本文整理汇总了Python中synapse.util.ObservableDeferred.observers方法的典型用法代码示例。如果您正苦于以下问题：Python ObservableDeferred.observers方法的具体用法？Python ObservableDeferred.observers怎么用？Python ObservableDeferred.observers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synapse.util.ObservableDeferred的用法示例。
在下文中一共展示了ObservableDeferred.observers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: _NotifierUserStream
# 需要导入模块: from synapse.util import ObservableDeferred [as 别名]
# 或者: from synapse.util.ObservableDeferred import observers [as 别名]
class _NotifierUserStream(object):
"""This represents a user connected to the event stream.
It tracks the most recent stream token for that user.
At a given point a user may have a number of streams listening for
events.
This listener will also keep track of which rooms it is listening in
so that it can remove itself from the indexes in the Notifier class.
"""
def __init__(self, user_id, rooms, current_token, time_now_ms):
self.user_id = user_id
self.rooms = set(rooms)
self.current_token = current_token
self.last_notified_ms = time_now_ms
with PreserveLoggingContext():
self.notify_deferred = ObservableDeferred(defer.Deferred())
def notify(self, stream_key, stream_id, time_now_ms):
"""Notify any listeners for this user of a new event from an
event source.
Args:
stream_key(str): The stream the event came from.
stream_id(str): The new id for the stream the event came from.
time_now_ms(int): The current time in milliseconds.
"""
self.current_token = self.current_token.copy_and_advance(
stream_key, stream_id
)
self.last_notified_ms = time_now_ms
noify_deferred = self.notify_deferred
with PreserveLoggingContext():
self.notify_deferred = ObservableDeferred(defer.Deferred())
noify_deferred.callback(self.current_token)
def remove(self, notifier):
""" Remove this listener from all the indexes in the Notifier
it knows about.
"""
for room in self.rooms:
lst = notifier.room_to_user_streams.get(room, set())
lst.discard(self)
notifier.user_to_user_stream.pop(self.user_id)
def count_listeners(self):
return len(self.notify_deferred.observers())
def new_listener(self, token):
"""Returns a deferred that is resolved when there is a new token
greater than the given token.
"""
if self.current_token.is_after(token):
return _NotificationListener(defer.succeed(self.current_token))
else:
return _NotificationListener(self.notify_deferred.observe())示例2: _NotifierUserStream
# 需要导入模块: from synapse.util import ObservableDeferred [as 别名]
# 或者: from synapse.util.ObservableDeferred import observers [as 别名]
class _NotifierUserStream(object):
"""This represents a user connected to the event stream.
It tracks the most recent stream token for that user.
At a given point a user may have a number of streams listening for
events.
This listener will also keep track of which rooms it is listening in
so that it can remove itself from the indexes in the Notifier class.
"""
def __init__(self, user_id, rooms, current_token, time_now_ms):
self.user_id = user_id
self.rooms = set(rooms)
self.current_token = current_token
# The last token for which we should wake up any streams that have a
# token that comes before it. This gets updated everytime we get poked.
# We start it at the current token since if we get any streams
# that have a token from before we have no idea whether they should be
# woken up or not, so lets just wake them up.
self.last_notified_token = current_token
self.last_notified_ms = time_now_ms
with PreserveLoggingContext():
self.notify_deferred = ObservableDeferred(defer.Deferred())
def notify(self, stream_key, stream_id, time_now_ms):
"""Notify any listeners for this user of a new event from an
event source.
Args:
stream_key(str): The stream the event came from.
stream_id(str): The new id for the stream the event came from.
time_now_ms(int): The current time in milliseconds.
"""
self.current_token = self.current_token.copy_and_advance(
stream_key, stream_id
)
self.last_notified_token = self.current_token
self.last_notified_ms = time_now_ms
noify_deferred = self.notify_deferred
users_woken_by_stream_counter.inc(stream_key)
with PreserveLoggingContext():
self.notify_deferred = ObservableDeferred(defer.Deferred())
noify_deferred.callback(self.current_token)
def remove(self, notifier):
""" Remove this listener from all the indexes in the Notifier
it knows about.
"""
for room in self.rooms:
lst = notifier.room_to_user_streams.get(room, set())
lst.discard(self)
notifier.user_to_user_stream.pop(self.user_id)
def count_listeners(self):
return len(self.notify_deferred.observers())
def new_listener(self, token):
"""Returns a deferred that is resolved when there is a new token
greater than the given token.
Args:
token: The token from which we are streaming from, i.e. we shouldn't
notify for things that happened before this.
"""
# Immediately wake up stream if something has already since happened
# since their last token.
if self.last_notified_token.is_after(token):
return _NotificationListener(defer.succeed(self.current_token))
else:
return _NotificationListener(self.notify_deferred.observe())