| # copyright 2016 twitter. 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. |
| '''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}) |