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@libp2p/prometheus-metrics

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Collect libp2p metrics for scraping by Prometheus or Graphana

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import { Summary as PromSummary } from 'prom-client'; import { normalizeString } from './utils.js'; export class PrometheusSummary { summary; constructor(name, opts) { name = normalizeString(name); const help = normalizeString(opts.help ?? name); const labels = opts.label != null ? [normalizeString(opts.label)] : []; let collect; // calculated metric if (opts?.calculate != null) { collect = async function () { this.observe(await opts.calculate()); }; } this.summary = new PromSummary({ name, help, percentiles: opts.percentiles ?? [0.01, 0.05, 0.5, 0.9, 0.95, 0.99, 0.999], maxAgeSeconds: opts.maxAgeSeconds, ageBuckets: opts.ageBuckets, pruneAgedBuckets: opts.pruneAgedBuckets, compressCount: opts.compressCount ?? 1000, labelNames: labels, registers: opts.registry !== undefined ? [opts.registry] : undefined, collect }); } observe(value) { this.summary.observe(value); } reset() { this.summary.reset(); } timer() { return this.summary.startTimer(); } } //# sourceMappingURL=summary.js.map