| # 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. |
| |
| """ |
| The top-level library for Heron's Python Streamlet API, which enables you to |
| write Heron [topologies](https://apache.github.io/incubator-heron/docs/concepts/topologies/) |
| using the Python Streamlet API. |
| |
| Heron topologies are acyclic graphs used to process streaming data. Topologies |
| have two major components: |
| [spouts](spout/spout.m.html#heron_py.spout.spout.Spout) pull data into the |
| topology and then [emit](spout/spout.m.html#heron_py.spout.spout.Spout.emit) |
| that data as tuples (lists in Python) to |
| [bolts](bolt/bolt.m.html#heron_py.bolt.bolt.Bolt) that process that data. |
| """ |
| |
| # Load basic streamlet API modules |
| from heron.streamlet.src.python.streamlet import Streamlet, TimeWindow |
| from heron.streamlet.src.python.operation import OperationType |
