587 lines
19 KiB
Python
587 lines
19 KiB
Python
# Copyright 2012-2014 MongoDB, 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.
|
|
|
|
"""Utilities for testing pymongo
|
|
"""
|
|
|
|
import os
|
|
import struct
|
|
import sys
|
|
import threading
|
|
import time
|
|
|
|
from pymongo import MongoClient, MongoReplicaSetClient
|
|
from pymongo.errors import AutoReconnect, OperationFailure
|
|
from pymongo.pool import NO_REQUEST, NO_SOCKET_YET, SocketInfo
|
|
from pymongo.server_selectors import (any_server_selector,
|
|
writable_server_selector)
|
|
from test import (client_context,
|
|
db_user,
|
|
db_pwd)
|
|
from test.version import Version
|
|
|
|
|
|
def get_client(*args, **kwargs):
|
|
client = MongoClient(*args, **kwargs)
|
|
if client_context.auth_enabled and kwargs.get("connect", True):
|
|
client.admin.authenticate(db_user, db_pwd)
|
|
return client
|
|
|
|
|
|
def get_rs_client(*args, **kwargs):
|
|
client = MongoReplicaSetClient(*args, **kwargs)
|
|
if client_context.auth_enabled and kwargs.get("_connect", True):
|
|
client.admin.authenticate(db_user, db_pwd)
|
|
return client
|
|
|
|
|
|
# No functools in Python 2.4
|
|
def my_partial(f, *args, **kwargs):
|
|
def _f(*new_args, **new_kwargs):
|
|
final_kwargs = kwargs.copy()
|
|
final_kwargs.update(new_kwargs)
|
|
return f(*(args + new_args), **final_kwargs)
|
|
|
|
return _f
|
|
|
|
def one(s):
|
|
"""Get one element of a set"""
|
|
return next(iter(s))
|
|
|
|
def oid_generated_on_client(oid):
|
|
"""Is this process's PID in this ObjectId?"""
|
|
pid_from_doc = struct.unpack(">H", oid.binary[7:9])[0]
|
|
return (os.getpid() % 0xFFFF) == pid_from_doc
|
|
|
|
def delay(sec):
|
|
# Javascript sleep() only available in MongoDB since version ~1.9
|
|
return '''function() {
|
|
var d = new Date((new Date()).getTime() + %s * 1000);
|
|
while (d > (new Date())) { }; return true;
|
|
}''' % sec
|
|
|
|
def get_command_line(client):
|
|
command_line = client.admin.command('getCmdLineOpts')
|
|
assert command_line['ok'] == 1, "getCmdLineOpts() failed"
|
|
return command_line
|
|
|
|
def server_started_with_option(client, cmdline_opt, config_opt):
|
|
"""Check if the server was started with a particular option.
|
|
|
|
:Parameters:
|
|
- `cmdline_opt`: The command line option (i.e. --nojournal)
|
|
- `config_opt`: The config file option (i.e. nojournal)
|
|
"""
|
|
command_line = get_command_line(client)
|
|
if 'parsed' in command_line:
|
|
parsed = command_line['parsed']
|
|
if config_opt in parsed:
|
|
return parsed[config_opt]
|
|
argv = command_line['argv']
|
|
return cmdline_opt in argv
|
|
|
|
|
|
def server_started_with_auth(client):
|
|
try:
|
|
command_line = get_command_line(client)
|
|
except OperationFailure as e:
|
|
msg = e.details.get('errmsg', '')
|
|
if e.code == 13 or 'unauthorized' in msg or 'login' in msg:
|
|
# Unauthorized.
|
|
return True
|
|
raise
|
|
|
|
# MongoDB >= 2.0
|
|
if 'parsed' in command_line:
|
|
parsed = command_line['parsed']
|
|
# MongoDB >= 2.6
|
|
if 'security' in parsed:
|
|
security = parsed['security']
|
|
# >= rc3
|
|
if 'authorization' in security:
|
|
return security['authorization'] == 'enabled'
|
|
# < rc3
|
|
return security.get('auth', False) or bool(security.get('keyFile'))
|
|
return parsed.get('auth', False) or bool(parsed.get('keyFile'))
|
|
# Legacy
|
|
argv = command_line['argv']
|
|
return '--auth' in argv or '--keyFile' in argv
|
|
|
|
|
|
def server_started_with_nojournal(client):
|
|
command_line = get_command_line(client)
