org.eclipse.osee.executor.admin.internal.ExecutorCache.java Source code

Introduction

Here is the source code for org.eclipse.osee.executor.admin.internal.ExecutorCache.java

Source

/*******************************************************************************
 * Copyright (c) 2004, 2007 Boeing.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *     Boeing - initial API and implementation
 *******************************************************************************/
package org.eclipse.osee.executor.admin.internal;

import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
import org.eclipse.osee.framework.jdk.core.type.OseeArgumentException;
import org.eclipse.osee.framework.jdk.core.type.OseeStateException;
import com.google.common.util.concurrent.ListeningExecutorService;

/**
 * @author Roberto E. Escobar
 */
public class ExecutorCache {

    private final ConcurrentHashMap<String, ListeningExecutorService> executors = new ConcurrentHashMap<String, ListeningExecutorService>();

    public void put(String id, ListeningExecutorService service) {
        if (executors.putIfAbsent(id, service) != null) {
            throw new OseeStateException("Error non-unique executor detected [%s]", id);
        }
    }

    public ListeningExecutorService getById(String id) {
        if (id == null || id.length() <= 0) {
            throw new OseeArgumentException("Error - executorId cannot be null");
        }
        ListeningExecutorService executor = executors.get(id);
        if (executor != null && (executor.isShutdown() || executor.isTerminated())) {
            executors.remove(id);
            executor = null;
        }
        return executor;
    }

    public Map<String, ListeningExecutorService> getExecutors() {
        return executors;
    }

    public void remove(String id) {
        executors.remove(id);
    }

}