49 lines
1.0 KiB
Go
49 lines
1.0 KiB
Go
package daemon
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import (
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"fmt"
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)
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// ContainerRename changes the name of a container, using the oldName
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// to find the container. An error is returned if newName is already
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// reserved.
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func (daemon *Daemon) ContainerRename(oldName, newName string) error {
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if oldName == "" || newName == "" {
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return fmt.Errorf("Neither old nor new names may be empty")
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}
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container, err := daemon.Get(oldName)
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if err != nil {
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return err
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}
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oldName = container.Name
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container.Lock()
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defer container.Unlock()
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if newName, err = daemon.reserveName(container.ID, newName); err != nil {
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return fmt.Errorf("Error when allocating new name: %s", err)
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}
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container.Name = newName
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undo := func() {
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container.Name = oldName
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daemon.reserveName(container.ID, oldName)
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daemon.containerGraphDB.Delete(newName)
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}
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if err := daemon.containerGraphDB.Delete(oldName); err != nil {
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undo()
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return fmt.Errorf("Failed to delete container %q: %v", oldName, err)
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}
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if err := container.toDisk(); err != nil {
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undo()
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return err
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}
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container.logEvent("rename")
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return nil
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}
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