mirror of https://github.com/status-im/consul.git
94 lines
1.9 KiB
Go
94 lines
1.9 KiB
Go
// Copyright (c) HashiCorp, Inc.
|
|
// SPDX-License-Identifier: BUSL-1.1
|
|
|
|
package transferleader
|
|
|
|
import (
|
|
"flag"
|
|
"fmt"
|
|
|
|
"github.com/hashicorp/consul/api"
|
|
"github.com/hashicorp/consul/command/flags"
|
|
"github.com/mitchellh/cli"
|
|
)
|
|
|
|
func New(ui cli.Ui) *cmd {
|
|
c := &cmd{UI: ui}
|
|
c.init()
|
|
return c
|
|
}
|
|
|
|
type cmd struct {
|
|
UI cli.Ui
|
|
flags *flag.FlagSet
|
|
http *flags.HTTPFlags
|
|
help string
|
|
id string
|
|
}
|
|
|
|
func (c *cmd) init() {
|
|
c.flags = flag.NewFlagSet("", flag.ContinueOnError)
|
|
c.http = &flags.HTTPFlags{}
|
|
c.flags.StringVar(&c.id, "id", "",
|
|
"The ID of the node to transfer leadership to.")
|
|
flags.Merge(c.flags, c.http.ClientFlags())
|
|
flags.Merge(c.flags, c.http.ServerFlags())
|
|
c.help = flags.Usage(help, c.flags)
|
|
}
|
|
|
|
func (c *cmd) Run(args []string) int {
|
|
if err := c.flags.Parse(args); err != nil {
|
|
if err == flag.ErrHelp {
|
|
return 0
|
|
}
|
|
c.UI.Error(fmt.Sprintf("Failed to parse args: %v", err))
|
|
return 1
|
|
}
|
|
|
|
// Set up a client.
|
|
client, err := c.http.APIClient()
|
|
if err != nil {
|
|
c.UI.Error(fmt.Sprintf("Error initializing client: %s", err))
|
|
return 1
|
|
}
|
|
|
|
// Fetch the current configuration.
|
|
result, err := raftTransferLeader(client, c.http.Stale())
|
|
if err != nil {
|
|
c.UI.Error(fmt.Sprintf("Error transfering leadership: %v", err))
|
|
return 1
|
|
}
|
|
|
|
c.UI.Output(result)
|
|
return 0
|
|
}
|
|
|
|
func raftTransferLeader(client *api.Client, stale bool) (string, error) {
|
|
q := &api.QueryOptions{
|
|
AllowStale: stale,
|
|
}
|
|
reply, err := client.Operator().RaftLeaderTransfer(q)
|
|
if err != nil {
|
|
return "", fmt.Errorf("Failed to transfer leadership %w", err)
|
|
}
|
|
if !reply.Success {
|
|
return "", fmt.Errorf("Failed to transfer leadership")
|
|
}
|
|
return "Success", nil
|
|
}
|
|
|
|
func (c *cmd) Synopsis() string {
|
|
return synopsis
|
|
}
|
|
|
|
func (c *cmd) Help() string {
|
|
return c.help
|
|
}
|
|
|
|
const synopsis = "Transfer raft leadership to another node"
|
|
const help = `
|
|
Usage: consul operator raft transfer-leader [options]
|
|
|
|
Transfer raft leadership to another node.
|
|
`
|