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package com.github.hengboy.job.schedule;

import com.github.hengboy.job.core.http.MicroJobRestTemplate;
import com.github.hengboy.job.core.http.RestUrlConstants;
import com.github.hengboy.job.core.http.RestUrlTools;
import com.github.hengboy.job.core.thread.JobThread;
import com.github.hengboy.job.core.tools.InetAddressTools;
import com.github.hengboy.job.schedule.http.jersey.ScheduleJerseyResourceConfig;
import com.github.hengboy.job.schedule.resource.MicroJobScheduleResource;
import com.github.hengboy.job.schedule.runnable.*;
import com.github.hengboy.job.schedule.store.JobStore;
import lombok.Setter;
import org.glassfish.jersey.servlet.ServletContainer;
import org.glassfish.jersey.servlet.ServletProperties;
import org.quartz.Scheduler;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.InitializingBean;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.web.servlet.ServletRegistrationBean;
import org.springframework.context.SmartLifecycle;
import org.springframework.http.HttpHeaders;

import java.util.Arrays;

/**
 * 微服务任务调度器工厂实体
 * 该实体对外提供，用于实例化调度中心
 *
 * @author：于起宇 
 * ================================
 * Created with IDEA.
 * Date：2019-01-25
 * Time：14:18
 * 个人博客：http://blog.yuqiyu.com
 * 简书：http://www.jianshu.com/u/092df3f77bca
 * 码云：https://gitee.com/hengboy
 * GitHub：https://github.com/hengyuboy
 * ================================
 * 
 */
public class ScheduleFactoryBean extends ServletRegistrationBean implements InitializingBean, SmartLifecycle {
    /**
     * logger instance
     */
    static Logger logger = LoggerFactory.getLogger(ScheduleFactoryBean.class);
    /**
     * 调度器负载的权重
     */
    @Setter
    private int loadBalanceWeight = 1;
    /**
     * 任务注册中心监听端口号
     */
    @Setter
    private int registryPort;
    /**
     * 任务注册中心ip地址
     */
    @Setter
    private String registryIpAddress;
    /**
     * 调度器绑定的端口号
     */
    @Setter
    private int port;
    /**
     * 心跳同步执行间隔时间，单位：秒
     */
    @Setter
    private int heartDelaySeconds = 5;
    /**
     * 消费者状态检查执行间隔时间，单位：秒
     */
    @Setter
    private int consumerDelaySeconds = 5;
    /**
     * 设置最大重试次数
     */
    @Setter
    private int maxRetryTimes = 2;
    /**
     * 任务数据源对象
     */
    @Autowired
    private JobStore jobStore;
    /**
     * quartz 调度对象
     */
    @Autowired
    private Scheduler scheduler;
    /**
     * restTemplate实例
     */
    @Autowired
    private MicroJobRestTemplate restTemplate;
    /**
     * 调度器运行状态
     */
    private boolean running;

    /**
     * 构造函数初始化相关配置
     */
    public ScheduleFactoryBean() {
        // 设置SpringMvc排除路径前缀
        setUrlMappings(Arrays.asList(RestUrlConstants.PREFIX + "/*"));
        // 设置servlet
        setServlet(new ServletContainer());
        // 添加初始化参数，根据ScheduleJerseyResourceConfig资源ws配置类进行实例化
        addInitParameter(ServletProperties.JAXRS_APPLICATION_CLASS, ScheduleJerseyResourceConfig.class.getName());
    }

    /**
     * 初始化方法
     * - 动态创建任务上报的RPC Server服务
     * - 开启注册中心心跳检查线程
     */
    @Override
    public void start() {

        // 开启心跳检查线程
        JobThread.scheduleWithFixedDelay(new MicroJobRegistryScheduleHeartRunnable(), 1, heartDelaySeconds);

        // 开启任务执行线程
        JobThread.execute(new MicroJobExecuteQueueRunnable());

        // 开启任务重试执行线程
        JobThread.execute(new MicroJobExecuteRetryQueueRunnable());
        
        // 开启任务消费者状态监听
        JobThread.scheduleWithFixedDelay(new MicroJobConsumerStateRunnable(), 1, consumerDelaySeconds);

        // 开启jobKey同步线程
        JobThread.scheduleWithFixedDelay(new MicroJobConsumerJobKeySyncRunnable(), 1, consumerDelaySeconds);

        logger.info("Job scheduling center start successfully");
        running = true;
    }

    /**
     * 调度器被销毁时的处理
     * - 上报任务注册中心、任务下线、断开调度连接
     */
    @Override
    public void stop() {
        // 格式化调度器下线路径
        String downInstanceUrl = RestUrlTools.formatter(registryIpAddress, registryPort, RestUrlConstants.REGISTRY_DOWN_FULL_URL);
        // 执行调度器下线
        restTemplate.postJsonEntity(downInstanceUrl, "", HttpHeaders.EMPTY, Void.class, InetAddressTools.formatterAddress(MicroJobScheduleResource.getIpAddress(), MicroJobScheduleResource.getPort()));
        running = false;
    }

    @Override
    public boolean isRunning() {
        return running;
    }

    /**
     * 设置全局的资源信息
     *
     * @throws Exception 异常信息
     */
    @Override
    public void afterPropertiesSet() throws Exception {
        // restTemplate setter
        MicroJobScheduleResource.setRestTemplate(restTemplate);
        // 设置注册中心ip地址
        MicroJobScheduleResource.setRegistryIpAddress(registryIpAddress);
        // 设置注册中心port
        MicroJobScheduleResource.setRegistryPort(registryPort);
        // 任务存储数据源实例
        MicroJobScheduleResource.setJobStore(jobStore);
        // quartz 调度器实例
        MicroJobScheduleResource.setScheduler(scheduler);
        // 当前任务调度器负载均衡权重
        MicroJobScheduleResource.setScheduleLbWeight(loadBalanceWeight);
        // 设置任务执行最大重试次数
        MicroJobScheduleResource.setMaxRetryTimes(maxRetryTimes);
        // 设置调度器当前ip地址
        MicroJobScheduleResource.setIpAddress(InetAddressTools.getLocalIp());
        // 调度器绑定的端口号
        MicroJobScheduleResource.setPort(port);
        logger.info("Global resource setup completed");
    }
}