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/*******************************************************************************
 *
 * MIT License
 *
 * Copyright (c) 2016 Tiago de Freitas Lima
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 *
 *******************************************************************************/
package com.github.ljtfreitas.restify.util.async;

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

public class DisposableExecutors {

	private static final Executor IMMEDIATE_EXECUTOR = Runnable::run;

	public static Executor immediate() {
		return IMMEDIATE_EXECUTOR;
	}

	public static ExecutorService newCachedThreadPool() {
		return disposable(Executors.newCachedThreadPool(new DaemonThreadFactory("java-restify-cached-thread-pool")));
	}

	public static ExecutorService newSingleThreadExecutor() {
		return disposable(Executors.newSingleThreadExecutor(new DaemonThreadFactory("java-restify-single-thread-executor")));
	}

	public static ScheduledExecutorService newSingleThreadScheduledExecutor() {
		return (ScheduledExecutorService) disposable(Executors.newSingleThreadScheduledExecutor(new DaemonThreadFactory("java-restify-single-thread-scheduled")));
	}

	public static ScheduledExecutorService newScheduledThreadPool(int size) {
		return (ScheduledExecutorService) disposable(Executors.newScheduledThreadPool(size, new DaemonThreadFactory("java-restify-scheduled-thread-pool")));
	}

	private static ExecutorService disposable(ExecutorService executorService) {
		Runtime.getRuntime().addShutdownHook(new Thread(executorService::shutdownNow));
		return executorService;
	}
}