From 574377636ee4eafba50580fc4d7a1d0793774332 Mon Sep 17 00:00:00 2001 From: Mark Haines Date: Thu, 2 Oct 2014 14:09:15 +0100 Subject: [PATCH] Add a keyword argument to get_json to avoid retrying on DNS failures. Rather than passing MatrixHttpClient.RETRY_DNS_LOOKUP_FAILURES as a fake query string parameter --- synapse/federation/replication.py | 7 +++++-- synapse/federation/transport.py | 5 +++-- synapse/handlers/directory.py | 5 ++--- synapse/http/client.py | 9 +-------- tests/federation/test_federation.py | 5 +++-- tests/handlers/test_directory.py | 5 ++--- 6 files changed, 16 insertions(+), 20 deletions(-) diff --git a/synapse/federation/replication.py b/synapse/federation/replication.py index 96b82f00cb..5f96f79998 100644 --- a/synapse/federation/replication.py +++ b/synapse/federation/replication.py @@ -159,7 +159,8 @@ class ReplicationLayer(object): return defer.succeed(None) @log_function - def make_query(self, destination, query_type, args): + def make_query(self, destination, query_type, args, + retry_on_dns_fail=True): """Sends a federation Query to a remote homeserver of the given type and arguments. @@ -174,7 +175,9 @@ class ReplicationLayer(object): a Deferred which will eventually yield a JSON object from the response """ - return self.transport_layer.make_query(destination, query_type, args) + return self.transport_layer.make_query( + destination, query_type, args, retry_on_dns_fail=retry_on_dns_fail + ) @defer.inlineCallbacks @log_function diff --git a/synapse/federation/transport.py b/synapse/federation/transport.py index afc777ec9e..93296af204 100644 --- a/synapse/federation/transport.py +++ b/synapse/federation/transport.py @@ -193,13 +193,14 @@ class TransportLayer(object): @defer.inlineCallbacks @log_function - def make_query(self, destination, query_type, args): + def make_query(self, destination, query_type, args, retry_on_dns_fail): path = PREFIX + "/query/%s" % query_type response = yield self.client.get_json( destination=destination, path=path, - args=args + args=args, + retry_on_dns_fail=retry_on_dns_fail, ) defer.returnValue(response) diff --git a/synapse/handlers/directory.py b/synapse/handlers/directory.py index cec7737e09..a56830d520 100644 --- a/synapse/handlers/directory.py +++ b/synapse/handlers/directory.py @@ -18,7 +18,6 @@ from twisted.internet import defer from ._base import BaseHandler from synapse.api.errors import SynapseError -from synapse.http.client import MatrixHttpClient from synapse.api.events.room import RoomAliasesEvent import logging @@ -98,8 +97,8 @@ class DirectoryHandler(BaseHandler): query_type="directory", args={ "room_alias": room_alias.to_string(), - MatrixHttpClient.RETRY_DNS_LOOKUP_FAILURES: False - } + }, + retry_on_dns_fail=False, ) if result and "room_id" in result and "servers" in result: diff --git a/synapse/http/client.py b/synapse/http/client.py index e02cce5642..57b49355f2 100644 --- a/synapse/http/client.py +++ b/synapse/http/client.py @@ -183,7 +183,7 @@ class MatrixHttpClient(BaseHttpClient): defer.returnValue((response.code, body)) @defer.inlineCallbacks - def get_json(self, destination, path, args={}): + def get_json(self, destination, path, args={}, retry_on_dns_fail=True): """ Get's some json from the given host homeserver and path Args: @@ -203,13 +203,6 @@ class MatrixHttpClient(BaseHttpClient): """ logger.debug("get_json args: %s", args) - retry_on_dns_fail = True - if HttpClient.RETRY_DNS_LOOKUP_FAILURES in args: - # FIXME: This isn't ideal, but the interface exposed in get_json - # isn't comprehensive enough to give caller's any control over - # their connection mechanics. - retry_on_dns_fail = args.pop(HttpClient.RETRY_DNS_LOOKUP_FAILURES) - query_bytes = urllib.urlencode(args, True) logger.debug("Query bytes: %s Retry DNS: %s", args, retry_on_dns_fail) diff --git a/tests/federation/test_federation.py b/tests/federation/test_federation.py index bb17e9aafe..d95b9013a3 100644 --- a/tests/federation/test_federation.py +++ b/tests/federation/test_federation.py @@ -253,7 +253,7 @@ class FederationTestCase(unittest.TestCase): response = yield self.federation.make_query( destination="remote", query_type="a-question", - args={"one": "1", "two": "2"} + args={"one": "1", "two": "2"}, ) self.assertEquals({"your": "response"}, response) @@ -261,7 +261,8 @@ class FederationTestCase(unittest.TestCase): self.mock_http_client.get_json.assert_called_with( destination="remote", path="/_matrix/federation/v1/query/a-question", - args={"one": "1", "two": "2"} + args={"one": "1", "two": "2"}, + retry_on_dns_fail=True, ) @defer.inlineCallbacks diff --git a/tests/handlers/test_directory.py b/tests/handlers/test_directory.py index 0c31502dd4..e10a49a8ac 100644 --- a/tests/handlers/test_directory.py +++ b/tests/handlers/test_directory.py @@ -20,7 +20,6 @@ from twisted.internet import defer from mock import Mock from synapse.server import HomeServer -from synapse.http.client import MatrixHttpClient from synapse.handlers.directory import DirectoryHandler from synapse.storage.directory import RoomAliasMapping @@ -95,8 +94,8 @@ class DirectoryTestCase(unittest.TestCase): query_type="directory", args={ "room_alias": "#another:remote", - MatrixHttpClient.RETRY_DNS_LOOKUP_FAILURES: False - } + }, + retry_on_dns_fail=False, ) @defer.inlineCallbacks