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From mjsax <...@git.apache.org>
Subject [GitHub] flink pull request: Flink Storm compatibility
Date Tue, 12 May 2015 09:12:43 GMT
Github user mjsax commented on a diff in the pull request:

    https://github.com/apache/flink/pull/573#discussion_r30116720
  
    --- Diff: flink-staging/flink-streaming/flink-storm-examples/src/main/java/org/apache/flink/stormcompatibility/wordcount/StormWordCountLocal.java
---
    @@ -0,0 +1,80 @@
    +/*
    + * 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.flink.stormcompatibility.wordcount;
    +
    +import org.apache.flink.examples.java.wordcount.util.WordCountData;
    +import org.apache.flink.stormcompatibility.api.FlinkLocalCluster;
    +import org.apache.flink.stormcompatibility.api.FlinkTopologyBuilder;
    +
    +import backtype.storm.LocalCluster;
    +import backtype.storm.generated.StormTopology;
    +import backtype.storm.utils.Utils;
    +
    +
    +
    +
    +
    +/**
    + * Implements the "WordCount" program that computes a simple word occurrence histogram
over text files in a streaming
    + * fashion. The program is constructed as a regular {@link StormTopology} and submitted
to Flink for execution in the
    + * same way as to a Storm {@link LocalCluster}.
    + * 
    + * This example shows how to run program directly within Java, thus it cannot be used
to submit a {@link StormTopology}
    + * via Flink command line clients (ie, bin/flink).
    + * 
    + * <p>
    + * The input is a plain text file with lines separated by newline characters.
    + * 
    + * <p>
    + * Usage: <code>WordCount &lt;text path&gt; &lt;result path&gt;</code><br>
    + * If no parameters are provided, the program is run with default data from {@link WordCountData}.
    + * 
    + * <p>
    + * This example shows how to:
    + * <ul>
    + * <li>run a regular Storm program locally on Flink
    + * </ul>
    + */
    +public class StormWordCountLocal {
    +	public final static String topologyId = "Streaming WordCount";
    +	
    +	// *************************************************************************
    +	// PROGRAM
    +	// *************************************************************************
    +	
    +	public static void main(final String[] args) throws Exception {
    +		
    +		if(!WordCountTopology.parseParameters(args)) {
    +			return;
    +		}
    +		
    +		// build Topology the Storm way
    +		final FlinkTopologyBuilder builder = WordCountTopology.buildTopology();
    +		
    +		// execute program locally
    +		final FlinkLocalCluster cluster = FlinkLocalCluster.getLocalCluster();
    +		cluster.submitTopology(topologyId, null, builder.createTopology());
    +		
    +		Utils.sleep(5 * 1000);
    --- End diff --
    
    Storm submitts topologies always in a non-blocking way. This behavior is mimiced in the
compatibility layer.


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