Files
webhooker/internal/delivery/target_database.go
sneak 38cfe76d49
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Implement the database archiving target (closes #43)
2026-08-07 22:59:24 +07:00

124 lines
3.0 KiB
Go

package delivery
import (
"context"
"fmt"
"path/filepath"
"sync"
"gorm.io/gorm"
"sneak.berlin/go/webhooker/internal/database"
)
// databaseTarget is a fire-and-forget 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 successful attempt. 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. Archiving errors are logged but do not fail the
// delivery: the event is already durably stored in the
// per-webhook event database, so the target stays
// fire-and-forget.
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, 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
}