blob: cc4917c35a4b77efa2d09687b65732cf6efa7cef [file] [log] [blame]
# Copyright 2016 The Chromium Authors. All rights reserved.
# Use of this source code is governed by a BSD-style
# license that can be found in the LICENSE file or at
# https://developers.google.com/open-source/licenses/bsd
"""A class to log client-side javascript error reports.
Updates frontend/js_errors ts_mon metric.
"""
from __future__ import print_function
from __future__ import division
from __future__ import absolute_import
import json
import logging
from framework import jsonfeed
from infra_libs import ts_mon
class ClientMonitor(jsonfeed.JsonFeed):
"""JSON feed to track client side js errors in ts_mon."""
js_errors = ts_mon.CounterMetric('frontend/js_errors',
'Number of uncaught client-side JS errors.',
None)
def HandleRequest(self, mr):
"""Build up a dictionary of data values to use when rendering the page.
Args:
mr: commonly used info parsed from the request.
Returns:
Dict of values used by EZT for rendering the page.
"""
post_data = mr.request.POST
errors = post_data.get('errors')
try:
errors = json.loads(errors)
total_errors = 0
for error_key in errors:
total_errors += errors[error_key]
logging.error('client monitor report (%d): %s', total_errors,
post_data.get('errors'))
self.js_errors.increment_by(total_errors)
except Exception as e:
logging.error('Problem processing client monitor report: %r', e)
return {}