func (daemon *Daemon) reserveName(id, name string) (string, error) {
if !validContainerNamePattern.MatchString(name) {
return "", fmt.Errorf("Invalid container name (%s), only %s are allowed", name, validContainerNameChars)
}
if name[0] != '/' {
name = "/" + name
}
if _, err := daemon.containerGraph.Set(name, id); err != nil {
if !graphdb.IsNonUniqueNameError(err) {
return "", err
}
conflictingContainer, err := daemon.GetByName(name)
if err != nil {
if strings.Contains(err.Error(), "Could not find entity") {
return "", err
}
// Remove name and continue starting the container
if err := daemon.containerGraph.Delete(name); err != nil {
return "", err
}
} else {
nameAsKnownByUser := strings.TrimPrefix(name, "/")
return "", fmt.Errorf(
"Conflict. The name %q is already in use by container %s. You have to remove (or rename) that container to be able to reuse that name.", nameAsKnownByUser,
stringid.TruncateID(conflictingContainer.ID))
}
}
return name, nil
}
// Run the builder with the context. This is the lynchpin of this package. This
// will (barring errors):
//
// * call readContext() which will set up the temporary directory and unpack
// the context into it.
// * read the dockerfile
// * parse the dockerfile
// * walk the parse tree and execute it by dispatching to handlers. If Remove
// or ForceRemove is set, additional cleanup around containers happens after
// processing.
// * Print a happy message and return the image ID.
//
func (b *builder) Run(context io.Reader) (string, error) {
if err := b.readContext(context); err != nil {
return "", err
}
defer func() {
if err := os.RemoveAll(b.contextPath); err != nil {
logrus.Debugf("[BUILDER] failed to remove temporary context: %s", err)
}
}()
if err := b.readDockerfile(); err != nil {
return "", err
}
// some initializations that would not have been supplied by the caller.
b.Config = &runconfig.Config{}
b.TmpContainers = map[string]struct{}{}
for i, n := range b.dockerfile.Children {
select {
case <-b.cancelled:
logrus.Debug("Builder: build cancelled!")
fmt.Fprintf(b.OutStream, "Build cancelled")
return "", fmt.Errorf("Build cancelled")
default:
// Not cancelled yet, keep going...
}
if err := b.dispatch(i, n); err != nil {
if b.ForceRemove {
b.clearTmp()
}
return "", err
}
fmt.Fprintf(b.OutStream, " ---> %s\n", stringid.TruncateID(b.image))
if b.Remove {
b.clearTmp()
}
}
// check if there are any leftover build-args that were passed but not
// consumed during build. Return an error, if there are any.
leftoverArgs := []string{}
for arg := range b.buildArgs {
if !b.isBuildArgAllowed(arg) {
leftoverArgs = append(leftoverArgs, arg)
}
}
if len(leftoverArgs) > 0 {
return "", fmt.Errorf("One or more build-args %v were not consumed, failing build.", leftoverArgs)
}
if b.image == "" {
return "", fmt.Errorf("No image was generated. Is your Dockerfile empty?")
}
fmt.Fprintf(b.OutStream, "Successfully built %s\n", stringid.TruncateID(b.image))
return b.image, nil
}
func (p *v2Pusher) pushLayerIfNecessary(out io.Writer, l layer.Layer) (digest.Digest, error) {
logrus.Debugf("Pushing layer: %s", l.DiffID())
// Do we have any blobsums associated with this layer's DiffID?
possibleBlobsums, err := p.blobSumService.GetBlobSums(l.DiffID())
if err == nil {
dgst, exists, err := p.blobSumAlreadyExists(possibleBlobsums)
if err != nil {
out.Write(p.sf.FormatProgress(stringid.TruncateID(string(l.DiffID())), "Image push failed", nil))
return "", err
}
if exists {
out.Write(p.sf.FormatProgress(stringid.TruncateID(string(l.DiffID())), "Layer already exists", nil))
return dgst, nil
}
}
// if digest was empty or not saved, or if blob does not exist on the remote repository,
// then push the blob.
