mongo-python-driver/test/test_replica_set_client.py at master · pythonthings/mongo-python-driver

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# 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 the mongo_replica_set_client module."""

import sys

import warnings

import time

sys.path[0:0] = [""]

from bson.codec_options import CodecOptions

from bson.son import SON

from pymongo.common import MAX_SUPPORTED_WIRE_VERSION, partition_node

from pymongo.errors import (AutoReconnect,

ConfigurationError,

ConnectionFailure,

NetworkTimeout,

NotMasterError,

OperationFailure)

from pymongo.mongo_client import MongoClient

from pymongo.mongo_replica_set_client import MongoReplicaSetClient

from pymongo.read_preferences import ReadPreference, Secondary, Nearest

from pymongo.write_concern import WriteConcern

from test import (client_context,

client_knobs,

IntegrationTest,

unittest,

SkipTest,

db_pwd,

db_user,

MockClientTest,

HAVE_IPADDRESS)

from test.pymongo_mocks import MockClient

from test.utils import (connected,

delay,

ignore_deprecations,

one,

rs_client,

single_client,

wait_until)

class TestReplicaSetClientBase(IntegrationTest):

@classmethod

@client_context.require_replica_set

def setUpClass(cls):

super(TestReplicaSetClientBase, cls).setUpClass()

cls.name = client_context.replica_set_name

cls.w = client_context.w

ismaster = client_context.ismaster

cls.hosts = set(partition_node(h.lower()) for h in ismaster['hosts'])

cls.arbiters = set(partition_node(h)

for h in ismaster.get("arbiters", []))

repl_set_status = client_context.client.admin.command(

'replSetGetStatus')

primary_info = [

m for m in repl_set_status['members']

if m['stateStr'] == 'PRIMARY'

][0]

cls.primary = partition_node(primary_info['name'].lower())

cls.secondaries = set(

partition_node(m['name'].lower())

for m in repl_set_status['members']

if m['stateStr'] == 'SECONDARY')

class TestReplicaSetClient(TestReplicaSetClientBase):

def test_deprecated(self):

with warnings.catch_warnings():

warnings.simplefilter("error", DeprecationWarning)

with self.assertRaises(DeprecationWarning):

MongoReplicaSetClient()

def test_connect(self):

client = MongoClient(

client_context.pair,

replicaSet='fdlksjfdslkjfd',

serverSelectionTimeoutMS=100)

with self.assertRaises(ConnectionFailure):

client.test.test.find_one()

def test_repr(self):

with ignore_deprecations():

client = MongoReplicaSetClient(

client_context.host,

client_context.port,

replicaSet=self.name)

self.assertIn("MongoReplicaSetClient(host=[", repr(client))

self.assertIn(client_context.pair, repr(client))

def test_properties(self):

c = client_context.client

c.admin.command('ping')

wait_until(lambda: c.primary == self.primary, "discover primary")

wait_until(lambda: c.arbiters == self.arbiters, "discover arbiters")

wait_until(lambda: c.secondaries == self.secondaries,

"discover secondaries")

self.assertEqual(c.primary, self.primary)

self.assertEqual(c.secondaries, self.secondaries)

self.assertEqual(c.arbiters, self.arbiters)

self.assertEqual(c.max_pool_size, 100)

# Make sure MongoClient's properties are copied to Database and

# Collection.

for obj in c, c.pymongo_test, c.pymongo_test.test:

self.assertEqual(obj.codec_options, CodecOptions())

self.assertEqual(obj.read_preference, ReadPreference.PRIMARY)

self.assertEqual(obj.write_concern, WriteConcern())

cursor = c.pymongo_test.test.find()

self.assertEqual(

ReadPreference.PRIMARY, cursor._read_preference())

tag_sets = [{'dc': 'la', 'rack': '2'}, {'foo': 'bar'}]

secondary = Secondary(tag_sets=tag_sets)

c = rs_client(

maxPoolSize=25,

document_class=SON,

tz_aware=True,

read_preference=secondary,

localThresholdMS=77,

j=True)

self.assertEqual(c.max_pool_size, 25)

for obj in c, c.pymongo_test, c.pymongo_test.test:

self.assertEqual(obj.codec_options, CodecOptions(SON, True))

self.assertEqual(obj.read_preference, secondary)

self.assertEqual(obj.write_concern, WriteConcern(j=True))

cursor = c.pymongo_test.test.find()

self.assertEqual(

secondary, cursor._read_preference())

nearest = Nearest(tag_sets=[{'dc': 'ny'}, {}])

cursor = c.pymongo_test.get_collection(

"test", read_preference=nearest).find()

self.assertEqual(nearest, cursor._read_preference())

self.assertEqual(c.max_bson_size, 16777216)

c.close()

@client_context.require_secondaries_count(1)

def test_timeout_does_not_mark_member_down(self):

# If a query times out, the client shouldn't mark the member "down".

# Disable background refresh.

with client_knobs(heartbeat_frequency=999999):

c = rs_client(socketTimeoutMS=3000, w=self.w)

collection = c.pymongo_test.test

collection.insert_one({})

# Query the primary.

self.assertRaises(

NetworkTimeout,

collection.find_one,

{'$where': delay(5)})

self.assertTrue(c.primary)

collection.find_one() # No error.

coll = collection.with_options(

read_preference=ReadPreference.SECONDARY)

# Query the secondary.

self.assertRaises(

NetworkTimeout,

coll.find_one,

{'$where': delay(5)})

self.assertTrue(c.secondaries)

# No error.

coll.find_one()

