e95d2187b6
Change the driver to maintain a count of in-progress operations to each server (per client). When selecting a mongos server, the driver now picks 2 suitable servers at random and selects the server with fewer in-progress operations. Previously, the driver selected a mongos server at random. The new behavior is intended to route operations away from unhealthy or slow servers in highly concurrent single client workloads. PYTHON-2460 Only reset Pool.active_sockets to 0 after a fork()
952 lines
29 KiB
Python
952 lines
29 KiB
Python
# Copyright 2012-present MongoDB, Inc.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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"""Utilities for testing pymongo
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"""
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import collections
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import contextlib
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import functools
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import os
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import re
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import shutil
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import sys
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import threading
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import time
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import warnings
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from collections import defaultdict
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from functools import partial
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from bson import json_util, py3compat
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from bson.objectid import ObjectId
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from bson.son import SON
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from pymongo import (MongoClient,
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monitoring, read_preferences)
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from pymongo.errors import ConfigurationError, OperationFailure
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from pymongo.monitoring import _SENSITIVE_COMMANDS, ConnectionPoolListener
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from pymongo.pool import (_CancellationContext,
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PoolOptions)
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from pymongo.read_concern import ReadConcern
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from pymongo.read_preferences import ReadPreference
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from pymongo.server_selectors import (any_server_selector,
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writable_server_selector)
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from pymongo.server_type import SERVER_TYPE
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from pymongo.write_concern import WriteConcern
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from test import (client_context,
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db_user,
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db_pwd)
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if sys.version_info[0] < 3:
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# Python 2.7, use our backport.
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from test.barrier import Barrier
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else:
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from threading import Barrier
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IMPOSSIBLE_WRITE_CONCERN = WriteConcern(w=50)
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class CMAPListener(ConnectionPoolListener):
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def __init__(self):
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self.events = []
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def reset(self):
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self.events = []
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def add_event(self, event):
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self.events.append(event)
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def event_count(self, event_type):
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return len([event for event in self.events[:]
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if isinstance(event, event_type)])
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def connection_created(self, event):
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self.add_event(event)
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def connection_ready(self, event):
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self.add_event(event)
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def connection_closed(self, event):
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self.add_event(event)
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def connection_check_out_started(self, event):
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self.add_event(event)
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def connection_check_out_failed(self, event):
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self.add_event(event)
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def connection_checked_out(self, event):
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self.add_event(event)
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def connection_checked_in(self, event):
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self.add_event(event)
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def pool_created(self, event):
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self.add_event(event)
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def pool_cleared(self, event):
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self.add_event(event)
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def pool_closed(self, event):
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self.add_event(event)
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class EventListener(monitoring.CommandListener):
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def __init__(self):
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self.results = defaultdict(list)
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def started(self, event):
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self.results['started'].append(event)
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def succeeded(self, event):
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self.results['succeeded'].append(event)
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def failed(self, event):
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self.results['failed'].append(event)
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def started_command_names(self):
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"""Return list of command names started."""
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return [event.command_name for event in self.results['started']]
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def reset(self):
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"""Reset the state of this listener."""
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self.results.clear()
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class WhiteListEventListener(EventListener):
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def __init__(self, *commands):
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self.commands = set(commands)
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super(WhiteListEventListener, self).__init__()
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def started(self, event):
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if event.command_name in self.commands:
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super(WhiteListEventListener, self).started(event)
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def succeeded(self, event):
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if event.command_name in self.commands:
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super(WhiteListEventListener, self).succeeded(event)
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def failed(self, event):
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if event.command_name in self.commands:
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super(WhiteListEventListener, self).failed(event)
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class OvertCommandListener(EventListener):
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"""A CommandListener that ignores sensitive commands."""
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def started(self, event):
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if event.command_name.lower() not in _SENSITIVE_COMMANDS:
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super(OvertCommandListener, self).started(event)
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def succeeded(self, event):
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if event.command_name.lower() not in _SENSITIVE_COMMANDS:
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super(OvertCommandListener, self).succeeded(event)
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def failed(self, event):
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if event.command_name.lower() not in _SENSITIVE_COMMANDS:
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super(OvertCommandListener, self).failed(event)
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class _ServerEventListener(object):
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"""Listens to all events."""