pushDigest, err := p.pushV2Layer(p.repo.Blobs(context.Background()), l)
if err != nil {
return "", err
}
// Cache mapping from this layer's DiffID to the blobsum
if err := p.blobSumService.Add(l.DiffID(), pushDigest); err != nil {
return "", err
}
return pushDigest, nil
}
func (p *v1Pusher) pushImage(imgID, ep string) (checksum string, err error) {
jsonRaw, err := p.getV1Config(imgID)
if err != nil {
return "", fmt.Errorf("Cannot retrieve the path for {%s}: %s", imgID, err)
}
p.out.Write(p.sf.FormatProgress(stringid.TruncateID(imgID), "Pushing", nil))
compatibilityID, err := p.getV1ID(imgID)
if err != nil {
return "", err
}
// General rule is to use ID for graph accesses and compatibilityID for
// calls to session.registry()
imgData := ®istry.ImgData{
ID: compatibilityID,
}
// Send the json
if err := p.session.PushImageJSONRegistry(imgData, jsonRaw, ep); err != nil {
if err == registry.ErrAlreadyExists {
p.out.Write(p.sf.FormatProgress(stringid.TruncateID(imgID), "Image already pushed, skipping", nil))
return "", nil
}
return "", err
}
layerData, err := p.graph.TempLayerArchive(imgID, p.sf, p.out)
if err != nil {
return "", fmt.Errorf("Failed to generate layer archive: %s", err)
}
defer os.RemoveAll(layerData.Name())
// Send the layer
logrus.Debugf("rendered layer for %s of [%d] size", imgID, layerData.Size)
checksum, checksumPayload, err := p.session.PushImageLayerRegistry(imgData.ID,
progressreader.New(progressreader.Config{
In: layerData,
Out: p.out,
Formatter: p.sf,
Size: layerData.Size,
NewLines: false,
ID: stringid.TruncateID(imgID),
Action: "Pushing",
}), ep, jsonRaw)
if err != nil {
return "", err
}
imgData.Checksum = checksum
imgData.ChecksumPayload = checksumPayload
// Send the checksum
if err := p.session.PushImageChecksumRegistry(imgData, ep); err != nil {
return "", err
}
p.out.Write(p.sf.FormatProgress(stringid.TruncateID(imgID), "Image successfully pushed", nil))
return imgData.Checksum, nil
}
// Get returns a container using it's ID or Name
func (containers Containers) Get(IDOrName string) *Container {
// Abort immediately if the name is empty.
if len(IDOrName) == 0 {
return nil
}
// Match exact or short Container ID.
for _, container := range containers {
if container.Id == IDOrName || stringid.TruncateID(container.Id) == IDOrName {
return container
}
}
// Match exact Swarm ID.
for _, container := range containers {
if swarmID := container.Config.SwarmID(); swarmID == IDOrName || stringid.TruncateID(swarmID) == IDOrName {
return container
}
}
candidates := []*Container{}
// Match name, /name or engine/name.
for _, container := range containers {
for _, name := range container.Names {
if name == IDOrName || name == "/"+IDOrName || container.Engine.ID+name == IDOrName || container.Engine.Name+name == IDOrName {
return container
}
}
}
if size := len(candidates); size == 1 {
return candidates[0]
} else if size > 1 {
return nil
}
// Match Container ID prefix.
for _, container := range containers {
if strings.HasPrefix(container.Id, IDOrName) {
candidates = append(candidates, container)
}
}
// Match Swarm ID prefix.
for _, container := range containers {
if strings.HasPrefix(container.Config.SwarmID(), IDOrName) {
candidates = append(candidates, container)
}
}
if len(candidates) == 1 {
return candidates[0]
}
return nil
}
// checkImageDeleteConflict determines whether there are any conflicts
// preventing deletion of the given image from this daemon. A hard conflict is
// any image which has the given image as a parent or any running container
// using the image. A soft conflict is any tags/digest referencing the given
// image or any stopped container using the image. If ignoreSoftConflicts is
// true, this function will not check for soft conflict conditions.
func (daemon *Daemon) checkImageDeleteConflict(imgID image.ID, mask conflictType) *imageDeleteConflict {
// Check if the image has any descendent images.
if mask&conflictDependentChild != 0 && len(daemon.imageStore.Children(imgID)) > 0 {
return &imageDeleteConflict{
hard: true,
imgID: imgID,
message: "image has dependent child images",
}
}
if mask&conflictRunningContainer != 0 {
// Check if any running container is using the image.
for _, container := range daemon.List() {
if !container.IsRunning() {
// Skip this until we check for soft conflicts later.
continue
}
if container.ImageID == imgID {
return &imageDeleteConflict{
imgID: imgID,
hard: true,
used: true,
message: fmt.Sprintf("image is being used by running container %s", stringid.TruncateID(container.ID)),
}
}
}
}
// Check if any repository tags/digest reference this image.
if mask&conflictActiveReference != 0 && len(daemon.referenceStore.References(imgID)) > 0 {
return &imageDeleteConflict{
imgID: imgID,
message: "image is referenced in one or more repositories",
}
}
if mask&conflictStoppedContainer != 0 {
// Check if any stopped containers reference this image.
for _, container := range daemon.List() {
if container.IsRunning() {
// Skip this as it was checked above in hard conflict conditions.
continue
}
if container.ImageID == imgID {
return &imageDeleteConflict{
imgID: imgID,
used: true,
message: fmt.Sprintf("image is being used by stopped container %s", stringid.TruncateID(container.ID)),
}
}
}
}
return nil
}
// CmdHistory shows the history of an image.
