mirror of https://github.com/docker/docs.git
Move some image related methods & struct to smaller files
Signed-off-by: Vincent Demeester <vincent@sbr.pm>
This commit is contained in:
Vincent Demeester
parent
e3079b4704
commit
d5baf8ddcf
277
daemon/daemon.go
277
daemon/daemon.go
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@ -24,7 +24,6 @@ import (
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"github.com/Sirupsen/logrus"
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"github.com/Sirupsen/logrus"
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containerd "github.com/docker/containerd/api/grpc/types"
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containerd "github.com/docker/containerd/api/grpc/types"
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"github.com/docker/docker/api"
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"github.com/docker/docker/api"
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"github.com/docker/docker/builder"
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"github.com/docker/docker/container"
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"github.com/docker/docker/container"
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"github.com/docker/docker/daemon/events"
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"github.com/docker/docker/daemon/events"
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"github.com/docker/docker/daemon/exec"
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"github.com/docker/docker/daemon/exec"
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@ -41,7 +40,6 @@ import (
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"github.com/docker/docker/distribution/xfer"
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"github.com/docker/docker/distribution/xfer"
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"github.com/docker/docker/dockerversion"
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"github.com/docker/docker/dockerversion"
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"github.com/docker/docker/image"
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"github.com/docker/docker/image"
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"github.com/docker/docker/image/tarexport"
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"github.com/docker/docker/layer"
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"github.com/docker/docker/layer"
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"github.com/docker/docker/libcontainerd"
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"github.com/docker/docker/libcontainerd"
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"github.com/docker/docker/migrate/v1"
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"github.com/docker/docker/migrate/v1"
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@ -80,15 +78,6 @@ var (
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errSystemNotSupported = fmt.Errorf("The Docker daemon is not supported on this platform.")
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errSystemNotSupported = fmt.Errorf("The Docker daemon is not supported on this platform.")
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)
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)
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// ErrImageDoesNotExist is error returned when no image can be found for a reference.
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type ErrImageDoesNotExist struct {
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RefOrID string
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}
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func (e ErrImageDoesNotExist) Error() string {
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return fmt.Sprintf("no such id: %s", e.RefOrID)
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}
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// Daemon holds information about the Docker daemon.
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// Daemon holds information about the Docker daemon.
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type Daemon struct {
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type Daemon struct {
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ID string
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ID string
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@ -1008,221 +997,6 @@ func isBrokenPipe(e error) bool {
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return e == syscall.EPIPE
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return e == syscall.EPIPE
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}
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}
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// ExportImage exports a list of images to the given output stream. The
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// exported images are archived into a tar when written to the output
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// stream. All images with the given tag and all versions containing
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// the same tag are exported. names is the set of tags to export, and
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// outStream is the writer which the images are written to.
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func (daemon *Daemon) ExportImage(names []string, outStream io.Writer) error {
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imageExporter := tarexport.NewTarExporter(daemon.imageStore, daemon.layerStore, daemon.referenceStore, daemon)
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return imageExporter.Save(names, outStream)
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}
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// LookupImage looks up an image by name and returns it as an ImageInspect
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// structure.
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func (daemon *Daemon) LookupImage(name string) (*types.ImageInspect, error) {
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img, err := daemon.GetImage(name)
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if err != nil {
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return nil, fmt.Errorf("No such image: %s", name)
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}
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refs := daemon.referenceStore.References(img.ID())
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repoTags := []string{}
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repoDigests := []string{}
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for _, ref := range refs {
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switch ref.(type) {
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case reference.NamedTagged:
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repoTags = append(repoTags, ref.String())
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case reference.Canonical:
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repoDigests = append(repoDigests, ref.String())
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}
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}
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var size int64
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var layerMetadata map[string]string
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layerID := img.RootFS.ChainID()
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if layerID != "" {
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l, err := daemon.layerStore.Get(layerID)
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if err != nil {
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return nil, err
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}
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defer layer.ReleaseAndLog(daemon.layerStore, l)
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size, err = l.Size()
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if err != nil {
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return nil, err
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}
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layerMetadata, err = l.Metadata()
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if err != nil {
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return nil, err
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}
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}
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comment := img.Comment
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if len(comment) == 0 && len(img.History) > 0 {
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comment = img.History[len(img.History)-1].Comment
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}
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imageInspect := &types.ImageInspect{
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ID: img.ID().String(),
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RepoTags: repoTags,
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RepoDigests: repoDigests,
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Parent: img.Parent.String(),
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Comment: comment,
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Created: img.Created.Format(time.RFC3339Nano),
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Container: img.Container,
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ContainerConfig: &img.ContainerConfig,
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DockerVersion: img.DockerVersion,
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Author: img.Author,
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Config: img.Config,
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Architecture: img.Architecture,
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Os: img.OS,
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Size: size,
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VirtualSize: size, // TODO: field unused, deprecate
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RootFS: rootFSToAPIType(img.RootFS),
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}
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imageInspect.GraphDriver.Name = daemon.GraphDriverName()
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imageInspect.GraphDriver.Data = layerMetadata
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return imageInspect, nil
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}
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// LoadImage uploads a set of images into the repository. This is the
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// complement of ImageExport. The input stream is an uncompressed tar
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// ball containing images and metadata.
