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moby--moby/daemon/stop.go
Lei Jitang 6716a3a167 Correct the info message when stop container
Signed-off-by: Lei Jitang <leijitang@huawei.com>
2016-01-27 03:06:45 -05:00

62 lines
2.2 KiB
Go

package daemon
import (
"time"
"github.com/Sirupsen/logrus"
"github.com/docker/docker/container"
derr "github.com/docker/docker/errors"
)
// ContainerStop looks for the given container and terminates it,
// waiting the given number of seconds before forcefully killing the
// container. If a negative number of seconds is given, ContainerStop
// will wait for a graceful termination. An error is returned if the
// container is not found, is already stopped, or if there is a
// problem stopping the container.
func (daemon *Daemon) ContainerStop(name string, seconds int) error {
container, err := daemon.GetContainer(name)
if err != nil {
return err
}
if !container.IsRunning() {
return derr.ErrorCodeStopped
}
if err := daemon.containerStop(container, seconds); err != nil {
return derr.ErrorCodeCantStop.WithArgs(name, err)
}
return nil
}
// containerStop halts a container by sending a stop signal, waiting for the given
// duration in seconds, and then calling SIGKILL and waiting for the
// process to exit. If a negative duration is given, Stop will wait
// for the initial signal forever. If the container is not running Stop returns
// immediately.
func (daemon *Daemon) containerStop(container *container.Container, seconds int) error {
if !container.IsRunning() {
return nil
}
stopSignal := container.StopSignal()
// 1. Send a stop signal
if err := daemon.killPossiblyDeadProcess(container, stopSignal); err != nil {
logrus.Infof("Failed to send signal %d to the process, force killing", stopSignal)
if err := daemon.killPossiblyDeadProcess(container, 9); err != nil {
return err
}
}
// 2. Wait for the process to exit on its own
if _, err := container.WaitStop(time.Duration(seconds) * time.Second); err != nil {
logrus.Infof("Container %v failed to exit within %d seconds of signal %d - using the force", container.ID, seconds, stopSignal)
// 3. If it doesn't, then send SIGKILL
if err := daemon.Kill(container); err != nil {
container.WaitStop(-1 * time.Second)
logrus.Warn(err) // Don't return error because we only care that container is stopped, not what function stopped it
}
}
daemon.LogContainerEvent(container, "stop")
return nil
}