本文整理汇总了Python中pymongo.read_preferences.MovingAverage.reset方法的典型用法代码示例。如果您正苦于以下问题：Python MovingAverage.reset方法的具体用法？Python MovingAverage.reset怎么用？Python MovingAverage.reset使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类pymongo.read_preferences.MovingAverage的用法示例。
在下文中一共展示了MovingAverage.reset方法的2个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Python代码示例。
示例1: Monitor
# 需要导入模块: from pymongo.read_preferences import MovingAverage [as 别名]
# 或者: from pymongo.read_preferences.MovingAverage import reset [as 别名]
class Monitor(object):
def __init__(
self,
server_description,
topology,
pool,
topology_settings):
"""Class to monitor a MongoDB server on a background thread.
Pass an initial ServerDescription, a Topology, a Pool, and
TopologySettings.
The Topology is weakly referenced. The Pool must be exclusive to this
Monitor.
"""
self._server_description = server_description
self._pool = pool
self._settings = topology_settings
self._avg_round_trip_time = MovingAverage()
# We strongly reference the executor and it weakly references us via
# this closure. When the monitor is freed, stop the executor soon.
def target():
monitor = self_ref()
if monitor is None:
return False # Stop the executor.
Monitor._run(monitor)
return True
executor = periodic_executor.PeriodicExecutor(
interval=common.HEARTBEAT_FREQUENCY,
min_interval=common.MIN_HEARTBEAT_INTERVAL,
target=target,
name="pymongo_server_monitor_thread")
self._executor = executor
# Avoid cycles. When self or topology is freed, stop executor soon.
self_ref = weakref.ref(self, executor.close)
self._topology = weakref.proxy(topology, executor.close)
def open(self):
"""Start monitoring, or restart after a fork.
Multiple calls have no effect.
"""
self._executor.open()
def close(self):
"""Close and stop monitoring.
open() restarts the monitor after closing.
"""
self._executor.close()
# Increment the pool_id and maybe close the socket. If the executor
# thread has the socket checked out, it will be closed when checked in.
self._pool.reset()
def join(self, timeout=None):
self._executor.join(timeout)
def request_check(self):
"""If the monitor is sleeping, wake and check the server soon."""
self._executor.wake()
def _run(self):
try:
self._server_description = self._check_with_retry()
self._topology.on_change(self._server_description)
except ReferenceError:
# Topology was garbage-collected.
self.close()
def _check_with_retry(self):
"""Call ismaster once or twice. Reset server's pool on error.
Returns a ServerDescription.
"""
# According to the spec, if an ismaster call fails we reset the
# server's pool. If a server was once connected, change its type
# to Unknown only after retrying once.
address = self._server_description.address
retry = self._server_description.server_type != SERVER_TYPE.Unknown
try:
return self._check_once()
except ReferenceError:
raise
except Exception as error:
self._topology.reset_pool(address)
default = ServerDescription(address, error=error)
if not retry:
self._avg_round_trip_time.reset()
# Server type defaults to Unknown.
return default
# Try a second and final time. If it fails return original error.
try:
return self._check_once()
#.........这里部分代码省略.........
示例2: Monitor
# 需要导入模块: from pymongo.read_preferences import MovingAverage [as 别名]
# 或者: from pymongo.read_preferences.MovingAverage import reset [as 别名]
class Monitor(object):
def __init__(
self,
server_description,
topology,
pool,
topology_settings):
"""Class to monitor a MongoDB server on a background thread.
Pass an initial ServerDescription, a Topology, a Pool, and
TopologySettings.
The Topology is weakly referenced. The Pool must be exclusive to this
Monitor.
"""
self._server_description = server_description
self._pool = pool
self._settings = topology_settings
self._avg_round_trip_time = MovingAverage()
self._listeners = self._settings._pool_options.event_listeners
pub = self._listeners is not None
self._publish = pub and self._listeners.enabled_for_server_heartbeat
# We strongly reference the executor and it weakly references us via
# this closure. When the monitor is freed, stop the executor soon.
def target():
monitor = self_ref()
if monitor is None:
return False # Stop the executor.
Monitor._run(monitor)
return True
executor = periodic_executor.PeriodicExecutor(
interval=self._settings.heartbeat_frequency,
min_interval=common.MIN_HEARTBEAT_INTERVAL,
target=target,
name="pymongo_server_monitor_thread")
self._executor = executor
# Avoid cycles. When self or topology is freed, stop executor soon.
self_ref = weakref.ref(self, executor.close)
self._topology = weakref.proxy(topology, executor.close)
def open(self):
"""Start monitoring, or restart after a fork.
Multiple calls have no effect.
"""
self._executor.open()
def close(self):
"""Close and stop monitoring.
open() restarts the monitor after closing.
"""
self._executor.close()
# Increment the pool_id and maybe close the socket. If the executor
# thread has the socket checked out, it will be closed when checked in.
self._pool.reset()
def join(self, timeout=None):
self._executor.join(timeout)
def request_check(self):
"""If the monitor is sleeping, wake and check the server soon."""
self._executor.wake()
def _run(self):
try:
self._server_description = self._check_with_retry()
self._topology.on_change(self._server_description)
except ReferenceError:
# Topology was garbage-collected.
self.close()
def _check_with_retry(self):
"""Call ismaster once or twice. Reset server's pool on error.
Returns a ServerDescription.
"""
# According to the spec, if an ismaster call fails we reset the
# server's pool. If a server was once connected, change its type
# to Unknown only after retrying once.
address = self._server_description.address
retry = True
metadata = None
if self._server_description.server_type == SERVER_TYPE.Unknown:
retry = False
metadata = self._pool.opts.metadata
start = _time()
try:
# If the server type is unknown, send metadata with first check.
return self._check_once(metadata=metadata)
except ReferenceError:
raise
except Exception as error:
error_time = _time() - start
#.........这里部分代码省略.........