.T,
+) {
+	t.Parallel()
+
+	env := setupRetentionTest(t)
+
+	db, eventID := seedExpiredWebhook(t, env)
+
+	env.reaper.ExportSetInterval(reaperTestInterval)
+
+	lc := startReaperViaHook(t, env.reaper)
+	t.Cleanup(func() {
+		_ = lc.hooks[0].OnStop(context.Background())
+	})
+
+	assert.Eventually(
+		t,
+		func() bool { return eventGone(db, eventID) },
+		5*time.Second,
+		reaperTestInterval,
+		"the sweep loop must keep running after the start "+
+			"hook's context is done; it reaped nothing, so it "+
+			"inherited the hook context and died",
+	)
+}
+
+// TestRetentionReaper_StopHookStopsLoop proves the fix did not
+// trade a startup bug for a shutdown hang: now that the sweep
+// loop no longer observes the start hook's cancellation, OnStop
+// is the only thing that can stop it, and it must both return
+// promptly and actually leave the loop stopped.
+func TestRetentionReaper_StopHookStopsLoop(t *testing.T) {
+	t.Parallel()
+
+	env := setupRetentionTest(t)
+
+	db, eventID := seedExpiredWebhook(t, env)
+
+	env.reaper.ExportSetInterval(reaperTestInterval)
+
+	lc := startReaperViaHook(t, env.reaper)
+
+	// Let the loop prove it is running before stopping it, so a
+	// fast OnStop cannot pass by stopping something already dead.
+	require.Eventually(
+		t,
+		func() bool { return eventGone(db, eventID) },
+		5*time.Second,
+		reaperTestInterval,
+	)
+
+	var stopErr error
+
+	stopped := make(chan struct{})
+
+	go func() {
+		defer close(stopped)
+
+		// stop blocks on the loop's WaitGroup, so returning at all
+		// proves the goroutine observed the cancellation.
+		stopErr = lc.hooks[0].OnStop(context.Background())
+	}()
+
+	select {
+	case <-stopped:
+	case <-time.After(reaperStopTimeout):
+		t.Fatal(
+			"OnStop did not return: the retention reaper's " +
+				"WaitGroup is still waiting on a loop that never " +
+				"observed cancellation",
+		)
+	}
+
+	require.NoError(t, stopErr)
+
+	// With the loop gone, a newly expired chain must survive.
+	survivor := seedEventChain(
+		t, db, "stopped-webhook",
+		time.Now().Add(-365*24*time.Hour),
+	)
+
+	time.Sleep(20 * reaperTestInterval)
+
+	assert.False(
+		t,
+		eventGone(db, survivor.eventID),
+		"a stopped reaper must not sweep anything",
+	)
+}

internal/delivery/archive_sweeper.go

@@ -1,189 +0,0 @@
-package delivery
-
-import (
-	"context"
-	"log/slog"
-	"sync"
-	"time"
-
-	"go.uber.org/fx"
-	"sneak.berlin/go/webhooker/internal/config"
-	"sneak.berlin/go/webhooker/internal/database"
-	"sneak.berlin/go/webhooker/internal/logger"
-)
-
-// ArchiveSweeperParams holds the fx dependencies for the
-// ArchiveSweeper.
-type ArchiveSweeperParams struct {
-	fx.In
-
-	Config   *config.Config
-	Database *database.Database
-	Engine   *Engine
-	Logger   *logger.Logger
-}
-
-// ArchiveSweeper periodically prunes expired rows from
-// per-webhook archive databases whose database target carries a
-// positive expiry.
-//
-// Without it, pruning happens only when an archive is
-// (re)opened, and archives are only ever reopened by writes: an
-// archive belonging to a webhook that has stopped receiving
-// events would keep its expired rows forever. The sweep closes
-// that gap without changing anything for archives whose expiry
-// is unset or "never".
-//
-// It reuses Config.RetentionSweepInterval rather than
-// introducing a second interval: this is a retention sweep with
-// the same semantics as the event retention reaper.
-type ArchiveSweeper struct {
-	db       *database.Database
-	eng      *Engine
-	log      *slog.Logger
-	interval time.Duration
-	cancel   context.CancelFunc
-	wg       sync.WaitGroup
-}
-
-// NewArchiveSweeper creates the archive sweeper and registers
-// its fx lifecycle hooks. The background sweep loop starts on
-// OnStart and stops cleanly on OnStop via context cancellation.
-func NewArchiveSweeper(
-	lc fx.Lifecycle,
-	params ArchiveSweeperParams,
-) *ArchiveSweeper {
-	s := &ArchiveSweeper{
-		db:       params.Database,
-		eng:      params.Engine,
-		log:      params.Logger.Get(),
-		interval: params.Config.RetentionSweepInterval,
-	}
-
-	lc.Append(fx.Hook{
-		OnStart: func(ctx context.Context) error {
-			s.start(ctx)
-
-			return nil
-		},
-		OnStop: func(_ context.Context) error {
-			s.stop()
-
-			return nil
-		},
-	})
-
-	return s
-}
-
-func (s *ArchiveSweeper) start(ctx context.Context) {
-	ctx, cancel := context.WithCancel(ctx)
-	s.cancel = cancel
-
-	s.wg.Add(1)
-
-	go s.run(ctx)
-
-	s.log.Info(
-		"archive sweeper started",
-		"interval", s.interval.String(),
-	)
-}
-
-func (s *ArchiveSweeper) stop() {
-	s.log.Info("archive sweeper stopping")
-
-	if s.cancel != nil {
-		s.cancel()
-	}
-
-	s.wg.Wait()
-	s.log.Info("archive sweeper stopped")
-}
-
-func (s *ArchiveSweeper) run(ctx context.Context) {
-	defer s.wg.Done()
-
-	ticker := time.NewTicker(s.interval)
-	defer ticker.Stop()
-
-	for {
-		select {
-		case <-ctx.Done():
-			return
-		case <-ticker.C:
-			s.sweep(ctx)
-		}
-	}
-}
-
-// sweep prunes every archive whose database target declares a
-// positive expiry. Targets belonging to a deleted webhook are
-// soft-deleted along with it, so GORM's default scope already
-// excludes them.
-//
-// A failure for one webhook is logged and the sweep continues,
-// matching how the write path already treats a prune error as
-// non-fatal.
-func (s *ArchiveSweeper) sweep(ctx context.Context) {
-	var targets []database.Target
-
-	err := s.db.DB().
-		Model(&database.Target{}).
-		Where("type = ?", database.TargetTypeDatabase).
-		Find(&targets).Error
-	if err != nil {
-		s.log.Error(
-			"archive sweep: failed to list database targets",
-			"error", err,
-		)
-
-		return
-	}
-
-	for i := range targets {
-		select {
-		case <-ctx.Done():
-			return
-		default:
-		}
-
-		s.sweepTarget(&targets[i])
-	}
-}
-
-// sweepTarget prunes the archive of a single database target.
-// A missing, empty, or "never" expiry parses as a zero duration
-// and is skipped entirely, so those archives keep exactly the
-// behaviour they had before the sweep existed.
-func (s *ArchiveSweeper) sweepTarget(target *database.Target) {
-	expiry, err := parseArchiveExpiry(target.Config)
-	if err != nil {
-		s.log.Error(
-			"archive sweep: invalid database target config",
-			"webhook_id", target.WebhookID,
-			"target_id", target.ID,
-			"error", err,
-		)
-
-		return
-	}
-
-	if expiry <= 0 {
-		return
-	}
-
-	if s.eng == nil || s.eng.dbTarget == nil {
-		return
-	}
-
-	err = s.eng.dbTarget.sweepWebhook(target.WebhookID, expiry)
-	if err != nil {
-		s.log.Error(
-			"archive sweep: failed to prune archive",
-			"webhook_id", target.WebhookID,
-			"target_id", target.ID,
-			"error", err,
-		)
-	}
-}