//
// Usage: docker history [OPTIONS] IMAGE
func (cli *DockerCli) CmdHistory(args ...string) error {
cmd := Cli.Subcmd("history", []string{"IMAGE"}, Cli.DockerCommands["history"].Description, true)
human := cmd.Bool([]string{"H", "-human"}, true, "Print sizes and dates in human readable format")
quiet := cmd.Bool([]string{"q", "-quiet"}, false, "Only show numeric IDs")
noTrunc := cmd.Bool([]string{"#notrunc", "-no-trunc"}, false, "Don't truncate output")
cmd.Require(flag.Exact, 1)
cmd.ParseFlags(args, true)
serverResp, err := cli.call("GET", "/images/"+cmd.Arg(0)+"/history", nil, nil)
if err != nil {
return err
}
defer serverResp.body.Close()
history := []types.ImageHistory{}
if err := json.NewDecoder(serverResp.body).Decode(&history); err != nil {
return err
}
w := tabwriter.NewWriter(cli.out, 20, 1, 3, ' ', 0)
if *quiet {
for _, entry := range history {
if *noTrunc {
fmt.Fprintf(w, "%s\n", entry.ID)
} else {
fmt.Fprintf(w, "%s\n", stringid.TruncateID(entry.ID))
}
}
w.Flush()
return nil
}
fmt.Fprintln(w, "IMAGE\tCREATED\tCREATED BY\tSIZE\tCOMMENT")
for _, entry := range history {
imageID := entry.ID
createdBy := strings.Replace(entry.CreatedBy, "\t", " ", -1)
if *noTrunc == false {
createdBy = stringutils.Truncate(createdBy, 45)
imageID = stringid.TruncateID(entry.ID)
}
created := units.HumanDuration(time.Now().UTC().Sub(time.Unix(entry.Created, 0))) + " ago"
size := units.HumanSize(float64(entry.Size))
if *human == false {
created = time.Unix(entry.Created, 0).Format(time.RFC3339)
size = strconv.FormatInt(entry.Size, 10)
}
fmt.Fprintf(w, "%s\t%s\t%s\t%s\t%s\n", imageID, created, createdBy, size, entry.Comment)
}
w.Flush()
return nil
}
func (p *v2Pusher) pushV2Image(bs distribution.BlobService, img *image.Image) (digest.Digest, error) {
out := p.config.OutStream
out.Write(p.sf.FormatProgress(stringid.TruncateID(img.ID), "Preparing", nil))
image, err := p.graph.Get(img.ID)
if err != nil {
return "", err
}
arch, err := p.graph.TarLayer(image)
if err != nil {
return "", err
}
defer arch.Close()
// Send the layer
layerUpload, err := bs.Create(context.Background())
if err != nil {
return "", err
}
defer layerUpload.Close()
digester := digest.Canonical.New()
tee := io.TeeReader(arch, digester.Hash())
reader := progressreader.New(progressreader.Config{
In: ioutil.NopCloser(tee), // we'll take care of close here.
Out: out,
Formatter: p.sf,
// TODO(stevvooe): This may cause a size reporting error. Try to get
// this from tar-split or elsewhere. The main issue here is that we
// don't want to buffer to disk *just* to calculate the size.
Size: img.Size,
NewLines: false,
ID: stringid.TruncateID(img.ID),
Action: "Pushing",
})
out.Write(p.sf.FormatProgress(stringid.TruncateID(img.ID), "Pushing", nil))
nn, err := io.Copy(layerUpload, reader)
if err != nil {
return "", err
}
dgst := digester.Digest()
if _, err := layerUpload.Commit(context.Background(), distribution.Descriptor{Digest: dgst}); err != nil {
return "", err
}
logrus.Debugf("uploaded layer %s (%s), %d bytes", img.ID, dgst, nn)
out.Write(p.sf.FormatProgress(stringid.TruncateID(img.ID), "Pushed", nil))
return dgst, nil
}
func (p *v2Puller) download(di *downloadInfo) {
logrus.Debugf("pulling blob %q", di.digest)
blobs := p.repo.Blobs(context.Background())
desc, err := blobs.Stat(context.Background(), di.digest)
if err != nil {
logrus.Debugf("Error statting layer: %v", err)
di.err <- err
return
}
di.size = desc.Size
layerDownload, err := blobs.Open(context.Background(), di.digest)
if err != nil {
logrus.Debugf("Error fetching layer: %v", err)
di.err <- err
return
}
defer layerDownload.Close()
verifier, err := digest.NewDigestVerifier(di.digest)
if err != nil {
di.err <- err
return
}
digestStr := di.digest.String()
reader := progressreader.New(progressreader.Config{
In: ioutil.NopCloser(io.TeeReader(layerDownload, verifier)),
Out: di.broadcaster,
Formatter: p.sf,
Size: di.size,
NewLines: false,
ID: stringid.TruncateID(digestStr),
