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75 lines
2.4 KiB
Python
75 lines
2.4 KiB
Python
# -*- coding: utf-8 -*-
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# Copyright 2014, 2015 OpenMarket Ltd
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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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"""This layer is responsible for replicating with remote home servers using
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a given transport.
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"""
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from .federation_client import FederationClient
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from .federation_server import FederationServer
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from .transaction_queue import TransactionQueue
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from .persistence import TransactionActions
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import logging
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logger = logging.getLogger(__name__)
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class ReplicationLayer(FederationClient, FederationServer):
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"""This layer is responsible for replicating with remote home servers over
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the given transport. I.e., does the sending and receiving of PDUs to
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remote home servers.
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The layer communicates with the rest of the server via a registered
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ReplicationHandler.
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In more detail, the layer:
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* Receives incoming data and processes it into transactions and pdus.
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* Fetches any PDUs it thinks it might have missed.
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* Keeps the current state for contexts up to date by applying the
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suitable conflict resolution.
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* Sends outgoing pdus wrapped in transactions.
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* Fills out the references to previous pdus/transactions appropriately
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for outgoing data.
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"""
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def __init__(self, hs, transport_layer):
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self.server_name = hs.hostname
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self.transport_layer = transport_layer
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self.transport_layer.register_received_handler(self)
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self.transport_layer.register_request_handler(self)
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self.federation_client = self
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self.store = hs.get_datastore()
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self.handler = None
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self.edu_handlers = {}
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self.query_handlers = {}
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self._clock = hs.get_clock()
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self.transaction_actions = TransactionActions(self.store)
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self._transaction_queue = TransactionQueue(hs, transport_layer)
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self._order = 0
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def __str__(self):
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return "<ReplicationLayer(%s)>" % self.server_name
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