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Add ability to refer to image by name + digest

Browse source 
Add ability to refer to an image by repository name and digest using the
format repository@digest. Works for pull, push, run, build, and rmi.

Signed-off-by: Andy Goldstein <agoldste@redhat.com>
This commit is contained in:
Andy Goldstein 2015-02-27 02:23:50 +00:00
parent ad56b5c603
commit a2b0c9778f
28 changed files with 987 additions and 118 deletions
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2
Dockerfile
View file

@ -108,7 +108,7 @@ RUN go get golang.org/x/tools/cmd/cover
RUN gem install --no-rdoc --no-ri fpm --version 1.3.2
# Install registry
ENV REGISTRY_COMMIT c448e0416925a9876d5576e412703c9b8b865e19
ENV REGISTRY_COMMIT b4cc5e3ecc2e9f4fa0e95d94c389e1d79e902486
RUN set -x \
&& git clone https://github.com/docker/distribution.git /go/src/github.com/docker/distribution \
&& (cd /go/src/github.com/docker/distribution && git checkout -q $REGISTRY_COMMIT) \

44
api/client/commands.go
View file

@ -1312,7 +1312,7 @@ func (cli *DockerCli) CmdPush(args ...string) error {
}
func (cli *DockerCli) CmdPull(args ...string) error {
cmd := cli.Subcmd("pull", "NAME[:TAG]", "Pull an image or a repository from the registry", true)
cmd := cli.Subcmd("pull", "NAME[:TAG|@DIGEST]", "Pull an image or a repository from the registry", true)
allTags := cmd.Bool([]string{"a", "-all-tags"}, false, "Download all tagged images in the repository")
cmd.Require(flag.Exact, 1)
@ -1325,7 +1325,7 @@ func (cli *DockerCli) CmdPull(args ...string) error {
)
taglessRemote, tag := parsers.ParseRepositoryTag(remote)
if tag == "" && !*allTags {
newRemote = taglessRemote + ":" + graph.DEFAULTTAG
newRemote = utils.ImageReference(taglessRemote, graph.DEFAULTTAG)
}
if tag != "" && *allTags {
return fmt.Errorf("tag can't be used with --all-tags/-a")
@ -1378,6 +1378,7 @@ func (cli *DockerCli) CmdImages(args ...string) error {
quiet := cmd.Bool([]string{"q", "-quiet"}, false, "Only show numeric IDs")
all := cmd.Bool([]string{"a", "-all"}, false, "Show all images (default hides intermediate images)")
noTrunc := cmd.Bool([]string{"#notrunc", "-no-trunc"}, false, "Don't truncate output")
showDigests := cmd.Bool([]string{"-digests"}, false, "Show digests")
// FIXME: --viz and --tree are deprecated. Remove them in a future version.
flViz := cmd.Bool([]string{"#v", "#viz", "#-viz"}, false, "Output graph in graphviz format")
flTree := cmd.Bool([]string{"#t", "#tree", "#-tree"}, false, "Output graph in tree format")
@ -1504,20 +1505,43 @@ func (cli *DockerCli) CmdImages(args ...string) error {
w := tabwriter.NewWriter(cli.out, 20, 1, 3, ' ', 0)
if !*quiet {
fmt.Fprintln(w, "REPOSITORY\tTAG\tIMAGE ID\tCREATED\tVIRTUAL SIZE")
if *showDigests {
fmt.Fprintln(w, "REPOSITORY\tTAG\tDIGEST\tIMAGE ID\tCREATED\tVIRTUAL SIZE")
} else {
fmt.Fprintln(w, "REPOSITORY\tTAG\tIMAGE ID\tCREATED\tVIRTUAL SIZE")
}
}
for _, out := range outs.Data {
for _, repotag := range out.GetList("RepoTags") {
outID := out.Get("Id")
if !*noTrunc {
outID = common.TruncateID(outID)
}
// Tags referring to this image ID.
for _, repotag := range out.GetList("RepoTags") {
repo, tag := parsers.ParseRepositoryTag(repotag)
outID := out.Get("Id")
if !*noTrunc {
outID = common.TruncateID(outID)
}
if !*quiet {
fmt.Fprintf(w, "%s\t%s\t%s\t%s ago\t%s\n", repo, tag, outID, units.HumanDuration(time.Now().UTC().Sub(time.Unix(out.GetInt64("Created"), 0))), units.HumanSize(float64(out.GetInt64("VirtualSize"))))
if *showDigests {
fmt.Fprintf(w, "%s\t%s\t%s\t%s\t%s ago\t%s\n", repo, tag, "<none>", outID, units.HumanDuration(time.Now().UTC().Sub(time.Unix(out.GetInt64("Created"), 0))), units.HumanSize(float64(out.GetInt64("VirtualSize"))))
} else {
fmt.Fprintf(w, "%s\t%s\t%s\t%s ago\t%s\n", repo, tag, outID, units.HumanDuration(time.Now().UTC().Sub(time.Unix(out.GetInt64("Created"), 0))), units.HumanSize(float64(out.GetInt64("VirtualSize"))))
}
} else {
fmt.Fprintln(w, outID)
}
}
// Digests referring to this image ID.
for _, repoDigest := range out.GetList("RepoDigests") {
repo, digest := parsers.ParseRepositoryTag(repoDigest)
if !*quiet {
if *showDigests {
fmt.Fprintf(w, "%s\t%s\t%s\t%s\t%s ago\t%s\n", repo, "<none>", digest, outID, units.HumanDuration(time.Now().UTC().Sub(time.Unix(out.GetInt64("Created"), 0))), units.HumanSize(float64(out.GetInt64("VirtualSize"))))
} else {
fmt.Fprintf(w, "%s\t%s\t%s\t%s ago\t%s\n", repo, "<none>", outID, units.HumanDuration(time.Now().UTC().Sub(time.Unix(out.GetInt64("Created"), 0))), units.HumanSize(float64(out.GetInt64("VirtualSize"))))
}
} else {
fmt.Fprintln(w, outID)
}
@ -2208,7 +2232,7 @@ func (cli *DockerCli) createContainer(config *runconfig.Config, hostConfig *runc
if tag == "" {
tag = graph.DEFAULTTAG
}
fmt.Fprintf(cli.err, "Unable to find image '%s:%s' locally\n", repo, tag)
fmt.Fprintf(cli.err, "Unable to find image '%s' locally\n", utils.ImageReference(repo, tag))
// we don't want to write to stdout anything apart from container.ID
if err = cli.pullImageCustomOut(config.Image, cli.err); err != nil {

5
daemon/image_delete.go
View file

@ -9,6 +9,7 @@ import (
"github.com/docker/docker/image"
"github.com/docker/docker/pkg/common"
"github.com/docker/docker/pkg/parsers"
"github.com/docker/docker/utils"
)
func (daemon *Daemon) ImageDelete(job *engine.Job) engine.Status {
@ -48,7 +49,7 @@ func (daemon *Daemon) DeleteImage(eng *engine.Engine, name string, imgs *engine.
img, err := daemon.Repositories().LookupImage(name)
if err != nil {
if r, _ := daemon.Repositories().Get(repoName); r != nil {
return fmt.Errorf("No such image: %s:%s", repoName, tag)
return fmt.Errorf("No such image: %s", utils.ImageReference(repoName, tag))
}
return fmt.Errorf("No such image: %s", name)
}
@ -102,7 +103,7 @@ func (daemon *Daemon) DeleteImage(eng *engine.Engine, name string, imgs *engine.
}
if tagDeleted {
out := &engine.Env{}
out.Set("Untagged", repoName+":"+tag)
out.Set("Untagged", utils.ImageReference(repoName, tag))
imgs.Add(out)
eng.Job("log", "untag", img.ID, "").Run()
}

3
daemon/list.go
View file

@ -8,6 +8,7 @@ import (
"github.com/docker/docker/graph"
"github.com/docker/docker/pkg/graphdb"
"github.com/docker/docker/utils"
"github.com/docker/docker/engine"
"github.com/docker/docker/pkg/parsers"
@ -131,7 +132,7 @@ func (daemon *Daemon) Containers(job *engine.Job) engine.Status {
img := container.Config.Image
_, tag := parsers.ParseRepositoryTag(container.Config.Image)
if tag == "" {
img = img + ":" + graph.DEFAULTTAG
img = utils.ImageReference(img, graph.DEFAULTTAG)
}
out.SetJson("Image", img)
if len(container.Args) > 0 {

4
docs/man/docker-images.1.md
View file

@ -8,6 +8,7 @@ docker-images - List images
**docker images**
[**--help**]
[**-a**|**--all**[=*false*]]
[**--digests**[=*false*]]
[**-f**|**--filter**[=*[]*]]
[**--no-trunc**[=*false*]]
[**-q**|**--quiet**[=*false*]]
@ -33,6 +34,9 @@ versions.
**-a**, **--all**=*true*|*false*
Show all images (by default filter out the intermediate image layers). The default is *false*.
**--digests**=*true*|*false*
Show image digests. The default is *false*.
**-f**, **--filter**=[]
Filters the output. The dangling=true filter finds unused images. While label=com.foo=amd64 filters for images with a com.foo value of amd64. The label=com.foo filter finds images with the label com.foo of any value.

