improved logging in callbacks

api/edge/callbacks/internal/subscriptions/service.go

@@ -7,11 +7,14 @@ import (
 	"github.com/tech/sendico/edge/callbacks/internal/model"
 	"github.com/tech/sendico/edge/callbacks/internal/storage"
 	"github.com/tech/sendico/pkg/merrors"
+	"github.com/tech/sendico/pkg/mlogger"
 	"go.mongodb.org/mongo-driver/v2/bson"
+	"go.uber.org/zap"
 )
 
 type service struct {
-	repo storage.EndpointRepo
+	logger mlogger.Logger
+	repo   storage.EndpointRepo
 }
 
 // New creates endpoint resolver service.
@@ -19,8 +22,15 @@ func New(deps Dependencies) (Resolver, error) {
 	if deps.EndpointRepo == nil {
 		return nil, merrors.InvalidArgument("subscriptions: endpoint repo is required", "endpointRepo")
 	}
+	logger := deps.Logger
+	if logger == nil {
+		logger = zap.NewNop()
+	}
 
-	return &service{repo: deps.EndpointRepo}, nil
+	return &service{
+		logger: logger.Named("subscriptions"),
+		repo:   deps.EndpointRepo,
+	}, nil
 }
 
 func (s *service) Resolve(ctx context.Context, eventType string, organizationRef bson.ObjectID) ([]model.Endpoint, error) {
@@ -33,8 +43,19 @@ func (s *service) Resolve(ctx context.Context, eventType string, organizationRef
 
 	endpoints, err := s.repo.FindActive(ctx, eventType, organizationRef)
 	if err != nil {
+		s.logger.Warn("Failed to resolve active endpoints",
+			zap.String("event_type", eventType),
+			zap.String("organization_ref", organizationRef.Hex()),
+			zap.Error(err),
+		)
 		return nil, err
 	}
 
+	s.logger.Debug("Resolved active endpoints",
+		zap.String("event_type", eventType),
+		zap.String("organization_ref", organizationRef.Hex()),
+		zap.Int("endpoints", len(endpoints)),
+	)
+
 	return endpoints, nil
 }