Example #1
0
// Provide implements DockerConfigProvider
func (g *containerRegistryProvider) Provide() credentialprovider.DockerConfig {
	cfg := credentialprovider.DockerConfig{}

	tokenJsonBlob, err := credentialprovider.ReadUrl(metadataToken, g.Client, metadataHeader)
	if err != nil {
		glog.Errorf("while reading access token endpoint: %v", err)
		return cfg
	}

	email, err := credentialprovider.ReadUrl(metadataEmail, g.Client, metadataHeader)
	if err != nil {
		glog.Errorf("while reading email endpoint: %v", err)
		return cfg
	}

	var parsedBlob tokenBlob
	if err := json.Unmarshal([]byte(tokenJsonBlob), &parsedBlob); err != nil {
		glog.Errorf("while parsing json blob %s: %v", tokenJsonBlob, err)
		return cfg
	}

	entry := credentialprovider.DockerConfigEntry{
		Username: "******",
		Password: parsedBlob.AccessToken,
		Email:    string(email),
	}

	// Add our entry for each of the supported container registry URLs
	for _, k := range containerRegistryUrls {
		cfg[k] = entry
	}
	return cfg
}
Example #2
0
// Provide implements DockerConfigProvider
func (g *dockerConfigUrlKeyProvider) Provide() credentialprovider.DockerConfig {
	// Read the contents of the google-dockercfg-url key and load a .dockercfg from there
	if url, err := credentialprovider.ReadUrl(dockerConfigUrlKey, g.Client, metadataHeader); err != nil {
		glog.Errorf("while reading 'google-dockercfg-url' metadata: %v", err)
	} else {
		if strings.HasPrefix(string(url), "http") {
			if cfg, err := credentialprovider.ReadDockerConfigFileFromUrl(string(url), g.Client, nil); err != nil {
				glog.Errorf("while reading 'google-dockercfg-url'-specified url: %s, %v", string(url), err)
			} else {
				return cfg
			}
		} else {
			// TODO(mattmoor): support reading alternate scheme URLs (e.g. gs:// or s3://)
			glog.Errorf("Unsupported URL scheme: %s", string(url))
		}
	}

	return credentialprovider.DockerConfig{}
}
Example #3
0
// Enabled implements a special metadata-based check, which verifies the
// storage scope is available on the GCE VM.
func (g *containerRegistryProvider) Enabled() bool {
	value, err := credentialprovider.ReadUrl(metadataScopes+"?alt=json", g.Client, metadataHeader)
	if err != nil {
		return false
	}
	var scopes []string
	if err := json.Unmarshal([]byte(value), &scopes); err != nil {
		return false
	}

	for _, v := range scopes {
		// cloudPlatformScope implies storage scope.
		if strings.HasPrefix(v, storageScopePrefix) || strings.HasPrefix(v, cloudPlatformScopePrefix) {
			return true
		}
	}
	glog.Warningf("Google container registry is disabled, no storage scope is available: %s", value)
	return false
}
Example #4
0
// Enabled implements DockerConfigProvider for all of the Google implementations.
func (g *metadataProvider) Enabled() bool {
	_, err := credentialprovider.ReadUrl(metadataUrl, g.Client, metadataHeader)
	return err == nil
}