Resync webhooks from Admin

If the user delete the RTD webhook integration for whatever reason
from the project under the external service (GitHub, etc) when the
Resync button is pressed we re-create / setup the webhook as it was
never existed.

readthedocs/oauth/services/bitbucket.py

@@ -274,6 +274,12 @@ def update_webhook(self, project, integration):
                     project,
                 )
                 return (True, resp)
+
+            # Bitbucket returns 404 when the webhook doesn't exist. In this
+            # case, we call ``setup_webhook`` to re-configure it from scratch
+            if resp.status_code == 404:
+                return self.setup_webhook(project)
+
         # Catch exceptions with request or deserializing JSON
         except (KeyError, RequestException, ValueError):
             log.exception(

readthedocs/oauth/services/github.py

@@ -261,6 +261,12 @@ def update_webhook(self, project, integration):
                     project,
                 )
                 return (True, resp)
+
+            # GitHub returns 404 when the webhook doesn't exist. In this case,
+            # we call ``setup_webhook`` to re-configure it from scratch
+            if resp.status_code == 404:
+                return self.setup_webhook(project)
+
         # Catch exceptions with request or deserializing JSON
         except (RequestException, ValueError):
             log.exception(

readthedocs/oauth/services/gitlab.py

@@ -331,6 +331,12 @@ def update_webhook(self, project, integration):
                 log.info(
                     'GitLab webhook update successful for project: %s', project)
                 return (True, resp)
+
+            # GitLab returns 404 when the webhook doesn't exist. In this case,
+            # we call ``setup_webhook`` to re-configure it from scratch
+            if resp.status_code == 404:
+                return self.setup_webhook(project)
+
         # Catch exceptions with request or deserializing JSON
         except (RequestException, ValueError):
             log.exception(