github.com/uriddle/docker@v0.0.0-20210926094723-4072e6aeb013/daemon/restart.go (about)

     1  package daemon
     2  
     3  import (
     4  	"github.com/docker/docker/container"
     5  	derr "github.com/docker/docker/errors"
     6  )
     7  
     8  // ContainerRestart stops and starts a container. It attempts to
     9  // gracefully stop the container within the given timeout, forcefully
    10  // stopping it if the timeout is exceeded. If given a negative
    11  // timeout, ContainerRestart will wait forever until a graceful
    12  // stop. Returns an error if the container cannot be found, or if
    13  // there is an underlying error at any stage of the restart.
    14  func (daemon *Daemon) ContainerRestart(name string, seconds int) error {
    15  	container, err := daemon.GetContainer(name)
    16  	if err != nil {
    17  		return err
    18  	}
    19  	if err := daemon.containerRestart(container, seconds); err != nil {
    20  		return derr.ErrorCodeCantRestart.WithArgs(name, err)
    21  	}
    22  	return nil
    23  }
    24  
    25  // containerRestart attempts to gracefully stop and then start the
    26  // container. When stopping, wait for the given duration in seconds to
    27  // gracefully stop, before forcefully terminating the container. If
    28  // given a negative duration, wait forever for a graceful stop.
    29  func (daemon *Daemon) containerRestart(container *container.Container, seconds int) error {
    30  	// Avoid unnecessarily unmounting and then directly mounting
    31  	// the container when the container stops and then starts
    32  	// again
    33  	if err := daemon.Mount(container); err == nil {
    34  		defer daemon.Unmount(container)
    35  	}
    36  
    37  	if err := daemon.containerStop(container, seconds); err != nil {
    38  		return err
    39  	}
    40  
    41  	if err := daemon.containerStart(container); err != nil {
    42  		return err
    43  	}
    44  
    45  	daemon.LogContainerEvent(container, "restart")
    46  	return nil
    47  }