internal/delivery/archive_sweeper_test.go

@@ -1,425 +0,0 @@
-package delivery_test
-
-import (
-	"context"
-	"database/sql"
-	"fmt"
-	"net/http"
-	"path/filepath"
-	"sync"
-	"testing"
-	"time"
-
-	"github.com/google/uuid"
-	"github.com/stretchr/testify/assert"
-	"github.com/stretchr/testify/require"
-	"gorm.io/driver/sqlite"
-	"gorm.io/gorm"
-	"gorm.io/gorm/clause"
-	_ "modernc.org/sqlite" // Pure Go SQLite driver.
-	"sneak.berlin/go/webhooker/internal/database"
-	"sneak.berlin/go/webhooker/internal/delivery"
-)
-
-const (
-	// sweepRowOld and sweepRowNew are the event ids
-	// seedArchiveRows assigns to the first and second seeded
-	// rows.
-	sweepRowOld = "ev-0"
-	sweepRowNew = "ev-1"
-
-	// sweepConcurrentWrites is how many deliveries the
-	// concurrent write-plus-sweep test races against the sweep.
-	sweepConcurrentWrites = 20
-)
-
-// sweeperEnv bundles the pieces an archive sweep test drives:
-// a main configuration database holding webhooks and targets, a
-// delivery engine owning the archive writer registry, and the
-// data directory the archive files live in.
-type sweeperEnv struct {
-	sweeper *delivery.ArchiveSweeper
-	eng     *delivery.Engine
-	mainDB  *database.Database
-	dataDir string
-}
-
-func setupSweeperTest(t *testing.T) *sweeperEnv {
-	t.Helper()
-
-	dataDir := t.TempDir()
-	log := archiveTestLogger()
-
-	sqlDB, err := sql.Open(
-		"sqlite",
-		fmt.Sprintf(
-			"file:%s?mode=rwc",
-			filepath.Join(dataDir, "main.db"),
-		),
-	)
-	require.NoError(t, err)
-
-	t.Cleanup(func() { _ = sqlDB.Close() })
-
-	gdb, err := gorm.Open(
-		sqlite.Dialector{Conn: sqlDB}, &gorm.Config{},
-	)
-	require.NoError(t, err)
-
-	mainDB := database.NewTestDatabase(gdb)
-	require.NoError(t, mainDB.Migrate())
-
-	eng := delivery.NewTestEngineWithDB(
-		mainDB,
-		database.NewTestWebhookDBManager(dataDir),
-		log,
-		&http.Client{Timeout: 5 * time.Second},
-		1,
-	)
-
-	return &sweeperEnv{
-		sweeper: delivery.NewTestArchiveSweeper(
-			mainDB, eng, log,
-		),
-		eng:     eng,
-		mainDB:  mainDB,
-		dataDir: dataDir,
-	}
-}
-
-// archivePath returns where the engine keeps a webhook's
-// archive file.
-func (env *sweeperEnv) archivePath(webhookID string) string {
-	return filepath.Join(
-		env.dataDir, fmt.Sprintf("archive-%s.db", webhookID),
-	)
-}
-
-// seedDatabaseTarget creates a webhook with one database target
-// carrying the given target config JSON, and returns the
-// webhook id.
-func (env *sweeperEnv) seedDatabaseTarget(
-	t *testing.T, configJSON string,
-) string {
-	t.Helper()
-
-	wh := &database.Webhook{
-		UserID: uuid.New().String(),
-		Name:   "sweep-test",
-	}
-	require.NoError(
-		t,
-		env.mainDB.DB().
-			Omit(clause.Associations).
-			Create(wh).Error,
-	)
-
-	tgt := &database.Target{
-		WebhookID: wh.ID,
-		Name:      "archive",
-		Type:      database.TargetTypeDatabase,
-		Active:    true,
-		Config:    configJSON,
-	}
-	require.NoError(
-		t,
-		env.mainDB.DB().
-			Omit(clause.Associations).
-			Create(tgt).Error,
-	)
-
-	return wh.ID
-}
-
-// seedArchiveRows creates the archive file for a webhook and
-// inserts one row per supplied archived-at timestamp, returning
-// the archive path. The handle is closed before returning, so
-// the archive is idle exactly as it would be with no traffic.
-func (env *sweeperEnv) seedArchiveRows(
-	t *testing.T, webhookID string, archivedAt ...time.Time,
-) string {
-	t.Helper()
-
-	path := env.archivePath(webhookID)
-
-	sqlDB, err := sql.Open(
-		"sqlite", fmt.Sprintf("file:%s?mode=rwc", path),
-	)
-	require.NoError(t, err)
-
-	gdb, err := gorm.Open(
-		sqlite.Dialector{Conn: sqlDB}, &gorm.Config{},
-	)
-	require.NoError(t, err)
-
-	require.NoError(
-		t, gdb.AutoMigrate(&delivery.ExportArchivedEvent{}),
-	)
-
-	for i, at := range archivedAt {
-		row := delivery.ExportArchivedEvent{
-			EventID:    fmt.Sprintf("ev-%d", i),
-			WebhookID:  webhookID,
-			Method:     http.MethodPost,
-			Body:       `{"seeded":true}`,
-			ArchivedAt: at,
-		}
-		require.NoError(t, gdb.Create(&row).Error)
-	}
-
-	require.NoError(t, sqlDB.Close())
-
-	return path
-}
-
-// archivedEventIDs returns the event ids currently stored in an
-// archive file, read through a separate read-only handle.
-func archivedEventIDs(
-	t *testing.T, path string,
-) []string {
-	t.Helper()
-
-	var rows []delivery.ExportArchivedEvent
-
-	rdb := openArchiveDBForRead(t, path)
-	require.NoError(t, rdb.Order("event_id").Find(&rows).Error)
-
-	ids := make([]string, 0, len(rows))
-	for i := range rows {
-		ids = append(ids, rows[i].EventID)
-	}
-
-	return ids
-}
-
-// TestArchiveSweep_PrunesIdleArchive is the core regression
-// test for this issue: an archive that receives no further
-// writes must still lose its expired rows. Before the sweeper
-// existed, pruning only ever ran on a write-triggered reopen,
-// so an idle archive kept expired rows forever.
-func TestArchiveSweep_PrunesIdleArchive(t *testing.T) {
-	t.Parallel()
-
-	env := setupSweeperTest(t)
-
-	webhookID := env.seedDatabaseTarget(t, `{"expiry":"1h"}`)
-
-	now := time.Now()
-	path := env.seedArchiveRows(
-		t, webhookID,
-		now.Add(-48*time.Hour),
-		now.Add(-time.Minute),
-	)
-
-	require.Equal(
-		t, []string{sweepRowOld, sweepRowNew},
-		archivedEventIDs(t, path),
-	)
-
-	env.sweeper.ExportSweep(context.Background())
-
-	assert.Equal(
-		t, []string{sweepRowNew}, archivedEventIDs(t, path),
-		"the sweep should prune rows older than the expiry "+
-			"from an idle archive and keep the rest",
-	)
-}
-
-// TestArchiveSweep_LeavesArchiveClosed proves the sweep does
-// not hold the archive open afterwards, so an operator can
-// still move the file away for offline retention.
-func TestArchiveSweep_LeavesArchiveClosed(t *testing.T) {
-	t.Parallel()
-
-	env := setupSweeperTest(t)
-
-	webhookID := env.seedDatabaseTarget(t, `{"expiry":"1h"}`)
-	env.seedArchiveRows(
-		t, webhookID, time.Now().Add(-48*time.Hour),
-	)
-
-	env.sweeper.ExportSweep(context.Background())
-
-	assert.False(
-		t, env.eng.ExportArchiveHandleOpen(webhookID),
-		"an idle archive must end the sweep closed",
-	)
-}
-
-// TestArchiveSweep_NeverExpiryUntouched proves the sweep is a
-// no-op for the default retention policy, so archives with no
-// expiry (or the literal "never") behave exactly as before.
-func TestArchiveSweep_NeverExpiryUntouched(t *testing.T) {
-	t.Parallel()
-
-	for _, configJSON := range []string{
-		`{"expiry":"never"}`,
-		`{"expiry":""}`,
-		"",
-	} {
-		env := setupSweeperTest(t)
-
-		webhookID := env.seedDatabaseTarget(t, configJSON)
-		path := env.seedArchiveRows(
-			t, webhookID,
-			time.Now().Add(-10000*time.Hour),
-		)
-
-		env.sweeper.ExportSweep(context.Background())
-
-		assert.Equal(
-			t, []string{sweepRowOld}, archivedEventIDs(t, path),
-			"config %q must keep rows forever", configJSON,
-		)
-	}
-}
-
-// TestArchiveSweep_DoesNotCreateArchiveFile proves the sweep
-// never conjures an archive: a webhook with a database target
-// that has never received an event must still have no archive
-// file (nor SQLite sidecar) after a sweep.
-func TestArchiveSweep_DoesNotCreateArchiveFile(t *testing.T) {
-	t.Parallel()
-
-	env := setupSweeperTest(t)
-
-	webhookID := env.seedDatabaseTarget(t, `{"expiry":"1h"}`)
-	path := env.archivePath(webhookID)
-
-	require.NoFileExists(t, path)
-
-	env.sweeper.ExportSweep(context.Background())
-
-	for _, suffix := range []string{"", "-wal", "-shm"} {
-		assert.NoFileExists(
-			t, path+suffix,
-			"the sweep must not create an archive file",
-		)
-	}
-}
-
-// TestArchiveSweep_DoesNotCreateAfterWriterExists covers the
-// same guarantee once a writer is cached in the registry but
-// the file itself is still absent (for instance because the
-// operator moved the archive away).
-func TestArchiveSweep_DoesNotCreateAfterWriterExists(
-	t *testing.T,
-) {
-	t.Parallel()
-
-	env := setupSweeperTest(t)
-
-	webhookID := env.seedDatabaseTarget(t, `{"expiry":"1h"}`)
-
-	path, err := env.eng.ExportEnsureArchiveWriter(webhookID)
-	require.NoError(t, err)
-	require.NoFileExists(t, path)
-
-	env.sweeper.ExportSweep(context.Background())
-
-	assert.NoFileExists(t, path)
-}
-
-// TestArchiveSweep_SkipsDeletedWebhookTargets proves that the
-// sweep ignores targets soft-deleted along with their webhook,
-// so a deleted webhook's archive is never reopened.
-func TestArchiveSweep_SkipsDeletedWebhookTargets(t *testing.T) {
-	t.Parallel()
-
-	env := setupSweeperTest(t)
-
-	webhookID := env.seedDatabaseTarget(t, `{"expiry":"1h"}`)
-	path := env.seedArchiveRows(
-		t, webhookID, time.Now().Add(-48*time.Hour),
-	)
-
-	require.NoError(
-		t,
-		env.mainDB.DB().
-			Where("webhook_id = ?", webhookID).
-			Delete(&database.Target{}).Error,
-	)
-
-	env.sweeper.ExportSweep(context.Background())
-
-	assert.Equal(
-		t, []string{sweepRowOld}, archivedEventIDs(t, path),
-		"a deleted target's archive must be left alone",
-	)
-}
-
-// TestArchiveSweep_ConcurrentWrites proves the sweep serialises
-// against writes through the per-webhook writer mutex. Run
-// under -race, an unsynchronised sweep would be caught here.
-func TestArchiveSweep_ConcurrentWrites(t *testing.T) {
-	t.Parallel()
-
-	env := setupSweeperTest(t)
-
-	webhookID := env.seedDatabaseTarget(t, `{"expiry":"1h"}`)
-
-	webhookDB := testWebhookDB(t)
-
-	// The deliveries are seeded up front, on the test's own
-	// goroutine: the seed helpers assert, and testify assertions
-	// must not run off the test goroutine.
-	deliveries := make(
-		[]*database.Delivery, 0, sweepConcurrentWrites,
-	)
-
-	for range sweepConcurrentWrites {
-		event := seedEvent(t, webhookDB, `{"n":1}`)
-		event.WebhookID = webhookID
-
-		deliveries = append(
-			deliveries,
-			seedDatabaseTargetDelivery(
-				t, webhookDB, event, `{"expiry":"1h"}`,
-			),
-		)
-	}
-
-	var wg sync.WaitGroup
-
-	wg.Add(2)
-
-	go func() {
-		defer wg.Done()
-
-		for _, d := range deliveries {
-			env.eng.ExportDeliverDatabase(webhookDB, d)
-		}
-	}()
-
-	go func() {
-		defer wg.Done()
-
-		for range sweepConcurrentWrites {
-			env.sweeper.ExportSweep(context.Background())
-		}
-	}()
-
-	wg.Wait()
-
-	assert.FileExists(t, env.archivePath(webhookID))
-}
-
-// TestArchiveSweeper_StopsCleanly proves the background loop
-// exits on OnStop rather than leaking a goroutine.
-func TestArchiveSweeper_StopsCleanly(t *testing.T) {
-	t.Parallel()
-
-	env := setupSweeperTest(t)
-
-	webhookID := env.seedDatabaseTarget(t, `{"expiry":"1h"}`)
-	env.seedArchiveRows(
-		t, webhookID, time.Now().Add(-48*time.Hour),
-	)
-
-	env.sweeper.ExportSetInterval(time.Millisecond)
-	env.sweeper.ExportStart(context.Background())
-
-	// stop blocks on the loop's WaitGroup, so returning at all
-	// proves the loop observed the cancellation and exited.
-	env.sweeper.ExportStop()
-}

