优化显示

server/prometheus-service.js

@@ -42,18 +42,18 @@ async function testConnection(url) {
     // Using native fetch to avoid follow-redirects/axios "protocol mismatch" issues in some Node environments
     const controller = new AbortController();
     const timer = setTimeout(() => controller.abort(), QUERY_TIMEOUT);
-    
+
     // Node native fetch - handles http/https automatically
     const res = await fetch(`${normalized}/api/v1/status/buildinfo`, {
       signal: controller.signal
     });
-    
+
     clearTimeout(timer);
 
     if (!res.ok) {
       throw new Error(`Prometheus returned HTTP ${res.status}`);
     }
-    
+
     const data = await res.json();
     return data?.data?.version || 'unknown';
   } catch (err) {
@@ -74,17 +74,17 @@ async function query(baseUrl, expr) {
     const params = new URLSearchParams({ query: expr });
     const controller = new AbortController();
     const timer = setTimeout(() => controller.abort(), QUERY_TIMEOUT);
-    
+
     const res = await fetch(`${url}/api/v1/query?${params.toString()}`, {
       signal: controller.signal
     });
-    
+
     clearTimeout(timer);
 
     if (!res.ok) {
       throw new Error(`Prometheus returned HTTP ${res.status}`);
     }
-    
+
     const data = await res.json();
     if (data.status !== 'success') {
       throw new Error(`Prometheus query failed: ${data.error || 'unknown error'}`);
@@ -107,17 +107,17 @@ async function queryRange(baseUrl, expr, start, end, step) {
     const params = new URLSearchParams({ query: expr, start, end, step });
     const controller = new AbortController();
     const timer = setTimeout(() => controller.abort(), QUERY_TIMEOUT);
-    
+
     const res = await fetch(`${url}/api/v1/query_range?${params.toString()}`, {
       signal: controller.signal
     });
-    
+
     clearTimeout(timer);
 
     if (!res.ok) {
       throw new Error(`Prometheus returned HTTP ${res.status}`);
     }
-    
+
     const data = await res.json();
     if (data.status !== 'success') {
       throw new Error(`Prometheus range query failed: ${data.error || 'unknown error'}`);
@@ -180,6 +180,7 @@ async function getOverviewMetrics(url, sourceName) {
 
   const getOrCreate = (metric) => {
     const key = metric.instance;
+
     if (!instances.has(key)) {
       instances.set(key, {
         instance: key,