1 files changed, 61 insertions, 0 deletions
diff --git a/lib/container_registry/client.rb b/lib/container_registry/client.rb
new file mode 100644
index 00000000000..4d726692f45
--- /dev/null
+++ b/lib/container_registry/client.rb
@@ -0,0 +1,61 @@
+require 'faraday'
+require 'faraday_middleware'
+
+module ContainerRegistry
+  class Client
+    attr_accessor :uri
+
+    MANIFEST_VERSION = 'application/vnd.docker.distribution.manifest.v2+json'
+
+    def initialize(base_uri, options = {})
+      @base_uri = base_uri
+      @faraday = Faraday.new(@base_uri) do |conn|
+        initialize_connection(conn, options)
+      end
+    end
+
+    def repository_tags(name)
+      @faraday.get("/v2/#{name}/tags/list").body
+    end
+
+    def repository_manifest(name, reference)
+      @faraday.get("/v2/#{name}/manifests/#{reference}").body
+    end
+
+    def repository_tag_digest(name, reference)
+      response = @faraday.head("/v2/#{name}/manifests/#{reference}")
+      response.headers['docker-content-digest'] if response.success?
+    end
+
+    def delete_repository_tag(name, reference)
+      @faraday.delete("/v2/#{name}/manifests/#{reference}").success?
+    end
+
+    def blob(name, digest, type = nil)
+      headers = {}
+      headers['Accept'] = type if type
+      @faraday.get("/v2/#{name}/blobs/#{digest}", nil, headers).body
+    end
+
+    def delete_blob(name, digest)
+      @faraday.delete("/v2/#{name}/blobs/#{digest}").success?
+    end
+    
+    private
+    
+    def initialize_connection(conn, options)
+      conn.request :json
+      conn.headers['Accept'] = MANIFEST_VERSION
+
+      conn.response :json, content_type: /\bjson$/
+
+      if options[:user] && options[:password]
+        conn.request(:basic_auth, options[:user].to_s, options[:password].to_s)
+      elsif options[:token]
+        conn.request(:authorization, :bearer, options[:token].to_s)
+      end
+
+      conn.adapter :net_http
+    end
+  end
+end