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- package daemon
- import (
- "fmt"
- "github.com/Sirupsen/logrus"
- "github.com/docker/docker/container"
- )
- // ContainerRestart stops and starts a container. It attempts to
- // gracefully stop the container within the given timeout, forcefully
- // stopping it if the timeout is exceeded. If given a negative
- // timeout, ContainerRestart will wait forever until a graceful
- // stop. Returns an error if the container cannot be found, or if
- // there is an underlying error at any stage of the restart.
- func (daemon *Daemon) ContainerRestart(name string, seconds *int) error {
- container, err := daemon.GetContainer(name)
- if err != nil {
- return err
- }
- if seconds == nil {
- stopTimeout := container.StopTimeout()
- seconds = &stopTimeout
- }
- if err := daemon.containerRestart(container, *seconds); err != nil {
- return fmt.Errorf("Cannot restart container %s: %v", name, err)
- }
- return nil
- }
- // containerRestart attempts to gracefully stop and then start the
- // container. When stopping, wait for the given duration in seconds to
- // gracefully stop, before forcefully terminating the container. If
- // given a negative duration, wait forever for a graceful stop.
- func (daemon *Daemon) containerRestart(container *container.Container, seconds int) error {
- // Avoid unnecessarily unmounting and then directly mounting
- // the container when the container stops and then starts
- // again
- if err := daemon.Mount(container); err == nil {
- defer daemon.Unmount(container)
- }
- if container.IsRunning() {
- // set AutoRemove flag to false before stop so the container won't be
- // removed during restart process
- autoRemove := container.HostConfig.AutoRemove
- container.HostConfig.AutoRemove = false
- err := daemon.containerStop(container, seconds)
- // restore AutoRemove irrespective of whether the stop worked or not
- container.HostConfig.AutoRemove = autoRemove
- // containerStop will write HostConfig to disk, we shall restore AutoRemove
- // in disk too
- if toDiskErr := container.ToDiskLocking(); toDiskErr != nil {
- logrus.Errorf("Write container to disk error: %v", toDiskErr)
- }
- if err != nil {
- return err
- }
- }
- if err := daemon.containerStart(container, "", "", true); err != nil {
- return err
- }
- daemon.LogContainerEvent(container, "restart")
- return nil
- }
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