feat(traffic): показать поток NetFlow на карте сети

Скорость между узлами считается как в Трафике (5 мин, без overlay/mesh), отдельно от ёмкости WAN и BT.

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

lib/map-netflow-hops.ts

@@ -0,0 +1,103 @@
+import type { FlowMapHop } from "@mmapp/contracts/traffic-flow"
+import { fmtRate } from "@/lib/fmt-rate"
+
+export interface MatchedNetflowHop {
+  bps: number
+  bpsFwd: number
+  bpsRev: number
+  bytes: number
+}
+
+function ifaceNorm(s: string | undefined): string {
+  return (s ?? "").trim().toLowerCase()
+}
+
+function pairKey(a: string, b: string): string {
+  const x = String(a)
+  const y = String(b)
+  return x <= y ? `${x}\t${y}` : `${y}\t${x}`
+}
+
+function mergeDirected(hops: FlowMapHop[], mapFromId: string): MatchedNetflowHop {
+  let bytes = 0
+  let bpsFwd = 0
+  let bpsRev = 0
+  const from = String(mapFromId)
+  for (const h of hops) {
+    bytes += h.bytes
+    if (h.fromId === from) {
+      bpsFwd += h.bpsFwd
+      bpsRev += h.bpsRev
+    } else {
+      bpsFwd += h.bpsRev
+      bpsRev += h.bpsFwd
+    }
+  }
+  return { bytes, bpsFwd, bpsRev, bps: bpsFwd + bpsRev }
+}
+
+export function hopHasRate(h: MatchedNetflowHop | undefined): h is MatchedNetflowHop {
+  return h != null && Number.isFinite(h.bps) && h.bps > 0
+}
+
+export function formatNetflowRate(hop: MatchedNetflowHop): string {
+  return fmtRate(hop.bps / 1_000_000)
+}
+
+export function formatNetflowDir(hop: MatchedNetflowHop): string {
+  return `↓${fmtRate(hop.bpsFwd / 1_000_000)} ↑${fmtRate(hop.bpsRev / 1_000_000)}`
+}
+
+/** GRE: сначала имя интерфейса туннеля на любом конце, иначе пара узлов. */
+export function matchNetflowForGreEdge(
+  edge: {
+    tunnel: { name: string }
+    fromServer: { id: string }
+    toServer: { id: string }
+  },
+  hops: FlowMapHop[],
+): MatchedNetflowHop | undefined {
+  const name = ifaceNorm(edge.tunnel.name)
+  const fromId = String(edge.fromServer.id)
+  const toId = String(edge.toServer.id)
+  if (name) {
+    const ifaceHits = hops.filter((h) =>
+      h.kind === "iface"
+      && ifaceNorm(h.iface) === name
+      && (h.fromId === fromId || h.fromId === toId),
+    )
+    if (ifaceHits.length) return mergeDirected(ifaceHits, fromId)
+    const greNamed = hops.filter((h) =>
+      h.kind === "gre"
+      && ifaceNorm(h.iface) === name
+      && (h.fromId === fromId || h.fromId === toId || h.toId === fromId || h.toId === toId),
+    )
+    if (greNamed.length) return mergeDirected(greNamed, fromId)
+  }
+  const want = pairKey(fromId, toId)
+  const pairHits = hops.filter((h) =>
+    h.kind === "gre" && Boolean(h.toId) && pairKey(h.fromId, h.toId) === want,
+  )
+  if (pairHits.length) return mergeDirected(pairHits, fromId)
+  return undefined
+}
+
+/** WAN-аплинк HR: kind wan, иначе iface с тем же именем на homeId. */
+export function matchNetflowForWan(
+  homeId: string,
+  wanIface: string,
+  hops: FlowMapHop[],
+): MatchedNetflowHop | undefined {
+  const id = String(homeId)
+  const iface = ifaceNorm(wanIface)
+  if (!iface) return undefined
+  const wanHits = hops.filter((h) =>
+    h.kind === "wan" && h.fromId === id && ifaceNorm(h.iface) === iface,
+  )
+  if (wanHits.length) return mergeDirected(wanHits, id)
+  const ifaceHits = hops.filter((h) =>
+    h.kind === "iface" && h.fromId === id && ifaceNorm(h.iface) === iface,
+  )
+  if (ifaceHits.length) return mergeDirected(ifaceHits, id)
+  return undefined
+}