4
docs/sources/reference/api/docker_remote_api.md
View file

@ -62,6 +62,10 @@ You can set ulimit settings to be used within the container.
**New!**
This endpoint now returns `SystemTime`, `HttpProxy`,`HttpsProxy` and `NoProxy`.
`GET /images/json`
**New!**
Added a `RepoDigests` field to include image digest information.
## v1.17

39
docs/sources/reference/api/docker_remote_api_v1.18.md
View file

@ -1054,6 +1054,45 @@ Status Codes:
}
]
**Example request, with digest information**:
GET /images/json?digests=1 HTTP/1.1
**Example response, with digest information**:
HTTP/1.1 200 OK
Content-Type: application/json
[
{
"Created": 1420064636,
"Id": "4986bf8c15363d1c5d15512d5266f8777bfba4974ac56e3270e7760f6f0a8125",
"ParentId": "ea13149945cb6b1e746bf28032f02e9b5a793523481a0a18645fc77ad53c4ea2",
"RepoDigests": [
"localhost:5000/test/busybox@sha256:cbbf2f9a99b47fc460d422812b6a5adff7dfee951d8fa2e4a98caa0382cfbdbf"
],
"RepoTags": [
"localhost:5000/test/busybox:latest",
"playdate:latest"
],
"Size": 0,
"VirtualSize": 2429728
}
]
The response shows a single image `Id` associated with two repositories
(`RepoTags`): `localhost:5000/test/busybox`: and `playdate`. A caller can use
either of the `RepoTags` values `localhost:5000/test/busybox:latest` or
`playdate:latest` to reference the image.
You can also use `RepoDigests` values to reference an image. In this response,
the array has only one reference and that is to the
`localhost:5000/test/busybox` repository; the `playdate` repository has no
digest. You can reference this digest using the value:
`localhost:5000/test/busybox@sha256:cbbf2f9a99b47fc460d...`
See the `docker run` and `docker build` commands for examples of digest and tag
references on the command line.
Query Parameters:

9
docs/sources/reference/builder.md
View file

@ -192,6 +192,10 @@ Or
FROM <image>:<tag>
Or
FROM <image>@<digest>
The `FROM` instruction sets the [*Base Image*](/terms/image/#base-image)
for subsequent instructions. As such, a valid `Dockerfile` must have `FROM` as
its first instruction. The image can be any valid image – it is especially easy
@ -204,8 +208,9 @@ to start by **pulling an image** from the [*Public Repositories*](
multiple images. Simply make a note of the last image ID output by the commit
before each new `FROM` command.
If no `tag` is given to the `FROM` instruction, `latest` is assumed. If the
used tag does not exist, an error will be returned.
The `tag` or `digest` values are optional. If you omit either of them, the builder
assumes a `latest` by default. The builder returns an error if it cannot match
the `tag` value.
## MAINTAINER

42
docs/sources/reference/commandline/cli.md
View file

@ -1112,7 +1112,9 @@ To see how the `docker:latest` image was built:
List images
-a, --all=false Show all images (default hides intermediate images)
--digests=false Show digests
-f, --filter=[] Filter output based on conditions provided
--help=false Print usage
--no-trunc=false Don't truncate output
-q, --quiet=false Only show numeric IDs
@ -1161,6 +1163,22 @@ uses up the `VIRTUAL SIZE` listed only once.
tryout latest 2629d1fa0b81b222fca63371ca16cbf6a0772d07759ff80e8d1369b926940074 23 hours ago 131.5 MB
<none> <none> 5ed6274db6ceb2397844896966ea239290555e74ef307030ebb01ff91b1914df 24 hours ago 1.089 GB
#### Listing image digests
Images that use the v2 or later format have a content-addressable identifier
called a `digest`. As long as the input used to generate the image is
unchanged, the digest value is predictable. To list image digest values, use
the `--digests` flag:
$ sudo docker images --digests | head
REPOSITORY TAG DIGEST IMAGE ID CREATED VIRTUAL SIZE
localhost:5000/test/busybox <none> sha256:cbbf2f9a99b47fc460d422812b6a5adff7dfee951d8fa2e4a98caa0382cfbdbf 4986bf8c1536 9 weeks ago 2.43 MB
When pushing or pulling to a 2.0 registry, the `push` or `pull` command
output includes the image digest. You can `pull` using a digest value. You can
also reference by digest in `create`, `run`, and `rmi` commands, as well as the
`FROM` image reference in a Dockerfile.
#### Filtering
The filtering flag (`-f` or `--filter`) format is of "key=value". If there is more
@ -1563,6 +1581,10 @@ use `docker pull`:
$ sudo docker pull debian:testing
# will pull the image named debian:testing and any intermediate
# layers it is based on.
$ sudo docker pull debian@sha256:cbbf2f9a99b47fc460d422812b6a5adff7dfee951d8fa2e4a98caa0382cfbdbf
# will pull the image from the debian repository with the digest
# sha256:cbbf2f9a99b47fc460d422812b6a5adff7dfee951d8fa2e4a98caa0382cfbdbf
# and any intermediate layers it is based on.
# (Typically the empty `scratch` image, a MAINTAINER layer,
# and the un-tarred base).
$ sudo docker pull --all-tags centos
@ -1634,9 +1656,9 @@ deleted.
#### Removing tagged images
Images can be removed either by their short or long IDs, or their image
names. If an image has more than one name, each of them needs to be
removed before the image is removed.
You can remove an image using its short or long ID, its tag, or its digest. If
an image has one or more tag or digest reference, you must remove all of them
before the image is removed.
$ sudo docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
@ -1660,6 +1682,20 @@ removed before the image is removed.
Untagged: test:latest
Deleted: fd484f19954f4920da7ff372b5067f5b7ddb2fd3830cecd17b96ea9e286ba5b8
An image pulled by digest has no tag associated with it:
$ sudo docker images --digests
REPOSITORY TAG DIGEST IMAGE ID CREATED VIRTUAL SIZE
localhost:5000/test/busybox <none> sha256:cbbf2f9a99b47fc460d422812b6a5adff7dfee951d8fa2e4a98caa0382cfbdbf 4986bf8c1536 9 weeks ago 2.43 MB
To remove an image using its digest:
$ sudo docker rmi localhost:5000/test/busybox@sha256:cbbf2f9a99b47fc460d422812b6a5adff7dfee951d8fa2e4a98caa0382cfbdbf
Untagged: localhost:5000/test/busybox@sha256:cbbf2f9a99b47fc460d422812b6a5adff7dfee951d8fa2e4a98caa0382cfbdbf
Deleted: 4986bf8c15363d1c5d15512d5266f8777bfba4974ac56e3270e7760f6f0a8125
Deleted: ea13149945cb6b1e746bf28032f02e9b5a793523481a0a18645fc77ad53c4ea2
Deleted: df7546f9f060a2268024c8a230d8639878585defcc1bc6f79d2728a13957871b
## run
Usage: docker run [OPTIONS] IMAGE [COMMAND] [ARG...]

