feat: introduce cluster agent

pkg/http/handlers.go

@@ -6,6 +6,7 @@ import (
 	"log"
 	"net/http"
 
+	"github.com/0x1d/rcond/pkg/cluster"
 	network "github.com/0x1d/rcond/pkg/network"
 	"github.com/0x1d/rcond/pkg/system"
 	"github.com/0x1d/rcond/pkg/user"
@@ -287,3 +288,24 @@ func HandleShutdown(w http.ResponseWriter, r *http.Request) {
 	w.Header().Set("Content-Type", "application/json")
 	json.NewEncoder(w).Encode(map[string]string{"status": "success"})
 }
+
+func ClusterAgentWrapper(agent *cluster.Agent) func(http.ResponseWriter, *http.Request) {
+	return func(w http.ResponseWriter, r *http.Request) {
+		HandleClusterMembers(w, r, agent)
+	}
+}
+
+func HandleClusterMembers(w http.ResponseWriter, r *http.Request, agent *cluster.Agent) {
+	if agent == nil {
+		writeError(w, "cluster agent is not initialized", http.StatusInternalServerError)
+		return
+	}
+	members, err := agent.Members()
+	if err != nil {
+		writeError(w, err.Error(), http.StatusInternalServerError)
+		return
+	}
+
+	w.Header().Set("Content-Type", "application/json")
+	json.NewEncoder(w).Encode(members)
+}

pkg/http/server.go

@@ -6,14 +6,16 @@ import (
 	"net/http"
 	"time"
 
+	"github.com/0x1d/rcond/pkg/cluster"
 	"github.com/0x1d/rcond/pkg/config"
 	"github.com/gorilla/mux"
 )
 
 type Server struct {
-	router   *mux.Router
-	srv      *http.Server
-	apiToken string
+	router       *mux.Router
+	srv          *http.Server
+	apiToken     string
+	clusterAgent *cluster.Agent
 }
 
 func NewServer(cfg *config.Config) *Server {
@@ -37,6 +39,11 @@ func NewServer(cfg *config.Config) *Server {
 	}
 }
 
+func (s *Server) WithClusterAgent(agent *cluster.Agent) *Server {
+	s.clusterAgent = agent
+	return s
+}
+
 func (s *Server) Start() error {
 	return s.srv.ListenAndServe()
 }
@@ -69,6 +76,7 @@ func (s *Server) RegisterRoutes() {
 	s.router.HandleFunc("/users/{user}/keys/{fingerprint}", s.verifyToken(HandleRemoveAuthorizedKey)).Methods(http.MethodDelete)
 	s.router.HandleFunc("/system/restart", s.verifyToken(HandleReboot)).Methods(http.MethodPost)
 	s.router.HandleFunc("/system/shutdown", s.verifyToken(HandleShutdown)).Methods(http.MethodPost)
+	s.router.HandleFunc("/cluster/members", s.verifyToken(ClusterAgentWrapper(s.clusterAgent))).Methods(http.MethodGet)
 }
 
 func (s *Server) healthHandler(w http.ResponseWriter, r *http.Request) {