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def __init__(self):
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self.results = []
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def opened(self, event):
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self.results.append(event)
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def description_changed(self, event):
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self.results.append(event)
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def closed(self, event):
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self.results.append(event)
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def matching(self, matcher):
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"""Return the matching events."""
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results = self.results[:]
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return [event for event in results if matcher(event)]
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def reset(self):
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self.results = []
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class ServerEventListener(_ServerEventListener,
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monitoring.ServerListener):
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"""Listens to Server events."""
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class ServerAndTopologyEventListener(ServerEventListener,
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monitoring.TopologyListener):
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"""Listens to Server and Topology events."""
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class HeartbeatEventListener(monitoring.ServerHeartbeatListener):
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"""Listens to only server heartbeat events."""
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def __init__(self):
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self.results = []
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def started(self, event):
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self.results.append(event)
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def succeeded(self, event):
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self.results.append(event)
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def failed(self, event):
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self.results.append(event)
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def matching(self, matcher):
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"""Return the matching events."""
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results = self.results[:]
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return [event for event in results if matcher(event)]
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class MockSocketInfo(object):
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def __init__(self):
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self.cancel_context = _CancellationContext()
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self.more_to_come = False
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def close_socket(self, reason):
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pass
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def __enter__(self):
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return self
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def __exit__(self, exc_type, exc_val, exc_tb):
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pass
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class MockPool(object):
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def __init__(self, address, options, handshake=True):
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self.generation = 0
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self._lock = threading.Lock()
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self.opts = options
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self.operation_count = 0
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def get_socket(self, all_credentials, checkout=False):
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return MockSocketInfo()
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def return_socket(self, *args, **kwargs):
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pass
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def _reset(self):
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with self._lock:
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self.generation += 1
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def reset(self):
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self._reset()
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def close(self):
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self._reset()
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def update_is_writable(self, is_writable):
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pass
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def remove_stale_sockets(self, *args, **kwargs):
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pass
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class ScenarioDict(dict):
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"""Dict that returns {} for any unknown key, recursively."""
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def __init__(self, data):
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def convert(v):
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if isinstance(v, collections.Mapping):
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return ScenarioDict(v)
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if isinstance(v, (py3compat.string_type, bytes)):
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return v
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if isinstance(v, collections.Sequence):
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return [convert(item) for item in v]
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return v
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dict.__init__(self, [(k, convert(v)) for k, v in data.items()])
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def __getitem__(self, item):
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try:
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return dict.__getitem__(self, item)
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except KeyError:
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# Unlike a defaultdict, don't set the key, just return a dict.
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return ScenarioDict({})
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class CompareType(object):
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"""Class that compares equal to any object of the given type."""
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def __init__(self, type):
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self.type = type
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def __eq__(self, other):
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return isinstance(other, self.type)
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def __ne__(self, other):
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"""Needed for Python 2."""
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return not self.__eq__(other)
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class FunctionCallRecorder(object):
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"""Utility class to wrap a callable and record its invocations."""
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def __init__(self, function):
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self._function = function
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self._call_list = []
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def __call__(self, *args, **kwargs):
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self._call_list.append((args, kwargs))
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return self._function(*args, **kwargs)
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def reset(self):
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"""Wipes the call list."""
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self._call_list = []
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def call_list(self):
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"""Returns a copy of the call list."""
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return self._call_list[:]
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@property
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def call_count(self):
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"""Returns the number of times the function has been called."""
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return len(self._call_list)
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class TestCreator(object):
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"""Class to create test cases from specifications."""
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def __init__(self, create_test, test_class, test_path):
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"""Create a TestCreator object.
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:Parameters:
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- `create_test`: callback that returns a test case. The callback
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must accept the following arguments - a dictionary containing the
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entire test specification (the `scenario_def`), a dictionary
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containing the specification for which the test case will be
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generated (the `test_def`).
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- `test_class`: the unittest.TestCase class in which to create the
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test case.
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- `test_path`: path to the directory containing the JSON files with
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the test specifications.
