discovery service

api/payments/orchestrator/internal/server/internal/discovery.go

@@ -0,0 +1,50 @@
+package serverimp
+
+import (
+	"github.com/tech/sendico/payments/orchestrator/internal/appversion"
+	"github.com/tech/sendico/pkg/discovery"
+	msg "github.com/tech/sendico/pkg/messaging"
+	msgproducer "github.com/tech/sendico/pkg/messaging/producer"
+	"github.com/tech/sendico/pkg/mservice"
+	"go.uber.org/zap"
+)
+
+func (i *Imp) initDiscovery(cfg *config) {
+	if cfg == nil || cfg.Messaging == nil || cfg.Messaging.Driver == "" {
+		return
+	}
+	logger := i.logger.Named("discovery")
+	broker, err := msg.CreateMessagingBroker(logger.Named("bus"), cfg.Messaging)
+	if err != nil {
+		i.logger.Warn("Failed to initialise discovery broker", zap.Error(err))
+		return
+	}
+	producer := msgproducer.NewProducer(logger.Named("producer"), broker)
+	registry := discovery.NewRegistry()
+	watcher, err := discovery.NewRegistryWatcher(i.logger, broker, registry)
+	if err != nil {
+		i.logger.Warn("Failed to initialise discovery registry watcher", zap.Error(err))
+	} else if err := watcher.Start(); err != nil {
+		i.logger.Warn("Failed to start discovery registry watcher", zap.Error(err))
+	} else {
+		i.discoveryWatcher = watcher
+		i.discoveryReg = registry
+		i.logger.Info("Discovery registry watcher started")
+	}
+	announce := discovery.Announcement{
+		Service:    "PAYMENTS_ORCHESTRATOR",
+		Operations: []string{"payment.quote", "payment.initiate"},
+		Version:    appversion.Create().Short(),
+	}
+	i.discoveryAnnouncer = discovery.NewAnnouncer(i.logger, producer, string(mservice.PaymentOrchestrator), announce)
+	i.discoveryAnnouncer.Start()
+}
+
+func (i *Imp) stopDiscovery() {
+	if i.discoveryAnnouncer != nil {
+		i.discoveryAnnouncer.Stop()
+	}
+	if i.discoveryWatcher != nil {
+		i.discoveryWatcher.Stop()
+	}
+}