[volume] refactor and add metrics for flight upload and download data limit condition (#6920)

* refactor concurrentDownloadLimit

* fix loop

* fix cmdServer

* fix: resolve conversation pr 6920

* Changes logging function (#6919)

* updated logging methods for stores

* updated logging methods for stores

* updated logging methods for filer

* updated logging methods for uploader and http_util

* updated logging methods for weed server

---------

Co-authored-by: akosov <a.kosov@kryptonite.ru>

* Improve lock ring (#6921)

* fix flaky lock ring test

* add more tests

* fix: build

* fix: rm import util/version

* fix: serverOptions

* refactoring

---------

Co-authored-by: Aleksey Kosov <rusyak777@list.ru>
Co-authored-by: akosov <a.kosov@kryptonite.ru>
Co-authored-by: Chris Lu <chrislusf@users.noreply.github.com>
Co-authored-by: chrislu <chris.lu@gmail.com>

weed/util/cond_wait.go

@@ -0,0 +1,32 @@
+package util
+
+import (
+	"context"
+	"net/http"
+	"sync"
+	"time"
+)
+
+const HttpStatusCancelled = 499
+
+func WaitWithTimeout(ctx context.Context, cond *sync.Cond, timer *time.Timer) int {
+	waitDone := make(chan struct{})
+
+	go func() {
+		cond.L.Lock()
+		defer cond.L.Unlock()
+		cond.Wait()
+		defer close(waitDone)
+	}()
+
+	select {
+	case <-waitDone:
+		return http.StatusOK
+	case <-timer.C:
+		cond.Broadcast()
+		return http.StatusTooManyRequests
+	case <-ctx.Done():
+		cond.Broadcast()
+		return HttpStatusCancelled
+	}
+}

weed/util/version/constants.go

@@ -6,8 +6,6 @@ import (
 	"github.com/seaweedfs/seaweedfs/weed/util"
 )
 
-const HttpStatusCancelled = 499
-
 var (
 	MAJOR_VERSION  = int32(3)
 	MINOR_VERSION  = int32(92)