-
Notifications
You must be signed in to change notification settings - Fork 104
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
Merge pull request #97 from IlyaSkriblovsky/replication-fix-and-tests
Failover fixed and covered with unittests
- Loading branch information
Showing
5 changed files
with
234 additions
and
38 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,150 @@ | ||
| # coding: utf-8 | ||
| # Copyright 2015 Ilya Skriblovsky <ilyaskriblovsky@gmail.com> | ||
| # | ||
| # Licensed under the Apache License, Version 2.0 (the "License"); | ||
| # you may not use this file except in compliance with the License. | ||
| # You may obtain a copy of the License at | ||
| # | ||
| # http://www.apache.org/licenses/LICENSE-2.0 | ||
| # | ||
| # Unless required by applicable law or agreed to in writing, software | ||
| # distributed under the License is distributed on an "AS IS" BASIS, | ||
| # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| # See the License for the specific language governing permissions and | ||
| # limitations under the License. | ||
|
|
||
| from bson.son import SON | ||
| from pymongo.errors import OperationFailure, AutoReconnect | ||
| from twisted.trial import unittest | ||
| from twisted.internet import defer, base, reactor | ||
| from txmongo.connection import MongoConnection, ConnectionPool, _Connection | ||
| from txmongo.protocol import QUERY_SLAVE_OK | ||
|
|
||
| from mongod import Mongod | ||
|
|
||
| # base.DelayedCall.debug = True | ||
|
|
||
|
|
||
| class TestReplicaSet(unittest.TestCase): | ||
|
|
||
| ports = [37017, 37018, 37019] | ||
| rsname = "rs1" | ||
|
|
||
| rsconfig = { | ||
| "_id": rsname, | ||
| "members": [ | ||
| {"_id": i, "host": "localhost:{0}".format(port) } | ||
| for i, port in enumerate(ports) | ||
| ] | ||
| } | ||
| # We assume first member to be master | ||
| rsconfig["members"][0]["priority"] = 2 | ||
|
|
||
| __init_timeout = 60 | ||
| __ping_interval = 0.5 | ||
|
|
||
| def __sleep(self, delay): | ||
| d = defer.Deferred() | ||
| reactor.callLater(delay, d.callback, None) | ||
| return d | ||
|
|
||
| @defer.inlineCallbacks | ||
| def setUp(self): | ||
| self.__mongod = [Mongod(port=p, replset=self.rsname) for p in self.ports] | ||
| yield defer.gatherResults([mongo.start() for mongo in self.__mongod]) | ||
|
|
||
| master_uri = "mongodb://localhost:{0}/?readPreference=secondaryPreferred".format(self.ports[0]) | ||
| master = ConnectionPool(master_uri) | ||
| yield master.admin["$cmd"].find_one({"replSetInitiate": self.rsconfig}) | ||
|
|
||
| ready = False | ||
| n_tries = int(self.__init_timeout / self.__ping_interval) | ||
| for i in xrange(n_tries): | ||
| yield self.__sleep(self.__ping_interval) | ||
|
|
||
| # My practice shows that we need to query both ismaster and replSetGetStatus | ||
| # to be sure that replica set is up and running, primary is elected and all | ||
| # secondaries are in sync and ready to became new primary | ||
|
|
||
| ismaster_req = master.admin["$cmd"].find_one({"ismaster": 1}) | ||
| replstatus_req = master.admin["$cmd"].find_one({"replSetGetStatus": 1}) | ||
| ismaster, replstatus = yield defer.gatherResults([ismaster_req, replstatus_req]) | ||
|
|
||
| initialized = replstatus["ok"] | ||
| ok_states = set(["PRIMARY", "SECONDARY"]) | ||
| states_ready = all(m["stateStr"] in ok_states for m in replstatus.get("members", [])) | ||
| ready = initialized and ismaster["ismaster"] and states_ready | ||
|
|
||
| if ready: | ||
| break | ||
|
|
||
| if not ready: | ||
| yield self.tearDown() | ||
| raise Exception("ReplicaSet initialization took more than {0}s".format(self.__init_timeout)) | ||
|
|
||
| yield master.disconnect() | ||
|
|
||
|
|
||
| @defer.inlineCallbacks | ||
| def tearDown(self): | ||
| yield defer.gatherResults([mongo.stop() for mongo in self.__mongod]) | ||
|
|
||
|
|
||
| @defer.inlineCallbacks | ||
| def test_WriteToMaster(self): | ||
| conn = MongoConnection("localhost", self.ports[0]) | ||
| try: | ||
| coll = conn.db.coll | ||
| yield coll.insert({'x': 42}, safe=True) | ||
| result = yield coll.find_one() | ||
| self.assertEqual(result['x'], 42) | ||
| finally: | ||
| yield conn.disconnect() | ||
|
|
||
| @defer.inlineCallbacks | ||
| def test_SlaveOk(self): | ||
| uri = "mongodb://localhost:{0}/?readPreference=secondaryPreferred".format(self.ports[1]) | ||
| conn = ConnectionPool(uri) | ||
| try: | ||
| empty = yield conn.db.coll.find(flags=QUERY_SLAVE_OK) | ||
| self.assertEqual(empty, []) | ||
|
|
||
| yield self.assertFailure(conn.db.coll.insert({'x': 42}), OperationFailure) | ||
| finally: | ||
| yield conn.disconnect() | ||
|
|
||
|
|
||
| @defer.inlineCallbacks | ||
| def test_SwitchToMasterOnConnect(self): | ||
| # Reverse hosts order | ||
| try: | ||
| conn = MongoConnection("localhost", self.ports[1]) | ||
| result = yield conn.db.coll.find({'x': 42}) | ||
| self.assertEqual(result, []) | ||
| finally: | ||
| yield conn.disconnect() | ||
|
|
||
| # txmongo will do log.err() for AutoReconnects | ||
| self.flushLoggedErrors(AutoReconnect) | ||
|
|
||
| @defer.inlineCallbacks | ||
| def test_AutoReconnect(self): | ||
| self.patch(_Connection, 'maxDelay', 5) | ||
|
|
||
| try: | ||
| uri = "mongodb://localhost:{0}/?w={1}".format(self.ports[0], len(self.ports)) | ||
| conn = ConnectionPool(uri) | ||
|
|
||
| yield conn.db.coll.insert({'x': 42}, safe = True) | ||
|
|
||
| yield self.__mongod[0].stop() | ||
|
|
||
| try: | ||
| result = yield conn.db.coll.find_one() | ||
| except AutoReconnect: | ||
| result = yield conn.db.coll.find_one() | ||
|
|
||
| self.assertEqual(result['x'], 42) | ||
| finally: | ||
| yield conn.disconnect() | ||
| self.flushLoggedErrors(AutoReconnect) |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Oops, something went wrong.