10
docs/sources/reference/run.md
View file

@ -24,7 +24,7 @@ other `docker` command.
The basic `docker run` command takes this form:
$ sudo docker run [OPTIONS] IMAGE[:TAG] [COMMAND] [ARG...]
$ sudo docker run [OPTIONS] IMAGE[:TAG|@DIGEST] [COMMAND] [ARG...]
To learn how to interpret the types of `[OPTIONS]`,
see [*Option types*](/reference/commandline/cli/#option-types).
@ -140,6 +140,12 @@ While not strictly a means of identifying a container, you can specify a version
image you'd like to run the container with by adding `image[:tag]` to the command. For
example, `docker run ubuntu:14.04`.
### Image[@digest]
Images using the v2 or later image format have a content-addressable identifier
called a digest. As long as the input used to generate the image is unchanged,
the digest value is predictable and referenceable.
## PID Settings (--pid)
--pid="" : Set the PID (Process) Namespace mode for the container,
'host': use the host's PID namespace inside the container
@ -661,7 +667,7 @@ Dockerfile instruction and how the operator can override that setting.
Recall the optional `COMMAND` in the Docker
commandline:
$ sudo docker run [OPTIONS] IMAGE[:TAG] [COMMAND] [ARG...]
$ sudo docker run [OPTIONS] IMAGE[:TAG|@DIGEST] [COMMAND] [ARG...]
This command is optional because the person who created the `IMAGE` may
have already provided a default `COMMAND` using the Dockerfile `CMD`

3
graph/history.go
View file

@ -5,6 +5,7 @@ import (
"github.com/docker/docker/engine"
"github.com/docker/docker/image"
"github.com/docker/docker/utils"
)
func (s *TagStore) CmdHistory(job *engine.Job) engine.Status {
@ -24,7 +25,7 @@ func (s *TagStore) CmdHistory(job *engine.Job) engine.Status {
if _, exists := lookupMap[id]; !exists {
lookupMap[id] = []string{}
}
lookupMap[id] = append(lookupMap[id], name+":"+tag)
lookupMap[id] = append(lookupMap[id], utils.ImageReference(name, tag))
}
}

2
graph/import.go
View file

@ -88,7 +88,7 @@ func (s *TagStore) CmdImport(job *engine.Job) engine.Status {
job.Stdout.Write(sf.FormatStatus("", img.ID))
logID := img.ID
if tag != "" {
logID += ":" + tag
logID = utils.ImageReference(logID, tag)
}
if err = job.Eng.Job("log", "import", logID, "").Run(); err != nil {
log.Errorf("Error logging event 'import' for %s: %s", logID, err)

28
graph/list.go
View file

@ -1,7 +1,6 @@
package graph
import (
"fmt"
"log"
"path"
"strings"
@ -9,6 +8,7 @@ import (
"github.com/docker/docker/engine"
"github.com/docker/docker/image"
"github.com/docker/docker/pkg/parsers/filters"
"github.com/docker/docker/utils"
)
var acceptedImageFilterTags = map[string]struct{}{
@ -54,22 +54,27 @@ func (s *TagStore) CmdImages(job *engine.Job) engine.Status {
}
lookup := make(map[string]*engine.Env)
s.Lock()
for name, repository := range s.Repositories {
for repoName, repository := range s.Repositories {
if job.Getenv("filter") != "" {
if match, _ := path.Match(job.Getenv("filter"), name); !match {
if match, _ := path.Match(job.Getenv("filter"), repoName); !match {
continue
}
}
for tag, id := range repository {
for ref, id := range repository {
imgRef := utils.ImageReference(repoName, ref)
image, err := s.graph.Get(id)
if err != nil {
log.Printf("Warning: couldn't load %s from %s/%s: %s", id, name, tag, err)
log.Printf("Warning: couldn't load %s from %s: %s", id, imgRef, err)
continue
}
if out, exists := lookup[id]; exists {
if filt_tagged {
out.SetList("RepoTags", append(out.GetList("RepoTags"), fmt.Sprintf("%s:%s", name, tag)))
if utils.DigestReference(ref) {
out.SetList("RepoDigests", append(out.GetList("RepoDigests"), imgRef))
} else { // Tag Ref.
out.SetList("RepoTags", append(out.GetList("RepoTags"), imgRef))
}
}
} else {
// get the boolean list for if only the untagged images are requested
@ -80,12 +85,20 @@ func (s *TagStore) CmdImages(job *engine.Job) engine.Status {
if filt_tagged {
out := &engine.Env{}
out.SetJson("ParentId", image.Parent)
out.SetList("RepoTags", []string{fmt.Sprintf("%s:%s", name, tag)})
out.SetJson("Id", image.ID)
out.SetInt64("Created", image.Created.Unix())
out.SetInt64("Size", image.Size)
out.SetInt64("VirtualSize", image.GetParentsSize(0)+image.Size)
out.SetJson("Labels", image.ContainerConfig.Labels)
if utils.DigestReference(ref) {
out.SetList("RepoTags", []string{})
out.SetList("RepoDigests", []string{imgRef})
} else {
out.SetList("RepoTags", []string{imgRef})
out.SetList("RepoDigests", []string{})
}
lookup[id] = out
}
}
@ -108,6 +121,7 @@ func (s *TagStore) CmdImages(job *engine.Job) engine.Status {
out := &engine.Env{}
out.SetJson("ParentId", image.Parent)
out.SetList("RepoTags", []string{"<none>:<none>"})
out.SetList("RepoDigests", []string{"<none>@<none>"})
out.SetJson("Id", image.ID)
out.SetInt64("Created", image.Created.Unix())
out.SetInt64("Size", image.Size)

35
graph/pull.go
View file

@ -22,7 +22,7 @@ import (
func (s *TagStore) CmdPull(job *engine.Job) engine.Status {
if n := len(job.Args); n != 1 && n != 2 {
return job.Errorf("Usage: %s IMAGE [TAG]", job.Name)
return job.Errorf("Usage: %s IMAGE [TAG|DIGEST]", job.Name)
}
var (
@ -46,7 +46,7 @@ func (s *TagStore) CmdPull(job *engine.Job) engine.Status {
job.GetenvJson("authConfig", authConfig)
job.GetenvJson("metaHeaders", &metaHeaders)
c, err := s.poolAdd("pull", repoInfo.LocalName+":"+tag)
c, err := s.poolAdd("pull", utils.ImageReference(repoInfo.LocalName, tag))
if err != nil {
if c != nil {
// Another pull of the same repository is already taking place; just wait for it to finish
@ -56,7 +56,7 @@ func (s *TagStore) CmdPull(job *engine.Job) engine.Status {
}
return job.Error(err)
}
defer s.poolRemove("pull", repoInfo.LocalName+":"+tag)
defer s.poolRemove("pull", utils.ImageReference(repoInfo.LocalName, tag))
log.Debugf("pulling image from host %q with remote name %q", repoInfo.Index.Name, repoInfo.RemoteName)
endpoint, err := repoInfo.GetEndpoint()
@ -71,7 +71,7 @@ func (s *TagStore) CmdPull(job *engine.Job) engine.Status {
logName := repoInfo.LocalName
if tag != "" {
logName += ":" + tag
logName = utils.ImageReference(logName, tag)
}
if len(repoInfo.Index.Mirrors) == 0 && ((repoInfo.Official && repoInfo.Index.Official) || endpoint.Version == registry.APIVersion2) {
@ -113,7 +113,7 @@ func (s *TagStore) pullRepository(r *registry.Session, out io.Writer, repoInfo *
repoData, err := r.GetRepositoryData(repoInfo.RemoteName)
if err != nil {
if strings.Contains(err.Error(), "HTTP code: 404") {
return fmt.Errorf("Error: image %s:%s not found", repoInfo.RemoteName, askedTag)
return fmt.Errorf("Error: image %s not found", utils.ImageReference(repoInfo.RemoteName, askedTag))
}
// Unexpected HTTP error
return err
@ -259,7 +259,7 @@ func (s *TagStore) pullRepository(r *registry.Session, out io.Writer, repoInfo *
requestedTag := repoInfo.CanonicalName
if len(askedTag) > 0 {
requestedTag = repoInfo.CanonicalName + ":" + askedTag
requestedTag = utils.ImageReference(repoInfo.CanonicalName, askedTag)
}
WriteStatus(requestedTag, out, sf, layers_downloaded)
return nil
@ -421,7 +421,7 @@ func (s *TagStore) pullV2Repository(eng *engine.Engine, r *registry.Session, out
requestedTag := repoInfo.CanonicalName
if len(tag) > 0 {
requestedTag = repoInfo.CanonicalName + ":" + tag
requestedTag = utils.ImageReference(repoInfo.CanonicalName, tag)
}
WriteStatus(requestedTag, out, sf, layersDownloaded)
return nil
@ -429,7 +429,7 @@ func (s *TagStore) pullV2Repository(eng *engine.Engine, r *registry.Session, out
func (s *TagStore) pullV2Tag(eng *engine.Engine, r *registry.Session, out io.Writer, endpoint *registry.Endpoint, repoInfo *registry.RepositoryInfo, tag string, sf *utils.StreamFormatter, parallel bool, auth *registry.RequestAuthorization) (bool, error) {
log.Debugf("Pulling tag from V2 registry: %q", tag)
manifestBytes, err := r.GetV2ImageManifest(endpoint, repoInfo.RemoteName, tag, auth)
manifestBytes, digest, err := r.GetV2ImageManifest(endpoint, repoInfo.RemoteName, tag, auth)
if err != nil {
return false, err
}
@ -444,7 +444,7 @@ func (s *TagStore) pullV2Tag(eng *engine.Engine, r *registry.Session, out io.Wri
}
if verified {
log.Printf("Image manifest for %s:%s has been verified", repoInfo.CanonicalName, tag)
log.Printf("Image manifest for %s has been verified", utils.ImageReference(repoInfo.CanonicalName, tag))
}
out.Write(sf.FormatStatus(tag, "Pulling from %s", repoInfo.CanonicalName))
@ -601,11 +601,22 @@ func (s *TagStore) pullV2Tag(eng *engine.Engine, r *registry.Session, out io.Wri
}
if verified && tagUpdated {
out.Write(sf.FormatStatus(repoInfo.CanonicalName+":"+tag, "The image you are pulling has been verified. Important: image verification is a tech preview feature and should not be relied on to provide security."))
out.Write(sf.FormatStatus(utils.ImageReference(repoInfo.CanonicalName, tag), "The image you are pulling has been verified. Important: image verification is a tech preview feature and should not be relied on to provide security."))
}
if err = s.Set(repoInfo.LocalName, tag, downloads[0].img.ID, true); err != nil {
return false, err
if len(digest) > 0 {
out.Write(sf.FormatStatus("", "Digest: %s", digest))
}
if utils.DigestReference(tag) {
if err = s.SetDigest(repoInfo.LocalName, tag, downloads[0].img.ID); err != nil {
return false, err
}
} else {
// only set the repository/tag -> image ID mapping when pulling by tag (i.e. not by digest)
if err = s.Set(repoInfo.LocalName, tag, downloads[0].img.ID, true); err != nil {
return false, err
}
}
return tagUpdated, nil

