middleware.py

import logging

from django.conf import settings as django_settings

from opbeat.contrib.django.models import client


def _is_ignorable_404(uri):
    """
    Returns True if the given request *shouldn't* notify the site managers.
    """
    urls = getattr(django_settings, 'IGNORABLE_404_URLS', ())
    return any(pattern.search(uri) for pattern in urls)


class Opbeat404CatchMiddleware(object):
    def process_response(self, request, response):
        if (response.status_code != 404
                or _is_ignorable_404(request.get_full_path())):
            return response
        data = client.get_data_from_request(request)
        data.update({
            'level': logging.INFO,
            'logger': 'http404',
        })
        result = client.capture_message(
            message='Page Not Found: %s' % request.build_absolute_uri(),
            data=data,
        )
        request.opbeat = {
            'app_id': data.get('app_id', client.app_id),
            'id': client.get_ident(result),
        }
        return response