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func (daemon *Daemon) LoadImage(inTar io.ReadCloser, outStream io.Writer, quiet bool) error {
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imageExporter := tarexport.NewTarExporter(daemon.imageStore, daemon.layerStore, daemon.referenceStore, daemon)
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return imageExporter.Load(inTar, outStream, quiet)
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}
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// ImageHistory returns a slice of ImageHistory structures for the specified image
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// name by walking the image lineage.
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func (daemon *Daemon) ImageHistory(name string) ([]*types.ImageHistory, error) {
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img, err := daemon.GetImage(name)
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if err != nil {
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return nil, err
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}
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history := []*types.ImageHistory{}
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layerCounter := 0
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rootFS := *img.RootFS
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rootFS.DiffIDs = nil
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for _, h := range img.History {
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var layerSize int64
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if !h.EmptyLayer {
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if len(img.RootFS.DiffIDs) <= layerCounter {
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return nil, fmt.Errorf("too many non-empty layers in History section")
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}
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rootFS.Append(img.RootFS.DiffIDs[layerCounter])
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l, err := daemon.layerStore.Get(rootFS.ChainID())
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if err != nil {
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return nil, err
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}
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layerSize, err = l.DiffSize()
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layer.ReleaseAndLog(daemon.layerStore, l)
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if err != nil {
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return nil, err
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}
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layerCounter++
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}
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history = append([]*types.ImageHistory{{
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ID: "<missing>",
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Created: h.Created.Unix(),
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CreatedBy: h.CreatedBy,
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Comment: h.Comment,
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Size: layerSize,
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}}, history...)
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}
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// Fill in image IDs and tags
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histImg := img
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id := img.ID()
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for _, h := range history {
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h.ID = id.String()
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var tags []string
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for _, r := range daemon.referenceStore.References(id) {
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if _, ok := r.(reference.NamedTagged); ok {
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tags = append(tags, r.String())
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}
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}
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h.Tags = tags
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id = histImg.Parent
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if id == "" {
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break
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}
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histImg, err = daemon.GetImage(id.String())
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if err != nil {
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break
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}
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}
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return history, nil
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}
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// GetImageID returns an image ID corresponding to the image referred to by
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// refOrID.
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func (daemon *Daemon) GetImageID(refOrID string) (image.ID, error) {
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id, ref, err := reference.ParseIDOrReference(refOrID)
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if err != nil {
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return "", err
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}
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if id != "" {
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if _, err := daemon.imageStore.Get(image.ID(id)); err != nil {
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return "", ErrImageDoesNotExist{refOrID}
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}
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return image.ID(id), nil
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}
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if id, err := daemon.referenceStore.Get(ref); err == nil {
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return id, nil
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}
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if tagged, ok := ref.(reference.NamedTagged); ok {
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if id, err := daemon.imageStore.Search(tagged.Tag()); err == nil {
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for _, namedRef := range daemon.referenceStore.References(id) {
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if namedRef.Name() == ref.Name() {
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return id, nil
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}
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}
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}
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}
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// Search based on ID
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if id, err := daemon.imageStore.Search(refOrID); err == nil {
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return id, nil
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}
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return "", ErrImageDoesNotExist{refOrID}
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}
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// GetImage returns an image corresponding to the image referred to by refOrID.
