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Merge pull request #3431 from shin-/ping_standalone_check

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Check standalone header when pinging a registry server.
This commit is contained in:
Michael Crosby 2014-01-07 10:33:07 -08:00
commit 6fc5e50471
2 changed files with 32 additions and 13 deletions
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42
docs/registry.go
View file

@ -25,11 +25,11 @@ var (
ErrLoginRequired = errors.New("Authentication is required.")
)
func pingRegistryEndpoint(endpoint string) error {
func pingRegistryEndpoint(endpoint string) (bool, error) {
if endpoint == auth.IndexServerAddress() {
// Skip the check, we now this one is valid
// (and we never want to fallback to http in case of error)
return nil
return false, nil
}
httpDial := func(proto string, addr string) (net.Conn, error) {
// Set the connect timeout to 5 seconds
@ -45,14 +45,26 @@ func pingRegistryEndpoint(endpoint string) error {
client := &http.Client{Transport: httpTransport}
resp, err := client.Get(endpoint + "_ping")
if err != nil {
return err
return false, err
}
defer resp.Body.Close()
if resp.Header.Get("X-Docker-Registry-Version") == "" {
return errors.New("This does not look like a Registry server (\"X-Docker-Registry-Version\" header not found in the response)")
return false, errors.New("This does not look like a Registry server (\"X-Docker-Registry-Version\" header not found in the response)")
}
return nil
standalone := resp.Header.Get("X-Docker-Registry-Standalone")
utils.Debugf("Registry standalone header: '%s'", standalone)
// If the header is absent, we assume true for compatibility with earlier
// versions of the registry
if standalone == "" {
return true, nil
// Accepted values are "true" (case-insensitive) and "1".
} else if strings.EqualFold(standalone, "true") || standalone == "1" {
return true, nil
}
// Otherwise, not standalone
return false, nil
}
func validateRepositoryName(repositoryName string) error {
@ -122,16 +134,16 @@ func ExpandAndVerifyRegistryUrl(hostname string) (string, error) {
// there is no path given. Expand with default path
hostname = hostname + "/v1/"
}
if err := pingRegistryEndpoint(hostname); err != nil {
if _, err := pingRegistryEndpoint(hostname); err != nil {
return "", errors.New("Invalid Registry endpoint: " + err.Error())
}
return hostname, nil
}
endpoint := fmt.Sprintf("https://%s/v1/", hostname)
if err := pingRegistryEndpoint(endpoint); err != nil {
if _, err := pingRegistryEndpoint(endpoint); err != nil {
utils.Debugf("Registry %s does not work (%s), falling back to http", endpoint, err)
endpoint = fmt.Sprintf("http://%s/v1/", hostname)
if err = pingRegistryEndpoint(endpoint); err != nil {
if _, err = pingRegistryEndpoint(endpoint); err != nil {
//TODO: triggering highland build can be done there without "failing"
return "", errors.New("Invalid Registry endpoint: " + err.Error())
}
@ -682,12 +694,18 @@ func NewRegistry(authConfig *auth.AuthConfig, factory *utils.HTTPRequestFactory,
return nil, err
}
// If we're working with a private registry over HTTPS, send Basic Auth headers
// If we're working with a standalone private registry over HTTPS, send Basic Auth headers
// alongside our requests.
if indexEndpoint != auth.IndexServerAddress() && strings.HasPrefix(indexEndpoint, "https://") {
utils.Debugf("Endpoint %s is eligible for private registry auth. Enabling decorator.", indexEndpoint)
dec := utils.NewHTTPAuthDecorator(authConfig.Username, authConfig.Password)
factory.AddDecorator(dec)
standalone, err := pingRegistryEndpoint(indexEndpoint)
if err != nil {
return nil, err
}
if standalone {
utils.Debugf("Endpoint %s is eligible for private registry auth. Enabling decorator.", indexEndpoint)
dec := utils.NewHTTPAuthDecorator(authConfig.Username, authConfig.Password)
factory.AddDecorator(dec)
}
}
r.reqFactory = factory

3
docs/registry_test.go
View file

@ -23,10 +23,11 @@ func spawnTestRegistry(t *testing.T) *Registry {
}
func TestPingRegistryEndpoint(t *testing.T) {
err := pingRegistryEndpoint(makeURL("/v1/"))
standalone, err := pingRegistryEndpoint(makeURL("/v1/"))
if err != nil {
t.Fatal(err)
}
assertEqual(t, standalone, true, "Expected standalone to be true (default)")
}
func TestGetRemoteHistory(t *testing.T) {