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"""
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self._create_test = create_test
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self._test_class = test_class
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self.test_path = test_path
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def _ensure_min_max_server_version(self, scenario_def, method):
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"""Test modifier that enforces a version range for the server on a
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test case."""
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if 'minServerVersion' in scenario_def:
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min_ver = tuple(
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int(elt) for
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elt in scenario_def['minServerVersion'].split('.'))
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if min_ver is not None:
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method = client_context.require_version_min(*min_ver)(method)
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if 'maxServerVersion' in scenario_def:
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max_ver = tuple(
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int(elt) for
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elt in scenario_def['maxServerVersion'].split('.'))
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if max_ver is not None:
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method = client_context.require_version_max(*max_ver)(method)
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return method
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@staticmethod
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def valid_topology(run_on_req):
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return client_context.is_topology_type(
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run_on_req.get('topology', ['single', 'replicaset', 'sharded']))
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@staticmethod
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def min_server_version(run_on_req):
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version = run_on_req.get('minServerVersion')
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if version:
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min_ver = tuple(int(elt) for elt in version.split('.'))
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return client_context.version >= min_ver
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return True
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@staticmethod
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def max_server_version(run_on_req):
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version = run_on_req.get('maxServerVersion')
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if version:
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max_ver = tuple(int(elt) for elt in version.split('.'))
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return client_context.version <= max_ver
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return True
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def should_run_on(self, scenario_def):
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run_on = scenario_def.get('runOn', [])
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if not run_on:
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# Always run these tests.
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return True
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for req in run_on:
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if (self.valid_topology(req) and
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self.min_server_version(req) and
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self.max_server_version(req)):
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return True
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return False
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def ensure_run_on(self, scenario_def, method):
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"""Test modifier that enforces a 'runOn' on a test case."""
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return client_context._require(
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lambda: self.should_run_on(scenario_def),
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"runOn not satisfied",
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method)
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def tests(self, scenario_def):
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"""Allow CMAP spec test to override the location of test."""
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return scenario_def['tests']
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def create_tests(self):
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for dirpath, _, filenames in os.walk(self.test_path):
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dirname = os.path.split(dirpath)[-1]
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for filename in filenames:
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with open(os.path.join(dirpath, filename)) as scenario_stream:
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# Use tz_aware=False to match how CodecOptions decodes
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# dates.
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opts = json_util.JSONOptions(tz_aware=False)
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scenario_def = ScenarioDict(
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json_util.loads(scenario_stream.read(),
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json_options=opts))
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test_type = os.path.splitext(filename)[0]
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# Construct test from scenario.
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for test_def in self.tests(scenario_def):
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test_name = 'test_%s_%s_%s' % (
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dirname,
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test_type.replace("-", "_").replace('.', '_'),
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str(test_def['description'].replace(" ", "_").replace(
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'.', '_')))
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new_test = self._create_test(
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scenario_def, test_def, test_name)
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new_test = self._ensure_min_max_server_version(
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scenario_def, new_test)
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new_test = self.ensure_run_on(
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scenario_def, new_test)
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new_test.__name__ = test_name
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setattr(self._test_class, new_test.__name__, new_test)
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def _connection_string(h, authenticate):
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if h.startswith("mongodb://"):
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return h
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elif client_context.auth_enabled and authenticate:
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return "mongodb://%s:%s@%s" % (db_user, db_pwd, str(h))
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else:
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return "mongodb://%s" % (str(h),)
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def _mongo_client(host, port, authenticate=True, directConnection=False,
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**kwargs):
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"""Create a new client over SSL/TLS if necessary."""
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host = host or client_context.host
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port = port or client_context.port
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client_options = client_context.default_client_options.copy()
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if client_context.replica_set_name and not directConnection:
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client_options['replicaSet'] = client_context.replica_set_name
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client_options.update(kwargs)
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client = MongoClient(_connection_string(host, authenticate), port,
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**client_options)
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return client
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def single_client_noauth(h=None, p=None, **kwargs):
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"""Make a direct connection. Don't authenticate."""