20
graph/push.go
View file

@ -36,8 +36,15 @@ func (s *TagStore) getImageList(localRepo map[string]string, requestedTag string
for tag, id := range localRepo {
if requestedTag != "" && requestedTag != tag {
// Include only the requested tag.
continue
}
if utils.DigestReference(tag) {
// Ignore digest references.
continue
}
var imageListForThisTag []string
tagsByImage[id] = append(tagsByImage[id], tag)
@ -76,14 +83,16 @@ func (s *TagStore) getImageList(localRepo map[string]string, requestedTag string
func (s *TagStore) getImageTags(localRepo map[string]string, askedTag string) ([]string, error) {
log.Debugf("Checking %s against %#v", askedTag, localRepo)
if len(askedTag) > 0 {
if _, ok := localRepo[askedTag]; !ok {
if _, ok := localRepo[askedTag]; !ok || utils.DigestReference(askedTag) {
return nil, fmt.Errorf("Tag does not exist: %s", askedTag)
}
return []string{askedTag}, nil
}
var tags []string
for tag := range localRepo {
tags = append(tags, tag)
if !utils.DigestReference(tag) {
tags = append(tags, tag)
}
}
return tags, nil
}
@ -422,9 +431,14 @@ func (s *TagStore) pushV2Repository(r *registry.Session, localRepo Repository, o
log.Infof("Signed manifest for %s:%s using daemon's key: %s", repoInfo.LocalName, tag, s.trustKey.KeyID())
// push the manifest
if err := r.PutV2ImageManifest(endpoint, repoInfo.RemoteName, tag, bytes.NewReader(signedBody), auth); err != nil {
digest, err := r.PutV2ImageManifest(endpoint, repoInfo.RemoteName, tag, bytes.NewReader(signedBody), auth)
if err != nil {
return err
}
if len(digest) > 0 {
out.Write(sf.FormatStatus("", "Digest: %s", digest))
}
}
return nil
}

143
graph/tags.go
View file

@ -2,6 +2,7 @@ package graph
import (
"encoding/json"
"errors"
"fmt"
"io/ioutil"
"os"
@ -15,13 +16,16 @@ import (
"github.com/docker/docker/pkg/common"
"github.com/docker/docker/pkg/parsers"
"github.com/docker/docker/registry"
"github.com/docker/docker/utils"
"github.com/docker/libtrust"
)
const DEFAULTTAG = "latest"
var (
//FIXME these 2 regexes also exist in registry/v2/regexp.go
validTagName = regexp.MustCompile(`^[\w][\w.-]{0,127}$`)
validDigest = regexp.MustCompile(`[a-zA-Z0-9-_+.]+:[a-fA-F0-9]+`)
)
type TagStore struct {
@ -107,20 +111,31 @@ func (store *TagStore) reload() error {
func (store *TagStore) LookupImage(name string) (*image.Image, error) {
// FIXME: standardize on returning nil when the image doesn't exist, and err for everything else
// (so we can pass all errors here)
repos, tag := parsers.ParseRepositoryTag(name)
if tag == "" {
tag = DEFAULTTAG
repoName, ref := parsers.ParseRepositoryTag(name)
if ref == "" {
ref = DEFAULTTAG
}
img, err := store.GetImage(repos, tag)
store.Lock()
defer store.Unlock()
var (
err error
img *image.Image
)
img, err = store.GetImage(repoName, ref)
if err != nil {
return nil, err
} else if img == nil {
if img, err = store.graph.Get(name); err != nil {
return nil, err
}
}
if img != nil {
return img, err
}
// name must be an image ID.
store.Lock()
defer store.Unlock()
if img, err = store.graph.Get(name); err != nil {
return nil, err
}
return img, nil
}
@ -132,7 +147,7 @@ func (store *TagStore) ByID() map[string][]string {
byID := make(map[string][]string)
for repoName, repository := range store.Repositories {
for tag, id := range repository {
name := repoName + ":" + tag
name := utils.ImageReference(repoName, tag)
if _, exists := byID[id]; !exists {
byID[id] = []string{name}
} else {
@ -171,32 +186,35 @@ func (store *TagStore) DeleteAll(id string) error {
return nil
}
func (store *TagStore) Delete(repoName, tag string) (bool, error) {
func (store *TagStore) Delete(repoName, ref string) (bool, error) {
store.Lock()
defer store.Unlock()
deleted := false
if err := store.reload(); err != nil {
return false, err
}
repoName = registry.NormalizeLocalName(repoName)
if r, exists := store.Repositories[repoName]; exists {
if tag != "" {
if _, exists2 := r[tag]; exists2 {
delete(r, tag)
if len(r) == 0 {
delete(store.Repositories, repoName)
}
deleted = true
} else {
return false, fmt.Errorf("No such tag: %s:%s", repoName, tag)
}
} else {
delete(store.Repositories, repoName)
deleted = true
}
} else {
if ref == "" {
// Delete the whole repository.
delete(store.Repositories, repoName)
return true, store.save()
}
repoRefs, exists := store.Repositories[repoName]
if !exists {
return false, fmt.Errorf("No such repository: %s", repoName)
}
if _, exists := repoRefs[ref]; exists {
delete(repoRefs, ref)
if len(repoRefs) == 0 {
delete(store.Repositories, repoName)
}
deleted = true
}
return deleted, store.save()
}
@ -234,6 +252,40 @@ func (store *TagStore) Set(repoName, tag, imageName string, force bool) error {
return store.save()
}
// SetDigest creates a digest reference to an image ID.
func (store *TagStore) SetDigest(repoName, digest, imageName string) error {
img, err := store.LookupImage(imageName)
if err != nil {
return err
}
if err := validateRepoName(repoName); err != nil {
return err
}
if err := validateDigest(digest); err != nil {
return err
}
store.Lock()
defer store.Unlock()
if err := store.reload(); err != nil {
return err
}
repoName = registry.NormalizeLocalName(repoName)
repoRefs, exists := store.Repositories[repoName]
if !exists {
repoRefs = Repository{}
store.Repositories[repoName] = repoRefs
} else if oldID, exists := repoRefs[digest]; exists && oldID != img.ID {
return fmt.Errorf("Conflict: Digest %s is already set to image %s", digest, oldID)
}
repoRefs[digest] = img.ID
return store.save()
}
func (store *TagStore) Get(repoName string) (Repository, error) {
store.Lock()
defer store.Unlock()
@ -247,24 +299,29 @@ func (store *TagStore) Get(repoName string) (Repository, error) {
return nil, nil
}
func (store *TagStore) GetImage(repoName, tagOrID string) (*image.Image, error) {
func (store *TagStore) GetImage(repoName, refOrID string) (*image.Image, error) {
repo, err := store.Get(repoName)
store.Lock()
defer store.Unlock()
if err != nil {
return nil, err
} else if repo == nil {
}
if repo == nil {
return nil, nil
}
if revision, exists := repo[tagOrID]; exists {
return store.graph.Get(revision)
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
for _, revision := range repo {
if strings.HasPrefix(revision, tagOrID) {
if strings.HasPrefix(revision, refOrID) {
return store.graph.Get(revision)
}
}
return nil, nil
}
@ -275,7 +332,7 @@ func (store *TagStore) GetRepoRefs() map[string][]string {
for name, repository := range store.Repositories {
for tag, id := range repository {
shortID := common.TruncateID(id)
reporefs[shortID] = append(reporefs[shortID], fmt.Sprintf("%s:%s", name, tag))
reporefs[shortID] = append(reporefs[shortID], utils.ImageReference(name, tag))
}
}
store.Unlock()
@ -293,10 +350,10 @@ func validateRepoName(name string) error {
return nil
}
// Validate the name of a tag
// ValidateTagName validates the name of a tag
func ValidateTagName(name string) error {
if name == "" {
return fmt.Errorf("Tag name can't be empty")
return fmt.Errorf("tag name can't be empty")
}
if !validTagName.MatchString(name) {
return fmt.Errorf("Illegal tag name (%s): only [A-Za-z0-9_.-] are allowed, minimum 1, maximum 128 in length", name)
@ -304,6 +361,16 @@ func ValidateTagName(name string) error {
return nil
}
func validateDigest(dgst string) error {
if dgst == "" {
return errors.New("digest can't be empty")
}
if !validDigest.MatchString(dgst) {
return fmt.Errorf("illegal digest (%s): must be of the form [a-zA-Z0-9-_+.]+:[a-fA-F0-9]+", dgst)
}
return nil
}
func (store *TagStore) poolAdd(kind, key string) (chan struct{}, error) {
store.Lock()
defer store.Unlock()

