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# -*- coding: utf-8 -*-
# Copyright 2014 OpenMarket Ltd
#
# 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.
from twisted.internet import defer
class EventSnapshot(object):
def __init__(self, prev_events, depth, current_state,
current_state_group):
self._prev_events = prev_events
self._depth = depth
self._current_state = current_state
self._current_state_group = current_state_group
class EventCache(object):
def __init__(self, store):
self._store = store
self._cache = {}
@defer.inlineCallbacks
def load_event(self, event_id):
event = self._cache.get(event_id, None)
if not event:
event = yield self._store.get_event(
event_id,
allow_none=True
)
if event:
self._cache[event_id] = event
defer.returnValue(event)
def load_event_from_cache(self, event_id):
return self._cache.get(event_id, None)
def add_to_cache(self, *events):
self._cache.update({
event.event_id: event
for event in events
})
class EventContext(object):
def __init__(self, current_state, auth_events):
self.current_state = current_state
self.auth_events = auth_events
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