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return _mongo_client(h, p, authenticate=False,
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directConnection=True, **kwargs)
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def single_client(h=None, p=None, **kwargs):
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"""Make a direct connection, and authenticate if necessary."""
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return _mongo_client(h, p, directConnection=True, **kwargs)
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def rs_client_noauth(h=None, p=None, **kwargs):
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"""Connect to the replica set. Don't authenticate."""
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return _mongo_client(h, p, authenticate=False, **kwargs)
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def rs_client(h=None, p=None, **kwargs):
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"""Connect to the replica set and authenticate if necessary."""
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return _mongo_client(h, p, **kwargs)
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def rs_or_single_client_noauth(h=None, p=None, **kwargs):
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"""Connect to the replica set if there is one, otherwise the standalone.
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Like rs_or_single_client, but does not authenticate.
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"""
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return _mongo_client(h, p, authenticate=False, **kwargs)
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def rs_or_single_client(h=None, p=None, **kwargs):
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"""Connect to the replica set if there is one, otherwise the standalone.
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Authenticates if necessary.
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"""
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return _mongo_client(h, p, **kwargs)
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def ensure_all_connected(client):
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"""Ensure that the client's connection pool has socket connections to all
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members of a replica set. Raises ConfigurationError when called with a
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non-replica set client.
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Depending on the use-case, the caller may need to clear any event listeners
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that are configured on the client.
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"""
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ismaster = client.admin.command("isMaster")
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if 'setName' not in ismaster:
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raise ConfigurationError("cluster is not a replica set")
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target_host_list = set(ismaster['hosts'])
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connected_host_list = set([ismaster['me']])
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admindb = client.get_database('admin')
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# Run isMaster until we have connected to each host at least once.
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while connected_host_list != target_host_list:
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ismaster = admindb.command("isMaster",
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read_preference=ReadPreference.SECONDARY)
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connected_host_list.update([ismaster["me"]])
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def one(s):
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"""Get one element of a set"""
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return next(iter(s))
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def oid_generated_on_process(oid):
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"""Makes a determination as to whether the given ObjectId was generated
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by the current process, based on the 5-byte random number in the ObjectId.
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"""
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return ObjectId._random() == oid.binary[4:9]
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def delay(sec):
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return '''function() { sleep(%f * 1000); return true; }''' % sec
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def get_command_line(client):
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command_line = client.admin.command('getCmdLineOpts')
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assert command_line['ok'] == 1, "getCmdLineOpts() failed"
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return command_line
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def camel_to_snake(camel):
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# Regex to convert CamelCase to snake_case.
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snake = re.sub('(.)([A-Z][a-z]+)', r'\1_\2', camel)
|
|
return re.sub('([a-z0-9])([A-Z])', r'\1_\2', snake).lower()
|
|
|
|
|
|
def camel_to_upper_camel(camel):
|
|
return camel[0].upper() + camel[1:]
|
|
|
|
|
|
def camel_to_snake_args(arguments):
|
|
for arg_name in list(arguments):
|
|
c2s = camel_to_snake(arg_name)
|
|
arguments[c2s] = arguments.pop(arg_name)
|
|
return arguments
|
|
|
|
|
|
def parse_collection_options(opts):
|
|
if 'readPreference' in opts:
|
|
opts['read_preference'] = parse_read_preference(
|
|
opts.pop('readPreference'))
|
|
|
|
if 'writeConcern' in opts:
|
|
opts['write_concern'] = WriteConcern(
|
|
**dict(opts.pop('writeConcern')))
|
|
|
|
if 'readConcern' in opts:
|
|
opts['read_concern'] = ReadConcern(
|
|
**dict(opts.pop('readConcern')))
|
|
return opts
|
|
|
|
|
|
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):
|
|
# Drop all non-system collections in this database.
|
|
for coll in db.list_collection_names(
|
|
filter={"name": {"$regex": r"^(?!system\.)"}}):
|
|
db.drop_collection(coll)
|
|
|
|
|
|
def remove_all_users(db):
|
|
db.command("dropAllUsersFromDatabase", 1,
|
|
writeConcern={"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.is_alive(), "Thread %s hung" % t
|
|
|
|
|
|
def connected(client):
|
|
"""Convenience to wait for a newly-constructed client to connect."""
