[FIX] Storage implement the Surveyee interface

This is a proper fix for #323

internal/broker/service.go

@@ -156,7 +156,7 @@ func NewService(ctx context.Context, cfg *config.Config) (s *Service, err error)
 	s.surveyor = survey.New(s.pubsub, s.cluster)
 	s.presence = presence.New(s, s.pubsub, s.surveyor, s.subscriptions)
 	if s.cluster != nil {
-		s.surveyor.HandleFunc(s.presence, ssdstore, memstore)
+		s.surveyor.HandleFunc(s.storage)
 	}
 
 	// Create a new cipher from the licence provided

internal/provider/storage/storage.go

@@ -22,6 +22,7 @@ import (
 	"github.com/emitter-io/config"
 	"github.com/emitter-io/emitter/internal/message"
 	"github.com/emitter-io/emitter/internal/security"
+	"github.com/emitter-io/emitter/internal/service/survey"
 )
 
 var (
@@ -37,6 +38,7 @@ const (
 type Storage interface {
 	config.Provider
 	io.Closer
+	survey.Surveyee
 
 	// Store is used to store a message, the SSID provided must be a full SSID
 	// SSID, where first element should be a contract ID. The time resolution
@@ -137,3 +139,8 @@ func (s *Noop) Query(ssid message.Ssid, from, until time.Time, limit int) (messa
 func (s *Noop) Close() error {
 	return nil
 }
+
+// OnSurvey handles an incoming cluster lookup request.
+func (s *Noop) OnSurvey(surveyType string, payload []byte) ([]byte, bool) {
+	return []byte{}, true
+}