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func (daemon *Daemon) GetImage(refOrID string) (*image.Image, error) {
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imgID, err := daemon.GetImageID(refOrID)
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if err != nil {
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return nil, err
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}
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return daemon.imageStore.Get(imgID)
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}
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// GetImageOnBuild looks up a Docker image referenced by `name`.
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func (daemon *Daemon) GetImageOnBuild(name string) (builder.Image, error) {
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img, err := daemon.GetImage(name)
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if err != nil {
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return nil, err
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}
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return img, nil
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}
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// GraphDriverName returns the name of the graph driver used by the layer.Store
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// GraphDriverName returns the name of the graph driver used by the layer.Store
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func (daemon *Daemon) GraphDriverName() string {
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func (daemon *Daemon) GraphDriverName() string {
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return daemon.layerStore.DriverName()
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return daemon.layerStore.DriverName()
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@ -1243,57 +1017,6 @@ func (daemon *Daemon) GetRemappedUIDGID() (int, int) {
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return uid, gid
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return uid, gid
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}
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}
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// GetCachedImage returns the most recent created image that is a child
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// of the image with imgID, that had the same config when it was
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// created. nil is returned if a child cannot be found. An error is
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// returned if the parent image cannot be found.
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func (daemon *Daemon) GetCachedImage(imgID image.ID, config *containertypes.Config) (*image.Image, error) {
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// Loop on the children of the given image and check the config
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getMatch := func(siblings []image.ID) (*image.Image, error) {
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var match *image.Image
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for _, id := range siblings {
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img, err := daemon.imageStore.Get(id)
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if err != nil {
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return nil, fmt.Errorf("unable to find image %q", id)
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}
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if runconfig.Compare(&img.ContainerConfig, config) {
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// check for the most up to date match
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if match == nil || match.Created.Before(img.Created) {
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match = img
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}
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}
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}
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return match, nil
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}
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// In this case, this is `FROM scratch`, which isn't an actual image.
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if imgID == "" {
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images := daemon.imageStore.Map()
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var siblings []image.ID
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for id, img := range images {
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if img.Parent == imgID {
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siblings = append(siblings, id)
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}
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}
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return getMatch(siblings)
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}
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// find match from child images
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siblings := daemon.imageStore.Children(imgID)
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return getMatch(siblings)
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}
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// GetCachedImageOnBuild returns a reference to a cached image whose parent equals `parent`
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// and runconfig equals `cfg`. A cache miss is expected to return an empty ID and a nil error.
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func (daemon *Daemon) GetCachedImageOnBuild(imgID string, cfg *containertypes.Config) (string, error) {
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cache, err := daemon.GetCachedImage(image.ID(imgID), cfg)
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if cache == nil || err != nil {
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return "", err
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}
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return cache.ID().String(), nil
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}
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// tempDir returns the default directory to use for temporary files.
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// tempDir returns the default directory to use for temporary files.
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func tempDir(rootDir string, rootUID, rootGID int) (string, error) {
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func tempDir(rootDir string, rootUID, rootGID int) (string, error) {
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var tmpDir string
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var tmpDir string
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@ -0,0 +1,124 @@
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package daemon
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import (
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"fmt"
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"github.com/docker/docker/builder"
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"github.com/docker/docker/image"
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"github.com/docker/docker/reference"
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"github.com/docker/docker/runconfig"
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containertypes "github.com/docker/engine-api/types/container"
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)
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// ErrImageDoesNotExist is error returned when no image can be found for a reference.
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type ErrImageDoesNotExist struct {
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RefOrID string
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}
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func (e ErrImageDoesNotExist) Error() string {
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return fmt.Sprintf("no such id: %s", e.RefOrID)
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}
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// GetImageID returns an image ID corresponding to the image referred to by
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// refOrID.
