Merge pull request getsentry#1028 from arnavk/arnav/logging_signal

Fire signal after setup_logging is called for Flask usage

Author: dcramer

Diff for: raven/contrib/flask.py

@@ -17,6 +17,7 @@
 
 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
@@ -31,6 +32,10 @@
 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(
@@ -270,7 +275,11 @@ def init_app(self, app, dsn=None, logging=None, level=None,
             if self.logging_exclusions is not None:
                 kwargs['exclude'] = self.logging_exclusions
 
-            setup_logging(SentryHandler(self.client, level=self.level), **kwargs)
+            handler = SentryHandler(self.client, level=self.level)
+            setup_logging(handler, **kwargs)
+
+            logging_configured.send(
+                self, sentry_handler=SentryHandler, **kwargs)
 
         if self.wrap_wsgi:
             app.wsgi_app = SentryMiddleware(app.wsgi_app, self.client)

Diff for: tests/contrib/flask/tests.py

@@ -1,14 +1,13 @@
 import logging
 
 from exam import before, fixture
-from mock import patch
-
 from flask import Flask, current_app, g
 from flask.ext.login import LoginManager, AnonymousUserMixin, login_user
+from mock import patch, Mock
 
-from raven.contrib.flask import Sentry
-from raven.utils.testutils import InMemoryClient, TestCase
+from raven.contrib.flask import Sentry, logging_configured
 from raven.handlers.logging import SentryHandler
+from raven.utils.testutils import InMemoryClient, TestCase
 
 
 class User(AnonymousUserMixin):
@@ -248,6 +247,24 @@ def test_logging_setup_with_exclusion_list(self):
         some_other_logger = logging.getLogger("some_other_logger")
         self.assertTrue(some_other_logger.propagate)
 
+    def test_logging_setup_singal(self):
+        app = Flask(__name__)
+
+        mock_handler = Mock()
+
+        def receiver(sender, *args, **kwargs):
+            self.assertIn("exclude", kwargs)
+            mock_handler(*args, **kwargs)
+
+        logging_configured.connect(receiver)
+        raven = InMemoryClient()
+
+        Sentry(
+            app, client=raven, logging=True,
+            logging_exclusions=("excluded_logger",))
+
+        mock_handler.assert_called()
+
     def test_check_client_type(self):
         self.assertRaises(TypeError, lambda _: Sentry(self.app, "oops, I'm putting my DSN instead"))