add time task server

src/timed_task/open_im_timed_task.go

@@ -0,0 +1,42 @@
+package main
+
+import (
+	"Open_IM/src/common/config"
+	"Open_IM/src/common/db"
+	"fmt"
+	"time"
+)
+
+func main() {
+	for {
+		fmt.Println("start delete mongodb expired record")
+		timeUnixBegin := time.Now().Unix()
+		count, _ := db.DB.MgoUserCount()
+		fmt.Println("mongodb record count: ", count)
+		for i := 0; i < count; i++ {
+			time.Sleep(1 * time.Millisecond)
+			uid, _ := db.DB.MgoSkipUID(i)
+			fmt.Println("operate uid: ", uid)
+			err := db.DB.DelUserChat(uid)
+			if err != nil {
+				fmt.Println("operate uid failed: ", uid, err.Error())
+			}
+		}
+
+		timeUnixEnd := time.Now().Unix()
+		costTime := timeUnixEnd - timeUnixBegin
+		if costTime > int64(config.Config.Mongo.DBRetainChatRecords*24*3600) {
+			continue
+		} else {
+			sleepTime := 0
+			if int64(config.Config.Mongo.DBRetainChatRecords*24*3600)-costTime > 24*3600 {
+				sleepTime = 24 * 3600
+			} else {
+				sleepTime = config.Config.Mongo.DBRetainChatRecords*24*3600 - int(costTime)
+			}
+			fmt.Println("sleep: ", sleepTime)
+			time.Sleep(time.Duration(sleepTime) * time.Second)
+		}
+	}
+
+}