weed/mount: refactor to use atomic type (#7157)

weed/mount/rdma_client.go

@@ -28,11 +28,11 @@ type RDMAMountClient struct {
 	lookupFileIdFn wdclient.LookupFileIdFunctionType
 
 	// Statistics
-	totalRequests   int64
-	successfulReads int64
-	failedReads     int64
-	totalBytesRead  int64
-	totalLatencyNs  int64
+	totalRequests   atomic.Int64
+	successfulReads atomic.Int64
+	failedReads     atomic.Int64
+	totalBytesRead  atomic.Int64
+	totalLatencyNs  atomic.Int64
 }
 
 // RDMAReadRequest represents a request to read data via RDMA
@@ -178,13 +178,13 @@ func (c *RDMAMountClient) ReadNeedle(ctx context.Context, fileID string, offset,
 		return nil, false, ctx.Err()
 	}
 
-	atomic.AddInt64(&c.totalRequests, 1)
+	c.totalRequests.Add(1)
 	startTime := time.Now()
 
 	// Lookup volume location using file ID directly
 	volumeServer, err := c.lookupVolumeLocationByFileID(ctx, fileID)
 	if err != nil {
-		atomic.AddInt64(&c.failedReads, 1)
+		c.failedReads.Add(1)
 		return nil, false, fmt.Errorf("failed to lookup volume for file %s: %w", fileID, err)
 	}
 
@@ -194,23 +194,23 @@ func (c *RDMAMountClient) ReadNeedle(ctx context.Context, fileID string, offset,
 
 	req, err := http.NewRequestWithContext(ctx, "GET", reqURL, nil)
 	if err != nil {
-		atomic.AddInt64(&c.failedReads, 1)
+		c.failedReads.Add(1)
 		return nil, false, fmt.Errorf("failed to create RDMA request: %w", err)
 	}
 
 	// Execute request
 	resp, err := c.httpClient.Do(req)
 	if err != nil {
-		atomic.AddInt64(&c.failedReads, 1)
+		c.failedReads.Add(1)
 		return nil, false, fmt.Errorf("RDMA request failed: %w", err)
 	}
 	defer resp.Body.Close()
 
 	duration := time.Since(startTime)
-	atomic.AddInt64(&c.totalLatencyNs, duration.Nanoseconds())
+	c.totalLatencyNs.Add(duration.Nanoseconds())
 
 	if resp.StatusCode != http.StatusOK {
-		atomic.AddInt64(&c.failedReads, 1)
+		c.failedReads.Add(1)
 		body, _ := io.ReadAll(resp.Body)
 		return nil, false, fmt.Errorf("RDMA read failed with status %s: %s", resp.Status, string(body))
 	}
@@ -256,12 +256,12 @@ func (c *RDMAMountClient) ReadNeedle(ctx context.Context, fileID string, offset,
 	}
 
 	if err != nil {
-		atomic.AddInt64(&c.failedReads, 1)
+		c.failedReads.Add(1)
 		return nil, false, fmt.Errorf("failed to read RDMA response: %w", err)
 	}
 
-	atomic.AddInt64(&c.successfulReads, 1)
-	atomic.AddInt64(&c.totalBytesRead, int64(len(data)))
+	c.successfulReads.Add(1)
+	c.totalBytesRead.Add(int64(len(data)))
 
 	// Log successful operation
 	glog.V(4).Infof("RDMA read completed: fileID=%s, size=%d, duration=%v, rdma=%v, contentType=%s",
@@ -308,11 +308,11 @@ func (c *RDMAMountClient) cleanupTempFile(tempFilePath string) {
 
 // GetStats returns current RDMA client statistics
 func (c *RDMAMountClient) GetStats() map[string]interface{} {
-	totalRequests := atomic.LoadInt64(&c.totalRequests)
-	successfulReads := atomic.LoadInt64(&c.successfulReads)
-	failedReads := atomic.LoadInt64(&c.failedReads)
-	totalBytesRead := atomic.LoadInt64(&c.totalBytesRead)
-	totalLatencyNs := atomic.LoadInt64(&c.totalLatencyNs)
+	totalRequests := c.totalRequests.Load()
+	successfulReads := c.successfulReads.Load()
+	failedReads := c.failedReads.Load()
+	totalBytesRead := c.totalBytesRead.Load()
+	totalLatencyNs := c.totalLatencyNs.Load()
 
 	successRate := float64(0)
 	avgLatencyNs := int64(0)