|
|
|
|
# MongoDB 2.6.
|
|
if 'parsed' in command_line:
|
|
parsed = command_line['parsed']
|
|
if 'storage' in parsed:
|
|
storage = parsed['storage']
|
|
if 'journal' in storage:
|
|
return not storage['journal']['enabled']
|
|
|
|
return server_started_with_option(client, '--nojournal', 'nojournal')
|
|
|
|
|
|
def server_is_master_with_slave(client):
|
|
command_line = get_command_line(client)
|
|
if 'parsed' in command_line:
|
|
return command_line['parsed'].get('master', False)
|
|
return '--master' in command_line['argv']
|
|
|
|
def drop_collections(db):
|
|
for coll in db.collection_names():
|
|
if not coll.startswith('system'):
|
|
db.drop_collection(coll)
|
|
|
|
def remove_all_users(db):
|
|
if Version.from_client(db.connection).at_least(2, 5, 3, -1):
|
|
db.command("dropAllUsersFromDatabase", 1,
|
|
writeConcern={"w": client_context.w})
|
|
else:
|
|
db.system.users.remove({}, w=client_context.w)
|
|
|
|
|
|
def joinall(threads):
|
|
"""Join threads with a 5-minute timeout, assert joins succeeded"""
|
|
for t in threads:
|
|
t.join(300)
|
|
assert not t.isAlive(), "Thread %s hung" % t
|
|
|
|
def connected(client):
|
|
"""Convenience to wait for a newly-constructed client to connect."""
|
|
client.admin.command('ismaster') # Force connection.
|
|
return client
|
|
|
|
def wait_until(predicate, success_description, timeout=10):
|
|
"""Wait up to 10 seconds (by default) for predicate to be True.
|
|
|
|
E.g.:
|
|
|
|
wait_until(lambda: client.primary == ('a', 1),
|
|
'connect to the primary')
|
|
|
|
If the lambda-expression isn't true after 10 seconds, we raise
|
|
AssertionError("Didn't ever connect to the primary").
|
|
"""
|
|
start = time.time()
|
|
while not predicate():
|
|
if time.time() - start > timeout:
|
|
raise AssertionError("Didn't ever %s" % success_description)
|
|
|
|
def is_mongos(client):
|
|
res = client.admin.command('ismaster')
|
|
return res.get('msg', '') == 'isdbgrid'
|
|
|
|
def enable_text_search(client):
|
|
client.admin.command(
|
|
'setParameter', textSearchEnabled=True)
|
|
|
|
if isinstance(client, MongoReplicaSetClient):
|
|
for host, port in client.secondaries:
|
|
client = MongoClient(host, port)
|
|
if client_context.auth_enabled:
|
|
client.admin.authenticate(db_user, db_pwd)
|
|
client.admin.command('setParameter', textSearchEnabled=True)
|
|
|
|
def assertRaisesExactly(cls, fn, *args, **kwargs):
|
|
"""
|
|
Unlike the standard assertRaises, this checks that a function raises a
|
|
specific class of exception, and not a subclass. E.g., check that
|
|
MongoClient() raises ConnectionFailure but not its subclass, AutoReconnect.
|
|
"""
|
|
try:
|
|
fn(*args, **kwargs)
|
|
except Exception as e:
|
|
assert e.__class__ == cls, "got %s, expected %s" % (
|
|
e.__class__.__name__, cls.__name__)
|
|
else:
|
|
raise AssertionError("%s not raised" % cls)
|
|
|
|
|
|
class RendezvousThread(threading.Thread):
|
|
"""A thread that starts and pauses at a rendezvous point before resuming.
|
|
To be used in tests that must ensure that N threads are all alive
|
|
simultaneously, regardless of thread-scheduling's vagaries.
|
|
|
|
1. Write a subclass of RendezvousThread and override before_rendezvous
|
|
and / or after_rendezvous.
|
|
2. Create a state with RendezvousThread.shared_state(N)
|
|
3. Start N of your subclassed RendezvousThreads, passing the state to each
|
|
one's __init__
|
|
4. In the main thread, call RendezvousThread.wait_for_rendezvous
|
|
5. Test whatever you need to test while threads are paused at rendezvous
|
|
point
|
|
6. In main thread, call RendezvousThread.resume_after_rendezvous
|
|
7. Join all threads from main thread
|
|
8. Assert that all threads' "passed" attribute is True
|
|
9. Test post-conditions
|
|
"""
|
|
class RendezvousState(object):
|
|
def __init__(self, nthreads):
|
|
# Number of threads total
|
|
self.nthreads = nthreads
|
|
|
|
# Number of threads that have arrived at rendezvous point
|
|
self.arrived_threads = 0
|
|
self.arrived_threads_lock = threading.Lock()
|
|
|
|
# Set when all threads reach rendezvous
|
|
self.ev_arrived = threading.Event()
