open-consul/command/leave.go
2013-12-31 13:06:33 -08:00

56 lines
1.1 KiB
Go

package command
import (
"flag"
"fmt"
"github.com/mitchellh/cli"
"strings"
)
// LeaveCommand is a Command implementation that instructs
// the Consul agent to gracefully leave the cluster
type LeaveCommand struct {
Ui cli.Ui
}
func (c *LeaveCommand) Help() string {
helpText := `
Usage: consul leave
Causes the agent to gracefully leave the Consul cluster and shutdown.
Options:
-rpc-addr=127.0.0.1:7373 RPC address of the Consul agent.
`
return strings.TrimSpace(helpText)
}
func (c *LeaveCommand) Run(args []string) int {
cmdFlags := flag.NewFlagSet("leave", flag.ContinueOnError)
cmdFlags.Usage = func() { c.Ui.Output(c.Help()) }
rpcAddr := RPCAddrFlag(cmdFlags)
if err := cmdFlags.Parse(args); err != nil {
return 1
}
client, err := RPCClient(*rpcAddr)
if err != nil {
c.Ui.Error(fmt.Sprintf("Error connecting to Consul agent: %s", err))
return 1
}
defer client.Close()
if err := client.Leave(); err != nil {
c.Ui.Error(fmt.Sprintf("Error leaving: %s", err))
return 1
}
c.Ui.Output("Graceful leave complete")
return 0
}
func (c *LeaveCommand) Synopsis() string {
return "Gracefully leaves the Consul cluster and shuts down"
}