Issue 2813 - Catch missing sitescripts module and return empty list on adblockplus.org

filters/get_subscriptions.py

 # This file is part of the Adblock Plus website,
 # Copyright (C) 2006-2016 Eyeo GmbH
 #
 # Adblock Plus is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 3 as
 # published by the Free Software Foundation.
 #
 # Adblock Plus is distributed in the hope that it will be useful,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 # GNU General Public License for more details.
 #
 # You should have received a copy of the GNU General Public License
 # along with Adblock Plus.  If not, see <http://www.gnu.org/licenses/>.
 
 import codecs
 import os
 import tarfile
 import urllib
 from ConfigParser import SafeConfigParser
 
 def get_subscriptions(_):
-  from sitescripts.subscriptions import subscriptionParser
-
+  try:
+    from sitescripts.subscriptions import subscriptionParser
+  except ImportError as error:

[kzar, 2016/02/18 15:24:25]

Nit: You're not using error, so no point giving it a name.

[juliandoucette, 2016/02/19 17:00:10]

Done.

+    return []

[kzar, 2016/02/18 15:24:25]

We should also log a warning message here, so that the user is aware that we've
skipped grabbing the subscription list.

[juliandoucette, 2016/02/19 17:00:10]

Done.

   result = {}
   utf8_reader = codecs.getreader('utf8')
   source = urllib.urlopen("https://hg.adblockplus.org/subscriptionlist/archive/default.tar.gz")
   orig_get_settings = subscriptionParser.get_settings
   try:
     # Hack: monkey-patch subscriptionParser.get_settings()
     settings = SafeConfigParser()
     settings_handle = urllib.urlopen("https://hg.adblockplus.org/subscriptionlist/rawfile/default/settings")
     try:
       settings.readfp(utf8_reader(settings_handle))
@@ skipping 10 matching lines @@
         if filedata.unavailable:
           continue
 
         result[filedata.name] = filedata
   finally:
     source.close()
     subscriptionParser.get_settings = orig_get_settings
 
   subscriptionParser.calculate_supplemented(result)
   return result.values()