feat(tasks): if the task fails, recalculate the priority

aspnet-core/modules/task-management/LINGYUN.Abp.BackgroundTasks.Abstractions/LINGYUN/Abp/BackgroundTasks/JobInfo.cs

@@ -62,7 +62,7 @@ public class JobInfo
     /// </summary>
     public JobType JobType { get; set; } = JobType.Once;
     /// <summary>
-    /// Cron表达式，如果是持续任务需要指定
+    /// Cron表达式，如果是周期性任务需要指定
     /// </summary>
     public string Cron { get; set; }
     /// <summary>

aspnet-core/modules/task-management/LINGYUN.Abp.BackgroundTasks.Quartz/README.md

@@ -1,6 +1,6 @@
 # LINGYUN.Abp.BackgroundTasks.Quartz
 
-后台任务（队列）模块的Quartz实现, 使用任务适配器来做到任务的幂等性控制.  
+后台任务（队列）模块的Quartz实现.  
 并添加一个监听器用于通知管理者任务状态  
 
 ## 配置使用

aspnet-core/modules/task-management/LINGYUN.Abp.BackgroundTasks/LINGYUN/Abp/BackgroundTasks/Internal/JobExecutedEvent.cs

@@ -28,9 +28,21 @@ internal class JobExecutedEvent : JobEventBase<JobExecutedEvent>, ITransientDepe
             if (context.EventData.Exception != null)
             {
                 job.TryCount += 1;
+                // 将任务标记为运行中, 会被轮询重新进入队列
                 job.Status = JobStatus.Running;
                 job.Result = context.EventData.Exception.Message;
-                
+
+                // 多次异常后需要重新计算优先级
+                if (job.TryCount <= (job.MaxTryCount / 2) &&
+                    job.TryCount > (job.MaxTryCount / 3))
+                {
+                    job.Priority = JobPriority.BelowNormal;
+                }
+                else if (job.TryCount > (job.MaxTryCount / 1.5))
+                {
+                    job.Priority = JobPriority.Low;
+                }
+
                 if (job.TryCount > job.MaxTryCount)
                 {
                     job.Status = JobStatus.Stopped;

aspnet-core/modules/task-management/LINGYUN.Abp.BackgroundTasks/README.md

@@ -50,6 +50,8 @@ public class DemoClass
             Cron = "0/5 * * * * ? ",
             TryCount = 10,
             Status = JobStatus.Running,
+            // 定义此字段处理并发
+            LockTimeOut = 120,
         });
 
         // 将一次性任务添加到队列, 将在10（Interval）秒后被执行