40
graph/tags_unit_test.go
View file

@ -21,6 +21,8 @@ const (
testPrivateImageName = "127.0.0.1:8000/privateapp"
testPrivateImageID = "5bc255f8699e4ee89ac4469266c3d11515da88fdcbde45d7b069b636ff4efd81"
testPrivateImageIDShort = "5bc255f8699e"
testPrivateImageDigest = "sha256:bc8813ea7b3603864987522f02a76101c17ad122e1c46d790efc0fca78ca7bfb"
testPrivateImageTag = "sometag"
)
func fakeTar() (io.Reader, error) {
@ -83,6 +85,9 @@ func mkTestTagStore(root string, t *testing.T) *TagStore {
if err := store.Set(testPrivateImageName, "", testPrivateImageID, false); err != nil {
t.Fatal(err)
}
if err := store.SetDigest(testPrivateImageName, testPrivateImageDigest, testPrivateImageID); err != nil {
t.Fatal(err)
}
return store
}
@ -128,6 +133,10 @@ func TestLookupImage(t *testing.T) {
"fail:fail",
}
digestLookups := []string{
testPrivateImageName + "@" + testPrivateImageDigest,
}
for _, name := range officialLookups {
if img, err := store.LookupImage(name); err != nil {
t.Errorf("Error looking up %s: %s", name, err)
@ -155,6 +164,16 @@ func TestLookupImage(t *testing.T) {
t.Errorf("Expected 0 image, 1 found: %s", name)
}
}
for _, name := range digestLookups {
if img, err := store.LookupImage(name); err != nil {
t.Errorf("Error looking up %s: %s", name, err)
} else if img == nil {
t.Errorf("Expected 1 image, none found: %s", name)
} else if img.ID != testPrivateImageID {
t.Errorf("Expected ID '%s' found '%s'", testPrivateImageID, img.ID)
}
}
}
func TestValidTagName(t *testing.T) {
@ -174,3 +193,24 @@ func TestInvalidTagName(t *testing.T) {
}
}
}
func TestValidateDigest(t *testing.T) {
tests := []struct {
input string
expectError bool
}{
{"", true},
{"latest", true},
{"a:b", false},
{"aZ0124-.+:bY852-_.+=", false},
{"#$%#$^:$%^#$%", true},
}
for i, test := range tests {
err := validateDigest(test.input)
gotError := err != nil
if e, a := test.expectError, gotError; e != a {
t.Errorf("%d: with input %s, expected error=%t, got %t: %s", i, test.input, test.expectError, gotError, err)
}
}
}

