/**
 *  Copyright (c) 2011, WSO2 Inc. (http://www.wso2.org) 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 org.wso2.carbon.ntask.core.impl;

import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;

import org.quartz.SchedulerConfigException;
import org.quartz.spi.ThreadPool;

/**
 * Quartz thread pool implementation which uses a cached thread executor service. 
 */
public class QuartzCachedThreadPool implements ThreadPool {

    private ExecutorService executor;

    @Override
    public int blockForAvailableThreads() {
        return Integer.MAX_VALUE;
    }

    @Override
    public int getPoolSize() {
        return Integer.MAX_VALUE;
    }

    @Override
    public void initialize() throws SchedulerConfigException {
        this.executor = Executors.newCachedThreadPool();
    }

    @Override
    public boolean runInThread(Runnable task) {
        this.executor.submit(task);
        return true;
    }

    @Override
    public void setInstanceId(String instanceId) {
    }

    @Override
    public void setInstanceName(String instanceName) {
    }

    @Override
    public void shutdown(boolean waitForJobsToComplete) {
        if (waitForJobsToComplete) {
            this.executor.shutdown();
        } else {
            this.executor.shutdownNow();
        }
    }

}