internal/delivery/engine.go

@@ -94,23 +94,6 @@ type Notifier interface {
 	Notify(tasks []Task)
 }
 
-// WebhookEvictor releases the delivery engine's per-webhook
-// state for a webhook that no longer needs it — currently the
-// cached archive writer of the database target, whose open
-// file handle would otherwise outlive the webhook.
-//
-// It is deliberately separate from Notifier and deliberately
-// one method wide: archiving lifecycle is not notification, and
-// a single-method interface keeps the handlers package free of
-// any dependency on the engine's internals while staying
-// trivially fakeable in tests.
-//
-// EvictWebhook never deletes an archive file. It is idempotent
-// and is a no-op for a webhook with no engine state.
-type WebhookEvictor interface {
-	EvictWebhook(webhookID string)
-}
-
 // EngineParams are the fx dependencies for the delivery
 // engine.
 type EngineParams struct {
@@ -144,10 +127,6 @@ type Engine struct {
 	// httpTarget is retained so tests can reach the HTTP
 	// target's shared client and circuit breakers.
 	httpTarget *httpTarget
-
-	// dbTarget is retained so the engine can reach the archive
-	// writer registry for webhook eviction and the idle sweep.
-	dbTarget *databaseTarget
 }
 
 // New creates and registers the delivery engine with the
@@ -170,18 +149,7 @@ func New(
 		Transport: NewSSRFSafeTransport(),
 	})
 
-	lc.Append(fx.Hook{
+	e.registerHooks(lc)
-		OnStart: func(ctx context.Context) error {
-			e.start(ctx)
-
-			return nil
-		},
-		OnStop: func(_ context.Context) error {
-			e.stop()
-
-			return nil
-		},
-	})
 
 	return e
 }
@@ -203,19 +171,6 @@ func (e *Engine) Notify(tasks []Task) {
 	}
 }
 
-// EvictWebhook implements WebhookEvictor. It releases the
-// engine's per-webhook archiving state: the database target's
-// cached archive writer is dropped from the registry and its
-// file handle closed. The archive file itself is left on disk
-// — it is long-term storage the operator owns.
-func (e *Engine) EvictWebhook(webhookID string) {
-	if e.dbTarget == nil {
-		return
-	}
-
-	e.dbTarget.evict(webhookID)
-}
-
 // ScheduleRetry schedules a task to be re-enqueued onto the
 // retry channel after delay. It implements the Scheduler
 // interface the targets use to own their durable retries.
@@ -244,8 +199,40 @@ func (e *Engine) ScheduleRetry(
 	})
 }
 
-func (e *Engine) start(ctx context.Context) {
+// registerHooks wires the engine's start and stop into the fx
-	ctx, cancel := context.WithCancel(ctx)
+// lifecycle. The start hook's context is deliberately ignored:
+// see start for why the worker pool must not inherit it.
+func (e *Engine) registerHooks(lc fx.Lifecycle) {
+	lc.Append(fx.Hook{
+		//nolint:contextcheck // Not inheriting the hook context
+		// is the point: see start.
+		OnStart: func(_ context.Context) error {
+			e.start()
+
+			return nil
+		},
+		OnStop: func(_ context.Context) error {
+			e.stop()
+
+			return nil
+		},
+	})
+}
+
+// start launches the worker pool, restart recovery, and the
+// periodic retry sweep.
+//
+// Their context is derived from context.Background(), NOT from
+// the fx OnStart hook context. The hook context carries fx's
+// start timeout (15s by default) and is cancelled once the start
+// phase completes, so goroutines derived from it stop a few
+// seconds into the process: every worker would return and the
+// engine would silently stop delivering webhooks entirely. A
+// long-lived goroutine must outlive the startup phase, so its
+// lifetime is bounded by OnStop instead: stop cancels this
+// context and waits on the WaitGroup.
+func (e *Engine) start() {
+	ctx, cancel := context.WithCancel(context.Background())
 	e.cancel = cancel
 
 	for range e.workers {

internal/delivery/engine_integration_test.go

@@ -476,7 +476,7 @@ func TestWorkerLifecycle_StartStop(t *testing.T) {
 	t.Parallel()
 
 	s := newISetup(t)
-	s.Engine.ExportStart(context.Background())
+	s.Engine.ExportStart()
 
 	event := iSeedEvent(
 		t, s.WebhookDB, s.WebhookID,
@@ -499,21 +499,17 @@ func TestWorkerLifecycle_StartStop(t *testing.T) {
 
 	s.Engine.Notify([]delivery.Task{task})
 
