humingcheng commented on code in PR #1494:
URL:
https://github.com/apache/servicecomb-service-center/pull/1494#discussion_r1865526918
##########
pkg/protect/protect.go:
##########
@@ -0,0 +1,71 @@
+package protect
+
+import (
+ "fmt"
+ "github.com/apache/servicecomb-service-center/pkg/util"
+ "net/http"
+ "time"
+
+ "github.com/apache/servicecomb-service-center/server/config"
+
+ "github.com/apache/servicecomb-service-center/pkg/log"
+)
+
+/**
+for restart service center, set a restartProtectInterval time window to return
RestartProtectHttpCode on discovery apis,
+indicating that sdk not need to clear cache
+*/
+
+var (
+ isWithinProtection bool
+ startupTimestamp int64
+ enableInstanceNullProtect bool
+ restartProtectInterval time.Duration
+ RestartProtectHttpCode int
+ validProtectCode = []int{http.StatusNotModified,
http.StatusUnprocessableEntity, http.StatusInternalServerError}
+)
+
+const (
+ maxInterval = 120 * time.Second
+ minInterval = 0 * time.Second
+ defaultRestartProtectInterval = 120 * time.Second
+)
+
+func Init() {
+ enableInstanceNullProtect =
config.GetBool("instance_null_protect.enable", false)
+ restartProtectInterval =
time.Duration(config.GetInt("instance_null_protect.restart_protect_interval",
120)) * time.Second
Review Comment:
enable为false的时候，直接退出，不用做初始化的操作了
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