change election leader mechanism

internal/api/handlers.go

@@ -77,10 +77,10 @@ var startTime = time.Now()
 func (s *Server) handleHealth(w http.ResponseWriter, r *http.Request) {
 	response := HealthResponse{
 		Status:    "ok",
-		Role:      string(s.election.Role()),
+		Role:      string(s.roleProvider.Role()),
 		Redis:     s.storage.Health(),
 		Timestamp: time.Now().UTC().Format(time.RFC3339),
-		Leader:    s.election.LeaderInfo(),
+		Leader:    s.roleProvider.LeaderInfo(),
 	}
 
 	if !response.Redis {
@@ -100,13 +100,13 @@ func (s *Server) handleStatus(w http.ResponseWriter, r *http.Request) {
 
 	response := StatusResponse{
 		Status:      "ok",
-		Role:        string(s.election.Role()),
+		Role:        string(s.roleProvider.Role()),
 		Redis:       s.storage.Health(),
 		ServiceName: s.config.ServiceName,
 		Version:     s.config.ServiceVersion,
 		Uptime:      int64(time.Since(startTime).Seconds()),
 		FileCount:   fileCount,
-		Leader:      s.election.LeaderInfo(),
+		Leader:      s.roleProvider.LeaderInfo(),
 	}
 
 	if !response.Redis {
@@ -118,7 +118,7 @@ func (s *Server) handleStatus(w http.ResponseWriter, r *http.Request) {
 
 // handleLeader handles GET /leader
 func (s *Server) handleLeader(w http.ResponseWriter, r *http.Request) {
-	info := s.election.LeaderInfo()
+	info := s.roleProvider.LeaderInfo()
 	if info == nil {
 		writeError(w, http.StatusServiceUnavailable, "no leader available")
 		return
@@ -130,7 +130,7 @@ func (s *Server) handleLeader(w http.ResponseWriter, r *http.Request) {
 // handleRole handles GET /role
 func (s *Server) handleRole(w http.ResponseWriter, r *http.Request) {
 	writeJSON(w, http.StatusOK, map[string]string{
-		"role": string(s.election.Role()),
+		"role": string(s.roleProvider.Role()),
 	})
 }
 
@@ -147,7 +147,7 @@ type URLsResponse struct {
 // handleURLs handles GET /urls
 // Returns URLs for the current leader (or this instance if leader)
 func (s *Server) handleURLs(w http.ResponseWriter, r *http.Request) {
-	info := s.election.LeaderInfo()
+	info := s.roleProvider.LeaderInfo()
 	if info == nil {
 		writeError(w, http.StatusServiceUnavailable, "no leader available")
 		return
@@ -159,7 +159,7 @@ func (s *Server) handleURLs(w http.ResponseWriter, r *http.Request) {
 		ApiUrl:    info.ApiUrl,
 		RedisUrl:  info.RedisUrl,
 		WebdavUrl: info.WebdavUrl,
-		IsLeader:  s.election.IsLeader(),
+		IsLeader:  s.roleProvider.IsLeader(),
 	}
 
 	writeJSON(w, http.StatusOK, response)

internal/api/server.go

@@ -23,7 +23,7 @@ import (
 // Server is the HTTP API server for meta-core
 type Server struct {
 	config            *config.Config
-	election          *leader.Election
+	roleProvider      leader.RoleProvider
 	discovery         *discovery.Service
 	cleaner           *discovery.Cleaner
 	storage           *storage.Client
@@ -48,15 +48,15 @@ type Server struct {
 // NewServer creates a new API server
 func NewServer(
 	cfg *config.Config,
-	election *leader.Election,
+	roleProvider leader.RoleProvider,
 	disc *discovery.Service,
 	cleaner *discovery.Cleaner,
 	stor *storage.Client,
 ) *Server {
 	s := &Server{
-		config:    cfg,
-		election:  election,
-		discovery: disc,
+		config:       cfg,
+		roleProvider: roleProvider,
+		discovery:    disc,
 		cleaner:   cleaner,
 		storage:   stor,
 		router:    mux.NewRouter(),