-	iWaitForStatus(
+	iWaitForDelivered(t, s.WebhookDB, d.ID)
-		t, s.WebhookDB, d.ID,
-		database.DeliveryStatusDelivered,
-	)
 
 	s.Engine.ExportStop()
 }
 
-// iWaitForStatus polls until the delivery reaches the
+// iWaitForDelivered polls until the delivery reaches the
-// expected status.
+// delivered status.
-func iWaitForStatus(
+func iWaitForDelivered(
 	t *testing.T,
 	db *gorm.DB,
 	deliveryID string,
-	expected database.DeliveryStatus,
 ) {
 	t.Helper()
 
@@ -527,7 +523,7 @@ func iWaitForStatus(
 			return false
 		}
 
-		return d.Status == expected
+		return d.Status == database.DeliveryStatusDelivered
 	}, 5*time.Second, 50*time.Millisecond)
 }
 
@@ -558,7 +554,7 @@ func TestWorkerLifecycle_ProcessesRetryChannel(
 		database.DeliveryStatusRetrying,
 	)
 
-	s.Engine.ExportStart(context.Background())
+	s.Engine.ExportStart()
 
 	bodyStr := event.Body
 	cfg := iHTTPConfig(ts.URL)
@@ -569,10 +565,7 @@ func TestWorkerLifecycle_ProcessesRetryChannel(
 
 	s.Engine.ExportRetryCh() <- task
 
-	iWaitForStatus(
+	iWaitForDelivered(t, s.WebhookDB, d.ID)
-		t, s.WebhookDB, d.ID,
-		database.DeliveryStatusDelivered,
-	)
 
 	s.Engine.ExportStop()
 }

internal/delivery/engine_lifecycle_test.go

@@ -0,0 +1,199 @@
+package delivery_test
+
+import (
+	"context"
+	"testing"
+	"time"
+
+	"github.com/google/uuid"
+	"github.com/stretchr/testify/require"
+	"go.uber.org/fx"
+	"sneak.berlin/go/webhooker/internal/database"
+	"sneak.berlin/go/webhooker/internal/delivery"
+)
+
+const (
+	// hookStopTimeout bounds how long a lifecycle test waits for
+	// the engine's OnStop hook to return before declaring the
+	// shutdown hung.
+	hookStopTimeout = 10 * time.Second
+
+	// hookSettleDelay is how long startEngineViaHook waits after
+	// OnStart before the caller may enqueue work. A worker pool
+	// wrongly rooted in the already-done hook context has nothing
+	// but ctx.Done() ready in its select, so it is deterministically
+	// gone by the end of this window. Without the wait, Notify would
+	// race the pool's very first select, in which a ready ctx.Done()
+	// and a ready deliveryCh are chosen between at random and a
+	// doomed pool still delivers.
+	hookSettleDelay = 250 * time.Millisecond
+)
+
+// recordingLifecycle is a minimal fx.Lifecycle that records the
+// hooks a component registers, so a test can invoke the real
+// OnStart/OnStop functions with a context of its choosing.
+type recordingLifecycle struct {
+	hooks []fx.Hook
+}
+
+func (l *recordingLifecycle) Append(h fx.Hook) {
+	l.hooks = append(l.hooks, h)
+}
+
+// startEngineViaHook drives the genuine fx hooks the application
+// registers for the engine, handing OnStart a context that is
+// already done, and returns only once a pool that inherited that
+// context would have exited. It returns the recorded lifecycle so
+// the caller can drive OnStop too.
+//
+// Callers must not seed pending or retrying deliveries before
+// calling this: restart recovery enqueues those during startup,
+// which would put work in the queue while the pool is still
+// racing its first select.
+func startEngineViaHook(
+	t *testing.T, eng *delivery.Engine,
+) *recordingLifecycle {
+	t.Helper()
+
+	lc := &recordingLifecycle{}
+	eng.ExportRegisterHooks(lc)
+	require.Len(t, lc.hooks, 1)
+
+	// fx hands OnStart a context carrying the application start
+	// timeout, and cancels it when the start phase ends. An
+	// already-cancelled context is that same defect taken to its
+	// limit, and unlike a plain context.Background() it actually
+	// distinguishes a correctly rooted loop from a broken one.
+	hookCtx, cancel := context.WithCancel(context.Background())
+	cancel()
+
+	require.NoError(t, lc.hooks[0].OnStart(hookCtx))
+
+	time.Sleep(hookSettleDelay)
+
+	return lc
+}
+
+// seedLogTask seeds a pending delivery for a log target and
+// returns its ID together with the task that drives it. The log
+// target needs no network, so a delivery completing proves only
+// that a worker picked the task up.
+func seedLogTask(
+	t *testing.T, s iSetup,
+) (string, delivery.Task) {
+	t.Helper()
+
+	event := iSeedEvent(
+		t, s.WebhookDB, s.WebhookID,
+		`{"lifecycle":"hook-context"}`,
+	)
+	targetID := uuid.New().String()
+
+	d := iSeedDelivery(
+		t, s.WebhookDB, event.ID, targetID,
+		database.DeliveryStatusPending,
+	)
+
+	bodyStr := event.Body
+	task := iTask(
+		d, event, s.WebhookID, targetID,
+		"hook-context-test", "", 0, 1, &bodyStr,
+	)
+	task.TargetType = database.TargetTypeLog
+
+	return d.ID, task
+}
+
+// TestEngine_WorkersOutliveStartHookContext is the regression
+// test for a delivery engine that stopped delivering roughly
+// fifteen seconds after boot. fx calls OnStart with a context
+// carrying the application's start timeout (15s by default) and
+// cancels it when the start phase ends, so a worker pool rooted
+// in it exits shortly after startup: the process keeps accepting
+// and persisting events while nothing at all forwards them.
+//
+// Driving OnStart with an already-cancelled context is that
+// defect taken to its limit. A pool that inherits the hook
+// context is gone before the task is even enqueued; a correctly
+// rooted pool keeps working for as long as the process lives.
+func TestEngine_WorkersOutliveStartHookContext(t *testing.T) {
+	t.Parallel()
+
+	s := newISetup(t)
+
+	lc := startEngineViaHook(t, s.Engine)
+	t.Cleanup(func() {
+		_ = lc.hooks[0].OnStop(context.Background())
+	})
+
+	// Seeded only after the pool has settled, so restart recovery
+	// cannot enqueue it during startup.
+	deliveryID, task := seedLogTask(t, s)
+
+	s.Engine.Notify([]delivery.Task{task})
+
+	iWaitForDelivered(t, s.WebhookDB, deliveryID)
+}
+
+// TestEngine_StopHookStopsWorkers proves the fix did not trade a
+// startup bug for a shutdown hang: now that the worker pool no
+// longer observes the start hook's cancellation, OnStop is the
+// only thing that can stop it, and it must both return promptly
+// and actually leave the pool drained.
+func TestEngine_StopHookStopsWorkers(t *testing.T) {
+	t.Parallel()
+
+	s := newISetup(t)
+
+	lc := startEngineViaHook(t, s.Engine)
+
+	// Let the pool prove it is running before stopping it, so a
+	// fast OnStop cannot pass by stopping something already dead.
+	firstID, firstTask := seedLogTask(t, s)
+	s.Engine.Notify([]delivery.Task{firstTask})
+	iWaitForDelivered(t, s.WebhookDB, firstID)
+
+	var stopErr error
+
+	stopped := make(chan struct{})
+
+	go func() {
+		defer close(stopped)
+
+		// stop blocks on the workers' WaitGroup, so returning at
+		// all proves every goroutine observed the cancellation.
+		stopErr = lc.hooks[0].OnStop(context.Background())
+	}()
+
+	select {
+	case <-stopped:
+	case <-time.After(hookStopTimeout):
+		t.Fatal(
+			"OnStop did not return: the delivery engine's " +
+				"WaitGroup is still waiting on a goroutine that " +
+				"never observed cancellation",
+		)
+	}
+
+	require.NoError(t, stopErr)
+
+	// With every worker gone, a freshly notified task must sit
+	// untouched in the queue rather than being delivered.
+	secondID, secondTask := seedLogTask(t, s)
+	s.Engine.Notify([]delivery.Task{secondTask})
+
+	time.Sleep(200 * time.Millisecond)
+
+	var after database.Delivery
+
+	require.NoError(
+		t,
+		s.WebhookDB.First(&after, "id = ?", secondID).Error,
+	)
+	require.Equal(
+		t,
+		database.DeliveryStatusPending,
+		after.Status,
+		"a stopped engine must not deliver anything",
+	)
+}

internal/delivery/export_test.go

@@ -7,6 +7,7 @@ import (
 	"net/http"
 	"time"
 