Action: "Downloading",
})
io.Copy(di.tmpFile, reader)
di.broadcaster.Write(p.sf.FormatProgress(stringid.TruncateID(digestStr), "Verifying Checksum", nil))
if !verifier.Verified() {
err = fmt.Errorf("filesystem layer verification failed for digest %s", di.digest)
logrus.Error(err)
di.err <- err
return
}
di.broadcaster.Write(p.sf.FormatProgress(stringid.TruncateID(digestStr), "Download complete", nil))
logrus.Debugf("Downloaded %s to tempfile %s", digestStr, di.tmpFile.Name())
di.layer = layerDownload
di.err <- nil
}
// CmdServiceLs handles service list UI
func (cli *NetworkCli) CmdServiceLs(chain string, args ...string) error {
cmd := cli.Subcmd(chain, "ls", "SERVICE", "Lists all the services on a network", false)
flNetwork := cmd.String([]string{"net", "-network"}, "", "Only show the services that are published on the specified network")
quiet := cmd.Bool([]string{"q", "-quiet"}, false, "Only display numeric IDs")
noTrunc := cmd.Bool([]string{"#notrunc", "-no-trunc"}, false, "Do not truncate the output")
err := cmd.ParseFlags(args, true)
if err != nil {
return err
}
var obj []byte
if *flNetwork == "" {
obj, _, err = readBody(cli.call("GET", "/services", nil, nil))
} else {
obj, _, err = readBody(cli.call("GET", "/services?network="+*flNetwork, nil, nil))
}
if err != nil {
return err
}
var serviceResources []serviceResource
err = json.Unmarshal(obj, &serviceResources)
if err != nil {
fmt.Println(err)
return err
}
wr := tabwriter.NewWriter(cli.out, 20, 1, 3, ' ', 0)
// unless quiet (-q) is specified, print field titles
if !*quiet {
fmt.Fprintln(wr, "SERVICE ID\tNAME\tNETWORK\tCONTAINER\tSANDBOX")
}
for _, sr := range serviceResources {
ID := sr.ID
bkID, sbID, err := getBackendID(cli, ID)
if err != nil {
return err
}
if !*noTrunc {
ID = stringid.TruncateID(ID)
bkID = stringid.TruncateID(bkID)
sbID = stringid.TruncateID(sbID)
}
if !*quiet {
fmt.Fprintf(wr, "%s\t%s\t%s\t%s\t%s\n", ID, sr.Name, sr.Network, bkID, sbID)
} else {
fmt.Fprintln(wr, ID)
}
}
wr.Flush()
return nil
}
// CmdHistory shows the history of an image.
//
// Usage: docker history [OPTIONS] IMAGE
func (cli *DockerCli) CmdHistory(args ...string) error {
cmd := Cli.Subcmd("history", []string{"IMAGE"}, Cli.DockerCommands["history"].Description, true)
human := cmd.Bool([]string{"H", "-human"}, true, "Print sizes and dates in human readable format")
quiet := cmd.Bool([]string{"q", "-quiet"}, false, "Only show numeric IDs")
noTrunc := cmd.Bool([]string{"-no-trunc"}, false, "Don't truncate output")
cmd.Require(flag.Exact, 1)
cmd.ParseFlags(args, true)
history, err := cli.client.ImageHistory(context.Background(), cmd.Arg(0))
if err != nil {
return err
}
w := tabwriter.NewWriter(cli.out, 20, 1, 3, ' ', 0)
if *quiet {
for _, entry := range history {
if *noTrunc {
fmt.Fprintf(w, "%s\n", entry.ID)
} else {
fmt.Fprintf(w, "%s\n", stringid.TruncateID(entry.ID))
}
}
w.Flush()
return nil
}
var imageID string
var createdBy string
var created string
var size string
fmt.Fprintln(w, "IMAGE\tCREATED\tCREATED BY\tSIZE\tCOMMENT")
for _, entry := range history {
imageID = entry.ID
createdBy = strings.Replace(entry.CreatedBy, "\t", " ", -1)
if *noTrunc == false {
createdBy = stringutils.Truncate(createdBy, 45)
imageID = stringid.TruncateID(entry.ID)
}
if *human {
created = units.HumanDuration(time.Now().UTC().Sub(time.Unix(entry.Created, 0))) + " ago"
size = units.HumanSize(float64(entry.Size))
} else {
created = time.Unix(entry.Created, 0).Format(time.RFC3339)
size = strconv.FormatInt(entry.Size, 10)
}
fmt.Fprintf(w, "%s\t%s\t%s\t%s\t%s\n", imageID, created, createdBy, size, entry.Comment)
}
w.Flush()
return nil
}
func (s *TagStore) pushImage(r *registry.Session, out io.Writer, imgID, ep string, token []string, sf *streamformatter.StreamFormatter) (checksum string, err error) {
out = ioutils.NewWriteFlusher(out)
jsonRaw, err := s.graph.RawJSON(imgID)
if err != nil {
return "", fmt.Errorf("Cannot retrieve the path for {%s}: %s", imgID, err)
