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test_master_slave_connection.py
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test_master_slave_connection.py
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# Copyright 2009 10gen, Inc.
#
# 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.
"""Test for master slave connections."""
import unittest
import os
import time
import sys
sys.path[0:0] = [""]
from nose.plugins.skip import SkipTest
from pymongo.errors import ConnectionFailure, InvalidName
from pymongo.errors import CollectionInvalid, OperationFailure
from pymongo.database import Database
from pymongo.connection import Connection
from pymongo.collection import Collection
from pymongo.master_slave_connection import MasterSlaveConnection
class TestMasterSlaveConnection(unittest.TestCase):
def setUp(self):
host = os.environ.get("DB_IP", "localhost")
self.master = Connection(host, int(os.environ.get("DB_PORT", 27017)))
self.slaves = []
try:
self.slaves.append(Connection(os.environ.get("DB_IP2", host),
int(os.environ.get("DB_PORT2",
27018)),
slave_okay=True))
except ConnectionFailure:
pass
try:
self.slaves.append(Connection(os.environ.get("DB_IP3", host),
int(os.environ.get("DB_PORT3",
27019)),
slave_okay=True))
except ConnectionFailure:
pass
if not self.slaves:
raise SkipTest()
self.connection = MasterSlaveConnection(self.master, self.slaves)
self.db = self.connection.pymongo_test
def test_types(self):
self.assertRaises(TypeError, MasterSlaveConnection, 1)
self.assertRaises(TypeError, MasterSlaveConnection, self.master, 1)
self.assertRaises(TypeError, MasterSlaveConnection, self.master, [1])
def test_repr(self):
self.assertEqual(repr(self.connection),
"MasterSlaveConnection(%r, %r)" %
(self.master, self.slaves))
def test_get_db(self):
def make_db(base, name):
return base[name]
self.assertRaises(InvalidName, make_db, self.connection, "")
self.assertRaises(InvalidName, make_db, self.connection, "te$t")
self.assertRaises(InvalidName, make_db, self.connection, "te.t")
self.assertRaises(InvalidName, make_db, self.connection, "te\\t")
self.assertRaises(InvalidName, make_db, self.connection, "te/t")
self.assertRaises(InvalidName, make_db, self.connection, "te st")
self.assert_(isinstance(self.connection.test, Database))
self.assertEqual(self.connection.test, self.connection["test"])
self.assertEqual(self.connection.test, Database(self.connection,
"test"))
def test_database_names(self):
self.connection.pymongo_test.test.save({"dummy": u"object"})
self.connection.pymongo_test_mike.test.save({"dummy": u"object"})
dbs = self.connection.database_names()
self.assert_("pymongo_test" in dbs)
self.assert_("pymongo_test_mike" in dbs)
def test_drop_database(self):
self.assertRaises(TypeError, self.connection.drop_database, 5)
self.assertRaises(TypeError, self.connection.drop_database, None)
self.connection.pymongo_test.test.save({"dummy": u"object"})
dbs = self.connection.database_names()
self.assert_("pymongo_test" in dbs)
self.connection.drop_database("pymongo_test")
dbs = self.connection.database_names()
self.assert_("pymongo_test" not in dbs)
self.connection.pymongo_test.test.save({"dummy": u"object"})
dbs = self.connection.database_names()
self.assert_("pymongo_test" in dbs)
self.connection.drop_database(self.connection.pymongo_test)
dbs = self.connection.database_names()
self.assert_("pymongo_test" not in dbs)
def test_iteration(self):
def iterate():
[a for a in self.connection]
self.assertRaises(TypeError, iterate)
def test_insert_find_one_in_request(self):
count = 0
for i in range(100):
self.connection.start_request()
self.db.test.remove({})
self.db.test.insert({"x": i})
try:
if i != self.db.test.find_one()["x"]:
count += 1
except:
count += 1
self.connection.end_request()
self.failIf(count)
def test_insert_find_one_no_slaves(self):
if self.slaves:
raise SkipTest()
count = 0
for i in range(100):
self.db.test.remove({})
self.db.test.insert({"x": i})
try:
if i != self.db.test.find_one()["x"]:
count += 1
except:
count += 1
self.failIf(count)
# This was failing because commands were being sent to the slaves
def test_create_collection(self):
self.connection.drop_database('pymongo_test')
collection = self.db.create_collection('test')
self.assert_(isinstance(collection, Collection))
self.assertRaises(CollectionInvalid, self.db.create_collection, 'test')
# Believe this was failing for the same reason...
def test_unique_index(self):
self.connection.drop_database('pymongo_test')
self.db.test.create_index('username', unique=True)
self.db.test.save({'username': 'mike'}, safe=True)
self.assertRaises(OperationFailure, self.db.test.save, {'username': 'mike'}, safe=True)
# NOTE this test is non-deterministic, but I expect
# some failures unless the db is pulling instantaneously...
def test_insert_find_one_with_slaves(self):
if not self.slaves:
raise SkipTest()
count = 0
for i in range(100):
self.db.test.remove({})
self.db.test.insert({"x": i})
try:
if i != self.db.test.find_one()["x"]:
count += 1
except:
count += 1
self.assert_(count)
# NOTE this test is non-deterministic, but hopefully we pause long enough
# for the slaves to pull...
def test_insert_find_one_with_pause(self):
if not self.slaves:
raise SkipTest()
count = 0
self.db.test.remove({})
self.db.test.insert({"x": 5586})
time.sleep(7)
for _ in range(10):
try:
if 5586 != self.db.test.find_one()["x"]:
count += 1
except:
count += 1
self.failIf(count)
def test_kill_cursors(self):
def cursor_count():
count = 0
res = self.connection.master.test_pymongo._command({
"cursorInfo": 1})
count += res["clientCursors_size"]
for slave in self.connection.slaves:
res = slave.test_pymongo._command({"cursorInfo": 1})
count += res["clientCursors_size"]
return count
self.connection.test_pymongo.drop_collection("test")
db = self.db
before = cursor_count()
for i in range(10000):
db.test.insert({"i": i})
time.sleep(6) # need to sleep to be sure this gets pulled...
self.assertEqual(before, cursor_count())
for _ in range(10):
db.test.find_one()
self.assertEqual(before, cursor_count())
for _ in range(10):
for x in db.test.find():
break
self.assertEqual(before, cursor_count())
a = db.test.find()
for x in a:
break
self.assertNotEqual(before, cursor_count())
del a
self.assertEqual(before, cursor_count())
a = db.test.find().limit(10)
for x in a:
break
self.assertEqual(before, cursor_count())
if __name__ == "__main__":
unittest.main()