@client_context.require_ipv6

def test_ipv6(self):

if client_context.ssl:

if not HAVE_IPADDRESS:

raise SkipTest("Need the ipaddress module to test with SSL")

port = client_context.port

c = rs_client("mongodb://[::1]:%d" % (port,))

# Client switches to IPv4 once it has first ismaster response.

msg = 'discovered primary with IPv4 address "%r"' % (self.primary,)

wait_until(lambda: c.primary == self.primary, msg)

# Same outcome with both IPv4 and IPv6 seeds.

c = rs_client("mongodb://[::1]:%d,localhost:%d" % (port, port))

wait_until(lambda: c.primary == self.primary, msg)

if client_context.auth_enabled:

auth_str = "%s:%s@" % (db_user, db_pwd)

else:

auth_str = ""

uri = "mongodb://%slocalhost:%d,[::1]:%d" % (auth_str, port, port)

client = rs_client(uri)

client.pymongo_test.test.insert_one({"dummy": u"object"})

client.pymongo_test_bernie.test.insert_one({"dummy": u"object"})

dbs = client.list_database_names()

self.assertTrue("pymongo_test" in dbs)

self.assertTrue("pymongo_test_bernie" in dbs)

client.close()

def _test_kill_cursor_explicit(self, read_pref):

with client_knobs(kill_cursor_frequency=0.01):

c = rs_client(read_preference=read_pref, w=self.w)

db = c.pymongo_test

db.drop_collection("test")

test = db.test

test.insert_many([{"i": i} for i in range(20)])

# Partially evaluate cursor so it's left alive, then kill it

cursor = test.find().batch_size(10)

next(cursor)

self.assertNotEqual(0, cursor.cursor_id)

if read_pref == ReadPreference.PRIMARY:

msg = "Expected cursor's address to be %s, got %s" % (

c.primary, cursor.address)

self.assertEqual(cursor.address, c.primary, msg)

else:

self.assertNotEqual(

cursor.address, c.primary,

"Expected cursor's address not to be primary")

cursor_id = cursor.cursor_id

# Cursor dead on server - trigger a getMore on the same cursor_id

# and check that the server returns an error.

cursor2 = cursor.clone()

cursor2._Cursor__id = cursor_id

if sys.platform.startswith('java') or 'PyPy' in sys.version:

# Explicitly kill cursor.

cursor.close()

else:

# Implicitly kill it in CPython.

del cursor

time.sleep(5)

self.assertRaises(OperationFailure, lambda: list(cursor2))

def test_kill_cursor_explicit_primary(self):

self._test_kill_cursor_explicit(ReadPreference.PRIMARY)

@client_context.require_secondaries_count(1)

def test_kill_cursor_explicit_secondary(self):

self._test_kill_cursor_explicit(ReadPreference.SECONDARY)

@client_context.require_secondaries_count(1)

def test_not_master_error(self):

secondary_address = one(self.secondaries)

direct_client = single_client(*secondary_address)

with self.assertRaises(NotMasterError):

direct_client.pymongo_test.collection.insert_one({})

db = direct_client.get_database(

"pymongo_test", write_concern=WriteConcern(w=0))

with self.assertRaises(NotMasterError):

db.collection.insert_one({})

class TestReplicaSetWireVersion(MockClientTest):

@client_context.require_connection

@client_context.require_no_auth

def test_wire_version(self):

c = MockClient(

standalones=[],

members=['a:1', 'b:2', 'c:3'],

mongoses=[],

host='a:1',

replicaSet='rs',

connect=False)

c.set_wire_version_range('a:1', 3, 7)

c.set_wire_version_range('b:2', 2, 3)

c.set_wire_version_range('c:3', 3, 4)

c.db.command('ismaster') # Connect.

# A secondary doesn't overlap with us.

c.set_wire_version_range('b:2',

MAX_SUPPORTED_WIRE_VERSION + 1,

MAX_SUPPORTED_WIRE_VERSION + 2)

def raises_configuration_error():

try:

c.db.collection.find_one()

return False

except ConfigurationError:

return True

wait_until(raises_configuration_error,

'notice we are incompatible with server')

self.assertRaises(ConfigurationError, c.db.collection.insert_one, {})

class TestReplicaSetClientInternalIPs(MockClientTest):

@client_context.require_connection

def test_connect_with_internal_ips(self):

# Client is passed an IP it can reach, 'a:1', but the RS config

# only contains unreachable IPs like 'internal-ip'. PYTHON-608.

with self.assertRaises(AutoReconnect) as context:

connected(MockClient(

standalones=[],

members=['a:1'],

mongoses=[],

ismaster_hosts=['internal-ip:27017'],

host='a:1',

replicaSet='rs',

serverSelectionTimeoutMS=100))

self.assertEqual(

"Could not reach any servers in [('internal-ip', 27017)]."

" Replica set is configured with internal hostnames or IPs?",

str(context.exception))

class TestReplicaSetClientMaxWriteBatchSize(MockClientTest):

@client_context.require_connection

def test_max_write_batch_size(self):

c = MockClient(

standalones=[],

members=['a:1', 'b:2'],

mongoses=[],

host='a:1',

replicaSet='rs',

connect=False)

c.set_max_write_batch_size('a:1', 1)

c.set_max_write_batch_size('b:2', 2)

# Uses primary's max batch size.

self.assertEqual(c.max_write_batch_size, 1)

# b becomes primary.

c.mock_primary = 'b:2'

wait_until(lambda: c.max_write_batch_size == 2,

'update max_write_batch_size')

if __name__ == "__main__":

unittest.main()

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