|
|
|
|
# Set by resume_after_rendezvous() so threads can continue.
|
|
self.ev_resume = threading.Event()
|
|
|
|
|
|
@classmethod
|
|
def create_shared_state(cls, nthreads):
|
|
return RendezvousThread.RendezvousState(nthreads)
|
|
|
|
def before_rendezvous(self):
|
|
"""Overridable: Do this before the rendezvous"""
|
|
pass
|
|
|
|
def after_rendezvous(self):
|
|
"""Overridable: Do this after the rendezvous. If it throws no exception,
|
|
`passed` is set to True
|
|
"""
|
|
pass
|
|
|
|
@classmethod
|
|
def wait_for_rendezvous(cls, state):
|
|
"""Wait for all threads to reach rendezvous and pause there"""
|
|
state.ev_arrived.wait(10)
|
|
assert state.ev_arrived.isSet(), "Thread timeout"
|
|
assert state.nthreads == state.arrived_threads
|
|
|
|
@classmethod
|
|
def resume_after_rendezvous(cls, state):
|
|
"""Tell all the paused threads to continue"""
|
|
state.ev_resume.set()
|
|
|
|
def __init__(self, state):
|
|
"""Params:
|
|
`state`: A shared state object from RendezvousThread.shared_state()
|
|
"""
|
|
super(RendezvousThread, self).__init__()
|
|
self.state = state
|
|
self.passed = False
|
|
|
|
# If this thread fails to terminate, don't hang the whole program
|
|
self.setDaemon(True)
|
|
|
|
def _rendezvous(self):
|
|
"""Pause until all threads arrive here"""
|
|
s = self.state
|
|
s.arrived_threads_lock.acquire()
|
|
s.arrived_threads += 1
|
|
if s.arrived_threads == s.nthreads:
|
|
s.arrived_threads_lock.release()
|
|
s.ev_arrived.set()
|
|
else:
|
|
s.arrived_threads_lock.release()
|
|
s.ev_arrived.wait()
|
|
|
|
def run(self):
|
|
try:
|
|
self.before_rendezvous()
|
|
finally:
|
|
self._rendezvous()
|
|
|
|
# all threads have passed the rendezvous, wait for
|
|
# resume_after_rendezvous()
|
|
self.state.ev_resume.wait()
|
|
|
|
self.after_rendezvous()
|
|
self.passed = True
|
|
|
|
def read_from_which_host(
|
|
rsc,
|
|
pref,
|
|
tag_sets=None,
|
|
secondary_acceptable_latency_ms=None
|
|
):
|
|
"""Read from a MongoReplicaSetClient with the given Read Preference mode,
|
|
tags, and acceptable latency. Return the 'host:port' which was read from.
|
|
|
|
:Parameters:
|
|
- `rsc`: A MongoReplicaSetClient
|
|
- `mode`: A ReadPreference
|
|
- `tag_sets`: List of dicts of tags for data-center-aware reads
|
|
"""
|
|
db = rsc.pymongo_test
|
|
|
|
if isinstance(tag_sets, dict):
|
|
tag_sets = [tag_sets]
|
|
if tag_sets or secondary_acceptable_latency_ms:
|
|
latency = secondary_acceptable_latency_ms or pref.latency_threshold_ms
|
|
tags = tag_sets or pref.tag_sets
|
|
pref = pref.__class__(latency, tags)
|
|
|
|
db.read_preference = pref
|
|
|
|
cursor = db.test.find()
|
|
try:
|
|
try:
|
|
next(cursor)
|
|
except StopIteration:
|
|
# No documents in collection, that's fine
|
|
pass
|
|
|
|
return cursor._Cursor__connection_id
|
|
except AutoReconnect:
|
|
return None
|
|
|
|
def assertReadFrom(testcase, rsc, member, *args, **kwargs):
|
|
"""Check that a query with the given mode and tag_sets reads from
|
|
the expected replica-set member.
