bug fix: fix concurrent map write error

backend/utils/chan.go

@@ -1,29 +1,35 @@
 package utils
 
+import (
+	"fmt"
+	"sync"
+)
+
 var TaskExecChanMap = NewChanMap()
 
 type ChanMap struct {
-	m map[string]chan string
+	m sync.Map
 }
 
 func NewChanMap() *ChanMap {
-	return &ChanMap{m: make(map[string]chan string)}
+	return &ChanMap{m: sync.Map{}}
 }
 
 func (cm *ChanMap) Chan(key string) chan string {
-	if ch, ok := cm.m[key]; ok {
-		return ch
+	if ch, ok := cm.m.Load(key); ok {
+		return ch.(interface{}).(chan string)
 	}
 	ch := make(chan string, 10)
-	cm.m[key] = ch
+	cm.m.Store(key, ch)
 	return ch
 }
 
 func (cm *ChanMap) ChanBlocked(key string) chan string {
-	if ch, ok := cm.m[key]; ok {
-		return ch
+	if ch, ok := cm.m.Load(key); ok {
+		return ch.(interface{}).(chan string)
 	}
+	fmt.Println("@@####@@@@#@####$@@#")
 	ch := make(chan string)
-	cm.m[key] = ch
+	cm.m.Store(key, ch)
 	return ch
 }