Fix exception handling in the registry health check and make sure the user_loader is registered before the process is forked

endpoints/decorated.py

@@ -0,0 +1,19 @@
+import logging
+import json
+
+from flask import make_response
+from app import app
+from util.useremails import CannotSendEmailException
+from data import model
+
+logger = logging.getLogger(__name__)
+
+@app.errorhandler(model.DataModelException)
+def handle_dme(ex):
+  logger.exception(ex)
+  return make_response(json.dumps({'message': ex.message}), 400)
+
+@app.errorhandler(CannotSendEmailException)
+def handle_emailexception(ex):
+  message = 'Could not send email. Please contact an administrator and report this problem.'
+  return make_response(json.dumps({'message': message}), 400)