feat: use postgres

notification/internal/adapters/postgres/notificationstore/dead_letters.go

@@ -0,0 +1,61 @@
+package notificationstore
+
+import (
+	"context"
+	"database/sql"
+	"time"
+
+	pgtable "galaxy/notification/internal/adapters/postgres/jet/notification/table"
+)
+
+// deadLetterRow stores the column values written to one dead_letters row.
+// Kept package-private because the public surface is the routestate
+// CompleteRouteDeadLetterInput shape; this struct is only the on-disk
+// projection.
+type deadLetterRow struct {
+	NotificationID        string
+	RouteID               string
+	Channel               string
+	RecipientRef          string
+	FinalAttemptCount     int
+	MaxAttempts           int
+	FailureClassification string
+	FailureMessage        string
+	RecoveryHint          string
+	CreatedAt             time.Time
+}
+
+// insertDeadLetter writes one dead-letter audit row inside an open
+// transaction. The composite PRIMARY KEY guards against duplicate inserts
+// for the same `(notification_id, route_id)` pair.
+func insertDeadLetter(ctx context.Context, tx *sql.Tx, row deadLetterRow) error {
+	stmt := pgtable.DeadLetters.INSERT(
+		pgtable.DeadLetters.NotificationID,
+		pgtable.DeadLetters.RouteID,
+		pgtable.DeadLetters.Channel,
+		pgtable.DeadLetters.RecipientRef,
+		pgtable.DeadLetters.FinalAttemptCount,
+		pgtable.DeadLetters.MaxAttempts,
+		pgtable.DeadLetters.FailureClassification,
+		pgtable.DeadLetters.FailureMessage,
+		pgtable.DeadLetters.RecoveryHint,
+		pgtable.DeadLetters.CreatedAt,
+	).VALUES(
+		row.NotificationID,
+		row.RouteID,
+		row.Channel,
+		row.RecipientRef,
+		row.FinalAttemptCount,
+		row.MaxAttempts,
+		row.FailureClassification,
+		row.FailureMessage,
+		row.RecoveryHint,
+		row.CreatedAt.UTC(),
+	)
+
+	query, args := stmt.Sql()
+	if _, err := tx.ExecContext(ctx, query, args...); err != nil {
+		return err
+	}
+	return nil
+}