Chris Lu
4 years ago
9 changed files with 731 additions and 480 deletions
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2weed/Makefile
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19weed/command/volume.go
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7weed/pb/volume_server.proto
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1070weed/pb/volume_server_pb/volume_server.pb.go
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10weed/server/volume_grpc_admin.go
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28weed/server/volume_grpc_client_to_master.go
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6weed/server/volume_server.go
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67weed/shell/command_volume_server_leave.go
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2weed/shell/shell_liner.go
1070
weed/pb/volume_server_pb/volume_server.pb.go
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package shell |
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import ( |
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"context" |
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"flag" |
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"fmt" |
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"github.com/chrislusf/seaweedfs/weed/operation" |
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"github.com/chrislusf/seaweedfs/weed/pb/volume_server_pb" |
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"google.golang.org/grpc" |
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"io" |
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) |
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func init() { |
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Commands = append(Commands, &commandVolumeServerLeave{}) |
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} |
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type commandVolumeServerLeave struct { |
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} |
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func (c *commandVolumeServerLeave) Name() string { |
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return "volumeServer.leave" |
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} |
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func (c *commandVolumeServerLeave) Help() string { |
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return `stop a volume server from sending heartbeats to the master |
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volume.unmount -node <volume server host:port> -force |
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This command enables gracefully shutting down the volume server. |
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The volume server will stop sending heartbeats to the master. |
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After draining the traffic for a few seconds, you can safely shut down the volume server. |
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This operation is not revocable unless the volume server is restarted. |
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` |
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} |
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func (c *commandVolumeServerLeave) Do(args []string, commandEnv *CommandEnv, writer io.Writer) (err error) { |
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if err = commandEnv.confirmIsLocked(); err != nil { |
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return |
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} |
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vsLeaveCommand := flag.NewFlagSet(c.Name(), flag.ContinueOnError) |
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volumeServer := vsLeaveCommand.String("node", "", "<host>:<port> of the volume server") |
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if err = vsLeaveCommand.Parse(args); err != nil { |
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return nil |
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} |
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if *volumeServer == "" { |
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return fmt.Errorf("need to specify volume server by -node=<host>:<port>") |
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} |
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return volumeServerLeave(commandEnv.option.GrpcDialOption, *volumeServer, writer) |
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} |
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func volumeServerLeave(grpcDialOption grpc.DialOption, volumeServer string, writer io.Writer) (err error) { |
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return operation.WithVolumeServerClient(volumeServer, grpcDialOption, func(volumeServerClient volume_server_pb.VolumeServerClient) error { |
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_, leaveErr := volumeServerClient.VolumeServerLeave(context.Background(), &volume_server_pb.VolumeServerLeaveRequest{}) |
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if leaveErr != nil { |
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fmt.Fprintf(writer, "ask volume server %s to leave: %v\n", volumeServer, leaveErr) |
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} else { |
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fmt.Fprintf(writer, "stopped heartbeat in volume server %s. After a few seconds to drain traffic, it will be safe to stop the volume server.\n", volumeServer) |
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} |
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return leaveErr |
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}) |
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} |
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