001/* 002 * Licensed to the Apache Software Foundation (ASF) under one 003 * or more contributor license agreements. See the NOTICE file 004 * distributed with this work for additional information 005 * regarding copyright ownership. The ASF licenses this file 006 * to you under the Apache License, Version 2.0 (the 007 * "License"); you may not use this file except in compliance 008 * with the License. You may obtain a copy of the License at 009 * 010 * http://www.apache.org/licenses/LICENSE-2.0 011 * 012 * Unless required by applicable law or agreed to in writing, 013 * software distributed under the License is distributed on an 014 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 015 * KIND, either express or implied. See the License for the 016 * specific language governing permissions and limitations 017 * under the License. 018 */ 019package org.apache.reef.runtime.local.client; 020 021import org.apache.reef.tang.ExternalConstructor; 022 023import javax.inject.Inject; 024import java.util.concurrent.ExecutorService; 025import java.util.concurrent.Executors; 026import java.util.logging.Level; 027import java.util.logging.Logger; 028 029/** 030 * Used to make instances of ExecutorService via tang. 031 */ 032public final class ExecutorServiceConstructor implements ExternalConstructor<ExecutorService> { 033 private static final Logger LOG = Logger.getLogger(ExecutorServiceConstructor.class.getName()); 034 035 @Inject 036 ExecutorServiceConstructor() { 037 } 038 039 @Override 040 public ExecutorService newInstance() { 041 LOG.log(Level.FINEST, "Instantiating new 'ExecutorService'."); 042 return Executors.newCachedThreadPool(); 043 } 044}