SerializationTopology.java

// Copyright 2016 Twitter. All rights reserved.
//
// 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.
package com.twitter.heron.integration_test.topology.serialization;

import java.net.MalformedURLException;

import com.twitter.heron.api.Config;
import com.twitter.heron.integration_test.common.AbstractTestTopology;
import com.twitter.heron.integration_test.common.bolt.IncrementBolt;
import com.twitter.heron.integration_test.core.TestTopologyBuilder;

/**
 * Topology to test Customized Java Serialization
 */
public final class SerializationTopology extends AbstractTestTopology {

  private SerializationTopology(String[] args) throws MalformedURLException {
    super(args);
  }

  @Override
  protected TestTopologyBuilder buildTopology(TestTopologyBuilder builder) {

    CustomObject[] inputObjects = new CustomObject[]{
        new CustomObject("A", 10),
        new CustomObject("B", 20),
        new CustomObject("C", 30)
    };

    builder.setSpout("custom-spout", new CustomSpout(inputObjects), 1);
    builder.setBolt("check-bolt", new CustomCheckBolt(inputObjects), 1)
        .shuffleGrouping("custom-spout");
    builder.setBolt("count-bolt", new IncrementBolt(), 1)
        .shuffleGrouping("check-bolt");
    return builder;
  }

  @Override
  protected Config buildConfig(Config config) {
    config.setSerializationClassName("com.twitter.heron.api.serializer.JavaSerializer");
    return config;
  }

  public static void main(String[] args) throws Exception {
    SerializationTopology topology = new SerializationTopology(args);
    topology.submit();
  }
}