Call finalize method on builder

module_build_service/builder.py

@@ -240,6 +240,19 @@ class GenericBuilder(six.with_metaclass(ABCMeta)):
         """
         raise NotImplementedError()
 
+    def finalize(self):
+        """
+        :return: None
+
+        This method is supposed to be called after all module builds are
+        successfully finished.
+
+        It could be utilized for various purposes such as cleaning or
+        running additional build-system based operations on top of
+        finished builds (e.g. for copr - composing them into module)
+        """
+        pass
+
     @classmethod
     @abstractmethod
     def repo_from_tag(self, config, tag_name, arch):

module_build_service/scheduler/handlers/repos.py

@@ -139,3 +139,4 @@ def done(config, session, msg):
     else:
         module_build.transition(config, state=models.BUILD_STATES['done'])
         session.commit()
+        builder.finalize()