}
out.Write(sf.FormatProgress(stringid.TruncateID(imgID), "Pushing", nil))
imgData := ®istry.ImgData{
ID: imgID,
}
// Send the json
if err := r.PushImageJSONRegistry(imgData, jsonRaw, ep); err != nil {
if err == registry.ErrAlreadyExists {
out.Write(sf.FormatProgress(stringid.TruncateID(imgData.ID), "Image already pushed, skipping", nil))
return "", nil
}
return "", err
}
layerData, err := s.graph.TempLayerArchive(imgID, sf, out)
if err != nil {
return "", fmt.Errorf("Failed to generate layer archive: %s", err)
}
defer os.RemoveAll(layerData.Name())
// Send the layer
logrus.Debugf("rendered layer for %s of [%d] size", imgData.ID, layerData.Size)
checksum, checksumPayload, err := r.PushImageLayerRegistry(imgData.ID,
progressreader.New(progressreader.Config{
In: layerData,
Out: out,
Formatter: sf,
Size: int(layerData.Size),
NewLines: false,
ID: stringid.TruncateID(imgData.ID),
Action: "Pushing",
}), ep, jsonRaw)
if err != nil {
return "", err
}
imgData.Checksum = checksum
imgData.ChecksumPayload = checksumPayload
// Send the checksum
if err := r.PushImageChecksumRegistry(imgData, ep); err != nil {
return "", err
}
out.Write(sf.FormatProgress(stringid.TruncateID(imgData.ID), "Image successfully pushed", nil))
return imgData.Checksum, nil
}
func (c *containerContext) Image() string {
c.addHeader(imageHeader)
if c.c.Image == "" {
return "<no image>"
}
if c.trunc {
if trunc := stringid.TruncateID(c.c.ImageID); trunc == stringid.TruncateID(c.c.Image) {
return trunc
}
}
return c.c.Image
}
func (c *containerContext) Image() string {
c.addHeader(imageHeader)
if c.c.Image == "" {
return "<no image>"
}
if c.trunc {
if stringid.TruncateID(c.c.ImageID) == stringid.TruncateID(c.c.Image) {
return stringutils.Truncate(c.c.Image, 12)
}
}
return c.c.Image
}
func (p *v1Puller) downloadImage(ctx context.Context, repoData *registry.RepositoryData, img *registry.ImgData, layersDownloaded *bool) error {
if img.Tag == "" {
logrus.Debugf("Image (id: %s) present in this repository but untagged, skipping", img.ID)
return nil
}
localNameRef, err := reference.WithTag(p.repoInfo, img.Tag)
if err != nil {
retErr := fmt.Errorf("Image (id: %s) has invalid tag: %s", img.ID, img.Tag)
logrus.Debug(retErr.Error())
return retErr
}
if err := v1.ValidateID(img.ID); err != nil {
return err
}
progress.Updatef(p.config.ProgressOutput, stringid.TruncateID(img.ID), "Pulling image (%s) from %s", img.Tag, p.repoInfo.FullName())
success := false
var lastErr error
for _, ep := range p.repoInfo.Index.Mirrors {
ep += "v1/"
progress.Updatef(p.config.ProgressOutput, stringid.TruncateID(img.ID), fmt.Sprintf("Pulling image (%s) from %s, mirror: %s", img.Tag, p.repoInfo.FullName(), ep))
if err = p.pullImage(ctx, img.ID, ep, localNameRef, layersDownloaded); err != nil {
// Don't report errors when pulling from mirrors.
logrus.Debugf("Error pulling image (%s) from %s, mirror: %s, %s", img.Tag, p.repoInfo.FullName(), ep, err)
continue
}
success = true
break
}
if !success {
for _, ep := range repoData.Endpoints {
progress.Updatef(p.config.ProgressOutput, stringid.TruncateID(img.ID), "Pulling image (%s) from %s, endpoint: %s", img.Tag, p.repoInfo.FullName(), ep)
if err = p.pullImage(ctx, img.ID, ep, localNameRef, layersDownloaded); err != nil {
// It's not ideal that only the last error is returned, it would be better to concatenate the errors.
// As the error is also given to the output stream the user will see the error.
lastErr = err
progress.Updatef(p.config.ProgressOutput, stringid.TruncateID(img.ID), "Error pulling image (%s) from %s, endpoint: %s, %s", img.Tag, p.repoInfo.FullName(), ep, err)
continue
}
success = true
break
}
}
if !success {
err := fmt.Errorf("Error pulling image (%s) from %s, %v", img.Tag, p.repoInfo.FullName(), lastErr)
progress.Update(p.config.ProgressOutput, stringid.TruncateID(img.ID), err.Error())
return err
}
return nil
}
// CmdHistory shows the history of an image.
