// Retrieves stats on the leader. func (s *Server) GetLeaderStatsHandler(w http.ResponseWriter, req *http.Request) error { if s.peerServer.RaftServer().State() == raft.Leader { w.Write(s.peerServer.PeerStats()) return nil } leader := s.peerServer.RaftServer().Leader() if leader == "" { return etcdErr.NewError(300, "", s.Store().Index()) } hostname, _ := s.registry.ClientURL(leader) uhttp.Redirect(hostname, w, req) return nil }
func (e EtcdConnector) Dispatch(c raft.Command, w http.ResponseWriter, req *http.Request) error { ps := e.etcd.PeerServer registry := e.etcd.Registry if ps.RaftServer().State() == raft.Leader { result, err := ps.RaftServer().Do(c) if err != nil { return err } if result == nil { return etcdErr.NewError(300, "Empty result from raft", e.etcd.EtcdServer.Store().Index()) } if w != nil { w.WriteHeader(http.StatusOK) } return nil } else { leader := ps.RaftServer().Leader() // No leader available. if leader == "" { return etcdErr.NewError(300, "", e.etcd.EtcdServer.Store().Index()) } var url string switch c.(type) { case *JoinCommand, *RemoveCommand: url, _ = registry.PeerURL(leader) default: url, _ = registry.ClientURL(leader) } uhttp.Redirect(url, w, req) return nil } }
// Dispatch command to the current leader func (s *Server) Dispatch(c raft.Command, w http.ResponseWriter, req *http.Request) error { ps := s.peerServer if ps.raftServer.State() == raft.Leader { result, err := ps.raftServer.Do(c) if err != nil { return err } if result == nil { return etcdErr.NewError(300, "Empty result from raft", s.Store().Index()) } // response for raft related commands[join/remove] if b, ok := result.([]byte); ok { w.WriteHeader(http.StatusOK) w.Write(b) return nil } var b []byte if strings.HasPrefix(req.URL.Path, "/v1") { b, _ = json.Marshal(result.(*store.Event).Response(0)) w.WriteHeader(http.StatusOK) } else { e, _ := result.(*store.Event) b, _ = json.Marshal(e) w.Header().Set("Content-Type", "application/json") // etcd index should be the same as the event index // which is also the last modified index of the node w.Header().Add("X-Etcd-Index", fmt.Sprint(e.Index())) w.Header().Add("X-Raft-Index", fmt.Sprint(s.CommitIndex())) w.Header().Add("X-Raft-Term", fmt.Sprint(s.Term())) if e.IsCreated() { w.WriteHeader(http.StatusCreated) } else { w.WriteHeader(http.StatusOK) } } w.Write(b) return nil } else { leader := ps.raftServer.Leader() // No leader available. if leader == "" { return etcdErr.NewError(300, "", s.Store().Index()) } var url string switch c.(type) { case *JoinCommand, *RemoveCommand: url, _ = ps.registry.PeerURL(leader) default: url, _ = ps.registry.ClientURL(leader) } uhttp.Redirect(url, w, req) return nil } }