open-nomad/command/stop.go
2015-09-22 10:45:06 -07:00

89 lines
1.9 KiB
Go

package command
import (
"fmt"
"strings"
)
type StopCommand struct {
Meta
}
func (c *StopCommand) Help() string {
helpText := `
Usage: nomad stop [options] <job>
Stop an existing job. This command is used to signal allocations
to shut down for the given job ID. Upon successful deregistraion,
an interactive monitor session will start to display log lines as
the job unwinds its allocations and completes shutting down. It
is safe to exit the monitor early using ctrl+c.
General Options:
` + generalOptionsUsage() + `
Stop Options:
-detach
Return immediately instead of entering monitor mode. After the
deregister command is submitted, a new evaluation ID is printed
to the screen, which can be used to call up a monitor later if
needed using the eval-monitor command.
`
return strings.TrimSpace(helpText)
}
func (c *StopCommand) Synopsis() string {
return "Stop a running job"
}
func (c *StopCommand) Run(args []string) int {
var detach bool
flags := c.Meta.FlagSet("stop", FlagSetClient)
flags.Usage = func() { c.Ui.Output(c.Help()) }
flags.BoolVar(&detach, "detach", false, "")
if err := flags.Parse(args); err != nil {
return 1
}
// Check that we got exactly one job
args = flags.Args()
if len(args) != 1 {
c.Ui.Error(c.Help())
return 1
}
jobID := args[0]
// Get the HTTP client
client, err := c.Meta.Client()
if err != nil {
c.Ui.Error(fmt.Sprintf("Error initializing client: %s", err))
return 1
}
// Check if the job exists
if _, _, err := client.Jobs().Info(jobID, nil); err != nil {
c.Ui.Error(fmt.Sprintf("Error deregistering job: %s", err))
return 1
}
// Invoke the stop
evalID, _, err := client.Jobs().Deregister(jobID, nil)
if err != nil {
c.Ui.Error(fmt.Sprintf("Error deregistering job: %s", err))
return 1
}
if detach {
c.Ui.Output(evalID)
return 0
}
// Start monitoring the stop eval
mon := newMonitor(c.Ui, client)
return mon.monitor(evalID)
}