Spring定时任务动态取消/创建/修改
作者：互联网
首先配置ThreadPoolTaskScheduler线程池：
package cn.demo.support.config;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.scheduling.concurrent.ThreadPoolTaskScheduler;
@Configuration
public class ScheduleConfig {
@Bean(destroyMethod = "shutdown")
public ThreadPoolTaskScheduler taskExecutor() {
ThreadPoolTaskScheduler executor = new ThreadPoolTaskScheduler();
executor.setPoolSize(20);
executor.setThreadNamePrefix("taskExecutor-");
executor.setWaitForTasksToCompleteOnShutdown(true);
executor.setAwaitTerminationSeconds(60);
return executor;
}
}
配置定时任务，业务类中注入HiveClusterSyncScheduler即可调用：
1 package cn.jsfund.ngdp.support.batchSchedule;
2
3 import java.util.ArrayList;
4 import java.util.Date;
5 import java.util.List;
6 import java.util.Map;
7 import java.util.Map.Entry;
8 import java.util.concurrent.ConcurrentHashMap;
9 import java.util.concurrent.ScheduledFuture;
10
11 import javax.annotation.PostConstruct;
12 import javax.annotation.Resource;
13
14 import org.apache.commons.lang.StringUtils;
15 import org.slf4j.Logger;
16 import org.slf4j.LoggerFactory;
17 import org.springframework.beans.factory.annotation.Autowired;
18 import org.springframework.jdbc.core.JdbcTemplate;
19 import org.springframework.scheduling.Trigger;
20 import org.springframework.scheduling.TriggerContext;
21 import org.springframework.scheduling.concurrent.ThreadPoolTaskScheduler;
22 import org.springframework.scheduling.support.CronSequenceGenerator;
23 import org.springframework.scheduling.support.CronTrigger;
24 import org.springframework.stereotype.Component;
25 import org.springframework.util.ObjectUtils;
26
27 import cn.jsfund.ngdp.support.config.BasicConfig;
28 import cn.jsfund.ngdp.support.exception.ServiceException;
29 import cn.jsfund.ngdp.support.model.bigdata.TaskDef;
30 import cn.jsfund.ngdp.support.web.service.bigdata.HiveClusterSyncService;
31
32 @SuppressWarnings("rawtypes")
33 @Component
34 public class HiveClusterSyncScheduler {
35
36 @Resource
37 private JdbcTemplate dmJdbcTemplate;
38
39 @Resource
40 private BasicConfig basicConfig;
41
42 @Resource
43 HiveClusterSyncService hiveClusterSyncService;//业务类
44
45 @Autowired
46 ThreadPoolTaskScheduler threadPoolTaskScheduler;
47
48 private static final Logger logger = LoggerFactory.getLogger(HiveClusterSyncScheduler.class);
49
50 private static final String MAPTASKKEY = "map_task_key";
51
52 private static Map<String, ScheduledFuture> scheduledFutureMap = new ConcurrentHashMap<String, ScheduledFuture>();
53
54 @PostConstruct
55 public void init() {
56 refreshTasks();
57 }
58
59 // @Scheduled(cron = "${bigData.hive.backup.schduler.refresh.crontab}")
60 public void refreshTasks() {
61
62 if (!"true".equals(basicConfig.getBackupEnabled())) {
63 logger.info("*************hive集群同步开关未开启，结束计划任务刷新.*************");
64 return;
65 }
66 for (Entry<String, ScheduledFuture> entry : scheduledFutureMap.entrySet()) {
67 ScheduledFuture sf = entry.getValue();
68 if (sf != null) {
69 sf.cancel(false);
70 }
71 }
72 scheduledFutureMap.clear();
73
74 logger.info("*************开始扫描数据库，刷新定时任务*************");
75
76 List<TaskDef> list = new ArrayList<>();
77
78 try {
79 list = hiveClusterSyncService.queryTaskDefs(null, null, null, null, null, "1", null)
80 .getContent();
81 } catch (Exception e) {
82 logger.info("查询数据库异常，代码执行结束，异常信息：", e);
83 }
84 if (ObjectUtils.isEmpty(list)) {
85 logger.info("查询启动状态的任务记录为空，代码执行结束。");
86 return;
87 }
88 for (TaskDef taskDef : list) {
89 String taskId = taskDef.getId();
90 String crontab = taskDef.getCrontab();
91 if (StringUtils.isBlank(crontab)) {
92 continue;
93 }
94
95 TaskThread taskThread = new TaskThread(taskId, crontab);
96 boolean isValidExp = CronSequenceGenerator.isValidExpression(crontab);
97 if (!isValidExp) {
98 logger.error("当前cron表达式无效，taskId={},cronExpression={}", taskId, crontab);
