fix RRD implementation on network troughput

backend/internal/system/handler.go

@@ -3,6 +3,7 @@ package system
 import (
 	"net/http"
 	"strconv"
+	"time"
 
 	"github.com/atlasos/calypso/internal/common/logger"
 	"github.com/atlasos/calypso/internal/tasks"
@@ -233,3 +234,22 @@ func (h *Handler) GetSystemLogs(c *gin.Context) {
 
 	c.JSON(http.StatusOK, gin.H{"logs": logs})
 }
+
+// GetNetworkThroughput retrieves network throughput data from RRD
+func (h *Handler) GetNetworkThroughput(c *gin.Context) {
+	// Default to last 5 minutes
+	durationStr := c.DefaultQuery("duration", "5m")
+	duration, err := time.ParseDuration(durationStr)
+	if err != nil {
+		duration = 5 * time.Minute
+	}
+
+	data, err := h.service.GetNetworkThroughput(c.Request.Context(), duration)
+	if err != nil {
+		h.logger.Error("Failed to get network throughput", "error", err)
+		c.JSON(http.StatusInternalServerError, gin.H{"error": "failed to get network throughput"})
+		return
+	}
+
+	c.JSON(http.StatusOK, gin.H{"data": data})
+}