//
// Usage: docker history [OPTIONS] IMAGE
func (cli *DockerCli) CmdHistory(args ...string) error {
cmd := cli.Subcmd("history", "IMAGE", "Show the history of an image", true)
quiet := cmd.Bool([]string{"q", "-quiet"}, false, "Only show numeric IDs")
noTrunc := cmd.Bool([]string{"#notrunc", "-no-trunc"}, false, "Don't truncate output")
cmd.Require(flag.Exact, 1)
utils.ParseFlags(cmd, args, true)
body, _, err := readBody(cli.call("GET", "/images/"+cmd.Arg(0)+"/history", nil, nil))
if err != nil {
return err
}
outs := engine.NewTable("Created", 0)
if _, err := outs.ReadListFrom(body); err != nil {
return err
}
w := tabwriter.NewWriter(cli.out, 20, 1, 3, ' ', 0)
if !*quiet {
fmt.Fprintln(w, "IMAGE\tCREATED\tCREATED BY\tSIZE")
}
for _, out := range outs.Data {
outID := out.Get("Id")
if !*quiet {
if *noTrunc {
fmt.Fprintf(w, "%s\t", outID)
} else {
fmt.Fprintf(w, "%s\t", stringid.TruncateID(outID))
}
fmt.Fprintf(w, "%s ago\t", units.HumanDuration(time.Now().UTC().Sub(time.Unix(out.GetInt64("Created"), 0))))
if *noTrunc {
fmt.Fprintf(w, "%s\t", out.Get("CreatedBy"))
} else {
fmt.Fprintf(w, "%s\t", utils.Trunc(out.Get("CreatedBy"), 45))
}
fmt.Fprintf(w, "%s\n", units.HumanSize(float64(out.GetInt64("Size"))))
} else {
if *noTrunc {
fmt.Fprintln(w, outID)
} else {
fmt.Fprintln(w, stringid.TruncateID(outID))
}
}
}
w.Flush()
return nil
}
func (b *Builder) clearTmp() {
for c := range b.TmpContainers {
rmConfig := &daemon.ContainerRmConfig{
ForceRemove: true,
RemoveVolume: true,
}
if err := b.Daemon.ContainerRm(c, rmConfig); err != nil {
fmt.Fprintf(b.OutStream, "Error removing intermediate container %s: %v\n", stringid.TruncateID(c), err)
return
}
delete(b.TmpContainers, c)
fmt.Fprintf(b.OutStream, "Removing intermediate container %s\n", stringid.TruncateID(c))
}
}
func runHistory(dockerCli *client.DockerCli, opts historyOptions) error {
ctx := context.Background()
history, err := dockerCli.Client().ImageHistory(ctx, opts.image)
if err != nil {
return err
}
w := tabwriter.NewWriter(dockerCli.Out(), 20, 1, 3, ' ', 0)
if opts.quiet {
for _, entry := range history {
if opts.noTrunc {
fmt.Fprintf(w, "%s\n", entry.ID)
} else {
fmt.Fprintf(w, "%s\n", stringid.TruncateID(entry.ID))
}
}
w.Flush()
return nil
}
var imageID string
var createdBy string
var created string
var size string
fmt.Fprintln(w, "IMAGE\tCREATED\tCREATED BY\tSIZE\tCOMMENT")
for _, entry := range history {
imageID = entry.ID
createdBy = strings.Replace(entry.CreatedBy, "\t", " ", -1)
if !opts.noTrunc {
createdBy = stringutils.Ellipsis(createdBy, 45)
imageID = stringid.TruncateID(entry.ID)
}
if opts.human {
created = units.HumanDuration(time.Now().UTC().Sub(time.Unix(entry.Created, 0))) + " ago"
size = units.HumanSize(float64(entry.Size))
} else {
created = time.Unix(entry.Created, 0).Format(time.RFC3339)
size = strconv.FormatInt(entry.Size, 10)
}
fmt.Fprintf(w, "%s\t%s\t%s\t%s\t%s\n", imageID, created, createdBy, size, entry.Comment)
}
w.Flush()
return nil
}
// checkImageDeleteConflict determines whether there are any conflicts
// preventing deletion of the given image from this daemon. A hard conflict is
// any image which has the given image as a parent or any running container
// using the image. A soft conflict is any tags/digest referencing the given
// image or any stopped container using the image. If ignoreSoftConflicts is
// true, this function will not check for soft conflict conditions.
func (daemon *Daemon) checkImageDeleteConflict(imgID image.ID, mask conflictType) *imageDeleteConflict {
// Check if the image has any descendant images.
if mask&conflictDependentChild != 0 && len(daemon.imageStore.Children(imgID)) > 0 {
return &imageDeleteConflict{
hard: true,
imgID: imgID,
message: "image has dependent child images",
}
}
if mask&conflictRunningContainer != 0 {
// Check if any running container is using the image.
running := func(c *container.Container) bool {
return c.IsRunning() && c.ImageID == imgID
}
if container := daemon.containers.First(running); container != nil {
return &imageDeleteConflict{
imgID: imgID,
hard: true,
used: true,
message: fmt.Sprintf("image is being used by running container %s", stringid.TruncateID(container.ID)),
}
}
}
// Check if any repository tags/digest reference this image.
if mask&conflictActiveReference != 0 && len(daemon.referenceStore.References(imgID)) > 0 {
return &imageDeleteConflict{
imgID: imgID,
message: "image is referenced in multiple repositories",
}
}
if mask&conflictStoppedContainer != 0 {
// Check if any stopped containers reference this image.