|
|
with warnings.catch_warnings():
|
|
# Ignore warning that "ismaster" is always routed to primary even
|
|
# if client's read preference isn't PRIMARY.
|
|
warnings.simplefilter("ignore", UserWarning)
|
|
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").
|
|
|
|
Returns the predicate's first true value.
|
|
"""
|
|
start = time.time()
|
|
interval = min(float(timeout)/100, 0.1)
|
|
while True:
|
|
retval = predicate()
|
|
if retval:
|
|
return retval
|
|
|
|
if time.time() - start > timeout:
|
|
raise AssertionError("Didn't ever %s" % success_description)
|
|
|
|
time.sleep(interval)
|
|
|
|
|
|
def repl_set_step_down(client, **kwargs):
|
|
"""Run replSetStepDown, first unfreezing a secondary with replSetFreeze."""
|
|
cmd = SON([('replSetStepDown', 1)])
|
|
cmd.update(kwargs)
|
|
|
|
# Unfreeze a secondary to ensure a speedy election.
|
|
client.admin.command(
|
|
'replSetFreeze', 0, read_preference=ReadPreference.SECONDARY)
|
|
client.admin.command(cmd)
|
|
|
|
def is_mongos(client):
|
|
res = client.admin.command('ismaster')
|
|
return res.get('msg', '') == 'isdbgrid'
|
|
|
|
|
|
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)
|
|
|
|
|
|
@contextlib.contextmanager
|
|
def _ignore_deprecations():
|
|
with warnings.catch_warnings():
|
|
warnings.simplefilter("ignore", DeprecationWarning)
|
|
yield
|
|
|
|
|
|
def ignore_deprecations(wrapped=None):
|
|
"""A context manager or a decorator."""
|
|
if wrapped:
|
|
@functools.wraps(wrapped)
|
|
def wrapper(*args, **kwargs):
|
|
with _ignore_deprecations():
|
|
return wrapped(*args, **kwargs)
|
|
|
|
return wrapper
|
|
|
|
else:
|
|
return _ignore_deprecations()
|
|
|
|
|
|
class DeprecationFilter(object):
|
|
|
|
def __init__(self, action="ignore"):
|
|
"""Start filtering deprecations."""
|
|
self.warn_context = warnings.catch_warnings()
|
|
self.warn_context.__enter__()
|
|
warnings.simplefilter(action, DeprecationWarning)
|
|
|
|
def stop(self):
|
|
"""Stop filtering deprecations."""
|
|
self.warn_context.__exit__()
|
|
self.warn_context = None
|
|
|
|
|
|
def get_pool(client):
|
|
"""Get the standalone, primary, or mongos pool."""
|
|
topology = client._get_topology()
|
|
server = topology.select_server(writable_server_selector)
|
|
return server.pool
|
|
|
|
|
|
def get_pools(client):
|
|
"""Get all pools."""
|
|
return [
|
|
server.pool for server in
|
|
client._get_topology().select_servers(any_server_selector)]
|
|
|
|
|
|
# Constants for run_threads and lazy_client_trial.
|
|
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 = partial(target, collection, i)
|
|
threads.append(threading.Thread(target=bound_target))
|
|
|
|
for t in threads:
|
|
t.start()
|
|
|
|
for t in threads:
|
|
t.join(60)
|
|
assert not t.is_alive()
|
|
|
|
|
|
@contextlib.contextmanager
|
|
def frequent_thread_switches():
|
|
"""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:
|
|
yield
|
|
finally:
|
|
if not sys.platform.startswith('java'):
|
|
if hasattr(sys, 'setswitchinterval'):
|
|
sys.setswitchinterval(interval)
|
|
else:
|
|
sys.setcheckinterval(interval)
|
|
|
|
|
|
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
|
|
|
|
with frequent_thread_switches():
|
|
for i in range(NTRIALS):
|
|
reset(collection)
|
|
lazy_client = get_client()
|
|
lazy_collection = lazy_client.pymongo_test.test
|
|
run_threads(lazy_collection, target)
|
|
test(lazy_collection)
|
|
|
|
|
|
def gevent_monkey_patched():
|
|
"""Check if gevent's monkey patching is active."""
