线程池 | 配置及持久化异常日志

1. yml属性配置

pojo:
  web-config:
    thread-pool:
      corePoolSize: 100
      maximumPoolSize: 200
      keepAliveTime: 500
      queueCapacity: 1000
      threadNamePrefix: thead-test
      rejectPolicy: callerRuns
      workQueuePolicy: linked

2. prop属性pojo

@Data
@ConfigurationProperties(prefix = "pojo.web-config.thread-pool")
public class WebConfigThreadPollProp {


    /**  核心基本数量(没有多线程任务，仍然保持该数量)  */
    private int corePoolSize;
    /**  线程池最大能容忍的线程数  */
    private int maximumPoolSize;
    /**  线程存活时间    */
    private long keepAliveTime;
    /**  请求等待队列  */
    private int queueCapacity;
    /**  线程名前缀  */
    private String threadNamePrefix;
    /**  排队策略  */
    private String workQueuePolicy;
    /**  拒绝策略  */
    private String rejectPolicy;


    public interface QueuePolicyConstant{

        /**  不缓存任务到队列，直接执行任务  */
        String SYNCHRONOUS ="synchronous";
        /**  基于数组的先进先出阻塞队列   */
        String ARRAY = "array";
        /**  基于链表的先进先出阻塞队列，默认大小为Integer.max  */
        String LINKED ="linked";


    }
    public interface RejectPolicyConstant{

        /**  不在新线程中执行任务，而是有调用者所在的线程来执行  */
        String CALLER_RUNS_POLICY    = "callerRuns";
        /**  抛出异常，拒绝执行  */
        String ABORT_POLICY          = "abort";
        /**  丢弃任务但不抛出异常  */
        String DISCARD_POLICY        = "discard";
        /**  丢弃队列最头部的  */
        String DISCARD_OLDEST_POLICY = "discardOldest";

    }
}

3. Configurable配置

@EnableAsync
@Configuration
@EnableConfigurationProperties(WeiareWebConfigThreadPollProp.class)
public class ThreadConfig implements AsyncConfigurer {

    @Resource
    private  WebConfigThreadPollProp webConfigProp;
    @Autowired
    private SysOptLogger                  sysOptLogger;

    @Override
    @Bean(THREAD_POOL_EXECUTOR)
    @ConditionalOnMissingBean(Executor.class)
    public Executor getAsyncExecutor() {

        BlockingQueue workQueue;
        if (webConfigProp.getQueueCapacity() < 1) {
            webConfigProp.setQueueCapacity(Integer.MAX_VALUE);
        }

        // 排队策略
        switch (webConfigProp.getWorkQueuePolicy()) {
            case ARRAY:
                workQueue = new ArrayBlockingQueue<>(webConfigProp.getQueueCapacity());
                break;
            case LINKED:
                workQueue = new LinkedBlockingQueue<>(webConfigProp.getQueueCapacity());
                break;
            case SYNCHRONOUS:
                workQueue = new SynchronousQueue<>();
            default:
                workQueue = new ArrayBlockingQueue<>(webConfigProp.getQueueCapacity());
                break;
        }

        // rejection-policy拒绝策略 ：当pool已经达到max size的时候，如何处理新任务
        RejectedExecutionHandler rejectedExecutionHandler;
        switch (webConfigProp.getRejectPolicy()) {
            case ABORT_POLICY:
                rejectedExecutionHandler = new ThreadPoolExecutor.AbortPolicy();
                break;
            case DISCARD_POLICY:
                rejectedExecutionHandler = new ThreadPoolExecutor.DiscardPolicy();
                break;
            case DISCARD_OLDEST_POLICY:
                rejectedExecutionHandler = new ThreadPoolExecutor.DiscardOldestPolicy();
                break;
            default:
                rejectedExecutionHandler = new ThreadPoolExecutor.CallerRunsPolicy();
                break;
        }


        String threadName = webConfigProp.getThreadNamePrefix()+"-%d";
        ThreadFactory namedThreadFactory = new ThreadFactoryBuilder().setNameFormat(threadName).build();
        //todo 配置线程池
        ThreadPoolExecutor executor = new ThreadPoolExecutor(webConfigProp.getCorePoolSize(), webConfigProp.getMaximumPoolSize(), webConfigProp.getKeepAliveTime(), TimeUnit.SECONDS, workQueue, namedThreadFactory, rejectedExecutionHandler);

        //执行初始化
        executor.prestartAllCoreThreads();
        return executor;
    }
      @Override
    @Bean
    @ConditionalOnMissingBean(AsyncUncaughtExceptionHandler.class)
    public AsyncUncaughtExceptionHandler getAsyncUncaughtExceptionHandler(){
//见4.持久化异步异常日志
    }

}

4. 持久化异步异常日志

    @Override
    @Bean
    @ConditionalOnMissingBean(AsyncUncaughtExceptionHandler.class)
    public AsyncUncaughtExceptionHandler getAsyncUncaughtExceptionHandler() {
        return (throwable, method, objects) -> {
            if (sysOptLogger != null) {
//持久化日志到本地数据库
// INSERT INTO SYS_OPT_LOG ( ID,DELETED,CREATE_TIME,MODIFIED_TIME,LOG_TYPE,TITLE,CHANNEL,ORDER_NO,CONTENT,STATUS,NOTIFY_DETAIL,NOTIFY_RESULT ) VALUES( ?,?,?,?,?,?,?,?,?,?,?,? ) 
// Parameters: CFCYX1K2W84G0WJRYDUZ(String), 0(Integer), 2018-10-19 11:43:03.513(Timestamp), 2018-10-19 11:43:03.513(Timestamp), 3(String), weiare-yc-0异步任务异常(String), 02(String), java.lang.NumberFormatException:For input string: "22s2"(String), 异步任务执行失败(String), 0(String), com.??.test.facade.YcThreadTestFacade.helloAsync(String), [](String)

//日志构建器建造并持久化异常日志
sysOptLogger.setHead(Thread.currentThread().getName() + "异步任务异常", SysOptLogConstant.LogType.RUNTIME_EXCEPTION, SysOptLogConstant.Channel.THREAD_POOL_EXCEPTION)
.setOrderNo(throwable.getClass().getName() + Symbol.COLON + throwable.getMessage())
.setNotify(method.getDeclaringClass().getName() + Symbol.DOT + method.getName(), JsonMapper.getMapper().toJson(objects))
.isSuccess(false, "异步任务执行失败")
.save();
            }
        };
    }

5. 测试

        @RequestMapping
    @ResponseBody
    public String test(){
        ycThreadTestFacade.helloAsync();
        return "hello";
    }

        @Async
    public String helloAsync(){
System.out.println(StringFormat.formatBracket("这个任务是在线程{}中异步执行的",Thread.currentThread().getName()));
        Integer.parseInt("22s2");
        return "";
    }

// 控制台打印 ：这个任务是在线程thead-test-0中异步执行的"
    

// 查看数据库异步任务异常日志：

id	log_type	title	channel	info	content	is_success	detail	log_time
1	3	thead-test-0异步任务异常	02	java.lang.NumberFormatException:For input string: "22s2"	异步任务执行失败	0	com.??.test.facade.YcThreadTestFacade.helloAsync	2018-10-19 11:43:00