stopped := func(c *container.Container) bool {
return !c.IsRunning() && c.ImageID == imgID
}
if container := daemon.containers.First(stopped); container != nil {
return &imageDeleteConflict{
imgID: imgID,
used: true,
message: fmt.Sprintf("image is being used by stopped container %s", stringid.TruncateID(container.ID)),
}
}
}
return nil
}
// PushV2Image pushes the image content to the v2 registry, first buffering the contents to disk
func (s *TagStore) pushV2Image(r *registry.Session, img *image.Image, endpoint *registry.Endpoint, imageName string, sf *streamformatter.StreamFormatter, out io.Writer, auth *registry.RequestAuthorization) (string, error) {
out.Write(sf.FormatProgress(stringid.TruncateID(img.ID), "Buffering to Disk", nil))
image, err := s.graph.Get(img.ID)
if err != nil {
return "", err
}
arch, err := image.TarLayer()
if err != nil {
return "", err
}
defer arch.Close()
tf, err := s.graph.newTempFile()
if err != nil {
return "", err
}
defer func() {
tf.Close()
os.Remove(tf.Name())
}()
h := sha256.New()
size, err := bufferToFile(tf, io.TeeReader(arch, h))
if err != nil {
return "", err
}
dgst := digest.NewDigest("sha256", h)
// Send the layer
logrus.Debugf("rendered layer for %s of [%d] size", img.ID, size)
if err := r.PutV2ImageBlob(endpoint, imageName, dgst.Algorithm(), dgst.Hex(),
progressreader.New(progressreader.Config{
In: tf,
Out: out,
Formatter: sf,
Size: int(size),
NewLines: false,
ID: stringid.TruncateID(img.ID),
Action: "Pushing",
}), auth); err != nil {
out.Write(sf.FormatProgress(stringid.TruncateID(img.ID), "Image push failed", nil))
return "", err
}
out.Write(sf.FormatProgress(stringid.TruncateID(img.ID), "Image successfully pushed", nil))
return dgst.String(), nil
}
// Run the builder with the context. This is the lynchpin of this package. This
// will (barring errors):
//
// * call readContext() which will set up the temporary directory and unpack
// the context into it.
// * read the dockerfile
// * parse the dockerfile
// * walk the parse tree and execute it by dispatching to handlers. If Remove
// or ForceRemove is set, additional cleanup around containers happens after
// processing.
// * Print a happy message and return the image ID.
//
func (b *builder) Run(context io.Reader) (string, error) {
if err := b.readContext(context); err != nil {
return "", err
}
defer func() {
if err := os.RemoveAll(b.contextPath); err != nil {
logrus.Debugf("[BUILDER] failed to remove temporary context: %s", err)
}
}()
if err := b.readDockerfile(); err != nil {
return "", err
}
// some initializations that would not have been supplied by the caller.
b.Config = &runconfig.Config{}
b.TmpContainers = map[string]struct{}{}
for i, n := range b.dockerfile.Children {
select {
case <-b.cancelled:
logrus.Debug("Builder: build cancelled!")
fmt.Fprintf(b.OutStream, "Build cancelled")
return "", fmt.Errorf("Build cancelled")
default:
// Not cancelled yet, keep going...
}
if err := b.dispatch(i, n); err != nil {
if b.ForceRemove {
b.clearTmp()
}
return "", err
}
fmt.Fprintf(b.OutStream, " ---> %s\n", stringid.TruncateID(b.image))
if b.Remove {
b.clearTmp()
}
}
if b.image == "" {
return "", fmt.Errorf("No image was generated. Is your Dockerfile empty?")
}
fmt.Fprintf(b.OutStream, "Successfully built %s\n", stringid.TruncateID(b.image))
return b.image, nil
}
func (c *containerContext) ID() string {
c.addHeader(idHeader)
if c.trunc {
return stringid.TruncateID(c.c.ID)
}
return c.c.ID
}
func (s *DockerSuite) TestContainerApiPause(c *check.C) {
testRequires(c, DaemonIsLinux)
defer unpauseAllContainers()
out, _ := dockerCmd(c, "run", "-d", "busybox", "sleep", "30")
ContainerID := strings.TrimSpace(out)
status, _, err := sockRequest("POST", "/containers/"+ContainerID+"/pause", nil)
c.Assert(err, check.IsNil)
c.Assert(status, check.Equals, http.StatusNoContent)
pausedContainers, err := getSliceOfPausedContainers()
if err != nil {
c.Fatalf("error thrown while checking if containers were paused: %v", err)
}
if len(pausedContainers) != 1 || stringid.TruncateID(ContainerID) != pausedContainers[0] {
c.Fatalf("there should be one paused container and not %d", len(pausedContainers))
}
status, _, err = sockRequest("POST", "/containers/"+ContainerID+"/unpause", nil)
c.Assert(err, check.IsNil)
c.Assert(status, check.Equals, http.StatusNoContent)
pausedContainers, err = getSliceOfPausedContainers()
if err != nil {
c.Fatalf("error thrown while checking if containers were paused: %v", err)
}
if pausedContainers != nil {
c.Fatalf("There should be no paused container.")
}
}
func (daemon *Daemon) checkImageDeleteSoftConflict(imgID image.ID) *imageDeleteConflict {
// Check if any repository tags/digest reference this image.
if len(daemon.referenceStore.References(imgID)) > 0 {
return &imageDeleteConflict{
imgID: imgID,
message: "image is referenced in one or more repositories",
}
}
// Check if any stopped containers reference this image.
for _, container := range daemon.List() {
if container.IsRunning() {
// Skip this as it was checked above in hard conflict conditions.
continue
}
if container.ImageID == imgID {
return &imageDeleteConflict{
imgID: imgID,
used: true,
message: fmt.Sprintf("image is being used by stopped container %s", stringid.TruncateID(container.ID)),
}
}
}
return nil
}
func (daemon *Daemon) checkImageDeleteHardConflict(imgID image.ID) *imageDeleteConflict {
// Check if the image has any descendent images.
if len(daemon.imageStore.Children(imgID)) > 0 {
return &imageDeleteConflict{
hard: true,
imgID: imgID,
message: "image has dependent child images",
}
}
// Check if any running container is using the image.