+	"go.uber.org/fx"
 	"gorm.io/gorm"
 	"sneak.berlin/go/webhooker/internal/database"
 )
@@ -189,8 +190,16 @@ func (e *Engine) ExportRecoverInFlight(
 }
 
 // ExportStart exposes start for testing.
-func (e *Engine) ExportStart(ctx context.Context) {
+func (e *Engine) ExportStart() {
-	e.start(ctx)
+	e.start()
+}
+
+// ExportRegisterHooks registers the engine's real fx lifecycle
+// hooks on a lifecycle supplied by a test, so a test can drive
+// the exact OnStart/OnStop functions the application runs and
+// hand OnStart the kind of context fx actually supplies.
+func (e *Engine) ExportRegisterHooks(lc fx.Lifecycle) {
+	e.registerHooks(lc)
 }
 
 // ExportStop exposes stop for testing.
@@ -328,90 +337,6 @@ func (e *ExportArchiveWriter) DB() *gorm.DB {
 	return e.w.db
 }
 
-// ExportHasArchiveWriter reports whether the database target
-// currently caches an archive writer for a webhook.
-func (e *Engine) ExportHasArchiveWriter(
-	webhookID string,
-) bool {
-	e.dbTarget.mu.Lock()
-	defer e.dbTarget.mu.Unlock()
-
-	_, ok := e.dbTarget.writers[webhookID]
-
-	return ok
-}
-
-// ExportArchiveHandleOpen reports whether the cached archive
-// writer for a webhook holds an open database handle. It
-// returns false when no writer is cached.
-func (e *Engine) ExportArchiveHandleOpen(
-	webhookID string,
-) bool {
-	e.dbTarget.mu.Lock()
-	w, ok := e.dbTarget.writers[webhookID]
-	e.dbTarget.mu.Unlock()
-
-	if !ok {
-		return false
-	}
-
-	w.mu.Lock()
-	defer w.mu.Unlock()
-
-	return w.db != nil
-}
-
-// ExportEnsureArchiveWriter creates (if needed) and returns the
-// archive file path of the cached writer for a webhook, so a
-// test can prime the registry the way a delivery would.
-func (e *Engine) ExportEnsureArchiveWriter(
-	webhookID string,
-) (string, error) {
-	w, err := e.dbTarget.writerFor(webhookID)
-	if err != nil {
-		return "", err
-	}
-
-	return w.path, nil
-}
-
-// NewTestArchiveSweeper builds an ArchiveSweeper backed by the
-// given main database and engine, without the fx lifecycle.
-// Intended for tests.
-func NewTestArchiveSweeper(
-	db *database.Database,
-	eng *Engine,
-	log *slog.Logger,
-) *ArchiveSweeper {
-	return &ArchiveSweeper{
-		db:       db,
-		eng:      eng,
-		log:      log,
-		interval: time.Hour,
-	}
-}
-
-// ExportSweep runs a single archive sweep synchronously for
-// tests.
-func (s *ArchiveSweeper) ExportSweep(ctx context.Context) {
-	s.sweep(ctx)
-}
-
-// ExportStart starts the sweeper's background loop for tests.
-func (s *ArchiveSweeper) ExportStart(ctx context.Context) {
-	s.start(ctx)
-}
-
-// ExportStop stops the sweeper's background loop for tests.
-func (s *ArchiveSweeper) ExportStop() {
-	s.stop()
-}
-
-// ExportSetInterval overrides the sweep interval for tests.
-func (s *ArchiveSweeper) ExportSetInterval(d time.Duration) {
-	s.interval = d
-}
-
 // ExportParseArchiveExpiry exposes parseArchiveExpiry.
 func ExportParseArchiveExpiry(
 	configJSON string,

internal/delivery/target.go

@@ -90,15 +90,12 @@ func (e *Engine) initTargets(client *http.Client) {
 		client:   client,
 	}
 
-	dbT := &databaseTarget{eng: e}
-
 	e.httpTarget = httpT
-	e.dbTarget = dbT
 
 	e.targets = map[database.TargetType]Target{
 		database.TargetTypeHTTP:     httpT,
 		database.TargetTypeSlack:    slackT,
-		database.TargetTypeDatabase: dbT,
+		database.TargetTypeDatabase: &databaseTarget{eng: e},
 		database.TargetTypeLog:      &logTarget{eng: e},
 	}
 }

internal/delivery/target_database.go

@@ -5,7 +5,6 @@ import (
 	"fmt"
 	"path/filepath"
 	"sync"
-	"time"
 
 	"gorm.io/gorm"
 	"sneak.berlin/go/webhooker/internal/database"
@@ -112,11 +111,15 @@ func (t *databaseTarget) archive(d *database.Delivery) error {
 func (t *databaseTarget) writerFor(
 	webhookID string,
 ) (*archiveWriter, error) {
-	path, err := t.archivePath(webhookID)
+	if t.eng.dbManager == nil {
-	if err != nil {
+		return nil, errArchiveNoDataDir
-		return nil, err
 	}
 
+	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()
 
@@ -132,86 +135,3 @@ func (t *databaseTarget) writerFor(
 
 	return w, nil
 }
-
-// archivePath returns the archive file path for a webhook: it
-// lives beside the per-webhook event database in the data
-// directory. It does not touch the filesystem.
-func (t *databaseTarget) archivePath(
-	webhookID string,
-) (string, error) {
-	if t.eng.dbManager == nil {
-		return "", errArchiveNoDataDir
-	}
-
-	dir := filepath.Dir(t.eng.dbManager.DBPath(webhookID))
-
-	return filepath.Join(
-		dir, fmt.Sprintf("archive-%s.db", webhookID),
-	), nil
-}
-
-// evict drops a webhook's archive writer from the registry and
-// closes its handle, so a deleted webhook does not leave a
-// writer (and an open archive handle within its debounce
-// window) alive for the process lifetime.
-//
-// The map entry is removed under the registry lock, which is
-// then released before the handle is closed under the writer's
-// own lock: that ordering keeps the registry available to other
-// webhooks while an in-flight write on this one drains, and
-// closing under the writer's lock means eviction can never race
-// a write.
-//
-// Eviction is idempotent and silent for a webhook with no
-// writer, which is the common case: a webhook with no database
-// target never creates one. It never deletes the archive file.
-func (t *databaseTarget) evict(webhookID string) {
-	t.mu.Lock()
-
-	w, ok := t.writers[webhookID]
-	if ok {
-		delete(t.writers, webhookID)
-	}
-
-	t.mu.Unlock()
-
-	if !ok {
-		return
-	}
-
-	w.evict()
-
-	t.eng.log.Info(
-		"evicted archive writer",
-		"webhook_id", webhookID,
-		"path", w.path,
-	)
-}
-
-// sweepWebhook prunes one webhook's archive of rows older than
-// expiry, without requiring a write. It returns nil (nothing to
-// do) when the archive file does not exist, so a sweep never
-// creates an archive for a webhook that has a database target
-// but has never received an event.
-func (t *databaseTarget) sweepWebhook(
-	webhookID string, expiry time.Duration,
-) error {
-	path, err := t.archivePath(webhookID)
-	if err != nil {
-		return err
-	}
-
-	// Check before taking a writer at all: a webhook whose
-	// archive has never been created gets no writer, no handle,
-	// and no file.
-	if !fileExists(path) {
-		return nil
-	}
-
-	w, err := t.writerFor(webhookID)
-	if err != nil {
-		return err
-	}
-
-	return w.sweepExpired(expiry)
-}

internal/delivery/target_database_archive.go

@@ -24,20 +24,6 @@ const archiveExpiryNever = "never"
 // offline archiving, but never more than once per this window.
 const archiveReopenDebounce = time.Second
 
