# Tencent is pleased to support the open source community by making GNES available.
#
# Copyright (C) 2019 THL A29 Limited, a Tencent company. All rights reserved.
# 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 collections import defaultdict
from typing import Dict, List
from .base import BaseService as BS, MessageHandler, BlockMessage
from ..proto import gnes_pb2
from ..router.base import BaseReduceRouter
[docs]class RouterService(BS):
handler = MessageHandler(BS.handler)
[docs] def post_init(self):
from ..router.base import BaseRouter
self._model = self.load_model(BaseRouter)
self._pending = defaultdict(list) # type: Dict[str, List]
def _is_msg_complete(self, msg: 'gnes_pb2.Message', num_req: int) -> bool:
return (self.args.num_part is None and num_req == msg.envelope.num_part[-1]) or \
(num_req == self.args.num_part)
@handler.register(NotImplementedError)
def _handler_default(self, msg: 'gnes_pb2.Message'):
if isinstance(self._model, BaseReduceRouter):
req_id = msg.envelope.request_id
self._pending[req_id].append(msg)
num_req = len(self._pending[req_id])
if self._is_msg_complete(msg, num_req):
prev_msgs = self._pending.pop(req_id)
return self._model.apply(msg, prev_msgs)
else:
raise BlockMessage
else:
return self._model.apply(msg)