Merge branch 'docker-registry-view' into 'master'

Add container registry support

Tasks:

- [x] Merge docker/distribution authentication service: https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/3787
- [x] Implement Docker Registry API
- [x] Show a list of docker images in GitLab
- [x] Remove registry repository on project deletion
- [x] Support project rename, move and namespace rename
- [x] Use token when connecting the registry
- [x] Allow to delete images from GitLab
- [x] Support pushing from GitLab CI (gitlab-ci-token / $CI_BUILD_TOKEN)
- [x] Support GitLab Runner pulling for public repositories
- [ ] Support GitLab Runner pulling for private repositories
- [x] Add tests for Docker Registry API
- [x] Add tests for a views
- [x] Make texts nicer
- [x] Implement a backup support

- [ ] Create administration documentation https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/4141
- [ ] Create user documentation

See merge request !4040

1 files changed, 26 insertions, 3 deletions

diff --git a/app/models/project.rb b/app/models/project.rb
index b7ae34c95c6..2a6b0839b64 100644
--- a/app/models/project.rb
+++ b/app/models/project.rb
@@ -329,12 +329,30 @@ class Project < ActiveRecord::Base
     @repository ||= Repository.new(path_with_namespace, self)
   end
 
-  def container_registry_url
-    if container_registry_enabled? && Gitlab.config.registry.enabled
-      "#{Gitlab.config.registry.host_with_port}/#{path_with_namespace}"
+  def container_registry_repository
+    return unless Gitlab.config.registry.enabled
+
+    @container_registry_repository ||= begin
+      token = Auth::ContainerRegistryAuthenticationService.full_access_token(path_with_namespace)
+      url = Gitlab.config.registry.api_url
+      host_port = Gitlab.config.registry.host_port
+      registry = ContainerRegistry::Registry.new(url, token: token, path: host_port)
+      registry.repository(path_with_namespace)
     end
   end
 
+  def container_registry_repository_url
+    if Gitlab.config.registry.enabled
+      "#{Gitlab.config.registry.host_port}/#{path_with_namespace}"
+    end
+  end
+
+  def has_container_registry_tags?
+    return unless container_registry_repository
+
+    container_registry_repository.tags.any?
+  end
+
   def commit(id = 'HEAD')
     repository.commit(id)
   end
@@ -746,6 +764,11 @@ class Project < ActiveRecord::Base
 
     expire_caches_before_rename(old_path_with_namespace)
 
+    if has_container_registry_tags?
+      # we currently doesn't support renaming repository if it contains tags in container registry
+      raise Exception.new('Project cannot be renamed, because tags are present in its container registry')
+    end
+
     if gitlab_shell.mv_repository(old_path_with_namespace, new_path_with_namespace)
       # If repository moved successfully we need to send update instructions to users.
       # However we cannot allow rollback since we moved repository