-const (
-	// archiveModeCreate is the SQLite URI mode used by the write
-	// path: open the archive file, creating it if missing, so a
-	// first write (or a write after the operator moved the file
-	// away) recreates it.
-	archiveModeCreate = "rwc"
-
-	// archiveModeExisting is the SQLite URI mode used by the idle
-	// sweep: open read-write but never create. A sweep must never
-	// conjure an empty archive file for a webhook that has a
-	// database target but has never received an event.
-	archiveModeExisting = "rw"
-)
-
 var (
 	// errArchiveMissingWebhookID is returned when an event to
 	// archive has no webhook id to key its archive file on.
@@ -58,15 +44,6 @@ var (
 	errArchiveExpiryNotPositive = errors.New(
 		"expiry must be a positive duration or \"never\"",
 	)
-
-	// errArchiveWriterEvicted is returned when a writer that has
-	// been evicted (its webhook was deleted, or its last database
-	// target was removed) is used again. An evicted writer is no
-	// longer in the registry, so reopening its file would leak a
-	// handle nothing owns.
-	errArchiveWriterEvicted = errors.New(
-		"archive writer has been evicted",
-	)
 )
 
 // databaseTargetConfig is the optional per-target JSON config
@@ -184,12 +161,6 @@ type archiveWriter struct {
 	db         *gorm.DB
 	lastReopen time.Time
 	reopens    int
-
-	// evicted marks a writer that has been removed from the
-	// per-webhook registry. Its handle is closed and it must
-	// never open the file again: nothing holds it any more, so a
-	// reopen would leak the handle for the process lifetime.
-	evicted bool
 }
 
 // newArchiveWriter builds an archiveWriter for a file path with
@@ -214,12 +185,6 @@ func (w *archiveWriter) write(
 	w.mu.Lock()
 	defer w.mu.Unlock()
 
-	if w.evicted {
-		return fmt.Errorf(
-			"%w: %s", errArchiveWriterEvicted, w.path,
-		)
-	}
-
 	if w.db == nil || !fileExists(w.path) {
 		err := w.reopen(expiry)
 		if err != nil {
@@ -247,19 +212,7 @@ func (w *archiveWriter) write(
 // its schema, records the reopen time, and prunes expired rows
 // when expiry is positive.
 func (w *archiveWriter) open(expiry time.Duration) error {
-	return w.openMode(archiveModeCreate, expiry)
+	dbURL := fmt.Sprintf("file:%s?mode=rwc", w.path)
-}
-
-// openMode opens the archive file with the given SQLite URI
-// mode, migrates its schema, records the reopen time, and
-// prunes expired rows when expiry is positive. The write path
-// passes archiveModeCreate so a missing file is recreated; the
-// idle sweep passes archiveModeExisting so a missing file is an
-// error rather than a newly conjured empty archive.
-func (w *archiveWriter) openMode(
-	mode string, expiry time.Duration,
-) error {
-	dbURL := fmt.Sprintf("file:%s?mode=%s", w.path, mode)
 
 	sqlDB, err := sql.Open("sqlite", dbURL)
 	if err != nil {
@@ -322,63 +275,6 @@ func (w *archiveWriter) close() {
 	w.db = nil
 }
 
-// sweepExpired prunes an archive that may have gone idle, with
-// no write to trigger the usual on-reopen prune. It takes the
-// writer's own mutex for the whole operation, so a sweep is
-// ordered against concurrent writes rather than reaching around
-// them to the file.
-//
-// It never creates the archive file: a missing file is skipped,
-// and the reopen uses archiveModeExisting so SQLite itself
-// refuses to create one if the file disappears between the
-// check and the open.
-//
-// The archive is left CLOSED afterwards. An idle archive holding
-// no handle is what keeps the operator's move-the-file-away
-// workflow working; the next write reopens (and recreates) the
-// file as it always has.
-func (w *archiveWriter) sweepExpired(expiry time.Duration) error {
-	w.mu.Lock()
-	defer w.mu.Unlock()
-
-	if w.evicted {
-		return fmt.Errorf(
-			"%w: %s", errArchiveWriterEvicted, w.path,
-		)
-	}
-
-	if !fileExists(w.path) {
-		return nil
-	}
-
-	// Drop any live handle first so the prune runs against a
-	// freshly opened file, matching the write path's semantics.
-	w.close()
-
-	err := w.openMode(archiveModeExisting, expiry)
-	if err != nil {
-		return err
-	}
-
-	w.close()
-
-	return nil
-}
-
-// evict closes the writer's handle and marks it unusable. It is
-// called when the writer leaves the registry, either because the
-// webhook was deleted or because its last database target was
-// removed. The archive FILE is deliberately left on disk: it is
-// long-term storage an operator may still want.
-func (w *archiveWriter) evict() {
-	w.mu.Lock()
-	defer w.mu.Unlock()
-
-	w.evicted = true
-
-	w.close()
-}
-
 // 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

internal/delivery/target_database_evict_test.go

@@ -1,130 +0,0 @@
-package delivery_test
-
-import (
-	"fmt"
-	"net/http"
-	"path/filepath"
-	"testing"
-	"time"
-
-	"github.com/stretchr/testify/assert"
-	"github.com/stretchr/testify/require"
-	"sneak.berlin/go/webhooker/internal/database"
-	"sneak.berlin/go/webhooker/internal/delivery"
-)
-
-// evictTestEngine builds an engine backed by a temporary data
-// directory and returns it along with that directory.
-func evictTestEngine(t *testing.T) (*delivery.Engine, string) {
-	t.Helper()
-
-	dataDir := t.TempDir()
-
-	eng := delivery.NewTestEngineWithDB(
-		nil,
-		database.NewTestWebhookDBManager(dataDir),
-		archiveTestLogger(),
-		&http.Client{Timeout: 5 * time.Second},
-		1,
-	)
-
-	return eng, dataDir
-}
-
-// TestEvictWebhook_ClosesAndRemovesWriter proves that evicting
-// a webhook drops its archive writer from the registry and
-// closes the open archive handle, rather than leaving both
-// alive for the process lifetime.
-func TestEvictWebhook_ClosesAndRemovesWriter(t *testing.T) {
-	t.Parallel()
-
-	eng, dataDir := evictTestEngine(t)
-
-	webhookDB := testWebhookDB(t)
-	event := seedEvent(t, webhookDB, `{"archived":true}`)
-	d := seedDatabaseTargetDelivery(t, webhookDB, event, "")
-
-	eng.ExportDeliverDatabase(webhookDB, d)
-
-	webhookID := event.WebhookID
-
-	require.True(
-		t, eng.ExportHasArchiveWriter(webhookID),
-		"a delivery should have cached an archive writer",
-	)
-	require.True(
-		t, eng.ExportArchiveHandleOpen(webhookID),
-		"the writer should hold an open handle after a write",
-	)
-
-	eng.EvictWebhook(webhookID)
-
-	assert.False(
-		t, eng.ExportHasArchiveWriter(webhookID),
-		"eviction should remove the registry entry",
-	)
-	assert.False(
-		t, eng.ExportArchiveHandleOpen(webhookID),
-		"eviction should close the archive handle",
-	)
-
-	archivePath := filepath.Join(
-		dataDir, fmt.Sprintf("archive-%s.db", webhookID),
-	)
-	assert.FileExists(
-		t, archivePath,
-		"eviction must not delete the archive file",
-	)
-}
-
-// TestEvictWebhook_UnknownWebhookIsNoOp proves eviction is safe
-// for the common case of a webhook that never had a database
-// target, and that repeating it does not panic.
-func TestEvictWebhook_UnknownWebhookIsNoOp(t *testing.T) {
-	t.Parallel()
-
-	eng, _ := evictTestEngine(t)
-
-	assert.NotPanics(t, func() {
-		eng.EvictWebhook("no-such-webhook")
-		eng.EvictWebhook("no-such-webhook")
-	})
-
-	assert.False(
-		t, eng.ExportHasArchiveWriter("no-such-webhook"),
-		"eviction must not create a writer",
-	)
-}
-
-// TestEvictWebhook_EvictedWriterDoesNotReopen proves an evicted
-// writer refuses further writes instead of silently reopening
-// the archive file: nothing holds it any more, so a reopened
-// handle would leak.
-func TestEvictWebhook_EvictedWriterDoesNotReopen(t *testing.T) {
-	t.Parallel()
-
-	eng, _ := evictTestEngine(t)
-
-	webhookDB := testWebhookDB(t)
-	event := seedEvent(t, webhookDB, `{"archived":true}`)
-	d := seedDatabaseTargetDelivery(t, webhookDB, event, "")
-
-	eng.ExportDeliverDatabase(webhookDB, d)
-	require.True(
-		t, eng.ExportHasArchiveWriter(event.WebhookID),
-	)
-
-	eng.EvictWebhook(event.WebhookID)
-
-	// A fresh delivery for the same webhook gets a brand new
-	// writer from the registry, so archiving keeps working.
-	second := seedDatabaseTargetDelivery(
-		t, webhookDB, event, "",
-	)
-	eng.ExportDeliverDatabase(webhookDB, second)
-
-	assert.True(
-		t, eng.ExportHasArchiveWriter(event.WebhookID),
-		"a later delivery should recreate the writer",
-	)
-}

internal/handlers/handlers.go

@@ -51,7 +51,6 @@ type HandlersParams struct {
 	Healthcheck  *healthcheck.Healthcheck
 	Session      *session.Session
 	Notifier     delivery.Notifier
-	Evictor      delivery.WebhookEvictor
 }
 
