feat: 添加分布式锁以防止多个任务同时执行

src/framework/cron/cron.go

@@ -1,6 +1,7 @@
 package cron
 
 import (
+	"errors"
 	"fmt"
 	"time"
 
@@ -194,6 +195,9 @@ func (qj QueueJob) Run() {
 	// 获取队列处理器接口实现
 	processor := *job.queueProcessor
 	result, err := processor.Execute(job.Data)
+	if errors.Is(err, ErrTaskRunning) {
+		return
+	}
 	if err != nil {
 		job.Status = Failed
 		cronLog.Error(err, "failed", job)

src/framework/cron/cron_log.go

@@ -2,6 +2,7 @@ package cron
 
 import (
 	"encoding/json"
+	"errors"
 	"time"
 
 	"be.ems/src/framework/constants"
@@ -123,3 +124,6 @@ type JobData struct {
 	// 定时任务调度表记录信息
 	SysJob monitorModel.SysJob
 }
+
+// ErrTaskRunning 任务正在运行错误
+var ErrTaskRunning = errors.New("task is running")