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"""
raven.transport.gevent
~~~~~~~~~~~~~~~~~~~~~~
:copyright: (c) 2010-2012 by the Sentry Team, see AUTHORS for more details.
:license: BSD, see LICENSE for more details.
"""
from __future__ import absolute_import
from raven.transport.base import AsyncTransport
from raven.transport.http import HTTPTransport
try:
import gevent
# gevent 1.0bN renamed coros to lock
try:
from gevent.lock import Semaphore
except ImportError:
from gevent.coros import Semaphore # NOQA
has_gevent = True
except ImportError:
has_gevent = None
class GeventedHTTPTransport(AsyncTransport, HTTPTransport):
scheme = ['gevent+http', 'gevent+https']
def __init__(self, maximum_outstanding_requests=100, *args, **kwargs):
if not has_gevent:
raise ImportError('GeventedHTTPTransport requires gevent.')
self._lock = Semaphore(maximum_outstanding_requests)
super(GeventedHTTPTransport, self).__init__(*args, **kwargs)
def async_send(self, url, data, headers, success_cb, failure_cb):
"""
Spawn an async request to a remote webserver.
"""
# this can be optimized by making a custom self.send that does not
# read the response since we don't use it.
self._lock.acquire()
return gevent.spawn(
super(GeventedHTTPTransport, self).send, url, data, headers
).link(lambda x: self._done(x, success_cb, failure_cb))
def _done(self, greenlet, success_cb, failure_cb, *args):
self._lock.release()
if greenlet.successful():
success_cb()
else:
failure_cb(greenlet.exception)