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"""
raven.contrib.flask
~~~~~~~~~~~~~~~~~~~
: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
try:
from flask_login import current_user
except ImportError:
has_flask_login = False
else:
has_flask_login = True
import logging
import blinker
from flask import request, current_app, g
from flask.signals import got_request_exception, request_finished
from werkzeug.exceptions import ClientDisconnected
from raven.conf import setup_logging
from raven.base import Client
from raven.middleware import Sentry as SentryMiddleware
from raven.handlers.logging import SentryHandler
from raven.utils.compat import urlparse
from raven.utils.encoding import to_unicode
from raven.utils.wsgi import get_headers, get_environ
from raven.utils.conf import convert_options
raven_signals = blinker.Namespace()
logging_configured = raven_signals.signal('logging_configured')
def make_client(client_cls, app, dsn=None):
return client_cls(
**convert_options(
app.config,
defaults={
'dsn': dsn,
'include_paths': (
set(app.config.get('SENTRY_INCLUDE_PATHS', []))
| set([app.import_name])
),
# support legacy RAVEN_IGNORE_EXCEPTIONS
'ignore_exceptions': app.config.get('RAVEN_IGNORE_EXCEPTIONS', []),
'extra': {
'app': app,
},
},
)
)
class Sentry(object):
"""
Flask application for Sentry.
Look up configuration from ``os.environ['SENTRY_DSN']``::
>>> sentry = Sentry(app)
Pass an arbitrary DSN::
>>> sentry = Sentry(app, dsn='http://public:secret@example.com/1')
Pass an explicit client::
>>> sentry = Sentry(app, client=client)
Automatically configure logging::
>>> sentry = Sentry(app, logging=True, level=logging.ERROR)
Capture an exception::
>>> try:
>>> 1 / 0
>>> except ZeroDivisionError:
>>> sentry.captureException()
Capture a message::
>>> sentry.captureMessage('hello, world!')
By default, the Flask integration will do the following:
- Hook into the `got_request_exception` signal. This can be disabled by
passing `register_signal=False`.
- Wrap the WSGI application. This can be disabled by passing
`wrap_wsgi=False`.
- Capture information from Flask-Login (if available).
"""
# TODO(dcramer): the client isn't using local context and therefore
# gets shared by every app that does init on it
def __init__(self, app=None, client=None, client_cls=Client, dsn=None,
logging=False, logging_exclusions=None, level=logging.NOTSET,
wrap_wsgi=None, register_signal=True):
if client and not isinstance(client, Client):
raise TypeError('client should be an instance of Client')
self.dsn = dsn
self.logging = logging
self.logging_exclusions = logging_exclusions
self.client_cls = client_cls
self.client = client
self.level = level
self.wrap_wsgi = wrap_wsgi
self.register_signal = register_signal
if app:
self.init_app(app)
@property
def last_event_id(self):
try:
return g.sentry_event_id
except Exception:
pass
return getattr(self, '_last_event_id', None)
@last_event_id.setter
def last_event_id(self, value):
self._last_event_id = value
try:
g.sentry_event_id = value
except Exception:
pass
def handle_exception(self, *args, **kwargs):
if not self.client:
return
# got_request_exception signal passes the exception as 'exception'
exception = kwargs.get('exception')
if exception is not None and hasattr(exception, '__traceback__'):
# On Python 3 we can contruct the exc_info via __traceback__
exc_info = (type(exception), exception, exception.__traceback__)
else:
# The user may call the method with 'exc_info' manually
exc_info = kwargs.get('exc_info')
self.captureException(exc_info=exc_info)
def get_user_info(self, request):
"""
Requires Flask-Login (https://pypi.python.org/pypi/Flask-Login/)
to be installed and setup.
"""
user_info = {}
try:
ip_address = request.access_route[0]
except IndexError:
ip_address = request.remote_addr
if ip_address:
user_info['ip_address'] = ip_address
if not has_flask_login:
return user_info
if not hasattr(current_app, 'login_manager'):
return user_info
try:
is_authenticated = current_user.is_authenticated
except AttributeError:
# HACK: catch the attribute error thrown by flask-login is not attached
# > current_user = LocalProxy(lambda: _request_ctx_stack.top.user)
# E AttributeError: 'RequestContext' object has no attribute 'user'
return user_info
if callable(is_authenticated):
is_authenticated = is_authenticated()
if not is_authenticated:
return user_info
user_info['id'] = current_user.get_id()
if 'SENTRY_USER_ATTRS' in current_app.config:
for attr in current_app.config['SENTRY_USER_ATTRS']:
if hasattr(current_user, attr):
user_info[attr] = getattr(current_user, attr)
return user_info
def get_http_info(self, request):
"""
Determine how to retrieve actual data by using request.mimetype.
