| /* |
| * 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 |
| |
| import akka.actor.ActorSystem |
| import org.apache.gearpump.cluster.UserConfig |
| import org.apache.gearpump.cluster.client.ClientContext |
| import org.apache.gearpump.cluster.embedded.EmbeddedCluster |
| import org.apache.gearpump.cluster.main.{ArgumentsParser, CLIOption, ParseResult} |
| import org.apache.gearpump.streaming.partitioner.HashPartitioner |
| import org.apache.gearpump.streaming.source.DataSourceProcessor |
| import org.apache.gearpump.streaming.{Processor, StreamApplication} |
| import org.apache.gearpump.util.Graph.Node |
| import org.apache.gearpump.util.{AkkaApp, Graph, LogUtil} |
| import org.slf4j.Logger |
| |
| /** Same WordCount with low level Processor Graph syntax */ |
| object WordCount extends AkkaApp with ArgumentsParser { |
| private val LOG: Logger = LogUtil.getLogger(getClass) |
| val RUN_FOR_EVER = -1 |
| |
| override val options: Array[(String, CLIOption[Any])] = Array( |
| "split" -> CLIOption[Int]("<how many source tasks>", required = false, |
| defaultValue = Some(1)), |
| "sum" -> CLIOption[Int]("<how many sum tasks>", required = false, defaultValue = Some(1)), |
| "debug" -> CLIOption[Boolean]("<true|false>", required = false, defaultValue = Some(false)), |
| "sleep" -> CLIOption[Int]("how many seconds to sleep for debug mode", required = false, |
| defaultValue = Some(30)) |
| ) |
| |
| def application(config: ParseResult, system: ActorSystem): StreamApplication = { |
| implicit val actorSystem = system |
| |
| val sumNum = config.getInt("sum") |
| val splitNum = config.getInt("split") |
| val split = new Split |
| val sourceProcessor = DataSourceProcessor(split, splitNum, "Split") |
| val sum = Processor[Sum](sumNum) |
| val partitioner = new HashPartitioner |
| val computation = sourceProcessor ~ partitioner ~> sum |
| val app = StreamApplication("wordCount", Graph(computation), UserConfig.empty) |
| app |
| } |
| |
| override def main(akkaConf: Config, args: Array[String]): Unit = { |
| val config = parse(args) |
| |
| val debugMode = config.getBoolean("debug") |
| val sleepSeconds = config.getInt("sleep") |
| |
| val localCluster = if (debugMode) { |
| val cluster = new EmbeddedCluster(akkaConf: Config) |
| cluster.start() |
| Some(cluster) |
| } else { |
| None |
| } |
| |
| val context: ClientContext = localCluster match { |
| case Some(local) => local.newClientContext |
| case None => ClientContext(akkaConf) |
| } |
| |
| val app = application(config, context.system) |
| context.submit(app) |
| |
| if (debugMode) { |
| Thread.sleep(sleepSeconds * 1000) // Sleeps for 30 seconds for debugging. |
| } |
| |
| context.close() |
| localCluster.map(_.stop()) |
| } |
| } |
| |