com.github.javaclub.delaytask.DelayJob Maven / Gradle / Ivy

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/*
 * @(#)DelayJob.java	2022-4-9
 *
 * Copyright (c) 2022. All Rights Reserved.
 *
 */

package com.github.javaclub.delaytask;

import java.io.Serializable;
import java.util.Map;
import java.util.TreeMap;

import com.github.javaclub.toolbox.model.AttributesDO;

/**
 * DelayJob
 *
 * @author Gerald Chen
 * @version $Id: DelayJob.java 2022-4-9 10:37:24 Exp $
 */
public class DelayJob implements Serializable {

	private static final long serialVersionUID = 3959873982889631156L;
	
	public static final String CONTEXT_PARAM_CRON = "cron"; 								// cron表达式
	public static final String CONTEXT_PARAM_TRIGGER_TIME = "triggerTime";					// 下次执行触发时间
	public static final String CONTEXT_PARAM_TRIGGER_TIME_MILLS = "triggerTimeMills";		// 下次执行触发时间
	public static final String CONTEXT_PARAM_QUEUE = "queue";								// 投递队列
	public static final String CONTEXT_PARAM_DELIVERY_TIMES = "deliveryTimes";  			// 被投递次数
	public static final String CONTEXT_PARAM_MACHINE_HOST = "machineHost";					// 处理的机器节点host名
	public static final String CONTEXT_PARAM_JOB_KEY = "jobKey";							// 当前延时任务实体的唯一jobKey
	
	/**
	 * 同topic下唯一jobKey 

	 * 
	 * 如需要变更任务(如：提前/延后/取消/更新任务实体)，必须指定jobKey的值(在同topic下需全局唯一)
	 */
	private String jobKey; 
	
	/**
	 * 业务实体对象 
	 */
	private T entity;

	private String entityClass;
	 
    private Map context;
    
    public static  DelayJob build(String jobKey, T entity) {
    	return new DelayJob(jobKey, entity);
    }
 
    public DelayJob() {
    }
    
    public DelayJob(T entity) {
        this.entity = entity;
        this.entityClass = entity.getClass().getName();
        this.context = new TreeMap();
    }
 
    public DelayJob(T entity, Map context) {
        this.entity = entity;
        this.entityClass = entity.getClass().getName();
        this.context = null == context ? new TreeMap() : context;
        if (null != entity && entity instanceof AttributesDO) {
        	((AttributesDO) entity).putAll(context);
        }
    }
    
    public DelayJob(String jobKey, T entity) {
    	this.jobKey = jobKey;
        this.entity = entity;
        this.entityClass = entity.getClass().getName();
        this.addContextParam(CONTEXT_PARAM_JOB_KEY, jobKey);
    }
    
	public String getJobKey() {
		return jobKey;
	}

	public void setJobKey(String jobKey) {
		this.jobKey = jobKey;
		this.addContextParam(CONTEXT_PARAM_JOB_KEY, jobKey);
	}

	public String getEntityClass() {
		return entityClass;
	}

	public void setEntityClass(String entityClass) {
		 this.entityClass = entityClass;
	}

	public T getEntity() {
		return entity;
	}

	public void setEntity(T entity) {
		this.entity = entity;
		this.entityClass = entity.getClass().getName();
	}

	public Map getContext() {
		return context;
	}

	public void setContext(Map context) {
		this.context = context;
	}
	
	public DelayJob addContextParam(String key, Object value) {
		if (null == this.context) {
			this.context = new TreeMap();
		}
		this.context.put(key, value);
		if (null != entity && entity instanceof AttributesDO) {
        	((AttributesDO) entity).addAttribute(key, value);
        }
		return this;
	}
	
	public DelayJob addContextParams(Map params) {
		if (null == this.context) {
			this.context = new TreeMap();
		}
		this.context.putAll(params);
		if (null != entity && entity instanceof AttributesDO) {
        	((AttributesDO) entity).putAll(params);
        }
		return this;
	}
	
	public DelayJob removeAttribute(String attrKey) {
		if (null != entity && entity instanceof AttributesDO) {
        	((AttributesDO) entity).removeAttribute(attrKey);
        }
		return this;
	}

}