|
|
|
|
:Parameters:
|
|
- `testcase`: A unittest.TestCase
|
|
- `rsc`: A MongoReplicaSetClient
|
|
- `member`: A host:port expected to be used
|
|
- `mode`: A ReadPreference
|
|
- `tag_sets` (optional): List of dicts of tags for data-center-aware reads
|
|
"""
|
|
for _ in range(10):
|
|
testcase.assertEqual(member, read_from_which_host(rsc, *args, **kwargs))
|
|
|
|
def assertReadFromAll(testcase, rsc, members, *args, **kwargs):
|
|
"""Check that a query with the given mode and tag_sets reads from all
|
|
members in a set, and only members in that set.
|
|
|
|
:Parameters:
|
|
- `testcase`: A unittest.TestCase
|
|
- `rsc`: A MongoReplicaSetClient
|
|
- `members`: Sequence of host:port expected to be used
|
|
- `mode`: A ReadPreference
|
|
- `tag_sets` (optional): List of dicts of tags for data-center-aware reads
|
|
"""
|
|
members = set(members)
|
|
used = set()
|
|
for _ in range(100):
|
|
used.add(read_from_which_host(rsc, *args, **kwargs))
|
|
|
|
testcase.assertEqual(members, used)
|
|
|
|
def get_pool(client):
|
|
topology = client._get_topology()
|
|
server = topology.select_server(writable_server_selector)
|
|
return server.pool
|
|
|
|
def pools_from_rs_client(client):
|
|
"""Get Pool instances from a MongoReplicaSetClient.
|
|
"""
|
|
return [
|
|
server.pool for server in
|
|
client._get_topology().select_servers(any_server_selector)]
|
|
|
|
class TestRequestMixin(object):
|
|
"""Inherit from this class and from unittest.TestCase to get some
|
|
convenient methods for testing connection pools and requests
|
|
"""
|
|
def assertSameSock(self, pool):
|
|
sock_info0 = pool.get_socket(all_credentials={})
|
|
sock_info1 = pool.get_socket(all_credentials={})
|
|
self.assertEqual(sock_info0, sock_info1)
|
|
pool.maybe_return_socket(sock_info0)
|
|
pool.maybe_return_socket(sock_info1)
|
|
|
|
def assertDifferentSock(self, pool):
|
|
sock_info0 = pool.get_socket(all_credentials={})
|
|
sock_info1 = pool.get_socket(all_credentials={})
|
|
self.assertNotEqual(sock_info0, sock_info1)
|
|
pool.maybe_return_socket(sock_info0)
|
|
pool.maybe_return_socket(sock_info1)
|
|
|
|
def assertNoRequest(self, pool):
|
|
self.assertEqual(NO_REQUEST, pool._get_request_state())
|
|
|
|
def assertNoSocketYet(self, pool):
|
|
self.assertEqual(NO_SOCKET_YET, pool._get_request_state())
|
|
|
|
def assertRequestSocket(self, pool):
|
|
self.assertTrue(isinstance(pool._get_request_state(), SocketInfo))
|
|
|
|
def assertInRequestAndSameSock(self, client, pools):
|
|
self.assertTrue(client.in_request())
|
|
if not isinstance(pools, list):
|
|
pools = [pools]
|
|
for pool in pools:
|
|
self.assertTrue(pool.in_request())
|
|
self.assertSameSock(pool)
|
|
|
|
def assertNotInRequestAndDifferentSock(self, client, pools):
|
|
self.assertFalse(client.in_request())
|
|
if not isinstance(pools, list):
|
|
pools = [pools]
|
|
for pool in pools:
|
|
self.assertFalse(pool.in_request())
|
|
self.assertDifferentSock(pool)
|
|
|
|
|
|
# Constants for run_threads and _TestLazyConnectMixin.
|
|
NTRIALS = 5
|
|
NTHREADS = 10
|
|
|
|
|
|
def run_threads(collection, target):
|
|
"""Run a target function in many threads.
|
|
|
|
target is a function taking a Collection and an integer.
|
|
"""
|
|
threads = []
|
|
for i in range(NTHREADS):
|
|
bound_target = my_partial(target, collection, i)
|
|
threads.append(threading.Thread(target=bound_target))
|
|
|
|
for t in threads:
|
|
t.start()
|
|
|
|
for t in threads:
|
|
t.join(30)
|
|
assert not t.isAlive()
|
|
|
|
|
|
def lazy_client_trial(reset, target, test, get_client):
|
|
"""Test concurrent operations on a lazily-connecting client.
|
|
|
|
`reset` takes a collection and resets it for the next trial.
|
|
|
|
`target` takes a lazily-connecting collection and an index from
|
|
0 to NTHREADS, and performs some operation, e.g. an insert.
