| /* |
| * 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. |
| */ |
| |
| package org.apache.gearpump.streaming.examples.wordcount.dsl |
| |
| import org.apache.gearpump.cluster.client.ClientContext |
| import org.apache.gearpump.cluster.main.{ArgumentsParser, CLIOption} |
| import org.apache.gearpump.streaming.dsl.scalaapi.StreamApp |
| import org.apache.gearpump.streaming.dsl.scalaapi.StreamApp._ |
| import org.apache.gearpump.util.AkkaApp |
| |
| /** Same WordCount with High level DSL syntax */ |
| object WordCount extends AkkaApp with ArgumentsParser { |
| |
| override val options: Array[(String, CLIOption[Any])] = Array.empty |
| |
| override def main(akkaConf: Config, args: Array[String]): Unit = { |
| val context = ClientContext(akkaConf) |
| val app = StreamApp("dsl", context) |
| val data = "This is a good start, bingo!! bingo!!" |
| app.source(data.lines.toList, 1, "source"). |
| // word => (word, count) |
| flatMap(line => line.split("[\\s]+")).map((_, 1)). |
| // (word, count1), (word, count2) => (word, count1 + count2) |
| groupByKey().sum.log |
| |
| context.submit(app).waitUntilFinish() |
| context.close() |
| } |
| } |