 // Handlers provides HTTP handler methods for all application
@@ -64,7 +63,6 @@ type Handlers struct {
 	dbMgr     *database.WebhookDBManager
 	session   *session.Session
 	notifier  delivery.Notifier
-	evictor   delivery.WebhookEvictor
 	templates map[string]*template.Template
 }
 
@@ -99,7 +97,6 @@ func New(
 	s.dbMgr = params.WebhookDBMgr
 	s.session = params.Session
 	s.notifier = params.Notifier
-	s.evictor = params.Evictor
 
 	// Parse all page templates once at startup
 	s.templates = map[string]*template.Template{

internal/handlers/handlers_test.go

@@ -4,7 +4,6 @@ import (
 	"context"
 	"net/http"
 	"net/http/httptest"
-	"sync"
 	"testing"
 
 	"github.com/stretchr/testify/assert"
@@ -25,32 +24,6 @@ type noopNotifier struct{}
 
 func (n *noopNotifier) Notify([]delivery.Task) {}
 
-// recordingEvictor is a delivery.WebhookEvictor that records
-// the webhook ids it was asked to evict, so a test can prove
-// that a deletion path reached the delivery engine.
-type recordingEvictor struct {
-	mu      sync.Mutex
-	evicted []string
-}
-
-func (r *recordingEvictor) EvictWebhook(webhookID string) {
-	r.mu.Lock()
-	defer r.mu.Unlock()
-
-	r.evicted = append(r.evicted, webhookID)
-}
-
-// Evicted returns a copy of the recorded webhook ids.
-func (r *recordingEvictor) Evicted() []string {
-	r.mu.Lock()
-	defer r.mu.Unlock()
-
-	out := make([]string, len(r.evicted))
-	copy(out, r.evicted)
-
-	return out
-}
-
 func newTestApp(
 	t *testing.T,
 	targets ...any,
@@ -74,12 +47,6 @@ func newTestApp(
 			func() delivery.Notifier {
 				return &noopNotifier{}
 			},
-			func() *recordingEvictor {
-				return &recordingEvictor{}
-			},
-			func(r *recordingEvictor) delivery.WebhookEvictor {
-				return r
-			},
 			handlers.New,
 		),
 		fx.Populate(targets...),

internal/handlers/source_delete_test.go

@@ -1,305 +0,0 @@
-package handlers_test
-
-import (
-	"context"
-	"net/http"
-	"net/http/httptest"
-	"os"
-	"path/filepath"
-	"testing"
-
-	"github.com/go-chi/chi"
-	"github.com/stretchr/testify/assert"
-	"github.com/stretchr/testify/require"
-	"gorm.io/gorm/clause"
-	"sneak.berlin/go/webhooker/internal/database"
-	"sneak.berlin/go/webhooker/internal/handlers"
-	"sneak.berlin/go/webhooker/internal/session"
-)
-
-const (
-	deleteTestUserID   = "test-user-id"
-	deleteTestUsername = "testuser"
-
-	// paramSourceID and paramTargetID are the chi URL parameter
-	// names the deletion handlers read.
-	paramSourceID = "sourceID"
-	paramTargetID = "targetID"
-)
-
-// seedWebhook inserts a webhook owned by the test user and
-// returns it.
-func seedWebhook(
-	t *testing.T,
-	db *database.Database,
-) *database.Webhook {
-	t.Helper()
-
-	wh := &database.Webhook{
-		UserID: deleteTestUserID,
-		Name:   "delete-me",
-	}
-
-	require.NoError(
-		t,
-		db.DB().Omit(clause.Associations).Create(wh).Error,
-	)
-
-	return wh
-}
-
-// seedTarget inserts a target of the given type for a webhook
-// and returns it.
-func seedTarget(
-	t *testing.T,
-	db *database.Database,
-	webhookID string,
-	targetType database.TargetType,
-) *database.Target {
-	t.Helper()
-
-	tgt := &database.Target{
-		WebhookID: webhookID,
-		Name:      "t-" + string(targetType),
-		Type:      targetType,
-		Active:    true,
-	}
-
-	require.NoError(
-		t,
-		db.DB().Omit(clause.Associations).Create(tgt).Error,
-	)
-
-	return tgt
-}
-
-// archivePathFor returns the archive database path the
-// delivery engine would use for a webhook: beside the webhook's
-// event database in the data directory.
-func archivePathFor(
-	t *testing.T,
-	mgr *database.WebhookDBManager,
-	webhookID string,
-) string {
-	t.Helper()
-
-	return filepath.Join(
-		filepath.Dir(mgr.DBPath(webhookID)),
-		"archive-"+webhookID+".db",
-	)
-}
-
-// writeArchivePlaceholder creates a stand-in archive file so a
-// test can assert the file survives webhook deletion.
-func writeArchivePlaceholder(path string) error {
-	return os.WriteFile(path, []byte("archive"), 0o600)
-}
-
-// postRequest builds an authenticated POST request carrying the
-// given chi URL parameters.
-func postRequest(
-	path string,
-	cookies []*http.Cookie,
-	params map[string]string,
-) *http.Request {
-	req := httptest.NewRequestWithContext(
-		context.Background(), http.MethodPost, path, nil,
-	)
-
-	for _, c := range cookies {
-		req.AddCookie(c)
-	}
-
-	rctx := chi.NewRouteContext()
-	for k, v := range params {
-		rctx.URLParams.Add(k, v)
-	}
-
-	return req.WithContext(
-		context.WithValue(req.Context(), chi.RouteCtxKey, rctx),
-	)
-}
-
-// TestHandleSourceDelete_EvictsArchiveWriter proves that
-// deleting a webhook reaches the delivery engine and releases
-// the webhook's archive writer, exercised through the real
-// deletion handler rather than by calling the evictor directly.
-func TestHandleSourceDelete_EvictsArchiveWriter(t *testing.T) {
-	t.Parallel()
-
-	var (
-		h    *handlers.Handlers
-		sess *session.Session
-		db   *database.Database
-		ev   *recordingEvictor
-	)
-
-	app := newTestApp(t, &h, &sess, &db, &ev)
-	app.RequireStart()
-
-	t.Cleanup(app.RequireStop)
-
-	wh := seedWebhook(t, db)
-	seedTarget(t, db, wh.ID, database.TargetTypeDatabase)
-
-	cookies := authenticatedCookies(
-		t, sess, deleteTestUserID, deleteTestUsername,
-	)
-
-	req := postRequest(
-		"/source/"+wh.ID+"/delete",
-		cookies,
-		map[string]string{paramSourceID: wh.ID},
-	)
-	w := httptest.NewRecorder()
-
-	h.HandleSourceDelete().ServeHTTP(w, req)
-
-	require.Equal(t, http.StatusSeeOther, w.Code)
-	assert.Equal(
-		t, []string{wh.ID}, ev.Evicted(),
-		"deleting a webhook should evict its archive writer",
-	)
-}
-
-// TestHandleSourceDelete_KeepsArchiveFile proves that deleting
-// a webhook does not remove its archive database file: the
-// archive is long-term storage the operator owns.
-func TestHandleSourceDelete_KeepsArchiveFile(t *testing.T) {
-	t.Parallel()
-
-	var (
-		h    *handlers.Handlers
-		sess *session.Session
-		db   *database.Database
-		mgr  *database.WebhookDBManager
-	)
-
-	app := newTestApp(t, &h, &sess, &db, &mgr)
-	app.RequireStart()
-
-	t.Cleanup(app.RequireStop)
-
-	wh := seedWebhook(t, db)
-
-	// Place an archive file where the delivery engine would.
-	archivePath := archivePathFor(t, mgr, wh.ID)
-	require.NoError(
-		t,
-		writeArchivePlaceholder(archivePath),
-	)
-
-	cookies := authenticatedCookies(
-		t, sess, deleteTestUserID, deleteTestUsername,
-	)
-
-	req := postRequest(
-		"/source/"+wh.ID+"/delete",
-		cookies,
-		map[string]string{paramSourceID: wh.ID},
-	)
-	w := httptest.NewRecorder()
-
-	h.HandleSourceDelete().ServeHTTP(w, req)
-
-	require.Equal(t, http.StatusSeeOther, w.Code)
-	assert.FileExists(
-		t, archivePath,
-		"webhook deletion must not destroy the archive file",
-	)
-}
-
-// TestHandleTargetDelete_EvictsWhenLastDatabaseTargetGone
-// proves that removing the last database target releases the
-// archive writer.
-func TestHandleTargetDelete_EvictsWhenLastDatabaseTargetGone(
-	t *testing.T,
-) {
-	t.Parallel()
-
-	var (
-		h    *handlers.Handlers
-		sess *session.Session
-		db   *database.Database
-		ev   *recordingEvictor
-	)
-
-	app := newTestApp(t, &h, &sess, &db, &ev)
-	app.RequireStart()
-
-	t.Cleanup(app.RequireStop)
-
-	wh := seedWebhook(t, db)
-	tgt := seedTarget(
-		t, db, wh.ID, database.TargetTypeDatabase,
-	)
-
-	cookies := authenticatedCookies(
-		t, sess, deleteTestUserID, deleteTestUsername,
-	)
-
-	req := postRequest(
-		"/source/"+wh.ID+"/targets/"+tgt.ID+"/delete",
-		cookies,
-		map[string]string{
-			paramSourceID: wh.ID,
-			paramTargetID: tgt.ID,
-		},
-	)
-	w := httptest.NewRecorder()
-
-	h.HandleTargetDelete().ServeHTTP(w, req)
-
-	require.Equal(t, http.StatusSeeOther, w.Code)
-	assert.Equal(
-		t, []string{wh.ID}, ev.Evicted(),
-		"removing the last database target should evict",
-	)
-}
-
-// TestHandleTargetDelete_KeepsWriterWhileDatabaseTargetRemains
-// proves that deleting an unrelated target, or one of several
-// database targets, leaves a still-needed archive writer alone.
-func TestHandleTargetDelete_KeepsWriterWhileDatabaseTargetRemains(
-	t *testing.T,
-) {
-	t.Parallel()
-
-	var (
-		h    *handlers.Handlers
-		sess *session.Session
-		db   *database.Database
-		ev   *recordingEvictor
-	)
-
-	app := newTestApp(t, &h, &sess, &db, &ev)
-	app.RequireStart()
-
-	t.Cleanup(app.RequireStop)
-
-	wh := seedWebhook(t, db)
-	seedTarget(t, db, wh.ID, database.TargetTypeDatabase)
-	other := seedTarget(t, db, wh.ID, database.TargetTypeLog)
-
-	cookies := authenticatedCookies(
-		t, sess, deleteTestUserID, deleteTestUsername,
-	)
-
-	req := postRequest(
-		"/source/"+wh.ID+"/targets/"+other.ID+"/delete",
-		cookies,
-		map[string]string{
-			paramSourceID: wh.ID,
-			paramTargetID: other.ID,
-		},
-	)
-	w := httptest.NewRecorder()
-
-	h.HandleTargetDelete().ServeHTTP(w, req)
-
-	require.Equal(t, http.StatusSeeOther, w.Code)
-	assert.Empty(
-		t, ev.Evicted(),
-		"a surviving database target must keep its writer",
-	)
-}

