// BuildBlobURL constructs the url for the blob identified by name and dgst.
func (ub *URLBuilder) BuildBlobURL(ref reference.Canonical) (string, error) {
route := ub.cloneRoute(RouteNameBlob)
layerURL, err := route.URL("name", ref.Name(), "digest", ref.Digest().String())
if err != nil {
return "", err
}
return layerURL.String(), nil
}
func (cli *DockerCli) tagTrusted(trustedRef reference.Canonical, ref reference.NamedTagged) error {
fmt.Fprintf(cli.out, "Tagging %s as %s\n", trustedRef.String(), ref.String())
options := types.ImageTagOptions{
ImageID: trustedRef.String(),
RepositoryName: trustedRef.Name(),
Tag: ref.Tag(),
Force: true,
}
return cli.client.ImageTag(options)
}
func (cli *DockerCli) tagTrusted(trustedRef reference.Canonical, ref reference.NamedTagged) error {
fmt.Fprintf(cli.out, "Tagging %s as %s\n", trustedRef.String(), ref.String())
tv := url.Values{}
tv.Set("repo", trustedRef.Name())
tv.Set("tag", ref.Tag())
tv.Set("force", "1")
if _, _, err := readBody(cli.call("POST", "/images/"+trustedRef.String()+"/tag?"+tv.Encode(), nil, nil)); err != nil {
return err
}
return nil
}
// NewRegistryPullThroughCache creates a registry acting as a pull through cache
func NewRegistryPullThroughCache(ctx context.Context, registry distribution.Namespace, driver driver.StorageDriver, config configuration.Proxy) (distribution.Namespace, error) {
remoteURL, err := url.Parse(config.RemoteURL)
if err != nil {
return nil, err
}
v := storage.NewVacuum(ctx, driver)
s := scheduler.New(ctx, driver, "/scheduler-state.json")
s.OnBlobExpire(func(ref reference.Reference) error {
var r reference.Canonical
var ok bool
if r, ok = ref.(reference.Canonical); !ok {
return fmt.Errorf("unexpected reference type : %T", ref)
}
repo, err := registry.Repository(ctx, r)
if err != nil {
return err
}
blobs := repo.Blobs(ctx)
// Clear the repository reference and descriptor caches
err = blobs.Delete(ctx, r.Digest())
if err != nil {
return err
}
err = v.RemoveBlob(r.Digest().String())
if err != nil {
return err
}
return nil
})
s.OnManifestExpire(func(ref reference.Reference) error {
var r reference.Canonical
var ok bool
if r, ok = ref.(reference.Canonical); !ok {
return fmt.Errorf("unexpected reference type : %T", ref)
}
repo, err := registry.Repository(ctx, r)
if err != nil {
return err
}
manifests, err := repo.Manifests(ctx)
if err != nil {
return err
}
err = manifests.Delete(ctx, r.Digest())
if err != nil {
return err
}
return nil
})
err = s.Start()
if err != nil {
return nil, err
}
cs, err := configureAuth(config.Username, config.Password, config.RemoteURL)
if err != nil {
return nil, err
}
return &proxyingRegistry{
embedded: registry,
scheduler: s,
remoteURL: *remoteURL,
authChallenger: &remoteAuthChallenger{
remoteURL: *remoteURL,
cm: auth.NewSimpleChallengeManager(),
cs: cs,
},
}, nil
}
func (cli *DockerCli) createContainer(config *runconfig.Config, hostConfig *runconfig.HostConfig, cidfile, name string) (*types.ContainerCreateResponse, error) {
mergedConfig := runconfig.MergeConfigs(config, hostConfig)
var containerIDFile *cidFile
if cidfile != "" {
var err error
if containerIDFile, err = newCIDFile(cidfile); err != nil {
return nil, err
}
defer containerIDFile.Close()
}
ref, err := reference.ParseNamed(config.Image)
if err != nil {
return nil, err
}
isDigested := false
switch ref.(type) {
case reference.Tagged:
case reference.Digested:
isDigested = true
default:
ref, err = reference.WithTag(ref, tagpkg.DefaultTag)
if err != nil {
return nil, err
}
}
var trustedRef reference.Canonical
if isTrusted() && !isDigested {
var err error
trustedRef, err = cli.trustedReference(ref.(reference.NamedTagged))
if err != nil {
return nil, err
}
config.Image = trustedRef.String()
}
//create the container
response, err := cli.client.ContainerCreate(mergedConfig, name)
//if image not found try to pull it
if err != nil {
if lib.IsErrImageNotFound(err) {
fmt.Fprintf(cli.err, "Unable to find image '%s' locally\n", ref.String())
// we don't want to write to stdout anything apart from container.ID
if err = cli.pullImageCustomOut(config.Image, cli.err); err != nil {
return nil, err
}
if trustedRef != nil && !isDigested {
if err := cli.tagTrusted(trustedRef, ref.(reference.NamedTagged)); err != nil {
return nil, err
}
}
// Retry
var retryErr error
response, retryErr = cli.client.ContainerCreate(mergedConfig, name)
if retryErr != nil {
return nil, retryErr
}
} else {
return nil, err
}
}
for _, warning := range response.Warnings {
fmt.Fprintf(cli.err, "WARNING: %s\n", warning)
}
if containerIDFile != nil {
if err = containerIDFile.Write(response.ID); err != nil {
return nil, err
}
}
return &response, nil
}
func (cli *DockerCli) createContainer(config *runconfig.Config, hostConfig *runconfig.HostConfig, cidfile, name string) (*types.ContainerCreateResponse, error) {
containerValues := url.Values{}
if name != "" {
containerValues.Set("name", name)
}
mergedConfig := runconfig.MergeConfigs(config, hostConfig)
var containerIDFile *cidFile
if cidfile != "" {
var err error
if containerIDFile, err = newCIDFile(cidfile); err != nil {
return nil, err
}
defer containerIDFile.Close()
}
ref, err := reference.ParseNamed(config.Image)
if err != nil {
return nil, err
}
isDigested := false
switch ref.(type) {
case reference.Tagged:
case reference.Digested:
isDigested = true
default:
ref, err = reference.WithTag(ref, tagpkg.DefaultTag)
if err != nil {
return nil, err
}
}
var trustedRef reference.Canonical
if isTrusted() && !isDigested {
var err error
trustedRef, err = cli.trustedReference(ref.(reference.NamedTagged))
if err != nil {
return nil, err
}
config.Image = trustedRef.String()
}
//create the container
serverResp, err := cli.call("POST", "/containers/create?"+containerValues.Encode(), mergedConfig, nil)
//if image not found try to pull it
if serverResp.statusCode == 404 && strings.Contains(err.Error(), config.Image) {
fmt.Fprintf(cli.err, "Unable to find image '%s' locally\n", ref.String())
// we don't want to write to stdout anything apart from container.ID
if err = cli.pullImageCustomOut(config.Image, cli.err); err != nil {
return nil, err
}
if trustedRef != nil && !isDigested {
if err := cli.tagTrusted(trustedRef, ref.(reference.NamedTagged)); err != nil {
return nil, err
}
}
// Retry
if serverResp, err = cli.call("POST", "/containers/create?"+containerValues.Encode(), mergedConfig, nil); err != nil {
return nil, err
}
} else if err != nil {
return nil, err
}
defer serverResp.body.Close()
var response types.ContainerCreateResponse
if err := json.NewDecoder(serverResp.body).Decode(&response); err != nil {
return nil, err
}
for _, warning := range response.Warnings {
fmt.Fprintf(cli.err, "WARNING: %s\n", warning)
}
if containerIDFile != nil {
if err = containerIDFile.Write(response.ID); err != nil {
return nil, err
}
}
return &response, nil
}