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func (daemon *Daemon) GetImageID(refOrID string) (image.ID, error) {
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id, ref, err := reference.ParseIDOrReference(refOrID)
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if err != nil {
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return "", err
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}
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if id != "" {
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if _, err := daemon.imageStore.Get(image.ID(id)); err != nil {
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return "", ErrImageDoesNotExist{refOrID}
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}
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return image.ID(id), nil
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}
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if id, err := daemon.referenceStore.Get(ref); err == nil {
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return id, nil
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}
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if tagged, ok := ref.(reference.NamedTagged); ok {
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if id, err := daemon.imageStore.Search(tagged.Tag()); err == nil {
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for _, namedRef := range daemon.referenceStore.References(id) {
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if namedRef.Name() == ref.Name() {
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return id, nil
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}
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}
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}
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}
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// Search based on ID
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if id, err := daemon.imageStore.Search(refOrID); err == nil {
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return id, nil
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}
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return "", ErrImageDoesNotExist{refOrID}
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}
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// GetImage returns an image corresponding to the image referred to by refOrID.
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func (daemon *Daemon) GetImage(refOrID string) (*image.Image, error) {
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imgID, err := daemon.GetImageID(refOrID)
|
||||||
|
if err != nil {
|
||||||
|
return nil, err
|
||||||
|
}
|
||||||
|
return daemon.imageStore.Get(imgID)
|
||||||
|
}
|
||||||
|
|
||||||
|
// GetImageOnBuild looks up a Docker image referenced by `name`.
|
||||||
|
func (daemon *Daemon) GetImageOnBuild(name string) (builder.Image, error) {
|
||||||
|
img, err := daemon.GetImage(name)
|
||||||
|
if err != nil {
|
||||||
|
return nil, err
|
||||||
|
}
|
||||||
|
return img, nil
|
||||||
|
}
|
||||||
|
|
||||||
|
// GetCachedImage returns the most recent created image that is a child
|
||||||
|
// of the image with imgID, that had the same config when it was
|
||||||
|
// created. nil is returned if a child cannot be found. An error is
|
||||||
|
// returned if the parent image cannot be found.
|
||||||
|
func (daemon *Daemon) GetCachedImage(imgID image.ID, config *containertypes.Config) (*image.Image, error) {
|
||||||
|
// Loop on the children of the given image and check the config
|
||||||
|
getMatch := func(siblings []image.ID) (*image.Image, error) {
|
||||||
|
var match *image.Image
|
||||||
|
for _, id := range siblings {
|
||||||
|
img, err := daemon.imageStore.Get(id)
|
||||||
|
if err != nil {
|
||||||
|
return nil, fmt.Errorf("unable to find image %q", id)
|
||||||
|
}
|
||||||
|
|
||||||
|
if runconfig.Compare(&img.ContainerConfig, config) {
|
||||||
|
// check for the most up to date match
|
||||||
|
if match == nil || match.Created.Before(img.Created) {
|
||||||
|
match = img
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
return match, nil
|
||||||
|
}
|
||||||
|
|
||||||
|
// In this case, this is `FROM scratch`, which isn't an actual image.
|
||||||
|
if imgID == "" {
|
||||||
|
images := daemon.imageStore.Map()
|
||||||
|
var siblings []image.ID
|
||||||
|
for id, img := range images {
|
||||||
|
if img.Parent == imgID {
|
||||||
|
siblings = append(siblings, id)
|
||||||
|
}
|
||||||
|
}
|
||||||
|
return getMatch(siblings)
|
||||||
|
}
|
||||||
|
|
||||||
|
// find match from child images
|
||||||
|
siblings := daemon.imageStore.Children(imgID)
|
||||||
|
return getMatch(siblings)
|
||||||
|
}
|
||||||
|
|
||||||
|
// GetCachedImageOnBuild returns a reference to a cached image whose parent equals `parent`
|
||||||
|
// and runconfig equals `cfg`. A cache miss is expected to return an empty ID and a nil error.
|
||||||
|
func (daemon *Daemon) GetCachedImageOnBuild(imgID string, cfg *containertypes.Config) (string, error) {
|
||||||
|
cache, err := daemon.GetCachedImage(image.ID(imgID), cfg)
|
||||||
|
if cache == nil || err != nil {
|
||||||
|
return "", err
|
||||||
|
}
|
||||||
|
return cache.ID().String(), nil
|
||||||
|
}
|
||||||
|
|
@ -0,0 +1,25 @@
|
||||||
|
package daemon
|
||||||
|
|
||||||
|
import (
|
||||||
|
"io"
|
||||||
|
|
||||||
|
"github.com/docker/docker/image/tarexport"
|
||||||
|
)
|
||||||
|
|
||||||
|
// ExportImage exports a list of images to the given output stream. The
|
||||||
|
// exported images are archived into a tar when written to the output
|
||||||
|
// stream. All images with the given tag and all versions containing
|
||||||
|
// the same tag are exported. names is the set of tags to export, and
|
||||||
|
// outStream is the writer which the images are written to.
