open-consul/command/leave/leave.go

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// Copyright (c) HashiCorp, Inc.
// SPDX-License-Identifier: MPL-2.0
package leave
import (
"flag"
"fmt"
"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
}
func (c *cmd) init() {
c.flags = flag.NewFlagSet("", flag.ContinueOnError)
c.http = &flags.HTTPFlags{}
flags.Merge(c.flags, c.http.ClientFlags())
c.help = flags.Usage(help, c.flags)
}
func (c *cmd) Run(args []string) int {
if err := c.flags.Parse(args); err != nil {
return 1
}
nonFlagArgs := c.flags.Args()
if len(nonFlagArgs) > 0 {
c.UI.Error(fmt.Sprintf("Error found unexpected args: %v", nonFlagArgs))
c.UI.Output(c.Help())
return 1
}
client, err := c.http.APIClient()
if err != nil {
c.UI.Error(fmt.Sprintf("Error connecting to Consul agent: %s", err))
return 1
}
if err := client.Agent().Leave(); err != nil {
c.UI.Error(fmt.Sprintf("Error leaving: %s", err))
return 1
}
c.UI.Output("Graceful leave complete")
return 0
}
func (c *cmd) Synopsis() string {
return synopsis
}
func (c *cmd) Help() string {
return c.help
}
const synopsis = "Gracefully leaves the Consul cluster and shuts down"
const help = `
Usage: consul leave [options]
Causes the agent to gracefully leave the Consul cluster and shutdown.
`