for _, container := range daemon.List() {
if !container.IsRunning() {
// Skip this until we check for soft conflicts later.
continue
}
if container.ImageID == imgID {
return &imageDeleteConflict{
imgID: imgID,
hard: true,
used: true,
message: fmt.Sprintf("image is being used by running container %s", stringid.TruncateID(container.ID)),
}
}
}
return nil
}
func (s *DockerSuite) TestCreateByImageID(c *check.C) {
imageName := "testcreatebyimageid"
imageID, err := buildImage(imageName,
`FROM busybox
MAINTAINER dockerio`,
true)
if err != nil {
c.Fatal(err)
}
truncatedImageID := stringid.TruncateID(imageID)
dockerCmd(c, "create", imageID)
dockerCmd(c, "create", truncatedImageID)
dockerCmd(c, "create", fmt.Sprintf("%s:%s", imageName, truncatedImageID))
// Ensure this fails
out, exit, _ := dockerCmdWithError("create", fmt.Sprintf("%s:%s", imageName, imageID))
if exit == 0 {
c.Fatalf("expected non-zero exit code; received %d", exit)
}
if expected := "Error parsing reference"; !strings.Contains(out, expected) {
c.Fatalf(`Expected %q in output; got: %s`, expected, out)
}
out, exit, _ = dockerCmdWithError("create", fmt.Sprintf("%s:%s", "wrongimage", truncatedImageID))
if exit == 0 {
c.Fatalf("expected non-zero exit code; received %d", exit)
}
if expected := "Unable to find image"; !strings.Contains(out, expected) {
c.Fatalf(`Expected %q in output; got: %s`, expected, out)
}
}
// shouldRestart checks the restart policy and applies the rules to determine if
// the container's process should be restarted
func (m *containerMonitor) shouldRestart(exitCode int) bool {
m.mux.Lock()
defer m.mux.Unlock()
// do not restart if the user or docker has requested that this container be stopped
if m.shouldStop {
m.container.HasBeenManuallyStopped = !m.supervisor.IsShuttingDown()
return false
}
switch {
case m.restartPolicy.IsAlways(), m.restartPolicy.IsUnlessStopped():
return true
case m.restartPolicy.IsOnFailure():
// the default value of 0 for MaximumRetryCount means that we will not enforce a maximum count
if max := m.restartPolicy.MaximumRetryCount; max != 0 && m.failureCount > max {
logrus.Debugf("stopping restart of container %s because maximum failure could of %d has been reached",
stringid.TruncateID(m.container.ID), max)
return false
}
return exitCode != 0
}
return false
}
// TempLayerArchive creates a temporary archive of the given image's filesystem layer.
// The archive is stored on disk and will be automatically deleted as soon as has been read.
// If output is not nil, a human-readable progress bar will be written to it.
func (graph *Graph) TempLayerArchive(id string, sf *streamformatter.StreamFormatter, output io.Writer) (*archive.TempArchive, error) {
image, err := graph.Get(id)
if err != nil {
return nil, err
}
tmp, err := graph.mktemp()
if err != nil {
return nil, err
}
defer os.RemoveAll(tmp)
a, err := graph.TarLayer(image)
if err != nil {
return nil, err
}
progressReader := progressreader.New(progressreader.Config{
In: a,
Out: output,
Formatter: sf,
Size: 0,
NewLines: false,
ID: stringid.TruncateID(id),
Action: "Buffering to disk",
})
defer progressReader.Close()
return archive.NewTempArchive(progressReader, tmp)
}
// GetImage returns a pointer to an Image structure describing the image
// referred to by refOrID inside repository repoName.
func (store *TagStore) GetImage(repoName, refOrID string) (*image.Image, error) {
repo, err := store.Get(repoName)
if err != nil {
return nil, err
}
if repo == nil {
return nil, nil
}
store.Lock()
defer store.Unlock()
if imgID, exists := repo[refOrID]; exists {
return store.graph.Get(imgID)
}
// If no matching tag is found, search through images for a matching image id
// iff it looks like a short ID or would look like a short ID
if stringid.IsShortID(stringid.TruncateID(refOrID)) {
for _, revision := range repo {
if strings.HasPrefix(revision, refOrID) {
return store.graph.Get(revision)
}
}
}
return nil, nil
}
func (daemon *Daemon) reserveName(id, name string) (string, error) {
if !validContainerNamePattern.MatchString(name) {
return "", fmt.Errorf("Invalid container name (%s), only %s are allowed", name, validContainerNameChars)
}
if name[0] != '/' {
name = "/" + name
}
if _, err := daemon.containerGraphDB.Set(name, id); err != nil {
if !graphdb.IsNonUniqueNameError(err) {
return "", err
}
conflictingContainer, err := daemon.GetByName(name)
if err != nil {
return "", err
}
return "", fmt.Errorf(
"Conflict. The name %q is already in use by container %s. You have to remove (or rename) that container to be able to reuse that name.", strings.TrimPrefix(name, "/"),
stringid.TruncateID(conflictingContainer.ID))
}
return name, nil
}
