samza-core/src/main/java/org/apache/samza/task/DefaultTaskExecutorFactory.java

/*
 * 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.samza.task;

import com.google.common.util.concurrent.ThreadFactoryBuilder;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import org.apache.samza.config.Config;
import org.apache.samza.config.JobConfig;


/**
 * Default factory for creating the executor used when running tasks in multi-thread mode.
 */
public class DefaultTaskExecutorFactory implements TaskExecutorFactory {

  @Override
  public ExecutorService getTaskExecutor(Config config) {
    int threadPoolSize = new JobConfig(config).getThreadPoolSize();

    return Executors.newFixedThreadPool(threadPoolSize,
        new ThreadFactoryBuilder().setNameFormat("Samza Container Thread-%d").build());
  }
}