package com.xxl.job.executor.service.jobhandler;
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import com.xxl.job.core.context.XxlJobHelper;
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import com.xxl.job.core.handler.annotation.XxlJob;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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import org.springframework.stereotype.Component;
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import java.io.BufferedInputStream;
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import java.io.BufferedReader;
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import java.io.DataOutputStream;
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import java.io.InputStreamReader;
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import java.net.HttpURLConnection;
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import java.net.URL;
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import java.util.Arrays;
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import java.util.concurrent.TimeUnit;
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/**
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* XxlJob开发示例（Bean模式）
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*
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* 开发步骤：
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* 1、任务开发：在Spring Bean实例中，开发Job方法；
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* 2、注解配置：为Job方法添加注解 "@XxlJob(value="自定义jobhandler名称", init = "JobHandler初始化方法", destroy = "JobHandler销毁方法")"，注解value值对应的是调度中心新建任务的JobHandler属性的值。
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* 3、执行日志：需要通过 "XxlJobHelper.log" 打印执行日志；
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* 4、任务结果：默认任务结果为 "成功" 状态，不需要主动设置；如有诉求，比如设置任务结果为失败，可以通过 "XxlJobHelper.handleFail/handleSuccess" 自主设置任务结果；
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*
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* @author xuxueli 2019-12-11 21:52:51
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*/
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@Component
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public class SampleXxlJob {
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private static Logger logger = LoggerFactory.getLogger(SampleXxlJob.class);
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/**
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* 1、简单任务示例（Bean模式）
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*/
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@XxlJob("demoJobHandler")
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public void demoJobHandler() throws Exception {
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XxlJobHelper.log("XXL-JOB, Hello World.");
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for (int i = 0; i < 5; i++) {
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XxlJobHelper.log("beat at:" + i);
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TimeUnit.SECONDS.sleep(2);
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}
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// default success
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}
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/**
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* 2、分片广播任务
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*/
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@XxlJob("shardingJobHandler")
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public void shardingJobHandler() throws Exception {
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// 分片参数
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int shardIndex = XxlJobHelper.getShardIndex();
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int shardTotal = XxlJobHelper.getShardTotal();
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XxlJobHelper.log("分片参数：当前分片序号 = {}, 总分片数 = {}", shardIndex, shardTotal);
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// 业务逻辑
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for (int i = 0; i < shardTotal; i++) {
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if (i == shardIndex) {
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XxlJobHelper.log("第 {} 片, 命中分片开始处理", i);
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} else {
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XxlJobHelper.log("第 {} 片, 忽略", i);
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}
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}
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}
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/**
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* 3、命令行任务
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*/
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@XxlJob("commandJobHandler")
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public void commandJobHandler() throws Exception {
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String command = XxlJobHelper.getJobParam();
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int exitValue = -1;
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BufferedReader bufferedReader = null;
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try {
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// command process
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ProcessBuilder processBuilder = new ProcessBuilder();
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processBuilder.command(command);
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processBuilder.redirectErrorStream(true);
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Process process = processBuilder.start();
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//Process process = Runtime.getRuntime().exec(command);
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BufferedInputStream bufferedInputStream = new BufferedInputStream(process.getInputStream());
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bufferedReader = new BufferedReader(new InputStreamReader(bufferedInputStream));
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// command log
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String line;
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while ((line = bufferedReader.readLine()) != null) {
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XxlJobHelper.log(line);
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}
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// command exit
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process.waitFor();
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exitValue = process.exitValue();
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} catch (Exception e) {
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XxlJobHelper.log(e);
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} finally {
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if (bufferedReader != null) {
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bufferedReader.close();
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}
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}
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if (exitValue == 0) {
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// default success
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} else {
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XxlJobHelper.handleFail("command exit value("+exitValue+") is failed");
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}
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}
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/**
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* 4、跨平台Http任务
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* 参数示例：
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* "url: http://www.baidu.com\n" +
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* "method: get\n" +
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* "data: content\n";
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*/
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@XxlJob("httpJobHandler")
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public void httpJobHandler() throws Exception {
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// param parse
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String param = XxlJobHelper.getJobParam();