99 continue;
100 }
101 ScheduledFuture<?> scheduledFuture = threadPoolTaskScheduler.schedule(taskThread,
102 new Trigger() {
103
104 @Override
105 public Date nextExecutionTime(TriggerContext triggerContext) {
106
107 return new CronTrigger(crontab).nextExecutionTime(triggerContext);
108 }
109 });
110
111 scheduledFutureMap.put(MAPTASKKEY + taskId, scheduledFuture);
112 }
113 logger.info("*************刷新定时任务完成*************");
114 }
115
116 //添加计划
117 public void addTask(String taskId, String crontab) {
118 if (!"true".equals(basicConfig.getBackupEnabled())) {
119 return;
120 }
121 TaskThread taskThread = new TaskThread(taskId, crontab);
122 ScheduledFuture<?> scheduledFuture = threadPoolTaskScheduler.schedule(taskThread,
123 new Trigger() {
124 @Override
125 public Date nextExecutionTime(TriggerContext triggerContext) {
126 return new CronTrigger(crontab).nextExecutionTime(triggerContext);
127 }
128 });
129 scheduledFutureMap.put(MAPTASKKEY + taskId, scheduledFuture);
130 }
131
132 //取消计划
133 public void cancelTask(Object... taskId) {
134 for (int i = 0; i < taskId.length; i++) {
135 ScheduledFuture sf = scheduledFutureMap.get(MAPTASKKEY + taskId[i]);
136 if (sf != null) {
137 sf.cancel(false);
138 scheduledFutureMap.remove(MAPTASKKEY + taskId[i]);
139 }
140 }
141 }
142
143 //更新计划:先取消再添加
144 public void updateScheduleTask(String taskId, String crontab) throws ServiceException {
145 if (!"true".equals(basicConfig.getBackupEnabled())) {
146 return;
147 }
148 ScheduledFuture sf = scheduledFutureMap.get(MAPTASKKEY + taskId);
149 if (sf != null) {
150 sf.cancel(false);
151 scheduledFutureMap.remove(MAPTASKKEY + taskId);
152 }
153 TaskThread taskThread = new TaskThread(taskId, crontab);
154 ScheduledFuture<?> scheduledFuture = threadPoolTaskScheduler.schedule(taskThread,
155 new Trigger() {
156 @Override
157 public Date nextExecutionTime(TriggerContext triggerContext) {
158 return new CronTrigger(crontab).nextExecutionTime(triggerContext);
159 }
160 });
161 scheduledFutureMap.put(MAPTASKKEY + taskId, scheduledFuture);
162 }
163
164 class TaskThread extends Thread {
165
166 private String taskId;
167
168 private String crontab;
169
170 public TaskThread(String taskId, String crontab) {
171 this.taskId = taskId;
172 this.crontab = crontab;
173 }
174
175 public void run() {
176 try {
177 hiveClusterSyncService.bootTask(taskId, crontab);
178 } catch (Exception e) {
179 logger.info("任务(taskId={})结束初始化，异常信息：{}", taskId, e.getMessage());
180 }
181 }
182 }
183
184 }
package cn.jsfund.ngdp.support.batchSchedule;
import java.util.ArrayList;import java.util.Date;import java.util.List;import java.util.Map;import java.util.Map.Entry;import java.util.concurrent.ConcurrentHashMap;import java.util.concurrent.ScheduledFuture;
import javax.annotation.PostConstruct;import javax.annotation.Resource;
import org.apache.commons.lang.StringUtils;import org.slf4j.Logger;import org.slf4j.LoggerFactory;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.jdbc.core.JdbcTemplate;import org.springframework.scheduling.Trigger;import org.springframework.scheduling.TriggerContext;import org.springframework.scheduling.concurrent.ThreadPoolTaskScheduler;import org.springframework.scheduling.support.CronSequenceGenerator;import org.springframework.scheduling.support.CronTrigger;import org.springframework.stereotype.Component;import org.springframework.util.ObjectUtils;
import cn.jsfund.ngdp.support.config.BasicConfig;import cn.jsfund.ngdp.support.exception.ServiceException;import cn.jsfund.ngdp.support.model.bigdata.TaskDef;import cn.jsfund.ngdp.support.web.service.bigdata.HiveClusterSyncService;
@SuppressWarnings("rawtypes")@Componentpublic class HiveClusterSyncScheduler {
@Resource private JdbcTemplate dmJdbcTemplate;
@Resource private BasicConfig basicConfig;