|
|
# In Python 3.6 importing gevent.socket raises an ImportWarning.
|
|
with warnings.catch_warnings():
|
|
warnings.simplefilter("ignore", ImportWarning)
|
|
try:
|
|
import socket
|
|
import gevent.socket
|
|
return socket.socket is gevent.socket.socket
|
|
except ImportError:
|
|
return False
|
|
|
|
|
|
def eventlet_monkey_patched():
|
|
"""Check if eventlet's monkey patching is active."""
|
|
try:
|
|
import threading
|
|
import eventlet
|
|
return (threading.current_thread.__module__ ==
|
|
'eventlet.green.threading')
|
|
except ImportError:
|
|
return False
|
|
|
|
|
|
def is_greenthread_patched():
|
|
return gevent_monkey_patched() or eventlet_monkey_patched()
|
|
|
|
|
|
def cdecimal_patched():
|
|
"""Check if Python 2.7 cdecimal patching is active."""
|
|
try:
|
|
import decimal
|
|
import cdecimal
|
|
return decimal is cdecimal
|
|
except ImportError:
|
|
return False
|
|
|
|
|
|
def disable_replication(client):
|
|
"""Disable replication on all secondaries, requires MongoDB 3.2."""
|
|
for host, port in client.secondaries:
|
|
secondary = single_client(host, port)
|
|
secondary.admin.command('configureFailPoint', 'stopReplProducer',
|
|
mode='alwaysOn')
|
|
|
|
|
|
def enable_replication(client):
|
|
"""Enable replication on all secondaries, requires MongoDB 3.2."""
|
|
for host, port in client.secondaries:
|
|
secondary = single_client(host, port)
|
|
secondary.admin.command('configureFailPoint', 'stopReplProducer',
|
|
mode='off')
|
|
|
|
|
|
class ExceptionCatchingThread(threading.Thread):
|
|
"""A thread that stores any exception encountered from run()."""
|
|
def __init__(self, *args, **kwargs):
|
|
self.exc = None
|
|
super(ExceptionCatchingThread, self).__init__(*args, **kwargs)
|
|
|
|
def run(self):
|
|
try:
|
|
super(ExceptionCatchingThread, self).run()
|
|
except BaseException as exc:
|
|
self.exc = exc
|
|
raise
|
|
|
|
|
|
def parse_read_preference(pref):
|
|
# Make first letter lowercase to match read_pref's modes.
|
|
mode_string = pref.get('mode', 'primary')
|
|
mode_string = mode_string[:1].lower() + mode_string[1:]
|
|
mode = read_preferences.read_pref_mode_from_name(mode_string)
|
|
max_staleness = pref.get('maxStalenessSeconds', -1)
|
|
tag_sets = pref.get('tag_sets')
|
|
return read_preferences.make_read_preference(
|
|
mode, tag_sets=tag_sets, max_staleness=max_staleness)
|
|
|
|
|
|
def server_name_to_type(name):
|
|
"""Convert a ServerType name to the corresponding value. For SDAM tests."""
|
|
# Special case, some tests in the spec include the PossiblePrimary
|
|
# type, but only single-threaded drivers need that type. We call
|
|
# possible primaries Unknown.
|
|
if name == 'PossiblePrimary':
|
|
return SERVER_TYPE.Unknown
|
|
return getattr(SERVER_TYPE, name)
|
|
|
|
|
|
def cat_files(dest, *sources):
|
|
"""Cat multiple files into dest."""
|
|
with open(dest, 'wb') as fdst:
|
|
for src in sources:
|
|
with open(src, 'rb') as fsrc:
|
|
shutil.copyfileobj(fsrc, fdst)
|
|
|
|
|
|
@contextlib.contextmanager
|
|
def assertion_context(msg):
|
|
"""A context manager that adds info to an assertion failure."""
|
|
try:
|
|
yield
|
|
except AssertionError as exc:
|
|
msg = '%s (%s)' % (exc, msg)
|
|
py3compat.reraise(type(exc), msg, sys.exc_info()[2])
|