unified gateway interface

api/fx/oracle/internal/service/oracle/service.go

@@ -6,10 +6,12 @@ import (
 	"strings"
 	"time"
 
+	"github.com/tech/sendico/fx/oracle/internal/appversion"
 	"github.com/tech/sendico/fx/storage"
 	"github.com/tech/sendico/fx/storage/model"
 	"github.com/tech/sendico/pkg/api/routers"
 	"github.com/tech/sendico/pkg/api/routers/gsresponse"
+	"github.com/tech/sendico/pkg/discovery"
 	"github.com/tech/sendico/pkg/merrors"
 	pmessaging "github.com/tech/sendico/pkg/messaging"
 	"github.com/tech/sendico/pkg/mlogger"
@@ -36,19 +38,22 @@ var (
 )
 
 type Service struct {
-	logger   mlogger.Logger
-	storage  storage.Repository
-	producer pmessaging.Producer
+	logger    mlogger.Logger
+	storage   storage.Repository
+	producer  pmessaging.Producer
+	announcer *discovery.Announcer
 	oraclev1.UnimplementedOracleServer
 }
 
 func NewService(logger mlogger.Logger, repo storage.Repository, prod pmessaging.Producer) *Service {
 	initMetrics()
-	return &Service{
+	svc := &Service{
 		logger:   logger.Named("oracle"),
 		storage:  repo,
 		producer: prod,
 	}
+	svc.startDiscoveryAnnouncer()
+	return svc
 }
 
 func (s *Service) Register(router routers.GRPC) error {
@@ -57,6 +62,28 @@ func (s *Service) Register(router routers.GRPC) error {
 	})
 }
 
+func (s *Service) Shutdown() {
+	if s == nil {
+		return
+	}
+	if s.announcer != nil {
+		s.announcer.Stop()
+	}
+}
+
+func (s *Service) startDiscoveryAnnouncer() {
+	if s == nil || s.producer == nil {
+		return
+	}
+	announce := discovery.Announcement{
+		Service:    "FX_ORACLE",
+		Operations: []string{"fx.quote"},
+		Version:    appversion.Create().Short(),
+	}
+	s.announcer = discovery.NewAnnouncer(s.logger, s.producer, string(mservice.FXOracle), announce)
+	s.announcer.Start()
+}
+
 func (s *Service) GetQuote(ctx context.Context, req *oraclev1.GetQuoteRequest) (*oraclev1.GetQuoteResponse, error) {
 	start := time.Now()
 	responder := s.getQuoteResponder(ctx, req)