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filelogmiddleware.py
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from datetime import datetime import os import re import sys import urllib import urllib2 from django.conf import settings from django.http import Http404 class FileLogMiddleware(object): """Report Django exceptions to a file Only used for licensed Kiln installs, so that people don't worry about what data is getting sent back to Fog Creek.""" def process_response(self, request, response): if response.status_code == 404: domain = request.get_host() referer = request.META.get('HTTP_REFERER', None) path = request.get_full_path() is_internal = _is_internal_request(domain, referer) if referer and not _is_ignorable_404(path) and is_internal: ua = request.META.get('HTTP_USER_AGENT', '<none>') ip = request.META.get('REMOTE_ADDR', '<none>') bug = {'Description': 'Broken %slink %s on %s' % ((is_internal and 'INTERNAL ' or ''), request.path, domain), 'Extra': 'Referrer: %s\nRequested URL: %s\nUser agent:%s\nIP address: %s\n' \ % (referer, request.get_full_path(), ua, ip)} _log_error(bug) return response def process_exception(self, request, exception): bug = {} bug["Description"] = 'Error (%s IP): %s' % ((request.META.get('REMOTE_ADDR') in settings.INTERNAL_IPS and 'internal' or 'EXTERNAL'), request.path) try: request_repr = repr(request) except: request_repr = 'Request repr() unavailable' bug["Extra"] = '%s\n\n%s' % (_get_traceback(sys.exc_info()), request_repr) _log_error(bug) def _get_traceback(exc_info): """Helper function to return the traceback as a string""" import traceback return '\n'.join(traceback.format_exception(*(exc_info or sys.exc_info()))) def _is_internal_request(domain, referer): """Returns true if the referring URL is the same domain as the current request.""" return referer is not None and re.match("^https?://%s/" % re.escape(domain), referer) def _is_ignorable_404(uri): """Returns True if a 404 at the given URL *shouldn't* notify the site managers.""" for start in settings.IGNORABLE_404_STARTS: if uri.startswith(start): return True for end in settings.IGNORABLE_404_ENDS: if uri.endswith(end): return True return False def _log_error(bug): times = '=' plus = '\n' with open(os.path.join(settings.KILN_REPOSITORY_ROOT, r'errors.txt'), 'a') as f: f.write('%s\n' % datetime.utcnow().isoformat()) f.write(bug['Description']) f.write('\n\n') f.write(bug['Extra']) f.write(plus * 2 + times * 78 + plus * 3)