"""
if self.is_json_type(request.mimetype):
retriever = self.get_json_data
else:
retriever = self.get_form_data
return self.get_http_info_with_retriever(request, retriever)
def is_json_type(self, content_type):
return content_type == 'application/json'
def get_form_data(self, request):
return request.form
def get_json_data(self, request):
return request.data
def get_http_info_with_retriever(self, request, retriever=None):
"""
Exact method for getting http_info but with form data work around.
"""
if retriever is None:
retriever = self.get_form_data
urlparts = urlparse.urlsplit(request.url)
try:
data = retriever(request)
except ClientDisconnected:
data = {}
return {
'url': '%s://%s%s' % (urlparts.scheme, urlparts.netloc, urlparts.path),
'query_string': urlparts.query,
'method': request.method,
'data': data,
'headers': dict(get_headers(request.environ)),
'env': dict(get_environ(request.environ)),
}
def before_request(self, *args, **kwargs):
self.last_event_id = None
if request.url_rule:
self.client.transaction.push(request.url_rule.rule)
try:
self.client.http_context(self.get_http_info(request))
except Exception as e:
self.client.logger.exception(to_unicode(e))
try:
self.client.user_context(self.get_user_info(request))
except Exception as e:
self.client.logger.exception(to_unicode(e))
def after_request(self, sender, response, *args, **kwargs):
if self.last_event_id:
response.headers['X-Sentry-ID'] = self.last_event_id
self.client.context.clear()
if request.url_rule:
self.client.transaction.pop(request.url_rule.rule)
return response
def init_app(self, app, dsn=None, logging=None, level=None,
logging_exclusions=None, wrap_wsgi=None,
register_signal=None):
if dsn is not None:
self.dsn = dsn
if level is not None:
self.level = level
if wrap_wsgi is not None:
self.wrap_wsgi = wrap_wsgi
elif self.wrap_wsgi is None:
# Fix https://github.com/getsentry/raven-python/issues/412
# the gist is that we get errors twice in debug mode if we don't do this
if app and app.debug:
self.wrap_wsgi = False
else:
self.wrap_wsgi = True
if register_signal is not None:
self.register_signal = register_signal
if logging is not None:
self.logging = logging
if logging_exclusions is not None:
self.logging_exclusions = logging_exclusions
if not self.client:
self.client = make_client(self.client_cls, app, self.dsn)
if self.logging:
kwargs = {}
if self.logging_exclusions is not None:
kwargs['exclude'] = self.logging_exclusions
handler = SentryHandler(self.client, level=self.level)
setup_logging(handler, **kwargs)
if app.logger.propagate is False:
app.logger.addHandler(handler)
logging_configured.send(
self, sentry_handler=SentryHandler, **kwargs)
if self.wrap_wsgi:
app.wsgi_app = SentryMiddleware(app.wsgi_app, self.client)
app.before_request(self.before_request)
request_finished.connect(self.after_request, sender=app)
if self.register_signal:
got_request_exception.connect(self.handle_exception, sender=app)
if not hasattr(app, 'extensions'):
app.extensions = {}
app.extensions['sentry'] = self
def captureException(self, *args, **kwargs):
assert self.client, 'captureException called before application configured'
result = self.client.captureException(*args, **kwargs)
if result:
self.last_event_id = self.client.get_ident(result)
else:
self.last_event_id = None
return result
def captureMessage(self, *args, **kwargs):
assert self.client, 'captureMessage called before application configured'
result = self.client.captureMessage(*args, **kwargs)
if result:
self.last_event_id = self.client.get_ident(result)
else:
self.last_event_id = None
return result
def user_context(self, *args, **kwargs):
assert self.client, 'user_context called before application configured'
return self.client.user_context(*args, **kwargs)
def tags_context(self, *args, **kwargs):
assert self.client, 'tags_context called before application configured'
return self.client.tags_context(*args, **kwargs)
def extra_context(self, *args, **kwargs):
assert self.client, 'extra_context called before application configured'
return self.client.extra_context(*args, **kwargs)