|
|
|
|
`test` takes the lazily-connecting collection and asserts a
|
|
post-condition to prove `target` succeeded.
|
|
"""
|
|
collection = client_context.client.pymongo_test.test
|
|
|
|
# Make concurrency bugs more likely to manifest.
|
|
interval = None
|
|
if not sys.platform.startswith('java'):
|
|
if hasattr(sys, 'getswitchinterval'):
|
|
interval = sys.getswitchinterval()
|
|
sys.setswitchinterval(1e-6)
|
|
else:
|
|
interval = sys.getcheckinterval()
|
|
sys.setcheckinterval(1)
|
|
|
|
try:
|
|
for i in range(NTRIALS):
|
|
reset(collection)
|
|
lazy_client = get_client(connect=False)
|
|
lazy_collection = lazy_client.pymongo_test.test
|
|
run_threads(lazy_collection, target)
|
|
test(lazy_collection)
|
|
|
|
finally:
|
|
if not sys.platform.startswith('java'):
|
|
if hasattr(sys, 'setswitchinterval'):
|
|
sys.setswitchinterval(interval)
|
|
else:
|
|
sys.setcheckinterval(interval)
|
|
|
|
|
|
class _TestLazyConnectMixin(object):
|
|
"""Test concurrent operations on a lazily-connecting client.
|
|
|
|
Inherit from this class and from unittest.TestCase, and override
|
|
_get_client(self, **kwargs), for testing a lazily-connecting
|
|
client, i.e. a client initialized with connect=False.
|
|
"""
|
|
NTRIALS = 5
|
|
NTHREADS = 10
|
|
|
|
def test_insert(self):
|
|
def reset(collection):
|
|
collection.drop()
|
|
|
|
def insert(collection, _):
|
|
collection.insert({})
|
|
|
|
def test(collection):
|
|
self.assertEqual(NTHREADS, collection.count())
|
|
|
|
lazy_client_trial(reset, insert, test, self._get_client)
|
|
|
|
def test_save(self):
|
|
def reset(collection):
|
|
collection.drop()
|
|
|
|
def save(collection, _):
|
|
collection.save({})
|
|
|
|
def test(collection):
|
|
self.assertEqual(NTHREADS, collection.count())
|
|
|
|
lazy_client_trial(reset, save, test, self._get_client)
|
|
|
|
def test_update(self):
|
|
def reset(collection):
|
|
collection.drop()
|
|
collection.insert([{'i': 0}])
|
|
|
|
# Update doc 10 times.
|
|
def update(collection, i):
|
|
collection.update({}, {'$inc': {'i': 1}})
|
|
|
|
def test(collection):
|
|
self.assertEqual(NTHREADS, collection.find_one()['i'])
|
|
|
|
lazy_client_trial(reset, update, test, self._get_client)
|
|
|
|
def test_remove(self):
|
|
def reset(collection):
|
|
collection.drop()
|
|
collection.insert([{'i': i} for i in range(NTHREADS)])
|
|
|
|
def remove(collection, i):
|
|
collection.remove({'i': i})
|
|
|
|
def test(collection):
|
|
self.assertEqual(0, collection.count())
|
|
|
|
lazy_client_trial(reset, remove, test, self._get_client)
|
|
|
|
def test_find_one(self):
|
|
results = []
|
|
|
|
def reset(collection):
|
|
collection.drop()
|
|
collection.insert({})
|
|
results[:] = []
|
|
|
|
def find_one(collection, _):
|
|
results.append(collection.find_one())
|
|
|
|
def test(collection):
|
|
self.assertEqual(NTHREADS, len(results))
|
|
|
|
lazy_client_trial(reset, find_one, test, self._get_client)
|
|
|
|
def test_max_bson_size(self):
|
|
# Client should have sane defaults before connecting, and should update
|
|
# its configuration once connected.
|
|
c = self._get_client(connect=False)
|
|
self.assertEqual(16 * (1024 ** 2), c.max_bson_size)
|
|
self.assertEqual(2 * c.max_bson_size, c.max_message_size)
|
|
|
|
# Make the client connect, so that it sets its max_bson_size and
|
|
# max_message_size attributes.
|
|
ismaster = c.db.command('ismaster')
|
|
self.assertEqual(ismaster['maxBsonObjectSize'], c.max_bson_size)
|
|
if 'maxMessageSizeBytes' in ismaster:
|
|
self.assertEqual(
|
|
ismaster['maxMessageSizeBytes'],
|
|
c.max_message_size)
|