github.com/jthurman42/docker@v1.6.0-rc1/daemon/rename.go (about)

     1  package daemon
     2  
     3  import "github.com/docker/docker/engine"
     4  
     5  func (daemon *Daemon) ContainerRename(job *engine.Job) engine.Status {
     6  	if len(job.Args) != 2 {
     7  		return job.Errorf("usage: %s OLD_NAME NEW_NAME", job.Name)
     8  	}
     9  	oldName := job.Args[0]
    10  	newName := job.Args[1]
    11  
    12  	container, err := daemon.Get(oldName)
    13  	if err != nil {
    14  		return job.Error(err)
    15  	}
    16  
    17  	oldName = container.Name
    18  
    19  	container.Lock()
    20  	defer container.Unlock()
    21  	if newName, err = daemon.reserveName(container.ID, newName); err != nil {
    22  		return job.Errorf("Error when allocating new name: %s", err)
    23  	}
    24  
    25  	container.Name = newName
    26  
    27  	undo := func() {
    28  		container.Name = oldName
    29  		daemon.reserveName(container.ID, oldName)
    30  		daemon.containerGraph.Delete(newName)
    31  	}
    32  
    33  	if err := daemon.containerGraph.Delete(oldName); err != nil {
    34  		undo()
    35  		return job.Errorf("Failed to delete container %q: %v", oldName, err)
    36  	}
    37  
    38  	if err := container.toDisk(); err != nil {
    39  		undo()
    40  		return job.Error(err)
    41  	}
    42  
    43  	return engine.StatusOK
    44  }