outbox for gateways

api/gateway/common/outbox/reliable_runtime.go

@@ -0,0 +1,72 @@
+package outbox
+
+import (
+	"context"
+	"sync"
+
+	"github.com/tech/sendico/pkg/merrors"
+	pmessaging "github.com/tech/sendico/pkg/messaging"
+	me "github.com/tech/sendico/pkg/messaging/envelope"
+	pmessagingreliable "github.com/tech/sendico/pkg/messaging/reliable"
+	"github.com/tech/sendico/pkg/mlogger"
+	cfgmodel "github.com/tech/sendico/pkg/model"
+	"go.uber.org/zap"
+)
+
+// ReliableRuntime owns a reliable producer lifecycle for gateway outbox dispatch.
+type ReliableRuntime struct {
+	once     sync.Once
+	cancel   context.CancelFunc
+	producer *pmessagingreliable.ReliableProducer
+	settings pmessagingreliable.Settings
+	initErr  error
+}
+
+func (r *ReliableRuntime) Start(logger mlogger.Logger, direct pmessaging.Producer, store Store, messagingSettings cfgmodel.SettingsT, opts ...pmessagingreliable.Option) error {
+	if r == nil {
+		return nil
+	}
+	if logger == nil {
+		logger = zap.NewNop()
+	}
+	logger = logger.Named("outbox_reliable")
+
+	r.once.Do(func() {
+		reliableProducer, settings, err := NewReliableProducer(logger, direct, store, messagingSettings, opts...)
+		if err != nil {
+			r.initErr = err
+			return
+		}
+		r.producer = reliableProducer
+		r.settings = settings
+		if r.producer == nil || direct == nil {
+			logger.Info("Outbox reliable publisher disabled", zap.Bool("enabled", settings.Enabled))
+			return
+		}
+		logger.Info("Outbox reliable publisher configured",
+			zap.Bool("enabled", settings.Enabled),
+			zap.Int("batch_size", settings.BatchSize),
+			zap.Int("poll_interval_seconds", settings.PollIntervalSeconds),
+			zap.Int("max_attempts", settings.MaxAttempts))
+
+		ctx, cancel := context.WithCancel(context.Background())
+		r.cancel = cancel
+		go r.producer.Run(ctx)
+	})
+
+	return r.initErr
+}
+
+func (r *ReliableRuntime) Send(ctx context.Context, envelope me.Envelope) error {
+	if r == nil || r.producer == nil {
+		return merrors.Internal("reliable outbox producer is not configured")
+	}
+	return r.producer.SendWithOutbox(ctx, envelope)
+}
+
+func (r *ReliableRuntime) Stop() {
+	if r == nil || r.cancel == nil {
+		return
+	}
+	r.cancel()
+}