From: Itamar Turner-Trauring Date: Tue, 26 Mar 2013 19:02:11 +0000 (-0400) Subject: Retry cloud HTTP requests on *any* exception (the list is long, and hard to make... X-Git-Url: https://git.rkrishnan.org/%5B/%5D%20/uri/provisioning?a=commitdiff_plain;h=ffd1b1f4d63d51200915b76c054d927e88e78cba;p=tahoe-lafs%2Ftahoe-lafs.git Retry cloud HTTP requests on *any* exception (the list is long, and hard to make complete, so easier to just handle all exceptions). --- diff --git a/src/allmydata/storage/backends/cloud/cloud_common.py b/src/allmydata/storage/backends/cloud/cloud_common.py index ce3d2156..657d9662 100644 --- a/src/allmydata/storage/backends/cloud/cloud_common.py +++ b/src/allmydata/storage/backends/cloud/cloud_common.py @@ -340,7 +340,9 @@ class ContainerRetryMixin: Subclasses should define: ServiceError: - The error class to trap (CloudServiceError or similar). + An exceptions class with meaningful status codes that can be + filtered using _react_to_error. Other exceptions will cause + unconditional retries. and can override: _react_to_error(self, response_code): @@ -366,8 +368,6 @@ class ContainerRetryMixin: return d def _handle_error(self, f, trynum, first_err_and_tb, description, operation, *args, **kwargs): - f.trap(self.ServiceError, TimeoutError) - # Don't use f.getTracebackObject() since a fake traceback will not do for the 3-arg form of 'raise'. # tb can be None (which is acceptable for 3-arg raise) if we don't have a traceback. tb = getattr(f, 'tb', None) diff --git a/src/allmydata/test/test_storage.py b/src/allmydata/test/test_storage.py index 5dcad03c..52b13984 100644 --- a/src/allmydata/test/test_storage.py +++ b/src/allmydata/test/test_storage.py @@ -832,10 +832,12 @@ class ContainerRetryTests(unittest.TestCase, CloudStorageBackendMixin): second.callback(done) self.assertEqual(result, [done]) - def test_retry_timeout(self): + def test_retry_random_exception(self): """ - If an HTTP connection fails with a timeout, retry. + If a HTTP request fails with any exception at all, retry. """ + class NewException(Exception): + pass first, second = defer.Deferred(), defer.Deferred() self.container._http_request = mock.create_autospec( self.container._http_request, side_effect=[first, second]) @@ -852,8 +854,7 @@ class ContainerRetryTests(unittest.TestCase, CloudStorageBackendMixin): body=None, need_response_body=True) # First response fails: - from twisted.internet.error import TimeoutError - first.errback(TimeoutError()) + first.errback(NewException()) self.assertFalse(result, result) self.assertEqual(self.container._http_request.call_count, 1) self.reactor.advance(0.1)