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member_command.go 4.74 KB
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// Copyright 2016 The etcd Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package command
import (
"fmt"
"strconv"
"strings"
"github.com/spf13/cobra"
)
var memberPeerURLs string
// NewMemberCommand returns the cobra command for "member".
func NewMemberCommand() *cobra.Command {
mc := &cobra.Command{
Use: "member <subcommand>",
Short: "Membership related commands",
}
mc.AddCommand(NewMemberAddCommand())
mc.AddCommand(NewMemberRemoveCommand())
mc.AddCommand(NewMemberUpdateCommand())
mc.AddCommand(NewMemberListCommand())
return mc
}
// NewMemberAddCommand returns the cobra command for "member add".
func NewMemberAddCommand() *cobra.Command {
cc := &cobra.Command{
Use: "add <memberName>",
Short: "Adds a member into the cluster",
Run: memberAddCommandFunc,
}
cc.Flags().StringVar(&memberPeerURLs, "peer-urls", "", "comma separated peer URLs for the new member.")
return cc
}
// NewMemberRemoveCommand returns the cobra command for "member remove".
func NewMemberRemoveCommand() *cobra.Command {
cc := &cobra.Command{
Use: "remove <memberID>",
Short: "Removes a member from the cluster",
Run: memberRemoveCommandFunc,
}
return cc
}
// NewMemberUpdateCommand returns the cobra command for "member update".
func NewMemberUpdateCommand() *cobra.Command {
cc := &cobra.Command{
Use: "update <memberID>",
Short: "Updates a member in the cluster",
Run: memberUpdateCommandFunc,
}
cc.Flags().StringVar(&memberPeerURLs, "peer-urls", "", "comma separated peer URLs for the updated member.")
return cc
}
// NewMemberListCommand returns the cobra command for "member list".
func NewMemberListCommand() *cobra.Command {
cc := &cobra.Command{
Use: "list",
Short: "Lists all members in the cluster",
Long: `When --write-out is set to simple, this command prints out comma-separated member lists for each endpoint.
The items in the lists are ID, Status, Name, Peer Addrs, Client Addrs.
`,
Run: memberListCommandFunc,
}
return cc
}
// memberAddCommandFunc executes the "member add" command.
func memberAddCommandFunc(cmd *cobra.Command, args []string) {
if len(args) != 1 {
ExitWithError(ExitBadArgs, fmt.Errorf("member name not provided."))
}
if len(memberPeerURLs) == 0 {
ExitWithError(ExitBadArgs, fmt.Errorf("member peer urls not provided."))
}
urls := strings.Split(memberPeerURLs, ",")
ctx, cancel := commandCtx(cmd)
resp, err := mustClientFromCmd(cmd).MemberAdd(ctx, urls)
cancel()
if err != nil {
ExitWithError(ExitError, err)
}
fmt.Printf("Member %16x added to cluster %16x\n", resp.Member.ID, resp.Header.ClusterId)
}
// memberRemoveCommandFunc executes the "member remove" command.
func memberRemoveCommandFunc(cmd *cobra.Command, args []string) {
if len(args) != 1 {
ExitWithError(ExitBadArgs, fmt.Errorf("member ID is not provided"))
}
id, err := strconv.ParseUint(args[0], 16, 64)
if err != nil {
ExitWithError(ExitBadArgs, fmt.Errorf("bad member ID arg (%v), expecting ID in Hex", err))
}
ctx, cancel := commandCtx(cmd)
resp, err := mustClientFromCmd(cmd).MemberRemove(ctx, id)
cancel()
if err != nil {
ExitWithError(ExitError, err)
}
fmt.Printf("Member %16x removed from cluster %16x\n", id, resp.Header.ClusterId)
}
// memberUpdateCommandFunc executes the "member update" command.
func memberUpdateCommandFunc(cmd *cobra.Command, args []string) {
if len(args) != 1 {
ExitWithError(ExitBadArgs, fmt.Errorf("member ID is not provided"))
}
id, err := strconv.ParseUint(args[0], 16, 64)
if err != nil {
ExitWithError(ExitBadArgs, fmt.Errorf("bad member ID arg (%v), expecting ID in Hex", err))
}
if len(memberPeerURLs) == 0 {
ExitWithError(ExitBadArgs, fmt.Errorf("member peer urls not provided."))
}
urls := strings.Split(memberPeerURLs, ",")
ctx, cancel := commandCtx(cmd)
resp, err := mustClientFromCmd(cmd).MemberUpdate(ctx, id, urls)
cancel()
if err != nil {
ExitWithError(ExitError, err)
}
fmt.Printf("Member %16x updated in cluster %16x\n", id, resp.Header.ClusterId)
}
// memberListCommandFunc executes the "member list" command.
func memberListCommandFunc(cmd *cobra.Command, args []string) {
ctx, cancel := commandCtx(cmd)
resp, err := mustClientFromCmd(cmd).MemberList(ctx)
cancel()
if err != nil {
ExitWithError(ExitError, err)
}
display.MemberList(*resp)
}
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