修复延迟显示错误的BUG

server/latency-service.js

@@ -55,44 +55,53 @@ async function pollLatency() {
                 const targetMetrics = [
                     'probe_icmp_duration_seconds', 
                     'probe_http_duration_seconds', 
-                    'probe_dns_lookup_time_seconds',
                     'probe_duration_seconds'
                 ];
 
                 let foundLatency = null;
-                const encodedTarget = target.toLowerCase();
-
                 for (const metricName of targetMetrics) {
-                    for (const line of lines) {
+                    let bestLine = null;
-                        if (!line.startsWith(metricName)) continue;
                     
-                        // Precise matching for the specific target if multiple targets exist in data
+                    // First pass: look for phase="rtt" which is the most accurate "ping"
-                        // Handles: metric{instance="target"} value OR metric value
+                    for (const line of lines) {
+                        if (line.startsWith(metricName) && line.includes('phase="rtt"')) {
+                            bestLine = line;
+                            break;
+                        }
+                    }
+                    
+                    // Second pass: if no rtt phase, look for a line without phases (legacy format) or just the first line
+                    if (!bestLine) {
+                        for (const line of lines) {
+                            if (line.startsWith(metricName)) {
+                                // Prefer lines without {} if possible, otherwise take the first one
+                                if (!line.includes('{')) {
+                                    bestLine = line;
+                                    break;
+                                }
+                                if (!bestLine) bestLine = line;
+                            }
+                        }
+                    }
+
+                    if (bestLine) {
+                        // Regex to capture the number, including scientific notation
                         const regex = new RegExp(`^${metricName}(?:\\{[^}]*\\})?\\s+([\\d.eE+-]+)`);
-                        const match = line.match(regex);
+                        const match = bestLine.match(regex);
                         
                         if (match) {
-                            // If there are labels, verify they relate to our target (if target label exists)
-                            if (line.includes('{')) {
-                                const labelsPart = line.substring(line.indexOf('{') + 1, line.lastIndexOf('}')).toLowerCase();
-                                // Only check if the labels contain our target to be safe, 
-                                // though /probe usually only returns one target anyway.
-                                if (labelsPart.includes(encodedTarget) || labelsPart.includes('instance') || labelsPart.includes('target')) {
                             const val = parseFloat(match[1]);
-                                    if (!isNaN(val)) foundLatency = val * 1000;
+                            if (!isNaN(val)) {
-                                }
+                                foundLatency = val * 1000; // convert to ms
-                            } else {
+                                break; 
-                                const val = parseFloat(match[1]);
-                                if (!isNaN(val)) foundLatency = val * 1000;
                             }
                         }
-                        if (foundLatency !== null) break;
                     }
-                    if (foundLatency !== null) break;
                 }
 
                 // 3. Final decision
                 // If it's a success, use found latency. If success=0 or missing, handle carefully.
+                let latency;
                 if (isProbeSuccess && foundLatency !== null) {
                     latency = foundLatency;
                 } else {

server/prometheus-service.js

@@ -809,12 +809,14 @@ module.exports = {
       // Construct a single optimized query searching for priority metrics and common labels
       // Prioritize probe_icmp_duration_seconds OVER probe_duration_seconds
       const queryExpr = `(
+        probe_icmp_duration_seconds{phase="rtt", instance="${target}"} or 
+        probe_icmp_duration_seconds{phase="rtt", target="${target}"} or 
+        probe_http_duration_seconds{phase="rtt", instance="${target}"} or 
+        probe_http_duration_seconds{phase="rtt", target="${target}"} or 
         probe_icmp_duration_seconds{instance="${target}"} or 
         probe_icmp_duration_seconds{target="${target}"} or 
-        probe_icmp_duration_seconds{instance_name="${target}"} or 
         probe_duration_seconds{instance="${target}"} or 
-        probe_duration_seconds{target="${target}"} or 
+        probe_duration_seconds{target="${target}"}
-        probe_duration_seconds{instance_name="${target}"}
       )`;
       
       const params = new URLSearchParams({ query: queryExpr });