535
integration-cli/docker_cli_by_digest_test.go Normal file
View file

@ -0,0 +1,535 @@
package main
import (
"fmt"
"os/exec"
"regexp"
"strings"
"testing"
"github.com/docker/docker/utils"
)
var (
repoName = fmt.Sprintf("%v/dockercli/busybox-by-dgst", privateRegistryURL)
digestRegex = regexp.MustCompile("Digest: ([^\n]+)")
)
func setupImage() (string, error) {
return setupImageWithTag("latest")
}
func setupImageWithTag(tag string) (string, error) {
containerName := "busyboxbydigest"
c := exec.Command(dockerBinary, "run", "-d", "-e", "digest=1", "--name", containerName, "busybox")
if _, err := runCommand(c); err != nil {
return "", err
}
// tag the image to upload it to the private registry
repoAndTag := utils.ImageReference(repoName, tag)
c = exec.Command(dockerBinary, "commit", containerName, repoAndTag)
if out, _, err := runCommandWithOutput(c); err != nil {
return "", fmt.Errorf("image tagging failed: %s, %v", out, err)
}
defer deleteImages(repoAndTag)
// delete the container as we don't need it any more
if err := deleteContainer(containerName); err != nil {
return "", err
}
// push the image
c = exec.Command(dockerBinary, "push", repoAndTag)
out, _, err := runCommandWithOutput(c)
if err != nil {
return "", fmt.Errorf("pushing the image to the private registry has failed: %s, %v", out, err)
}
// delete our local repo that we previously tagged
c = exec.Command(dockerBinary, "rmi", repoAndTag)
if out, _, err := runCommandWithOutput(c); err != nil {
return "", fmt.Errorf("error deleting images prior to real test: %s, %v", out, err)
}
// the push output includes "Digest: <digest>", so find that
matches := digestRegex.FindStringSubmatch(out)
if len(matches) != 2 {
return "", fmt.Errorf("unable to parse digest from push output: %s", out)
}
pushDigest := matches[1]
return pushDigest, nil
}
func TestPullByTagDisplaysDigest(t *testing.T) {
defer setupRegistry(t)()
pushDigest, err := setupImage()
if err != nil {
t.Fatalf("error setting up image: %v", err)
}
// pull from the registry using the tag
c := exec.Command(dockerBinary, "pull", repoName)
out, _, err := runCommandWithOutput(c)
if err != nil {
t.Fatalf("error pulling by tag: %s, %v", out, err)
}
defer deleteImages(repoName)
// the pull output includes "Digest: <digest>", so find that
matches := digestRegex.FindStringSubmatch(out)
if len(matches) != 2 {
t.Fatalf("unable to parse digest from pull output: %s", out)
}
pullDigest := matches[1]
// make sure the pushed and pull digests match
if pushDigest != pullDigest {
t.Fatalf("push digest %q didn't match pull digest %q", pushDigest, pullDigest)
}
logDone("by_digest - pull by tag displays digest")
}
func TestPullByDigest(t *testing.T) {
defer setupRegistry(t)()
pushDigest, err := setupImage()
if err != nil {
t.Fatalf("error setting up image: %v", err)
}
// pull from the registry using the <name>@<digest> reference
imageReference := fmt.Sprintf("%s@%s", repoName, pushDigest)
c := exec.Command(dockerBinary, "pull", imageReference)
out, _, err := runCommandWithOutput(c)
if err != nil {
t.Fatalf("error pulling by digest: %s, %v", out, err)
}
defer deleteImages(imageReference)
// the pull output includes "Digest: <digest>", so find that
matches := digestRegex.FindStringSubmatch(out)
if len(matches) != 2 {
t.Fatalf("unable to parse digest from pull output: %s", out)
}
pullDigest := matches[1]
// make sure the pushed and pull digests match
if pushDigest != pullDigest {
t.Fatalf("push digest %q didn't match pull digest %q", pushDigest, pullDigest)
}
logDone("by_digest - pull by digest")
}
func TestCreateByDigest(t *testing.T) {
defer setupRegistry(t)()
pushDigest, err := setupImage()
if err != nil {
t.Fatalf("error setting up image: %v", err)
}
imageReference := fmt.Sprintf("%s@%s", repoName, pushDigest)
containerName := "createByDigest"
c := exec.Command(dockerBinary, "create", "--name", containerName, imageReference)
out, _, err := runCommandWithOutput(c)
if err != nil {
t.Fatalf("error creating by digest: %s, %v", out, err)
}
defer deleteContainer(containerName)
res, err := inspectField(containerName, "Config.Image")
if err != nil {
t.Fatalf("failed to get Config.Image: %s, %v", out, err)
}
if res != imageReference {
t.Fatalf("unexpected Config.Image: %s (expected %s)", res, imageReference)
}
logDone("by_digest - create by digest")
}
func TestRunByDigest(t *testing.T) {
defer setupRegistry(t)()
pushDigest, err := setupImage()
if err != nil {
t.Fatalf("error setting up image: %v", err)
}
imageReference := fmt.Sprintf("%s@%s", repoName, pushDigest)
containerName := "runByDigest"
c := exec.Command(dockerBinary, "run", "--name", containerName, imageReference, "sh", "-c", "echo found=$digest")
out, _, err := runCommandWithOutput(c)
if err != nil {
t.Fatalf("error run by digest: %s, %v", out, err)
}
defer deleteContainer(containerName)
foundRegex := regexp.MustCompile("found=([^\n]+)")
matches := foundRegex.FindStringSubmatch(out)
if len(matches) != 2 {
t.Fatalf("error locating expected 'found=1' output: %s", out)
}
if matches[1] != "1" {
t.Fatalf("Expected %q, got %q", "1", matches[1])
}
res, err := inspectField(containerName, "Config.Image")
if err != nil {
t.Fatalf("failed to get Config.Image: %s, %v", out, err)
}
if res != imageReference {
t.Fatalf("unexpected Config.Image: %s (expected %s)", res, imageReference)
}
logDone("by_digest - run by digest")
}
func TestRemoveImageByDigest(t *testing.T) {
defer setupRegistry(t)()
digest, err := setupImage()
if err != nil {
t.Fatalf("error setting up image: %v", err)
}
imageReference := fmt.Sprintf("%s@%s", repoName, digest)
// pull from the registry using the <name>@<digest> reference
c := exec.Command(dockerBinary, "pull", imageReference)
out, _, err := runCommandWithOutput(c)
if err != nil {
t.Fatalf("error pulling by digest: %s, %v", out, err)
}
// make sure inspect runs ok
if _, err := inspectField(imageReference, "Id"); err != nil {
t.Fatalf("failed to inspect image: %v", err)
}
// do the delete
if err := deleteImages(imageReference); err != nil {
t.Fatalf("unexpected error deleting image: %v", err)
}
// try to inspect again - it should error this time
if _, err := inspectField(imageReference, "Id"); err == nil {
t.Fatalf("unexpected nil err trying to inspect what should be a non-existent image")
} else if !strings.Contains(err.Error(), "No such image") {
t.Fatalf("expected 'No such image' output, got %v", err)
}
logDone("by_digest - remove image by digest")
}
func TestBuildByDigest(t *testing.T) {
defer setupRegistry(t)()
digest, err := setupImage()
if err != nil {
t.Fatalf("error setting up image: %v", err)
}
imageReference := fmt.Sprintf("%s@%s", repoName, digest)
// pull from the registry using the <name>@<digest> reference
c := exec.Command(dockerBinary, "pull", imageReference)
out, _, err := runCommandWithOutput(c)
if err != nil {
t.Fatalf("error pulling by digest: %s, %v", out, err)
}
// get the image id
imageID, err := inspectField(imageReference, "Id")
if err != nil {
t.Fatalf("error getting image id: %v", err)
}
// do the build
name := "buildbydigest"
defer deleteImages(name)
_, err = buildImage(name, fmt.Sprintf(
`FROM %s
CMD ["/bin/echo", "Hello World"]`, imageReference),
true)
if err != nil {
t.Fatal(err)
}
// get the build's image id
res, err := inspectField(name, "Config.Image")
if err != nil {
t.Fatal(err)
}
// make sure they match
if res != imageID {
t.Fatalf("Image %s, expected %s", res, imageID)
}
logDone("by_digest - build by digest")
}
func TestTagByDigest(t *testing.T) {
defer setupRegistry(t)()
digest, err := setupImage()
if err != nil {
t.Fatalf("error setting up image: %v", err)
}
imageReference := fmt.Sprintf("%s@%s", repoName, digest)
// pull from the registry using the <name>@<digest> reference
c := exec.Command(dockerBinary, "pull", imageReference)
out, _, err := runCommandWithOutput(c)
if err != nil {
t.Fatalf("error pulling by digest: %s, %v", out, err)
}
// tag it
tag := "tagbydigest"
c = exec.Command(dockerBinary, "tag", imageReference, tag)
if _, err := runCommand(c); err != nil {
t.Fatalf("unexpected error tagging: %v", err)
}
expectedID, err := inspectField(imageReference, "Id")
if err != nil {
t.Fatalf("error getting original image id: %v", err)
}
tagID, err := inspectField(tag, "Id")
if err != nil {
t.Fatalf("error getting tagged image id: %v", err)
}
if tagID != expectedID {
t.Fatalf("expected image id %q, got %q", expectedID, tagID)
}
logDone("by_digest - tag by digest")
}
func TestListImagesWithoutDigests(t *testing.T) {
defer setupRegistry(t)()
digest, err := setupImage()
if err != nil {
t.Fatalf("error setting up image: %v", err)
}
imageReference := fmt.Sprintf("%s@%s", repoName, digest)
// pull from the registry using the <name>@<digest> reference
c := exec.Command(dockerBinary, "pull", imageReference)
out, _, err := runCommandWithOutput(c)
if err != nil {
t.Fatalf("error pulling by digest: %s, %v", out, err)
}
c = exec.Command(dockerBinary, "images")
out, _, err = runCommandWithOutput(c)
if err != nil {
t.Fatalf("error listing images: %s, %v", out, err)
}
if strings.Contains(out, "DIGEST") {
t.Fatalf("list output should not have contained DIGEST header: %s", out)
}
logDone("by_digest - list images - digest header not displayed by default")
}
func TestListImagesWithDigests(t *testing.T) {
defer setupRegistry(t)()
defer deleteImages(repoName+":tag1", repoName+":tag2")
// setup image1
digest1, err := setupImageWithTag("tag1")
if err != nil {
t.Fatalf("error setting up image: %v", err)
}
imageReference1 := fmt.Sprintf("%s@%s", repoName, digest1)
defer deleteImages(imageReference1)
t.Logf("imageReference1 = %s", imageReference1)
// pull image1 by digest
c := exec.Command(dockerBinary, "pull", imageReference1)
out, _, err := runCommandWithOutput(c)
if err != nil {
t.Fatalf("error pulling by digest: %s, %v", out, err)
}
// list images
c = exec.Command(dockerBinary, "images", "--digests")
out, _, err = runCommandWithOutput(c)
if err != nil {
t.Fatalf("error listing images: %s, %v", out, err)
}
// make sure repo shown, tag=<none>, digest = $digest1
re1 := regexp.MustCompile(`\s*` + repoName + `\s*<none>\s*` + digest1 + `\s`)
if !re1.MatchString(out) {
t.Fatalf("expected %q: %s", re1.String(), out)
}
// setup image2
digest2, err := setupImageWithTag("tag2")
if err != nil {
t.Fatalf("error setting up image: %v", err)
}
imageReference2 := fmt.Sprintf("%s@%s", repoName, digest2)
defer deleteImages(imageReference2)
t.Logf("imageReference2 = %s", imageReference2)
// pull image1 by digest
c = exec.Command(dockerBinary, "pull", imageReference1)
out, _, err = runCommandWithOutput(c)
if err != nil {
t.Fatalf("error pulling by digest: %s, %v", out, err)
}
// pull image2 by digest
c = exec.Command(dockerBinary, "pull", imageReference2)
out, _, err = runCommandWithOutput(c)
if err != nil {
t.Fatalf("error pulling by digest: %s, %v", out, err)
}
// list images
c = exec.Command(dockerBinary, "images", "--digests")
out, _, err = runCommandWithOutput(c)
if err != nil {
t.Fatalf("error listing images: %s, %v", out, err)
}
// make sure repo shown, tag=<none>, digest = $digest1
if !re1.MatchString(out) {
t.Fatalf("expected %q: %s", re1.String(), out)
}
// make sure repo shown, tag=<none>, digest = $digest2
re2 := regexp.MustCompile(`\s*` + repoName + `\s*<none>\s*` + digest2 + `\s`)
if !re2.MatchString(out) {
t.Fatalf("expected %q: %s", re2.String(), out)
}
// pull tag1
c = exec.Command(dockerBinary, "pull", repoName+":tag1")
out, _, err = runCommandWithOutput(c)
if err != nil {
t.Fatalf("error pulling tag1: %s, %v", out, err)
}
// list images
c = exec.Command(dockerBinary, "images", "--digests")
out, _, err = runCommandWithOutput(c)
if err != nil {
t.Fatalf("error listing images: %s, %v", out, err)
}
// make sure image 1 has repo, tag, <none> AND repo, <none>, digest
reWithTag1 := regexp.MustCompile(`\s*` + repoName + `\s*tag1\s*<none>\s`)
reWithDigest1 := regexp.MustCompile(`\s*` + repoName + `\s*<none>\s*` + digest1 + `\s`)
if !reWithTag1.MatchString(out) {
t.Fatalf("expected %q: %s", reWithTag1.String(), out)
}
if !reWithDigest1.MatchString(out) {
t.Fatalf("expected %q: %s", reWithDigest1.String(), out)
}
// make sure image 2 has repo, <none>, digest
if !re2.MatchString(out) {
t.Fatalf("expected %q: %s", re2.String(), out)
}
// pull tag 2
c = exec.Command(dockerBinary, "pull", repoName+":tag2")
out, _, err = runCommandWithOutput(c)
if err != nil {
t.Fatalf("error pulling tag2: %s, %v", out, err)
}
// list images
c = exec.Command(dockerBinary, "images", "--digests")
out, _, err = runCommandWithOutput(c)
if err != nil {
t.Fatalf("error listing images: %s, %v", out, err)
}
// make sure image 1 has repo, tag, digest
if !reWithTag1.MatchString(out) {
t.Fatalf("expected %q: %s", re1.String(), out)
}
// make sure image 2 has repo, tag, digest
reWithTag2 := regexp.MustCompile(`\s*` + repoName + `\s*tag2\s*<none>\s`)
reWithDigest2 := regexp.MustCompile(`\s*` + repoName + `\s*<none>\s*` + digest2 + `\s`)
if !reWithTag2.MatchString(out) {
t.Fatalf("expected %q: %s", reWithTag2.String(), out)
}
if !reWithDigest2.MatchString(out) {
t.Fatalf("expected %q: %s", reWithDigest2.String(), out)
}
// list images
c = exec.Command(dockerBinary, "images", "--digests")
out, _, err = runCommandWithOutput(c)
if err != nil {
t.Fatalf("error listing images: %s, %v", out, err)
}
// make sure image 1 has repo, tag, digest
if !reWithTag1.MatchString(out) {
t.Fatalf("expected %q: %s", re1.String(), out)
}
// make sure image 2 has repo, tag, digest
if !reWithTag2.MatchString(out) {
t.Fatalf("expected %q: %s", re2.String(), out)
}
// make sure busybox has tag, but not digest
busyboxRe := regexp.MustCompile(`\s*busybox\s*latest\s*<none>\s`)
if !busyboxRe.MatchString(out) {
t.Fatalf("expected %q: %s", busyboxRe.String(), out)
}
logDone("by_digest - list images with digests")
}
func TestDeleteImageByIDOnlyPulledByDigest(t *testing.T) {
defer setupRegistry(t)()
pushDigest, err := setupImage()
if err != nil {
t.Fatalf("error setting up image: %v", err)
}
// pull from the registry using the <name>@<digest> reference
imageReference := fmt.Sprintf("%s@%s", repoName, pushDigest)
c := exec.Command(dockerBinary, "pull", imageReference)
out, _, err := runCommandWithOutput(c)
if err != nil {
t.Fatalf("error pulling by digest: %s, %v", out, err)
}
// just in case...
defer deleteImages(imageReference)
imageID, err := inspectField(imageReference, ".Id")
if err != nil {
t.Fatalf("error inspecting image id: %v", err)
}
c = exec.Command(dockerBinary, "rmi", imageID)
if _, err := runCommand(c); err != nil {
t.Fatalf("error deleting image by id: %v", err)
}
logDone("by_digest - delete image by id only pulled by digest")
}