@Resource HiveClusterSyncService hiveClusterSyncService;
@Autowired ThreadPoolTaskScheduler threadPoolTaskScheduler;
private static final Logger logger = LoggerFactory.getLogger(HiveClusterSyncScheduler.class);
private static final String MAPTASKKEY = "map_task_key";
private static Map<String, ScheduledFuture> scheduledFutureMap = new ConcurrentHashMap<String, ScheduledFuture>();
@PostConstruct public void init() { refreshTasks(); }
// @Scheduled(cron = "${bigData.hive.backup.schduler.refresh.crontab}") public void refreshTasks() {
if (!"true".equals(basicConfig.getBackupEnabled())) { logger.info("*************hive集群同步开关未开启，结束计划任务刷新.*************"); return; } for (Entry<String, ScheduledFuture> entry : scheduledFutureMap.entrySet()) { ScheduledFuture sf = entry.getValue(); if (sf != null) { sf.cancel(false); } } scheduledFutureMap.clear();
logger.info("*************开始扫描数据库，刷新定时任务*************");
List<TaskDef> list = new ArrayList<>();
try { list = hiveClusterSyncService.queryTaskDefs(null, null, null, null, null, "1", null) .getContent(); } catch (Exception e) { logger.info("查询数据库异常，代码执行结束，异常信息：", e); } if (ObjectUtils.isEmpty(list)) { logger.info("查询启动状态的任务记录为空，代码执行结束。"); return; } for (TaskDef taskDef : list) { String taskId = taskDef.getId(); String crontab = taskDef.getCrontab(); if (StringUtils.isBlank(crontab)) { continue; }
TaskThread taskThread = new TaskThread(taskId, crontab); boolean isValidExp = CronSequenceGenerator.isValidExpression(crontab); if (!isValidExp) { logger.error("当前cron表达式无效，taskId={},cronExpression={}", taskId, crontab); continue; } ScheduledFuture<?> scheduledFuture = threadPoolTaskScheduler.schedule(taskThread, new Trigger() {
@Override public Date nextExecutionTime(TriggerContext triggerContext) {
return new CronTrigger(crontab).nextExecutionTime(triggerContext); } });
scheduledFutureMap.put(MAPTASKKEY + taskId, scheduledFuture); } logger.info("*************刷新定时任务完成*************"); }
//添加计划 public void addTask(String taskId, String crontab) { if (!"true".equals(basicConfig.getBackupEnabled())) { return; } TaskThread taskThread = new TaskThread(taskId, crontab); ScheduledFuture<?> scheduledFuture = threadPoolTaskScheduler.schedule(taskThread, new Trigger() { @Override public Date nextExecutionTime(TriggerContext triggerContext) { return new CronTrigger(crontab).nextExecutionTime(triggerContext); } }); scheduledFutureMap.put(MAPTASKKEY + taskId, scheduledFuture); }
//取消计划 public void cancelTask(Object... taskId) { for (int i = 0; i < taskId.length; i++) { ScheduledFuture sf = scheduledFutureMap.get(MAPTASKKEY + taskId[i]); if (sf != null) { sf.cancel(false); scheduledFutureMap.remove(MAPTASKKEY + taskId[i]); } } }
//更新计划:先取消再添加 public void updateScheduleTask(String taskId, String crontab) throws ServiceException { if (!"true".equals(basicConfig.getBackupEnabled())) { return; } ScheduledFuture sf = scheduledFutureMap.get(MAPTASKKEY + taskId); if (sf != null) { sf.cancel(false); scheduledFutureMap.remove(MAPTASKKEY + taskId); } TaskThread taskThread = new TaskThread(taskId, crontab); ScheduledFuture<?> scheduledFuture = threadPoolTaskScheduler.schedule(taskThread, new Trigger() { @Override public Date nextExecutionTime(TriggerContext triggerContext) { return new CronTrigger(crontab).nextExecutionTime(triggerContext); } }); scheduledFutureMap.put(MAPTASKKEY + taskId, scheduledFuture); }
class TaskThread extends Thread {
private String taskId;
private String crontab;
public TaskThread(String taskId, String crontab) { this.taskId = taskId; this.crontab = crontab; }
public void run() { try { hiveClusterSyncService.bootTask(taskId, crontab); } catch (Exception e) { logger.info("任务(taskId={})结束初始化，异常信息：{}", taskId, e.getMessage()); } } }
}
标签：Spring,org,crontab,taskId,创建,import,定时,new,public 来源： https://www.cnblogs.com/itfeng813/p/14629006.html