|
||||||
|
func (daemon *Daemon) ExportImage(names []string, outStream io.Writer) error {
|
||||||
|
imageExporter := tarexport.NewTarExporter(daemon.imageStore, daemon.layerStore, daemon.referenceStore, daemon)
|
||||||
|
return imageExporter.Save(names, outStream)
|
||||||
|
}
|
||||||
|
|
||||||
|
// LoadImage uploads a set of images into the repository. This is the
|
||||||
|
// complement of ImageExport. The input stream is an uncompressed tar
|
||||||
|
// ball containing images and metadata.
|
||||||
|
func (daemon *Daemon) LoadImage(inTar io.ReadCloser, outStream io.Writer, quiet bool) error {
|
||||||
|
imageExporter := tarexport.NewTarExporter(daemon.imageStore, daemon.layerStore, daemon.referenceStore, daemon)
|
||||||
|
return imageExporter.Load(inTar, outStream, quiet)
|
||||||
|
}
|
||||||
|
|
@ -0,0 +1,82 @@
|
||||||
|
package daemon
|
||||||
|
|
||||||
|
import (
|
||||||
|
"fmt"
|
||||||
|
|
||||||
|
"github.com/docker/docker/layer"
|
||||||
|
"github.com/docker/docker/reference"
|
||||||
|
"github.com/docker/engine-api/types"
|
||||||
|
)
|
||||||
|
|
||||||
|
// ImageHistory returns a slice of ImageHistory structures for the specified image
|
||||||
|
// name by walking the image lineage.
|
||||||
|
func (daemon *Daemon) ImageHistory(name string) ([]*types.ImageHistory, error) {
|
||||||
|
img, err := daemon.GetImage(name)
|
||||||
|
if err != nil {
|
||||||
|
return nil, err
|
||||||
|
}
|
||||||
|
|
||||||
|
history := []*types.ImageHistory{}
|
||||||
|
|
||||||
|
layerCounter := 0
|
||||||
|
rootFS := *img.RootFS
|
||||||
|
rootFS.DiffIDs = nil
|
||||||
|
|
||||||
|
for _, h := range img.History {
|
||||||
|
var layerSize int64
|
||||||
|
|
||||||
|
if !h.EmptyLayer {
|
||||||
|
if len(img.RootFS.DiffIDs) <= layerCounter {
|
||||||
|
return nil, fmt.Errorf("too many non-empty layers in History section")
|
||||||
|
}
|
||||||
|
|
||||||
|
rootFS.Append(img.RootFS.DiffIDs[layerCounter])
|
||||||
|
l, err := daemon.layerStore.Get(rootFS.ChainID())
|
||||||
|
if err != nil {
|
||||||
|
return nil, err
|
||||||
|
}
|
||||||
|
layerSize, err = l.DiffSize()
|
||||||
|
layer.ReleaseAndLog(daemon.layerStore, l)
|
||||||
|
if err != nil {
|
||||||
|
return nil, err
|
||||||
|
}
|
||||||
|
|
||||||
|
layerCounter++
|
||||||
|
}
|
||||||
|
|
||||||
|
history = append([]*types.ImageHistory{{
|
||||||
|
ID: "<missing>",
|
||||||
|
Created: h.Created.Unix(),
|
||||||
|
CreatedBy: h.CreatedBy,
|
||||||
|
Comment: h.Comment,
|
||||||
|
Size: layerSize,
|
||||||
|
}}, history...)
