| #!/usr/bin/env python |
| # -*- encoding: utf-8 -*- |
| |
| # Copyright 2016 - Twitter, Inc. |
| # |
| # 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. |
| '''join_streamlet_topology.py: module is an example of how to use the join operator''' |
| |
| import sys |
| |
| from heronpy.streamlet.builder import Builder |
| from heronpy.streamlet.runner import Runner |
| from heronpy.streamlet.config import Config |
| from heronpy.streamlet.windowconfig import WindowConfig |
| from heronpy.connectors.mock.arraylooper import ArrayLooper |
| |
| # pylint: disable=superfluous-parens |
| if __name__ == '__main__': |
| if len(sys.argv) != 2: |
| print("Topology's name is not specified") |
| sys.exit(1) |
| |
| builder = Builder() |
| |
| source_1 = builder.new_source(ArrayLooper([["key1", "a"], ["key1", "b"]], sleep=1)) |
| |
| source_2 = builder.new_source(ArrayLooper([["key1", "c"], ["key1", "d"]], sleep=1)) |
| |
| source_1.join(source_2, WindowConfig.create_sliding_window(2, 1), lambda x, y: x + y).log() |
| |
| runner = Runner() |
| config = Config() |
| runner.run(sys.argv[1], config, builder) |