Errors should be caught also before a request action is executed (prevents HTTP timeouts when the error is on e.g. get_plugin() level)

platypush/message/request/__init__.py

@@ -207,6 +207,7 @@ class Request(Message):
         def _thread_func(_n_tries, errors=None):
             response = None
 
+            try:
                 if self.action.startswith('procedure.'):
                     context['n_tries'] = _n_tries
                     response = self._execute_procedure(**context)
@@ -222,6 +223,13 @@ class Request(Message):
                     action = self.expand_value_from_context(self.action, **context)
                     (module_name, method_name) = get_module_and_method_from_action(action)
                     plugin = get_plugin(module_name)
+            except Exception as e:
+                logger.exception(e)
+                msg = 'Uncaught pre-processing exception from action [{}]: {}'.format(self.action, str(e))
+                logger.warning(msg)
+                response = Response(output=None, errors=[msg])
+                self._send_response(response)
+                return response
 
             try:
                 # Run the action