修改请求数据库方式

server/prometheus-service.js

@@ -411,50 +411,6 @@ function mergeCpuHistories(histories) {
   };
 }
 
-/**
- * Get aggregated traffic history range for preloading (past 24h, 5-min intervals)
- */
-async function getTrafficHistoryRange(url) {
-  const now = Math.floor(Date.now() / 1000);
-  const start = now - 86400; // 24h ago
-  const step = 5; // 5 seconds (17,280 points for 24h)
-
-  const queries = [
-    'sum(node_network_receive_bytes_total{device!~"lo|veth.*|docker.*|br-.*"})',
-    'sum(node_network_transmit_bytes_total{device!~"lo|veth.*|docker.*|br-.*"})',
-    'sum(rate(node_network_receive_bytes_total{device!~"lo|veth.*|docker.*|br-.*"}[5m]))',
-    'sum(rate(node_network_transmit_bytes_total{device!~"lo|veth.*|docker.*|br-.*"}[5m]))'
-  ];
-
-  const results = await Promise.all(queries.map(q =>
-    queryRange(url, q, start, now, step).catch(() => [])
-  ));
-
-  const rxBytesRes = results[0];
-  const txBytesRes = results[1];
-  const rxBWRes = results[2];
-  const txBWRes = results[3];
-
-  // Map results by timestamp
-  const dataMap = new Map();
-
-  const process = (res, field) => {
-    if (res.length > 0 && res[0].values) {
-      for (const [ts, val] of res[0].values) {
-        const entry = dataMap.get(ts) || { ts, rxBytes: 0, txBytes: 0, rxBW: 0, txBW: 0 };
-        entry[field] = parseFloat(val) || 0;
-        dataMap.set(ts, entry);
-      }
-    }
-  };
-
-  process(rxBytesRes, 'rxBytes');
-  process(txBytesRes, 'txBytes');
-  process(rxBWRes, 'rxBW');
-  process(txBWRes, 'txBW');
-
-  return Array.from(dataMap.values());
-}
 
 module.exports = {
   testConnection,
@@ -464,6 +420,5 @@ module.exports = {
   getNetworkHistory,
   mergeNetworkHistories,
   getCpuHistory,
-  mergeCpuHistories,
-  getTrafficHistoryRange
+  mergeCpuHistories
 };