65 lines
1.7 KiB
Go
65 lines
1.7 KiB
Go
package daemon
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import (
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"github.com/docker/docker/image"
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"github.com/docker/docker/pkg/archive"
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"github.com/docker/docker/pkg/ioutils"
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"github.com/docker/docker/runconfig"
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)
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// ContainerCommitConfig contains build configs for commit operation,
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// and is used when making a commit with the current state of the container.
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type ContainerCommitConfig struct {
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Pause bool
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Repo string
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Tag string
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Author string
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Comment string
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Config *runconfig.Config
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}
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// Commit creates a new filesystem image from the current state of a container.
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// The image can optionally be tagged into a repository.
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func (daemon *Daemon) Commit(container *Container, c *ContainerCommitConfig) (*image.Image, error) {
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if c.Pause && !container.isPaused() {
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daemon.containerPause(container)
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defer daemon.containerUnpause(container)
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}
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rwTar, err := daemon.exportContainerRw(container)
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if err != nil {
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return nil, err
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}
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defer func() {
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if rwTar != nil {
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rwTar.Close()
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}
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}()
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// Create a new image from the container's base layers + a new layer from container changes
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img, err := daemon.graph.Create(rwTar, container.ID, container.ImageID, c.Comment, c.Author, container.Config, c.Config)
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if err != nil {
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return nil, err
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}
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// Register the image if needed
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if c.Repo != "" {
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if err := daemon.repositories.Tag(c.Repo, c.Tag, img.ID, true); err != nil {
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return img, err
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}
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}
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container.logEvent("commit")
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return img, nil
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}
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func (daemon *Daemon) exportContainerRw(container *Container) (archive.Archive, error) {
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archive, err := daemon.diff(container)
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if err != nil {
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return nil, err
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}
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return ioutils.NewReadCloserWrapper(archive, func() error {
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err := archive.Close()
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return err
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}),
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nil
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}
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