2
integration-cli/docker_cli_push_test.go
View file

@ -17,7 +17,7 @@ func TestPushBusyboxImage(t *testing.T) {
defer setupRegistry(t)()
repoName := fmt.Sprintf("%v/dockercli/busybox", privateRegistryURL)
// tag the image to upload it tot he private registry
// tag the image to upload it to the private registry
tagCmd := exec.Command(dockerBinary, "tag", "busybox", repoName)
if out, _, err := runCommandWithOutput(tagCmd); err != nil {
t.Fatalf("image tagging failed: %s, %v", out, err)

10
pkg/parsers/parsers.go
View file

@ -62,11 +62,17 @@ func ParseTCPAddr(addr string, defaultAddr string) (string, error) {
return fmt.Sprintf("tcp://%s:%d", host, p), nil
}
// Get a repos name and returns the right reposName + tag
// Get a repos name and returns the right reposName + tag|digest
// The tag can be confusing because of a port in a repository name.
// Ex: localhost.localdomain:5000/samalba/hipache:latest
// Digest ex: localhost:5000/foo/bar@sha256:bc8813ea7b3603864987522f02a76101c17ad122e1c46d790efc0fca78ca7bfb
func ParseRepositoryTag(repos string) (string, string) {
n := strings.LastIndex(repos, ":")
n := strings.Index(repos, "@")
if n >= 0 {
parts := strings.Split(repos, "@")
return parts[0], parts[1]
}
n = strings.LastIndex(repos, ":")
if n < 0 {
return repos, ""
}

9
pkg/parsers/parsers_test.go
View file

@ -49,18 +49,27 @@ func TestParseRepositoryTag(t *testing.T) {
if repo, tag := ParseRepositoryTag("root:tag"); repo != "root" || tag != "tag" {
t.Errorf("Expected repo: '%s' and tag: '%s', got '%s' and '%s'", "root", "tag", repo, tag)
}
if repo, digest := ParseRepositoryTag("root@sha256:e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"); repo != "root" || digest != "sha256:e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855" {
t.Errorf("Expected repo: '%s' and digest: '%s', got '%s' and '%s'", "root", "sha256:e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855", repo, digest)
}
if repo, tag := ParseRepositoryTag("user/repo"); repo != "user/repo" || tag != "" {
t.Errorf("Expected repo: '%s' and tag: '%s', got '%s' and '%s'", "user/repo", "", repo, tag)
}
if repo, tag := ParseRepositoryTag("user/repo:tag"); repo != "user/repo" || tag != "tag" {
t.Errorf("Expected repo: '%s' and tag: '%s', got '%s' and '%s'", "user/repo", "tag", repo, tag)
}
if repo, digest := ParseRepositoryTag("user/repo@sha256:e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"); repo != "user/repo" || digest != "sha256:e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855" {
t.Errorf("Expected repo: '%s' and digest: '%s', got '%s' and '%s'", "user/repo", "sha256:e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855", repo, digest)
}
if repo, tag := ParseRepositoryTag("url:5000/repo"); repo != "url:5000/repo" || tag != "" {
t.Errorf("Expected repo: '%s' and tag: '%s', got '%s' and '%s'", "url:5000/repo", "", repo, tag)
}
if repo, tag := ParseRepositoryTag("url:5000/repo:tag"); repo != "url:5000/repo" || tag != "tag" {
t.Errorf("Expected repo: '%s' and tag: '%s', got '%s' and '%s'", "url:5000/repo", "tag", repo, tag)
}
if repo, digest := ParseRepositoryTag("url:5000/repo@sha256:e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"); repo != "url:5000/repo" || digest != "sha256:e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855" {
t.Errorf("Expected repo: '%s' and digest: '%s', got '%s' and '%s'", "url:5000/repo", "sha256:e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855", repo, digest)
}
}
func TestParsePortMapping(t *testing.T) {

