Allow setting the recursion limit with RECURSION_LIMIT (fixes #1911)

docker-compose.yml

@@ -20,6 +20,7 @@ worker: &worker
     - OLYMPIA_SITE_URL
     - PYTHONDONTWRITEBYTECODE=1
     - PYTHONUNBUFFERED=1
+    - RECURSION_LIMIT=10000
     - REDIS_LOCATION=redis://redis:6379/0?socket_timeout=0.5
     - TERM=xterm-256color
 

settings.py

@@ -8,6 +8,8 @@ import os
 
 from olympia.lib.settings_base import *  # noqa
 
+WSGI_APPLICATION = 'olympia.wsgi.application'
+
 DEBUG = True
 TEMPLATE_DEBUG = DEBUG
 DEBUG_PROPAGATE_EXCEPTIONS = False

src/olympia/wsgi.py

@@ -1,5 +1,6 @@
 import os
 import logging
+import sys
 from datetime import datetime
 
 log = logging.getLogger('z.startup')
@@ -7,6 +8,16 @@ log = logging.getLogger('z.startup')
 # Remember when mod_wsgi loaded this file so we can track it in nagios.
 wsgi_loaded = datetime.now()
 
+if 'RECURSION_LIMIT' in os.environ:
+    try:
+        limit = int(os.environ['RECURSION_LIMIT'])
+    except TypeError:
+        log.warning('Unable to parse RECURSION_LIMIT "{}"'.format(
+            os.environ['RECURSION_LIMIT']))
+    else:
+        sys.setrecursionlimit(limit)
+        log.info('Set RECURSION_LIMIT to {}'.format(limit))
+
 # Tell celery that we're using Django.
 os.environ['CELERY_LOADER'] = 'django'