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if (param==null || param.trim().length()==0) {
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XxlJobHelper.log("param["+ param +"] invalid.");
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XxlJobHelper.handleFail();
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return;
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}
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String[] httpParams = param.split("\n");
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String url = null;
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String method = null;
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String data = null;
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for (String httpParam: httpParams) {
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if (httpParam.startsWith("url:")) {
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url = httpParam.substring(httpParam.indexOf("url:") + 4).trim();
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}
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if (httpParam.startsWith("method:")) {
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method = httpParam.substring(httpParam.indexOf("method:") + 7).trim().toUpperCase();
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}
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if (httpParam.startsWith("data:")) {
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data = httpParam.substring(httpParam.indexOf("data:") + 5).trim();
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}
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}
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// param valid
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if (url==null || url.trim().length()==0) {
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XxlJobHelper.log("url["+ url +"] invalid.");
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XxlJobHelper.handleFail();
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return;
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}
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if (method==null || !Arrays.asList("GET", "POST").contains(method)) {
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XxlJobHelper.log("method["+ method +"] invalid.");
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XxlJobHelper.handleFail();
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return;
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}
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boolean isPostMethod = method.equals("POST");
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// request
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HttpURLConnection connection = null;
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BufferedReader bufferedReader = null;
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try {
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// connection
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URL realUrl = new URL(url);
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connection = (HttpURLConnection) realUrl.openConnection();
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// connection setting
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connection.setRequestMethod(method);
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connection.setDoOutput(isPostMethod);
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connection.setDoInput(true);
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connection.setUseCaches(false);
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connection.setReadTimeout(5 * 1000);
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connection.setConnectTimeout(3 * 1000);
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connection.setRequestProperty("connection", "Keep-Alive");
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connection.setRequestProperty("Content-Type", "application/json;charset=UTF-8");
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connection.setRequestProperty("Accept-Charset", "application/json;charset=UTF-8");
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// do connection
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connection.connect();
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// data
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if (isPostMethod && data!=null && data.trim().length()>0) {
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DataOutputStream dataOutputStream = new DataOutputStream(connection.getOutputStream());
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dataOutputStream.write(data.getBytes("UTF-8"));
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dataOutputStream.flush();
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dataOutputStream.close();
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}
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// valid StatusCode
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int statusCode = connection.getResponseCode();
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if (statusCode != 200) {
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throw new RuntimeException("Http Request StatusCode(" + statusCode + ") Invalid.");
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}
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// result
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bufferedReader = new BufferedReader(new InputStreamReader(connection.getInputStream(), "UTF-8"));
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StringBuilder result = new StringBuilder();
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String line;
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while ((line = bufferedReader.readLine()) != null) {
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result.append(line);
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}
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String responseMsg = result.toString();
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XxlJobHelper.log(responseMsg);
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return;
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} catch (Exception e) {
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XxlJobHelper.log(e);
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XxlJobHelper.handleFail();
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return;
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} finally {
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try {
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if (bufferedReader != null) {
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bufferedReader.close();
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}
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if (connection != null) {
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connection.disconnect();
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}
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} catch (Exception e2) {
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XxlJobHelper.log(e2);
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}
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}
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}
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/**
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* 5、生命周期任务示例：任务初始化与销毁时，支持自定义相关逻辑；
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*/
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@XxlJob(value = "demoJobHandler2", init = "init", destroy = "destroy")
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public void demoJobHandler2() throws Exception {
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XxlJobHelper.log("XXL-JOB, Hello World.");
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}
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public void init(){
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logger.info("init");
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}
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public void destroy(){
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logger.info("destroy");
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}
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}
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