package com.xiaopeng.account.config;

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

import java.util.concurrent.ThreadPoolExecutor;

@Configuration
@EnableAsync
public class ThreadPoolConfig {
    
    @Bean(name = "couponSendExecutor")
    public ThreadPoolTaskExecutor couponSendExecutor() {
        ThreadPoolTaskExecutor executor = new ThreadPoolTaskExecutor();
        
        // 核心参数
        executor.setCorePoolSize(5);
        executor.setMaxPoolSize(10);
        executor.setQueueCapacity(20);  // 增大队列容量
        executor.setKeepAliveSeconds(60);
        
        // 线程名称前缀
        executor.setThreadNamePrefix("sendCoupon-");
        
        // 拒绝策略：调用者线程执行
        executor.setRejectedExecutionHandler(new ThreadPoolExecutor.CallerRunsPolicy());
        
        // 等待所有任务结束后再关闭线程池
        executor.setWaitForTasksToCompleteOnShutdown(true);
        executor.setAwaitTerminationSeconds(60);
        
        // 初始化
        executor.initialize();
        
        return executor;
    }
}