| # 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. |
| '''stream aggregator''' |
| from collections import Counter |
| from heronpy.api.bolt.bolt import Bolt |
| |
| # pylint: disable=unused-argument |
| class StreamAggregateBolt(Bolt): |
| """Stream counts are aggregated""" |
| def initialize(self, config, context): |
| self.stream_counter = Counter() |
| |
| def process(self, tup): |
| self.stream_counter[tup.stream] += 1 |
| |
| def process_tick(self, tup): |
| self.log("Got tick tuple!") |
| self.log("Current stream counter: %s" % str(self.stream_counter)) |