|
||||||
|
}
|
||||||
|
|
||||||
|
// Fill in image IDs and tags
|
||||||
|
histImg := img
|
||||||
|
id := img.ID()
|
||||||
|
for _, h := range history {
|
||||||
|
h.ID = id.String()
|
||||||
|
|
||||||
|
var tags []string
|
||||||
|
for _, r := range daemon.referenceStore.References(id) {
|
||||||
|
if _, ok := r.(reference.NamedTagged); ok {
|
||||||
|
tags = append(tags, r.String())
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
h.Tags = tags
|
||||||
|
|
||||||
|
id = histImg.Parent
|
||||||
|
if id == "" {
|
||||||
|
break
|
||||||
|
}
|
||||||
|
histImg, err = daemon.GetImage(id.String())
|
||||||
|
if err != nil {
|
||||||
|
break
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
return history, nil
|
||||||
|
}
|
||||||
|
|
@ -0,0 +1,81 @@
|
||||||
|
package daemon
|
||||||
|
|
||||||
|
import (
|
||||||
|
"fmt"
|
||||||
|
"time"
|
||||||
|
|
||||||
|
"github.com/docker/docker/layer"
|
||||||
|
"github.com/docker/docker/reference"
|
||||||
|
"github.com/docker/engine-api/types"
|
||||||
|
)
|
||||||
|
|
||||||
|
// LookupImage looks up an image by name and returns it as an ImageInspect
|
||||||
|
// structure.
|
||||||
|
func (daemon *Daemon) LookupImage(name string) (*types.ImageInspect, error) {
|
||||||
|
img, err := daemon.GetImage(name)
|
||||||
|
if err != nil {
|
||||||
|
return nil, fmt.Errorf("No such image: %s", name)
|
||||||
|
}
|
||||||
|
|
||||||
|
refs := daemon.referenceStore.References(img.ID())
|
||||||
|
repoTags := []string{}
|
||||||
|
repoDigests := []string{}
|
||||||
|
for _, ref := range refs {
|
||||||
|
switch ref.(type) {
|
||||||
|
case reference.NamedTagged:
|
||||||
|
repoTags = append(repoTags, ref.String())
|
||||||
|
case reference.Canonical:
|
||||||
|
repoDigests = append(repoDigests, ref.String())
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
var size int64
|
||||||
|
var layerMetadata map[string]string
|
||||||
|
layerID := img.RootFS.ChainID()
|
||||||
|
if layerID != "" {
|
||||||
|
l, err := daemon.layerStore.Get(layerID)
|
||||||
|
if err != nil {
|
||||||
|
return nil, err
|
||||||
|
}
|
||||||
|
defer layer.ReleaseAndLog(daemon.layerStore, l)
|
||||||
|
size, err = l.Size()
|
||||||
|
if err != nil {
|
||||||
|
return nil, err
|
||||||
|
}
|
||||||
|
|
||||||
|
layerMetadata, err = l.Metadata()
|
||||||
|
if err != nil {
|
||||||
|
return nil, err
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
comment := img.Comment
|
||||||
|
if len(comment) == 0 && len(img.History) > 0 {
|
||||||
|
comment = img.History[len(img.History)-1].Comment
|
||||||
|
}
|
||||||
|
|
||||||
|
imageInspect := &types.ImageInspect{
|
||||||
|
ID: img.ID().String(),
|
||||||
|
RepoTags: repoTags,
|
||||||
|
RepoDigests: repoDigests,
|
||||||
|
Parent: img.Parent.String(),
|
||||||
|
Comment: comment,
|
||||||
|
Created: img.Created.Format(time.RFC3339Nano),
|
||||||
|
Container: img.Container,
|
||||||
|
ContainerConfig: &img.ContainerConfig,
|
||||||
|
DockerVersion: img.DockerVersion,
|
||||||
|
Author: img.Author,
|
||||||
|
Config: img.Config,
|
||||||
|
Architecture: img.Architecture,
|
||||||
|
Os: img.OS,
|
||||||
|
Size: size,
|
||||||
|
VirtualSize: size, // TODO: field unused, deprecate
|
||||||
|
RootFS: rootFSToAPIType(img.RootFS),
|
||||||
|
}
|
||||||
|
|
||||||
|
imageInspect.GraphDriver.Name = daemon.GraphDriverName()
|
||||||
|
|
||||||
|
imageInspect.GraphDriver.Data = layerMetadata
|
||||||
|
|
||||||
|
return imageInspect, nil
|
||||||
|
}
|
||||||
Loading…
Reference in New Issue