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registry: Do not push to mirrors

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This patch splits LookupEndpoints into LookupPullEndpoints and
LookupPushEndpoints so that mirrors added with --registry-mirror are
skipped in the list returned by LookupPushEndpoints.

Fixes https://github.com/docker/distribution/issues/823

Signed-off-by: Tibor Vass <tibor@docker.com>
This commit is contained in:
Tibor Vass 2015-08-06 17:41:59 -04:00
parent 86a3ea91b8
commit a7eb16ad1c
1 changed files with 28 additions and 15 deletions
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43
docs/service.go
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@ -109,27 +109,40 @@ func (s *Service) tlsConfigForMirror(mirror string) (*tls.Config, error) {
return s.TLSConfig(mirrorURL.Host)
}
// LookupEndpoints creates an list of endpoints to try, in order of preference.
// LookupPullEndpoints creates an list of endpoints to try to pull from, in order of preference.
// It gives preference to v2 endpoints over v1, mirrors over the actual
// registry, and HTTPS over plain HTTP.
func (s *Service) LookupEndpoints(repoName string) (endpoints []APIEndpoint, err error) {
func (s *Service) LookupPullEndpoints(repoName string) (endpoints []APIEndpoint, err error) {
return s.lookupEndpoints(repoName, false)
}
// LookupPushEndpoints creates an list of endpoints to try to push to, in order of preference.
// It gives preference to v2 endpoints over v1, and HTTPS over plain HTTP.
// Mirrors are not included.
func (s *Service) LookupPushEndpoints(repoName string) (endpoints []APIEndpoint, err error) {
return s.lookupEndpoints(repoName, true)
}
func (s *Service) lookupEndpoints(repoName string, isPush bool) (endpoints []APIEndpoint, err error) {
var cfg = tlsconfig.ServerDefault
tlsConfig := &cfg
if strings.HasPrefix(repoName, DefaultNamespace+"/") {
// v2 mirrors
for _, mirror := range s.Config.Mirrors {
mirrorTLSConfig, err := s.tlsConfigForMirror(mirror)
if err != nil {
return nil, err
if !isPush {
// v2 mirrors for pull only
for _, mirror := range s.Config.Mirrors {
mirrorTLSConfig, err := s.tlsConfigForMirror(mirror)
if err != nil {
return nil, err
}
endpoints = append(endpoints, APIEndpoint{
URL: mirror,
// guess mirrors are v2
Version: APIVersion2,
Mirror: true,
TrimHostname: true,
TLSConfig: mirrorTLSConfig,
})
}
endpoints = append(endpoints, APIEndpoint{
URL: mirror,
// guess mirrors are v2
Version: APIVersion2,
Mirror: true,
TrimHostname: true,
TLSConfig: mirrorTLSConfig,
})
}
// v2 registry
endpoints = append(endpoints, APIEndpoint{