Add repo purge callbacks and register TUF metadata deletion as one

app.py

@@ -210,6 +210,8 @@ database.configure(app.config)
 model.config.app_config = app.config
 model.config.store = storage
 model.config.register_image_cleanup_callback(secscan_api.cleanup_layers)
+model.config.register_repo_cleanup_callback(tuf_metadata_api.delete_metadata)
+
 
 @login_manager.user_loader
 def load_user(user_uuid):

data/model/__init__.py

@@ -111,9 +111,13 @@ class Config(object):
     self.app_config = None
     self.store = None
     self.image_cleanup_callbacks = []
+    self.repo_cleanup_callbacks = []
 
   def register_image_cleanup_callback(self, callback):
     self.image_cleanup_callbacks.append(callback)
+    
+  def register_repo_cleanup_callback(self, callback):
+    self.repo_cleanup_callbacks.append(callback)
 
 
 config = Config()

data/model/repository.py

@@ -105,6 +105,10 @@ def purge_repository(namespace_name, repository_name):
     return False
 
   fetched.delete_instance(recursive=True, delete_nullable=False)
+  
+  # Run callbacks
+  for callback in config.repo_cleanup_callbacks:
+    callback(namespace_name, repository_name)
 
   return True
 

endpoints/api/repository.py

@@ -420,9 +420,6 @@ class Repository(RepositoryParamResource):
     # Remove any builds from the queue.
     dockerfile_build_queue.delete_namespaced_items(namespace, repository)
     
-    if features.SIGNING:
-      tuf_metadata_api.delete_metadata(namespace, repository)
-
     log_action('delete_repo', namespace,
                {'repo': repository, 'namespace': namespace})
     return '', 204

util/tufmetadata/test/test_tufmetadata.py

@@ -1,11 +1,14 @@
 import pytest
 import requests
-from mock import mock
+from mock import mock,patch
 
 from flask import Flask
 
 from test import testconfig
+from test.fixtures import init_db_path
 from util.tufmetadata import api 
+from data import model
+
 
 valid_response = {
   'signed' : {
@@ -121,3 +124,12 @@ def test_delete_metadata_exception(response_code, exception):
     tuf_api = api.TUFMetadataAPI(app, app.config, client=client)
     response = tuf_api.delete_metadata('quay', 'quay')
     assert response == False
+
+
+def test_purge_repo(init_db_path):
+  app = Flask(__name__)
+  app.config.from_object(testconfig.TestConfig())
+  app.config["DB_URI"] = init_db_path
+  with patch('app.tuf_metadata_api') as mock_tuf:
+    model.repository.purge_repository("ns", "repo")
+    assert mock_tuf.delete_metadata.called_with("ns", "repo")