package com.yssh.config;

import java.util.concurrent.ThreadPoolExecutor;

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.scheduling.annotation.EnableAsync;
import org.springframework.scheduling.concurrent.ThreadPoolTaskExecutor;

/**
 * 线程池配置
 *
 * @author tam
 **/
@Configuration
@EnableAsync
public class ThreadPoolConfig {
	// 核心线程池大小
	private int corePoolSize = 50;

	// 最大可创建的线程数
	private int maxPoolSize = 200;

	// 队列最大长度
	private int queueCapacity = 1000;

	// 线程池维护线程所允许的空闲时间
	private int keepAliveSeconds = 300;
	
	//配置线程池中的线程的名称前缀
	private String threadNamePrefix = "async-importDB-";

	@Bean(name = "threadPoolTaskExecutor")
	public ThreadPoolTaskExecutor threadPoolTaskExecutor() {
		ThreadPoolTaskExecutor executor = new ThreadPoolTaskExecutor();
		executor.setMaxPoolSize(maxPoolSize);
		executor.setCorePoolSize(corePoolSize);
		executor.setQueueCapacity(queueCapacity);
		executor.setKeepAliveSeconds(keepAliveSeconds);
		executor.setThreadNamePrefix(threadNamePrefix);
		// 线程池对拒绝任务(无线程可用)的处理策略
		executor.setRejectedExecutionHandler(new ThreadPoolExecutor.CallerRunsPolicy());
		return executor;
	}

}