internal/handlers/source_management.go

@@ -533,13 +533,6 @@ func (h *Handlers) deleteWebhookResources(
 		return
 	}
 
-	// Release the delivery engine's per-webhook archiving state
-	// so a deleted webhook's archive writer (and any handle open
-	// within its debounce window) does not linger for the
-	// process lifetime. The archive file itself is deliberately
-	// left on disk; see evictArchiveWriter.
-	h.evictArchiveWriter(webhook.ID)
-
 	err = h.dbMgr.DeleteDB(webhook.ID)
 	if err != nil {
 		h.log.Error(
@@ -558,64 +551,6 @@ func (h *Handlers) deleteWebhookResources(
 	http.Redirect(w, r, "/sources", http.StatusSeeOther)
 }
 
-// evictArchiveWriter asks the delivery engine to drop its
-// cached archive writer for a webhook, closing the archive file
-// handle.
-//
-// The archive database file is NOT deleted. Unlike the event
-// database — which is per-webhook working storage and is
-// hard-deleted with the webhook — an archive is explicitly
-// long-term storage that an operator may want to keep or move
-// away for offline retention. Destroying it as a side effect of
-// deleting a webhook would be a surprising and unrecoverable
-// data loss, so the file is left for the operator to handle.
-func (h *Handlers) evictArchiveWriter(webhookID string) {
-	if h.evictor == nil {
-		return
-	}
-
-	h.evictor.EvictWebhook(webhookID)
-}
-
-// evictArchiveWriterIfUnused releases a webhook's archive
-// writer once the webhook has no database target left to feed
-// it.
-//
-// It is called after any child resource of a webhook is
-// deleted, and is correct without knowing which kind was: it
-// evicts only when no database target remains, so deleting one
-// of several database targets — or deleting an unrelated
-// target type — leaves a still-needed writer alone. When no
-// database target ever existed there is no writer and eviction
-// is a no-op. Soft-deleted targets are excluded by GORM's
-// default scope, so the row just deleted is not counted.
-func (h *Handlers) evictArchiveWriterIfUnused(webhookID string) {
-	var remaining int64
-
-	err := h.db.DB().
-		Model(&database.Target{}).
-		Where(
-			"webhook_id = ? AND type = ?",
-			webhookID, database.TargetTypeDatabase,
-		).
-		Count(&remaining).Error
-	if err != nil {
-		h.log.Error(
-			"failed to count remaining database targets",
-			"webhook_id", webhookID,
-			"error", err,
-		)
-
-		return
-	}
-
-	if remaining > 0 {
-		return
-	}
-
-	h.evictArchiveWriter(webhookID)
-}
-
 // HandleSourceLogs shows the request/response logs for a
 // webhook.
 func (h *Handlers) HandleSourceLogs() http.HandlerFunc {
@@ -1089,31 +1024,23 @@ func (h *Handlers) HandleEntrypointDelete() http.HandlerFunc {
 	return h.deleteChildResource(
 		"entrypointID", &database.Entrypoint{},
 		"failed to delete entrypoint",
-		nil,
 	)
 }
 
-// HandleTargetDelete handles deleting a target. Deleting the
+// HandleTargetDelete handles deleting a target.
-// last database target of a webhook leaves its archive writer
-// with nothing to write, so the writer is evicted and its
-// handle closed; the archive file is left on disk.
 func (h *Handlers) HandleTargetDelete() http.HandlerFunc {
 	return h.deleteChildResource(
 		"targetID", &database.Target{},
 		"failed to delete target",
-		h.evictArchiveWriterIfUnused,
 	)
 }
 
 // deleteChildResource returns a handler that deletes a child
-// resource (entrypoint or target) belonging to a webhook. The
+// resource (entrypoint or target) belonging to a webhook.
-// optional afterDelete hook runs with the webhook's id once the
-// delete has succeeded, before the redirect.
 func (h *Handlers) deleteChildResource(
 	idParam string,
 	model any,
 	errMsg string,
-	afterDelete func(webhookID string),
 ) http.HandlerFunc {
 	return func(w http.ResponseWriter, r *http.Request) {
 		userID, ok := h.getUserID(r)
@@ -1153,10 +1080,6 @@ func (h *Handlers) deleteChildResource(
 			return
 		}
 
-		if afterDelete != nil {
-			afterDelete(webhook.ID)
-		}
-
 		http.Redirect(
 			w, r,
 			"/source/"+webhook.ID,