40
registry/session_v2.go
View file

@ -12,6 +12,8 @@ import (
"github.com/docker/docker/utils"
)
const DockerDigestHeader = "Docker-Content-Digest"
func getV2Builder(e *Endpoint) *v2.URLBuilder {
if e.URLBuilder == nil {
e.URLBuilder = v2.NewURLBuilder(e.URL)
@ -63,10 +65,10 @@ func (r *Session) GetV2Authorization(ep *Endpoint, imageName string, readOnly bo
// 1.c) if anything else, err
// 2) PUT the created/signed manifest
//
func (r *Session) GetV2ImageManifest(ep *Endpoint, imageName, tagName string, auth *RequestAuthorization) ([]byte, error) {
func (r *Session) GetV2ImageManifest(ep *Endpoint, imageName, tagName string, auth *RequestAuthorization) ([]byte, string, error) {
routeURL, err := getV2Builder(ep).BuildManifestURL(imageName, tagName)
if err != nil {
return nil, err
return nil, "", err
}
method := "GET"
@ -74,30 +76,30 @@ func (r *Session) GetV2ImageManifest(ep *Endpoint, imageName, tagName string, au
req, err := r.reqFactory.NewRequest(method, routeURL, nil)
if err != nil {
return nil, err
return nil, "", err
}
if err := auth.Authorize(req); err != nil {
return nil, err
return nil, "", err
}
res, _, err := r.doRequest(req)
if err != nil {
return nil, err
return nil, "", err
}
defer res.Body.Close()
if res.StatusCode != 200 {
if res.StatusCode == 401 {
return nil, errLoginRequired
return nil, "", errLoginRequired
} else if res.StatusCode == 404 {
return nil, ErrDoesNotExist
return nil, "", ErrDoesNotExist
}
return nil, utils.NewHTTPRequestError(fmt.Sprintf("Server error: %d trying to fetch for %s:%s", res.StatusCode, imageName, tagName), res)
return nil, "", utils.NewHTTPRequestError(fmt.Sprintf("Server error: %d trying to fetch for %s:%s", res.StatusCode, imageName, tagName), res)
}
buf, err := ioutil.ReadAll(res.Body)
if err != nil {
return nil, fmt.Errorf("Error while reading the http response: %s", err)
return nil, "", fmt.Errorf("Error while reading the http response: %s", err)
}
return buf, nil
return buf, res.Header.Get(DockerDigestHeader), nil
}
// - Succeeded to head image blob (already exists)
@ -261,41 +263,41 @@ func (r *Session) PutV2ImageBlob(ep *Endpoint, imageName, sumType, sumStr string
}
// Finally Push the (signed) manifest of the blobs we've just pushed
func (r *Session) PutV2ImageManifest(ep *Endpoint, imageName, tagName string, manifestRdr io.Reader, auth *RequestAuthorization) error {
func (r *Session) PutV2ImageManifest(ep *Endpoint, imageName, tagName string, manifestRdr io.Reader, auth *RequestAuthorization) (string, error) {
routeURL, err := getV2Builder(ep).BuildManifestURL(imageName, tagName)
if err != nil {
return err
return "", err
}
method := "PUT"
log.Debugf("[registry] Calling %q %s", method, routeURL)
req, err := r.reqFactory.NewRequest(method, routeURL, manifestRdr)
if err != nil {
return err
return "", err
}
if err := auth.Authorize(req); err != nil {
return err
return "", err
}
res, _, err := r.doRequest(req)
if err != nil {
return err
return "", err
}
defer res.Body.Close()
// All 2xx and 3xx responses can be accepted for a put.
if res.StatusCode >= 400 {
if res.StatusCode == 401 {
return errLoginRequired
return "", errLoginRequired
}
errBody, err := ioutil.ReadAll(res.Body)
if err != nil {
return err
return "", err
}
log.Debugf("Unexpected response from server: %q %#v", errBody, res.Header)
return utils.NewHTTPRequestError(fmt.Sprintf("Server error: %d trying to push %s:%s manifest", res.StatusCode, imageName, tagName), res)
return "", utils.NewHTTPRequestError(fmt.Sprintf("Server error: %d trying to push %s:%s manifest", res.StatusCode, imageName, tagName), res)
}
return nil
return res.Header.Get(DockerDigestHeader), nil
}
type remoteTags struct {

3
registry/v2/regexp.go
View file

@ -17,3 +17,6 @@ var RepositoryNameRegexp = regexp.MustCompile(`(?:` + RepositoryNameComponentReg
// TagNameRegexp matches valid tag names. From docker/docker:graph/tags.go.
var TagNameRegexp = regexp.MustCompile(`[\w][\w.-]{0,127}`)
// DigestRegexp matches valid digest types.
var DigestRegexp = regexp.MustCompile(`[a-zA-Z0-9-_+.]+:[a-zA-Z0-9-_+.=]+`)

8
registry/v2/routes.go
View file

@ -33,11 +33,11 @@ func Router() *mux.Router {
Path("/v2/").
Name(RouteNameBase)
// GET /v2/<name>/manifest/<tag> Image Manifest Fetch the image manifest identified by name and tag.
// PUT /v2/<name>/manifest/<tag> Image Manifest Upload the image manifest identified by name and tag.
// DELETE /v2/<name>/manifest/<tag> Image Manifest Delete the image identified by name and tag.
// GET /v2/<name>/manifest/<reference> Image Manifest Fetch the image manifest identified by name and reference where reference can be a tag or digest.
// PUT /v2/<name>/manifest/<reference> Image Manifest Upload the image manifest identified by name and reference where reference can be a tag or digest.
// DELETE /v2/<name>/manifest/<reference> Image Manifest Delete the image identified by name and reference where reference can be a tag or digest.
router.
Path("/v2/{name:" + RepositoryNameRegexp.String() + "}/manifests/{tag:" + TagNameRegexp.String() + "}").
Path("/v2/{name:" + RepositoryNameRegexp.String() + "}/manifests/{reference:" + TagNameRegexp.String() + "|" + DigestRegexp.String() + "}").
Name(RouteNameManifest)
// GET /v2/<name>/tags/list Tags Fetch the tags under the repository identified by name.

12
registry/v2/routes_test.go
View file

@ -55,16 +55,16 @@ func TestRouter(t *testing.T) {
RouteName: RouteNameManifest,
RequestURI: "/v2/foo/manifests/bar",
Vars: map[string]string{
"name": "foo",
"tag": "bar",
"name": "foo",
"reference": "bar",
},
},
{
RouteName: RouteNameManifest,
RequestURI: "/v2/foo/bar/manifests/tag",
Vars: map[string]string{
"name": "foo/bar",
"tag": "tag",
"name": "foo/bar",
"reference": "tag",
},
},
{
@ -128,8 +128,8 @@ func TestRouter(t *testing.T) {
RouteName: RouteNameManifest,
RequestURI: "/v2/foo/bar/manifests/manifests/tags",
Vars: map[string]string{
"name": "foo/bar/manifests",
"tag": "tags",
"name": "foo/bar/manifests",
"reference": "tags",
},
},
{

6
registry/v2/urls.go
View file

@ -74,11 +74,11 @@ func (ub *URLBuilder) BuildTagsURL(name string) (string, error) {
return tagsURL.String(), nil
}
// BuildManifestURL constructs a url for the manifest identified by name and tag.
func (ub *URLBuilder) BuildManifestURL(name, tag string) (string, error) {
// BuildManifestURL constructs a url for the manifest identified by name and reference.
func (ub *URLBuilder) BuildManifestURL(name, reference string) (string, error) {
route := ub.cloneRoute(RouteNameManifest)
manifestURL, err := route.URL("name", name, "tag", tag)
manifestURL, err := route.URL("name", name, "reference", reference)
if err != nil {
return "", err
}

17
utils/utils.go
View file

@ -535,3 +535,20 @@ func (wc *WriteCounter) Write(p []byte) (count int, err error) {
wc.Count += int64(count)
return
}
// ImageReference combines `repo` and `ref` and returns a string representing
// the combination. If `ref` is a digest (meaning it's of the form
// <algorithm>:<digest>, the returned string is <repo>@<ref>. Otherwise,
// ref is assumed to be a tag, and the returned string is <repo>:<tag>.
func ImageReference(repo, ref string) string {
if DigestReference(ref) {
return repo + "@" + ref
}
return repo + ":" + ref
}
// DigestReference returns true if ref is a digest reference; i.e. if it
// is of the form <algorithm>:<digest>.
func DigestReference(ref string) bool {
return strings.Contains(ref, ":")
}

30
utils/utils_test.go
View file

@ -122,3 +122,33 @@ func TestWriteCounter(t *testing.T) {
t.Error("Wrong message written")
}
}
func TestImageReference(t *testing.T) {
tests := []struct {
repo string
ref string
expected string
}{
{"repo", "tag", "repo:tag"},
{"repo", "sha256:c100b11b25d0cacd52c14e0e7bf525e1a4c0e6aec8827ae007055545909d1a64", "repo@sha256:c100b11b25d0cacd52c14e0e7bf525e1a4c0e6aec8827ae007055545909d1a64"},
}
for i, test := range tests {
actual := ImageReference(test.repo, test.ref)
if test.expected != actual {
t.Errorf("%d: expected %q, got %q", i, test.expected, actual)
}
}
}
func TestDigestReference(t *testing.T) {
input := "sha256:c100b11b25d0cacd52c14e0e7bf525e1a4c0e6aec8827ae007055545909d1a64"
if !DigestReference(input) {
t.Errorf("Expected DigestReference=true for input %q", input)
}
input = "latest"
if DigestReference(input) {
t.Errorf("Unexpected DigestReference=true for input %q", input)
}
}