Oxidaner commented on code in PR #3235:
URL: https://github.com/apache/dubbo-go/pull/3235#discussion_r2903446648
##########
filter/graceful_shutdown/consumer_filter.go:
##########
@@ -91,3 +112,89 @@ func (f *consumerGracefulShutdownFilter) Set(name string,
conf any) {
// do nothing
}
}
+
+// isClosingInvoker checks if invoker is in closing list
+func (f *consumerGracefulShutdownFilter) isClosingInvoker(invoker
base.Invoker) bool {
+ key := invoker.GetURL().String()
+ if expireTime, ok := f.closingInvokers.Load(key); ok {
+ if time.Now().Before(expireTime.(time.Time)) {
+ return true
+ }
+ f.closingInvokers.Delete(key)
+ }
+ return false
+}
+
+// isClosingResponse checks if response contains closing flag
+func (f *consumerGracefulShutdownFilter) isClosingResponse(result
result.Result) bool {
+ if result != nil && result.Attachments() != nil {
+ if v, ok :=
result.Attachments()[constant.GracefulShutdownClosingKey]; ok {
+ if v == "true" {
+ return true
+ }
+ }
+ }
+ return false
+}
+
+// markClosingInvoker marks invoker as closing and sets available=false
+func (f *consumerGracefulShutdownFilter) markClosingInvoker(invoker
base.Invoker) {
+ key := invoker.GetURL().String()
+ expireTime := time.Now().Add(f.getClosingInvokerExpireTime())
+ f.closingInvokers.Store(key, expireTime)
+
+ logger.Infof("Graceful shutdown: marked invoker as closing: %s, will
expire at %v, IsAvailable=%v",
+ key, expireTime, invoker.IsAvailable())
+
+ if bi, ok := invoker.(*base.BaseInvoker); ok {
+ bi.SetAvailable(false)
+ logger.Infof("Graceful shutdown: set invoker unavailable: %s,
IsAvailable now=%v",
+ key, invoker.IsAvailable())
+ }
+}
+
+func (f *consumerGracefulShutdownFilter) getClosingInvokerExpireTime()
time.Duration {
+ if f.shutdownConfig != nil && f.shutdownConfig.ClosingInvokerExpireTime
!= "" {
+ if duration, err :=
time.ParseDuration(f.shutdownConfig.ClosingInvokerExpireTime); err == nil &&
duration > 0 {
+ return duration
+ }
+ }
+ // default 30s, also try parsing numeric string as milliseconds
+ if f.shutdownConfig != nil && f.shutdownConfig.ClosingInvokerExpireTime
!= "" {
+ if ms, err :=
strconv.ParseInt(f.shutdownConfig.ClosingInvokerExpireTime, 10, 64); err == nil
&& ms > 0 {
+ return time.Duration(ms) * time.Millisecond
+ }
+ }
+ return 30 * time.Second
+}
+
+// handleRequestError handles request errors and marks invoker as unavailable
for connection errors
+func (f *consumerGracefulShutdownFilter) handleRequestError(invoker
base.Invoker, err error) {
+ if err == nil {
+ return
+ }
+
+ // check for connection-related errors
+ errMsg := err.Error()
+ isConnectionError := strings.Contains(errMsg, "client has closed") ||
+ strings.Contains(errMsg, "connection") ||
Review Comment:
Sorry, I'll correct it
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