Package: x2gobroker Version: 0.0.4.0-3 Approximately half the time, wget -O - http://127.0.0.1/x2gobroker/ yields a 500 Internal Server Error. /var/log/x2gobroker/wsgi.log shows the following:
> wsgilog.log: Mon, 18 Mar 2019 16:01:12 ERROR Server got itself in trouble > Traceback (most recent call last): > File "/usr/lib/python3/dist-packages/wsgilog/__init__.py", line 192, in > __call__ > return self.application(environ, start_response) > File "/usr/lib/x2gobroker/wsgi/x2gobroker-wsgi", line 408, in _application > return _tornado_application(environ, start_response) > File "/usr/lib/python3/dist-packages/tornado/wsgi.py", line 83, in __call__ > return WSGIAdapter(self)(environ, start_response) > File "/usr/lib/python3/dist-packages/tornado/wsgi.py", line 242, in __call__ > self.application(request) > File "/usr/lib/python3/dist-packages/tornado/wsgi.py", line 207, in <lambda> > application, request) > File "/usr/lib/python3/dist-packages/tornado/web.py", line 2097, in __call__ > return dispatcher.execute() > File "/usr/lib/python3/dist-packages/tornado/web.py", line 2228, in execute > **self.path_kwargs) > File "/usr/lib/python3/dist-packages/tornado/gen.py", line 297, in wrapper > future = _create_future() > File "/usr/lib/python3/dist-packages/tornado/gen.py", line 187, in > _create_future > future = Future() > File "/usr/lib/python3.7/asyncio/events.py", line 644, in get_event_loop > % threading.current_thread().name) > RuntimeError: There is no current event loop in thread 'Dummy-1'. This issue appears to be the same as in this tornado bug: https://github.com/tornadoweb/tornado/issues/2371 The following workaround is suggested: > import asyncio > from tornado.platform.asyncio import AnyThreadEventLoopPolicy > asyncio.set_event_loop_policy(AnyThreadEventLoopPolicy()) The error disappeared after adding these lines right after "### launch as WSGI application ###" in /usr/bin/x2gobroker. I am using a freshly installed Debian testing VM with two vCPUs. I used the following command to install the packages: apt install apache2 x2gobroker x2gobroker-wsgi. To get this result I also had to apply the fixes to my two recent bug reports on x2gobroker and x2gobroker-wsgi.
