add logger to help debug travis

connexion/apis/aiohttp_api.py

@@ -60,19 +60,23 @@ def problems_middleware(request, handler):
     try:
         response = yield from handler(request)
     except ProblemException as exc:
+        logger.debug('ProblemException', exc_info=exc)
         response = exc.to_problem()
     except (werkzeug_HTTPException, _HttpNotFoundError) as exc:
+        logger.debug('problem from werkzeug', exc_info=exc)
         response = problem(status=exc.code, title=exc.name, detail=exc.description)
     except web.HTTPError as exc:
         if exc.text == "{}: {}".format(exc.status, exc.reason):
             detail = HTTPStatus(exc.status).description
         else:
             detail = exc.text
+        logger.debug('problem from web.HTTPError', exc_info=exc)
         response = problem(status=exc.status, title=exc.reason, detail=detail)
     except (
         web.HTTPException,  # eg raised HTTPRedirection or HTTPSuccessful
         asyncio.CancelledError,  # skipped in default web_protocol
-    ):
+    ) as exc:
+        logger.debug('re-raising exception', exc_info=exc)
         # leave this to default handling in aiohttp.web_protocol.RequestHandler.start()
         raise
     except asyncio.TimeoutError as exc:
@@ -84,6 +88,9 @@ def problems_middleware(request, handler):
         logger.exception('Error handling request', exc_info=exc)
         response = _generic_problem(HTTPStatus.INTERNAL_SERVER_ERROR, exc)
 
+    if isinstance(response, ProblemException):
+        logger.exception('response is a ProblemException', exc_info=response)
+
     if isinstance(response, ConnexionResponse):
         response = yield from AioHttpApi.get_response(response)
     return response