add raft shell cmds

weed/shell/command_raft_cluster_ps.go

@@ -0,0 +1,51 @@
+package shell
+
+import (
+	"context"
+	"flag"
+	"fmt"
+	"github.com/chrislusf/seaweedfs/weed/pb/master_pb"
+	"io"
+)
+
+func init() {
+	Commands = append(Commands, &commandRaftClusterPs{})
+}
+
+type commandRaftClusterPs struct {
+}
+
+func (c *commandRaftClusterPs) Name() string {
+	return "raft.cluster.ps"
+}
+
+func (c *commandRaftClusterPs) Help() string {
+	return `check current raft cluster status
+
+	raft.cluster.ps
+`
+}
+
+func (c *commandRaftClusterPs) Do(args []string, commandEnv *CommandEnv, writer io.Writer) (err error) {
+
+	raftClusterPsCommand := flag.NewFlagSet(c.Name(), flag.ContinueOnError)
+	if err = raftClusterPsCommand.Parse(args); err != nil {
+		return nil
+	}
+
+	err = commandEnv.MasterClient.WithClient(false, func(client master_pb.SeaweedClient) error {
+		resp, err := client.RaftListClusterServers(context.Background(), &master_pb.RaftListClusterServersRequest{})
+		if err != nil {
+			return fmt.Errorf("raft list cluster: %v", err)
+		}
+		fmt.Fprintf(writer, "the raft cluster has %d servers\n", len(resp.ClusterServers))
+		for _, server := range resp.ClusterServers {
+			fmt.Fprintf(writer, "  * %s %s (%s)\n", server.Id, server.Address, server.Suffrage)
+		}
+
+		return nil
+	})
+
+	return err
+
+}

weed/shell/command_raft_server_add.go

@@ -0,0 +1,59 @@
+package shell
+
+import (
+	"context"
+	"flag"
+	"fmt"
+	"github.com/chrislusf/seaweedfs/weed/pb/master_pb"
+	"io"
+)
+
+func init() {
+	Commands = append(Commands, &commandRaftServerAdd{})
+}
+
+type commandRaftServerAdd struct {
+}
+
+func (c *commandRaftServerAdd) Name() string {
+	return "raft.server.add"
+}
+
+func (c *commandRaftServerAdd) Help() string {
+	return `add a server to the raft cluster
+
+	Example:
+		raft.server.add -id <server_name> -address <server_host:port> -voter
+`
+}
+
+func (c *commandRaftServerAdd) Do(args []string, commandEnv *CommandEnv, writer io.Writer) (err error) {
+
+	raftServerAddCommand := flag.NewFlagSet(c.Name(), flag.ContinueOnError)
+	serverId := raftServerAddCommand.String("id", "", "server id")
+	serverAddress := raftServerAddCommand.String("address", "", "server grpc address")
+	serverVoter := raftServerAddCommand.Bool("voter", true, "assign it a vote")
+	if err = raftServerAddCommand.Parse(args); err != nil {
+		return nil
+	}
+
+	if *serverId == "" || *serverAddress == "" {
+		return fmt.Errorf("empty server id or address")
+	}
+
+	err = commandEnv.MasterClient.WithClient(false, func(client master_pb.SeaweedClient) error {
+		_, err := client.RaftAddServer(context.Background(), &master_pb.RaftAddServerRequest{
+			Id:      *serverId,
+			Address: *serverAddress,
+			Voter:   *serverVoter,
+		})
+		if err != nil {
+			return fmt.Errorf("raft add server: %v", err)
+		}
+		println("added server", *serverId)
+		return nil
+	})
+
+	return err
+
+}

weed/shell/command_raft_server_remove.go

@@ -0,0 +1,55 @@
+package shell
+
+import (
+	"context"
+	"flag"
+	"fmt"
+	"github.com/chrislusf/seaweedfs/weed/pb/master_pb"
+	"io"
+)
+
+func init() {
+	Commands = append(Commands, &commandRaftServerRemove{})
+}
+
+type commandRaftServerRemove struct {
+}
+
+func (c *commandRaftServerRemove) Name() string {
+	return "raft.server.remove"
+}
+
+func (c *commandRaftServerRemove) Help() string {
+	return `remove a server from the raft cluster
+
+	Example:
+		raft.server.remove -id <server_name>
+`
+}
+
+func (c *commandRaftServerRemove) Do(args []string, commandEnv *CommandEnv, writer io.Writer) (err error) {
+
+	raftServerAddCommand := flag.NewFlagSet(c.Name(), flag.ContinueOnError)
+	serverId := raftServerAddCommand.String("id", "", "server id")
+	if err = raftServerAddCommand.Parse(args); err != nil {
+		return nil
+	}
+
+	if *serverId == "" {
+		return fmt.Errorf("empty server id")
+	}
+
+	err = commandEnv.MasterClient.WithClient(false, func(client master_pb.SeaweedClient) error {
+		_, err := client.RaftRemoveServer(context.Background(), &master_pb.RaftRemoveServerRequest{
+			Id: *serverId,
+		})
+		if err != nil {
+			return fmt.Errorf("raft remove server: %v", err)
+		}
+		println("removed server", *serverId)
+		return nil
+	})
+
+	return err
+
+}