func (fetcher *dockerMetadataFetcher) FetchMetadata(dockerPath string) (*ImageMetadata, error) {
indexName, remoteName, tag, err := docker_repository_name_formatter.ParseRepoNameAndTagFromImageReference(dockerPath)
if err != nil {
return nil, err
}
var reposName string
if len(indexName) > 0 {
reposName = fmt.Sprintf("%s/%s", indexName, remoteName)
} else {
reposName = remoteName
}
var session DockerSession
if session, err = fetcher.dockerSessionFactory.MakeSession(reposName, false); err != nil {
if !strings.Contains(err.Error(), "this private registry supports only HTTP or HTTPS with an unknown CA certificate") {
return nil, err
}
session, err = fetcher.dockerSessionFactory.MakeSession(reposName, true)
if err != nil {
return nil, err
}
}
repoData, err := session.GetRepositoryData(remoteName)
if err != nil {
return nil, err
}
tagsList, err := session.GetRemoteTags(repoData.Endpoints, remoteName, repoData.Tokens)
if err != nil {
return nil, err
}
imgID, ok := tagsList[tag]
if !ok {
return nil, fmt.Errorf("Unknown tag: %s:%s", remoteName, tag)
}
var img *image.Image
endpoint := repoData.Endpoints[0]
imgJSON, _, err := session.GetRemoteImageJSON(imgID, endpoint, repoData.Tokens)
if err != nil {
return nil, err
}
img, err = image.NewImgJSON(imgJSON)
if err != nil {
return nil, fmt.Errorf("Error parsing remote image json for specified docker image:\n%s", err)
}
if img.Config == nil {
return nil, fmt.Errorf("Parsing start command failed")
}
startCommand := append(img.Config.Entrypoint, img.Config.Cmd...)
exposedPorts := sortPorts(img.ContainerConfig.ExposedPorts)
return &ImageMetadata{
WorkingDir: img.Config.WorkingDir,
User: img.Config.User,
StartCommand: startCommand,
ExposedPorts: exposedPorts,
Env: img.Config.Env,
}, nil
}
_, err := docker_repository_name_formatter.FormatForReceptor("¥¥¥¥¥suchabadname¥¥¥¥¥")
Expect(err).To(MatchError("Invalid repository name (¥¥¥¥¥suchabadname¥¥¥¥¥), only [a-z0-9-_.] are allowed"))
})
It("returns an error for an invalid namespace name", func() {
_, err := docker_repository_name_formatter.FormatForReceptor("jim/my-docker-app")
Expect(err).To(MatchError("Invalid namespace name (jim). Cannot be fewer than 4 or more than 30 characters."))
})
})
})
Describe("ParseRepoNameAndTagFromImageReference", func() {
Context("with a well-formed docker repo name", func() {
Context("with a shortened official docker repo name", func() {
It("parses the repo and tag from a docker image reference", func() {
indexName, remoteName, tag, err := docker_repository_name_formatter.ParseRepoNameAndTagFromImageReference("my-docker-app:test")
Expect(err).NotTo(HaveOccurred())
Expect(indexName).To(BeEmpty())
Expect(remoteName).To(Equal("library/my-docker-app"))
Expect(tag).To(Equal("test"))
})
It("parses the repo and defaults tag to latest for docker image reference without a tag", func() {
indexName, remoteName, tag, err := docker_repository_name_formatter.ParseRepoNameAndTagFromImageReference("my-docker-app")
Expect(err).NotTo(HaveOccurred())
Expect(indexName).To(BeEmpty())
Expect(remoteName).To(Equal("library/my-docker-app"))
Expect(tag).To(Equal("latest"))
})
})
