分布式任务调度平台XXL-JOB
<!-- xxl-job-core -->
<dependency>
<groupId>com.xuxueli</groupId>
<artifactId>xxl-job-core</artifactId>
<version>2.3.1</version>
</dependency>@Component
public class SampleXxlJob {
private static Logger logger = LoggerFactory.getLogger(SampleXxlJob.class);
/**
* 1、简单任务示例（Bean模式）
*/
@XxlJob("demoJobHandler")
public void demoJobHandler() throws Exception {
XxlJobHelper.log("XXL-JOB, Hello World.");
for (int i = 0; i < 5; i++) {
XxlJobHelper.log("beat at:" + i);
TimeUnit.SECONDS.sleep(2);
}
// default success
}
/**
* 2、分片广播任务
*/
@XxlJob("shardingJobHandler")
public void shardingJobHandler() throws Exception {
// 分片参数
int shardIndex = XxlJobHelper.getShardIndex();
int shardTotal = XxlJobHelper.getShardTotal();
XxlJobHelper.log("分片参数：当前分片序号 = {}, 总分片数 = {}", shardIndex, shardTotal);
// 业务逻辑
for (int i = 0; i < shardTotal; i++) {
if (i == shardIndex) {
XxlJobHelper.log("第 {} 片, 命中分片开始处理", i);
} else {
XxlJobHelper.log("第 {} 片, 忽略", i);
}
}
}
/**
* 3、命令行任务
*/
@XxlJob("commandJobHandler")
public void commandJobHandler() throws Exception {
String command = XxlJobHelper.getJobParam();
int exitValue = -1;
BufferedReader bufferedReader = null;
try {
// command process
ProcessBuilder processBuilder = new ProcessBuilder();
processBuilder.command(command);
processBuilder.redirectErrorStream(true);
Process process = processBuilder.start();
//Process process = Runtime.getRuntime().exec(command);
BufferedInputStream bufferedInputStream = new BufferedInputStream(process.getInputStream());
bufferedReader = new BufferedReader(new InputStreamReader(bufferedInputStream));
// command log
String line;
while ((line = bufferedReader.readLine()) != null) {
XxlJobHelper.log(line);
}
// command exit
process.waitFor();
exitValue = process.exitValue();
} catch (Exception e) {
XxlJobHelper.log(e);
} finally {
if (bufferedReader != null) {
bufferedReader.close();
}
}
if (exitValue == 0) {
// default success
} else {
XxlJobHelper.handleFail("command exit value(" + exitValue + ") is failed");
}
}
/**
* 4、跨平台Http任务
* 参数示例：
* "url: http://www.baidu.com\n" +
* "method: get\n" +
* "data: content\n";
*/
@XxlJob("httpJobHandler")
public void httpJobHandler() throws Exception {
// param parse
String param = XxlJobHelper.getJobParam();
if (param == null || param.trim().length() == 0) {
XxlJobHelper.log("param[" + param + "] invalid.");
XxlJobHelper.handleFail();
return;
}
String[] httpParams = param.split("\n");
String url = null;
String method = null;
String data = null;
for (String httpParam : httpParams) {
if (httpParam.startsWith("url:")) {
url = httpParam.substring(httpParam.indexOf("url:") + 4).trim();
}
if (httpParam.startsWith("method:")) {
method = httpParam.substring(httpParam.indexOf("method:") + 7).trim().toUpperCase();
}
if (httpParam.startsWith("data:")) {
data = httpParam.substring(httpParam.indexOf("data:") + 5).trim();
}
}
// param valid
if (url == null || url.trim().length() == 0) {
XxlJobHelper.log("url[" + url + "] invalid.");
XxlJobHelper.handleFail();
return;
}
if (method == null || !Arrays.asList("GET", "POST").contains(method)) {
XxlJobHelper.log("method[" + method + "] invalid.");
XxlJobHelper.handleFail();
return;
}
boolean isPostMethod = method.equals("POST");
// request
HttpURLConnection connection = null;
BufferedReader bufferedReader = null;
try {
// connection
URL realUrl = new URL(url);
connection = (HttpURLConnection) realUrl.openConnection();
// connection setting
connection.setRequestMethod(method);
connection.setDoOutput(isPostMethod);
connection.setDoInput(true);
connection.setUseCaches(false);
connection.setReadTimeout(5 * 1000);
connection.setConnectTimeout(3 * 1000);
connection.setRequestProperty("connection", "Keep-Alive");
connection.setRequestProperty("Content-Type", "application/json;charset=UTF-8");
connection.setRequestProperty("Accept-Charset", "application/json;charset=UTF-8");
// do connection
connection.connect();
// data
if (isPostMethod && data != null && data.trim().length() > 0) {
DataOutputStream dataOutputStream = new DataOutputStream(connection.getOutputStream());
dataOutputStream.write(data.getBytes("UTF-8"));
dataOutputStream.flush();
dataOutputStream.close();
}
// valid StatusCode
int statusCode = connection.getResponseCode();
if (statusCode != 200) {
throw new RuntimeException("Http Request StatusCode(" + statusCode + ") Invalid.");
}
// result
bufferedReader = new BufferedReader(new InputStreamReader(connection.getInputStream(), "UTF-8"));
StringBuilder result = new StringBuilder();
String line;
while ((line = bufferedReader.readLine()) != null) {
result.append(line);
}
String responseMsg = result.toString();
XxlJobHelper.log(responseMsg);
return;
} catch (Exception e) {
XxlJobHelper.log(e);
XxlJobHelper.handleFail();
return;
} finally {
try {
if (bufferedReader != null) {
bufferedReader.close();
}
if (connection != null) {
connection.disconnect();
}
} catch (Exception e2) {
XxlJobHelper.log(e2);
}
}
}
/**
* 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；
*/
@XxlJob(value = "demoJobHandler2", init = "init", destroy = "destroy")
public void demoJobHandler2() throws Exception {
XxlJobHelper.log("XXL-JOB, Hello World.");
}
public void init() {
logger.info("init");
}
public void destroy() {
logger.info("destroy");
}
}以下是你可能会用到的中间件
| 官网文档 | github | 使用版本下载 | 详细 | 推荐 | |
|---|---|---|---|---|---|
| xxl-job | xxl-job | xuxueli/xxl-job | v2.4.0 |