ca5ede2d0a
Create a supervisor interface to let the container monitor to emit events. Signed-off-by: David Calavera <david.calavera@gmail.com>
46 lines
1.5 KiB
Go
46 lines
1.5 KiB
Go
package daemon
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import (
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derr "github.com/docker/docker/errors"
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)
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// ContainerRestart stops and starts a container. It attempts to
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// gracefully stop the container within the given timeout, forcefully
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// stopping it if the timeout is exceeded. If given a negative
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// timeout, ContainerRestart will wait forever until a graceful
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// stop. Returns an error if the container cannot be found, or if
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// there is an underlying error at any stage of the restart.
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func (daemon *Daemon) ContainerRestart(name string, seconds int) error {
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container, err := daemon.Get(name)
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if err != nil {
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return err
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}
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if err := daemon.containerRestart(container, seconds); err != nil {
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return derr.ErrorCodeCantRestart.WithArgs(name, err)
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}
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return nil
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}
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// containerRestart attempts to gracefully stop and then start the
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// container. When stopping, wait for the given duration in seconds to
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// gracefully stop, before forcefully terminating the container. If
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// given a negative duration, wait forever for a graceful stop.
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func (daemon *Daemon) containerRestart(container *Container, seconds int) error {
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// Avoid unnecessarily unmounting and then directly mounting
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// the container when the container stops and then starts
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// again
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if err := daemon.Mount(container); err == nil {
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defer daemon.Unmount(container)
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}
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if err := daemon.containerStop(container, seconds); err != nil {
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return err
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}
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if err := daemon.containerStart(container); err != nil {
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return err
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}
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daemon.LogContainerEvent(container, "restart")
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return nil
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}
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