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调整,新增动态线程池大小,动态线程分配条数划分和线程池重建功能

master
面包骑士 2024-09-08 10:02:46 +08:00
parent 8d1b33f903
commit 7be9bda298
2 changed files with 30 additions and 5 deletions
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10
muyu-quest-server/src/main/java/com/muyu/quest/manager/TaskManager.java
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@ -23,7 +23,7 @@ import java.util.List;
public final class TaskManager {
// 线程池中默认线程的个数为5
private static int workerNum = 8;
private static int workerNum = 5;
// 工作线程
private final WorkThread[] workThrads;
// 未处理的任务
@ -113,6 +113,14 @@ public final class TaskManager {
return taskQueue.size();
}
/**
* 返回线程池当前状态
* @return 如果还在工作返回false，否则返回true
*/
public Boolean getIsRunning() {
return taskQueue.isEmpty() || (taskManager.getWaitTasknumber() == 0 && taskManager.getWorkThreadNumber() == 0);
}
// 覆盖toString方法，返回线程池信息：工作线程个数和已完成任务个数
@Override
public String toString() {

25
muyu-quest-server/src/main/java/com/muyu/quest/service/impl/TaskServiceImpl.java
View File

@ -50,7 +50,7 @@ public class TaskServiceImpl extends ServiceImpl<TaskMapper, Task>
@Resource
private ITaskExportService taskExportService;
private final static TaskManager taskManager = TaskManager.getTaskManager();
private static TaskManager taskManager = null;
/**
* 查询任务
@ -154,17 +154,34 @@ public class TaskServiceImpl extends ServiceImpl<TaskMapper, Task>
String findSql = getFindSql(nodeMap);
// 获取查询条数
int count = getFindCount(findSql, nodeMap);
// 划分线程 每次查询100000条
int pageSize = 100000;
// 划分线程 每次根据条数分配线程每次查询条数
// 1000W 5/100000 100W 8/10000 10W 8/1000
int pageSize = count / 100;
int taskNum = 8;
if (count > 100000000){
pageSize = 100000;
taskNum = 5;
}else if (count > 10000000){
pageSize = 10000;
}else if (count < 100000){
pageSize = 1000;
}
int threadNum = count / pageSize + 1;
log.info("任务 {} 总共需要 {} 条数据, 划分为线程{}条",taskCode,count,threadNum);
if (taskManager == null){
taskManager = TaskManager.getTaskManager(taskNum);
}else if (taskManager.getIsRunning()){
taskManager.destroy();
taskManager = TaskManager.getTaskManager(taskNum);
}
for (int i = 0; i < threadNum; i++) {
int index = i+1;
int limitNum = pageSize;
// 添加进入任务队列
taskManager.execute(() -> {
String exportCode = UUID.randomUUID().toString().replace("-","");
// 获取新SQL 并执行
String sql = findSql + " LIMIT "+pageSize+" OFFSET "+(index-1)*pageSize;
String sql = findSql + " LIMIT "+limitNum+" OFFSET "+(index-1)*limitNum;
String addSql = getAddSql(nodeMap, sql);
int addSqlMaxLength = Math.min(addSql.length(), 30000);
TaskExport entity = new TaskExport(taskCode,exportCode, addSql.substring(0,addSqlMaxLength), 0, "");