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/*
 *      Copyright (c) 2018-2028, Chill Zhuang All rights reserved.
 *
 *  Redistribution and use in source and binary forms, with or without
 *  modification, are permitted provided that the following conditions are met:
 *
 *  Redistributions of source code must retain the above copyright notice,
 *  this list of conditions and the following disclaimer.
 *  Redistributions in binary form must reproduce the above copyright
 *  notice, this list of conditions and the following disclaimer in the
 *  documentation and/or other materials provided with the distribution.
 *  Neither the name of the dreamlu.net developer nor the names of its
 *  contributors may be used to endorse or promote products derived from
 *  this software without specific prior written permission.
 *  Author: Chill 庄骞 (smallchill@163.com)
 */
package org.springblade.core.boot.config;
 
import lombok.AllArgsConstructor;
import lombok.RequiredArgsConstructor;
import lombok.extern.slf4j.Slf4j;
import org.springblade.core.boot.error.ErrorType;
import org.springblade.core.boot.error.ErrorUtil;
import org.springblade.core.context.BladeContext;
import org.springblade.core.context.BladeRunnableWrapper;
import org.springblade.core.launch.props.BladeProperties;
import org.springblade.core.log.constant.EventConstant;
import org.springblade.core.log.event.ErrorLogEvent;
import org.springblade.core.log.model.LogError;
import org.springframework.aop.interceptor.AsyncUncaughtExceptionHandler;
import org.springframework.boot.task.TaskExecutorCustomizer;
import org.springframework.boot.task.TaskSchedulerCustomizer;
import org.springframework.context.ApplicationEventPublisher;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.lang.NonNull;
import org.springframework.scheduling.annotation.AsyncConfigurerSupport;
import org.springframework.scheduling.annotation.EnableAsync;
import org.springframework.scheduling.annotation.EnableScheduling;
import org.springframework.util.ErrorHandler;
 
import java.lang.reflect.Method;
import java.util.HashMap;
import java.util.Map;
import java.util.concurrent.ThreadPoolExecutor;
 
/**
 * 异步处理
 *
 * @author Chill
 */
@Slf4j
@Configuration
@EnableAsync
@EnableScheduling
@AllArgsConstructor
public class BladeExecutorConfiguration extends AsyncConfigurerSupport {
 
    private final BladeContext bladeContext;
    private final BladeProperties bladeProperties;
    private final ApplicationEventPublisher publisher;
 
    @Bean
    public TaskExecutorCustomizer taskExecutorCustomizer() {
        return taskExecutor -> {
            taskExecutor.setThreadNamePrefix("async-task-");
            taskExecutor.setTaskDecorator(BladeRunnableWrapper::new);
            taskExecutor.setRejectedExecutionHandler(new ThreadPoolExecutor.CallerRunsPolicy());
        };
    }
 
    @Bean
    public TaskSchedulerCustomizer taskSchedulerCustomizer() {
        return taskExecutor -> {
            taskExecutor.setThreadNamePrefix("async-scheduler");
            taskExecutor.setRejectedExecutionHandler(new ThreadPoolExecutor.CallerRunsPolicy());
            taskExecutor.setErrorHandler(new BladeErrorHandler(bladeContext, bladeProperties, publisher));
        };
    }
 
    @Override
    public AsyncUncaughtExceptionHandler getAsyncUncaughtExceptionHandler() {
        return new BladeAsyncUncaughtExceptionHandler(bladeContext, bladeProperties, publisher);
    }
 
    @RequiredArgsConstructor
    private static class BladeAsyncUncaughtExceptionHandler implements AsyncUncaughtExceptionHandler {
        private final BladeContext bladeContext;
        private final BladeProperties bladeProperties;
        private final ApplicationEventPublisher eventPublisher;
 
        @Override
        public void handleUncaughtException(@NonNull Throwable error, @NonNull Method method, @NonNull Object... params) {
            log.error("Unexpected exception occurred invoking async method: {}", method, error);
            LogError logError = new LogError();
            // 服务信息、环境、异常类型
            logError.setParams(ErrorType.ASYNC.getType());
            logError.setEnv(bladeProperties.getEnv());
            logError.setServiceId(bladeProperties.getName());
            logError.setRequestUri(bladeContext.getRequestId());
            // 堆栈信息
            ErrorUtil.initErrorInfo(error, logError);
            Map<String, Object> event = new HashMap<>(16);
            event.put(EventConstant.EVENT_LOG, logError);
            eventPublisher.publishEvent(new ErrorLogEvent(event));
        }
    }
 
    @RequiredArgsConstructor
    private static class BladeErrorHandler implements ErrorHandler {
        private final BladeContext bladeContext;
        private final BladeProperties bladeProperties;
        private final ApplicationEventPublisher eventPublisher;
 
        @Override
        public void handleError(@NonNull Throwable error) {
            log.error("Unexpected scheduler exception", error);
            LogError logError = new LogError();
            // 服务信息、环境、异常类型
            logError.setParams(ErrorType.SCHEDULER.getType());
            logError.setServiceId(bladeProperties.getName());
            logError.setEnv(bladeProperties.getEnv());
            logError.setRequestUri(bladeContext.getRequestId());
            // 堆栈信息
            ErrorUtil.initErrorInfo(error, logError);
            Map<String, Object> event = new HashMap<>(16);
            event.put(EventConstant.EVENT_LOG, logError);
            eventPublisher.publishEvent(new ErrorLogEvent(event));
        }
    }
 
}