1 files changed, 29 insertions, 0 deletions
diff --git a/app/services/dependency_proxy/head_manifest_service.rb b/app/services/dependency_proxy/head_manifest_service.rb
new file mode 100644
index 00000000000..87d9c417c98
--- /dev/null
+++ b/app/services/dependency_proxy/head_manifest_service.rb
@@ -0,0 +1,29 @@
+# frozen_string_literal: true
+
+module DependencyProxy
+  class HeadManifestService < DependencyProxy::BaseService
+    def initialize(image, tag, token)
+      @image = image
+      @tag = tag
+      @token = token
+    end
+
+    def execute
+      response = Gitlab::HTTP.head(manifest_url, headers: auth_headers)
+
+      if response.success?
+        success(digest: response.headers['docker-content-digest'])
+      else
+        error(response.body, response.code)
+      end
+    rescue Timeout::Error => exception
+      error(exception.message, 599)
+    end
+
+    private
+
+    def manifest_url
+      registry.manifest_url(@image, @tag)
+    end
+  end
+end