trigger: initial custom git trigger

endpoints/api/trigger.py

@@ -212,15 +212,12 @@ class BuildTriggerActivate(RepositoryParamResource):
       token = model.create_delegate_token(namespace, repository, token_name,
                                           'write')
 
-      # Generate an SSH keypair
-      new_config_dict['public_key'], trigger.private_key = generate_ssh_keypair()
-
       try:
         path = url_for('webhooks.build_trigger_webhook', trigger_uuid=trigger.uuid)
         authed_url = _prepare_webhook_url(app.config['PREFERRED_URL_SCHEME'], '$token', token.code,
                                           app.config['SERVER_HOSTNAME'], path)
 
-        final_config = handler.activate(trigger.uuid, authed_url,
+        final_config, trigger.private_key = handler.activate(trigger.uuid, authed_url,
                                         trigger.auth_token, new_config_dict)
       except TriggerActivationException as exc:
         token.delete_instance()
@@ -512,3 +509,12 @@ class BuildTriggerSources(RepositoryParamResource):
       }
     else:
       raise Unauthorized()
+
+@resource('/v1/repository/<repopath:repository>/trigger/redirect')
+@path_param('repository', 'The full path of the repository. e.g. namespace/name')
+@internal_only
+class CustomBuildTriggerRedirect(RepositoryParamResource):
+  """ Custom verb to properly handle redirecting users using their own custom git hook. """
+  @nickname('customTriggerRedirect')
+  def get(self, namespace, repository):
+    pass