| #!/usr/bin/env python3 |
| # -*- encoding: utf-8 -*- |
| |
| # Licensed to the Apache Software Foundation (ASF) under one |
| # or more contributor license agreements. See the NOTICE file |
| # distributed with this work for additional information |
| # regarding copyright ownership. The ASF licenses this file |
| # to you 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. |
| |
| '''module for example topology: CustomGroupingTopology''' |
| |
| import heronpy.api.api_constants as constants |
| from heronpy.api.topology import Topology |
| from heronpy.api.stream import Grouping |
| |
| from examples.src.python.spout import MultiStreamSpout |
| from examples.src.python.bolt import CountBolt, StreamAggregateBolt |
| |
| class MultiStream(Topology): |
| spout = MultiStreamSpout.spec(par=2) |
| count_bolt = CountBolt.spec(par=2, |
| inputs={spout: Grouping.fields('word')}, |
| config={constants.TOPOLOGY_TICK_TUPLE_FREQ_SECS: 10}) |
| stream_aggregator = StreamAggregateBolt.spec(par=1, |
| inputs={spout: Grouping.ALL, |
| spout['error']: Grouping.ALL}, |
| config={constants.TOPOLOGY_TICK_TUPLE_FREQ_SECS: 15}) |