85 lines
3.1 KiB
TypeScript
85 lines
3.1 KiB
TypeScript
import type { PingProbe, Server } from "@/lib/data"
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/** Длина ряда на графике дашборда (ось времени). */
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export const DASH_LATENCY_POINTS = 60
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/** Растягивает/сэмплирует ряд до `targetLen` (линейная интерполяция по индексам). */
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export function padSeriesToLength(values: number[], targetLen: number): number[] {
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if (targetLen <= 0) return []
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if (values.length === 0) return Array(targetLen).fill(0)
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if (values.length === targetLen) return [...values]
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if (values.length > targetLen) return values.slice(values.length - targetLen)
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if (values.length === 1) return Array(targetLen).fill(values[0] ?? 0)
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const out: number[] = []
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for (let i = 0; i < targetLen; i++) {
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const t = (i / (targetLen - 1)) * (values.length - 1)
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const j = Math.floor(t)
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const f = t - j
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const a = values[j] ?? 0
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const b = values[Math.min(j + 1, values.length - 1)] ?? a
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out.push(Math.round(a + f * (b - a)))
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}
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return out
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}
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export interface DashboardLatencyChartInput {
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series: Record<string, number[]>
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labels: Record<string, string>
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}
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/**
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* Средний RTT по всем включённым пробам с одного источника (srcServerId).
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* Ключ серии — стабильный id вида `src-<numericId>`; подпись — площадка или имя сервера.
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* Ограничение числа линий — чтобы график оставался читаемым.
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*/
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export function buildLatencySeriesByProbeSource(
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probes: PingProbe[],
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servers: Server[],
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opts?: { maxServers?: number; points?: number },
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): DashboardLatencyChartInput {
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const maxServers = opts?.maxServers ?? 8
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const points = opts?.points ?? DASH_LATENCY_POINTS
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const bySrv = new Map<string, PingProbe[]>()
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for (const p of probes) {
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if (!p.enabled || !p.series?.length) continue
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const sid = p.srcServerId
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if (!bySrv.has(sid)) bySrv.set(sid, [])
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bySrv.get(sid)!.push(p)
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}
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const sortedIds = [...bySrv.keys()].sort((a, b) => {
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const na = servers.find((s) => s.id === a)?.name ?? a
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const nb = servers.find((s) => s.id === b)?.name ?? b
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return na.localeCompare(nb, "ru")
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}).slice(0, maxServers)
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const series: Record<string, number[]> = {}
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const labels: Record<string, string> = {}
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for (const sid of sortedIds) {
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const plist = bySrv.get(sid)!
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const innerLen = plist.reduce((m, p) => Math.max(m, p.series.length), 0)
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if (innerLen === 0) continue
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const averaged = Array.from({ length: innerLen }, (_, i) => {
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const vals = plist
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.map((p) => p.series[i])
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.filter((v): v is number => typeof v === "number" && Number.isFinite(v))
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if (!vals.length) return 0
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return Math.round(vals.reduce((x, y) => x + y, 0) / vals.length)
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})
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const key = `src-${sid}`
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series[key] = padSeriesToLength(averaged, points)
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const srv = servers.find((s) => s.id === sid)
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const site = srv?.site?.trim()
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labels[key] =
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site && site !== "—"
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? site.slice(0, 16)
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: (srv?.name ?? `#${sid}`).slice(0, 16)
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}
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return { series, labels }
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}
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