feat(traffic): показать аналитику IPFIX по серверам и интерфейсам

Резолвить ifIndex в имена RouterOS, дать вкладке Потоки ту же оболочку сервер/клиент/iface, что у обычного трафика, и обновлять срезы live без перезагрузки.

Co-authored-by: Cursor <[email protected]>

backend/src/services/traffic-flow-analytics.test.ts

@@ -0,0 +1,68 @@
+import assert from "node:assert/strict"
+import { rememberServerIfaces, resetIfaceCacheForTests } from "./traffic-flow-ifindex.js"
+import {
+  ingestParsedFlowsForServerForTests,
+  resetFlowRingsForTests,
+} from "./traffic-flow-ingest.js"
+import { buildFlowAnalytics } from "./traffic-flow-analytics.js"
+
+resetIfaceCacheForTests()
+resetFlowRingsForTests()
+rememberServerIfaces(7, [
+  { ".id": "*2", name: "ether1" },
+  { ".id": "*A", name: "wg-flow" },
+])
+
+ingestParsedFlowsForServerForTests(7, [
+  {
+    src: "10.1.1.8",
+    dst: "8.8.8.8",
+    proto: 6,
+    srcPort: 51234,
+    dstPort: 443,
+    bytes: 12_000,
+    packets: 10,
+    inIface: "2",
+    outIface: "10",
+  },
+  {
+    src: "10.1.1.8",
+    dst: "1.1.1.1",
+    proto: 17,
+    srcPort: 53000,
+    dstPort: 53,
+    bytes: 800,
+    packets: 4,
+    inIface: "2",
+    outIface: "",
+  },
+])
+
+try {
+  const all = buildFlowAnalytics({ minutes: 5, serverId: 7 })
+  assert.equal(all.applications[0]?.label, "HTTPS")
+  assert.ok(all.protocols.some((p) => p.label === "TCP"))
+  assert.equal(all.ifaces[0]?.name, "ether1")
+  assert.notEqual(all.ifaces[0]?.name, "2")
+  const conv = all.conversationsList[0]
+  assert.ok(conv)
+  assert.equal(conv.inIface, "ether1")
+  assert.equal(conv.inIfaceIndex, "2")
+  assert.equal(conv.application, "HTTPS")
+  assert.ok(!/^\d+$/.test(conv.inIface))
+
+  const filtered = buildFlowAnalytics({ minutes: 5, serverId: 7, iface: "ether1" })
+  assert.ok(filtered.bytes >= 12_000)
+  assert.equal(filtered.ifaces[0]?.name, "ether1")
+
+  const miss = buildFlowAnalytics({ minutes: 5, serverId: 7, iface: "wg-flow" })
+  assert.equal(miss.conversations, 0)
+
+  const other = buildFlowAnalytics({ minutes: 5, serverId: 99 })
+  assert.equal(other.conversations, 0)
+} finally {
+  resetFlowRingsForTests()
+  resetIfaceCacheForTests()
+}
+
+console.log("traffic-flow-analytics.test.ts: ok")