package weed_server import ( "context" "fmt" "github.com/hashicorp/raft" "github.com/seaweedfs/seaweedfs/weed/cluster" "github.com/seaweedfs/seaweedfs/weed/pb/master_pb" ) func (ms *MasterServer) RaftListClusterServers(ctx context.Context, req *master_pb.RaftListClusterServersRequest) (*master_pb.RaftListClusterServersResponse, error) { resp := &master_pb.RaftListClusterServersResponse{} if ms.Topo.HashicorpRaft == nil { return resp, nil } servers := ms.Topo.HashicorpRaft.GetConfiguration().Configuration().Servers for _, server := range servers { resp.ClusterServers = append(resp.ClusterServers, &master_pb.RaftListClusterServersResponse_ClusterServers{ Id: string(server.ID), Address: string(server.Address), Suffrage: server.Suffrage.String(), }) } return resp, nil } func (ms *MasterServer) RaftAddServer(ctx context.Context, req *master_pb.RaftAddServerRequest) (*master_pb.RaftAddServerResponse, error) { resp := &master_pb.RaftAddServerResponse{} if ms.Topo.HashicorpRaft == nil { return resp, nil } if ms.Topo.HashicorpRaft.State() != raft.Leader { return nil, fmt.Errorf("raft add server %s failed: %s is no current leader", req.Id, ms.Topo.HashicorpRaft.String()) } var idxFuture raft.IndexFuture if req.Voter { idxFuture = ms.Topo.HashicorpRaft.AddVoter(raft.ServerID(req.Id), raft.ServerAddress(req.Address), 0, 0) } else { idxFuture = ms.Topo.HashicorpRaft.AddNonvoter(raft.ServerID(req.Id), raft.ServerAddress(req.Address), 0, 0) } if err := idxFuture.Error(); err != nil { return nil, err } return resp, nil } func (ms *MasterServer) RaftRemoveServer(ctx context.Context, req *master_pb.RaftRemoveServerRequest) (*master_pb.RaftRemoveServerResponse, error) { resp := &master_pb.RaftRemoveServerResponse{} if ms.Topo.HashicorpRaft == nil { return resp, nil } if ms.Topo.HashicorpRaft.State() != raft.Leader { return nil, fmt.Errorf("raft remove server %s failed: %s is no current leader", req.Id, ms.Topo.HashicorpRaft.String()) } if !req.Force { ms.clientChansLock.RLock() _, ok := ms.clientChans[fmt.Sprintf("%s@%s", cluster.MasterType, req.Id)] ms.clientChansLock.RUnlock() if ok { return resp, fmt.Errorf("raft remove server %s failed: client connection to master exists", req.Id) } } idxFuture := ms.Topo.HashicorpRaft.RemoveServer(raft.ServerID(req.Id), 0, 0) if err := idxFuture.Error(); err != nil { return nil, err } return resp, nil }