name : eventLoopMetrics.js 'use strict'; Object.defineProperty(exports, "__esModule", { value: true }); exports.EventLoopMetricOption = void 0; const metrics_1 = require("../services/metrics"); const serviceManager_1 = require("../serviceManager"); const Debug = require("debug"); const histogram_1 = require("../utils/metrics/histogram"); class EventLoopMetricOption { } exports.EventLoopMetricOption = EventLoopMetricOption; const defaultOptions = { eventLoopActive: true, eventLoopDelay: true }; class EventLoopHandlesRequestsMetric { constructor() { this.logger = Debug('axm:features:metrics:eventloop'); this.delayLoopInterval = 1000; } init(config) { if (config === false) return; if (config === undefined) { config = defaultOptions; } if (config === true) { config = defaultOptions; } this.metricService = serviceManager_1.ServiceManager.get('metrics'); if (this.metricService === undefined) return this.logger('Failed to load metric service'); this.logger('init'); if (typeof process._getActiveRequests === 'function' && config.eventLoopActive === true) { const requestMetric = this.metricService.metric({ name: 'Active requests', id: 'internal/libuv/requests', historic: true }); this.requestTimer = setInterval(_ => { requestMetric.set(process._getActiveRequests().length); }, 1000); this.requestTimer.unref(); } if (typeof process._getActiveHandles === 'function' && config.eventLoopActive === true) { const handleMetric = this.metricService.metric({ name: 'Active handles', id: 'internal/libuv/handles', historic: true }); this.handleTimer = setInterval(_ => { handleMetric.set(process._getActiveHandles().length); }, 1000); this.handleTimer.unref(); } if (config.eventLoopDelay === false) return; const histogram = new histogram_1.default(); const uvLatencyp50 = { name: 'Event Loop Latency', id: 'internal/libuv/latency/p50', type: metrics_1.MetricType.histogram, historic: true, implementation: histogram, handler: function () { const percentiles = this.implementation.percentiles([0.5]); if (percentiles[0.5] === null) return null; return percentiles[0.5].toFixed(2); }, unit: 'ms' }; const uvLatencyp95 = { name: 'Event Loop Latency p95', id: 'internal/libuv/latency/p95', type: metrics_1.MetricType.histogram, historic: true, implementation: histogram, handler: function () { const percentiles = this.implementation.percentiles([0.95]); if (percentiles[0.95] === null) return null; return percentiles[0.95].toFixed(2); }, unit: 'ms' }; this.metricService.registerMetric(uvLatencyp50); this.metricService.registerMetric(uvLatencyp95); this.runtimeStatsService = serviceManager_1.ServiceManager.get('runtimeStats'); if (this.runtimeStatsService === undefined) { this.logger('runtimeStats module not found, fallbacking into pure js method'); let oldTime = process.hrtime(); this.delayTimer = setInterval(() => { const newTime = process.hrtime(); const delay = (newTime[0] - oldTime[0]) * 1e3 + (newTime[1] - oldTime[1]) / 1e6 - this.delayLoopInterval; oldTime = newTime; histogram.update(delay); }, this.delayLoopInterval); this.delayTimer.unref(); } else { this.logger('using runtimeStats module as data source for event loop latency'); this.handle = (stats) => { if (typeof stats !== 'object' || !Array.isArray(stats.ticks)) return; stats.ticks.forEach((tick) => { histogram.update(tick); }); }; this.runtimeStatsService.on('data', this.handle); } } destroy() { if (this.requestTimer !== undefined) { clearInterval(this.requestTimer); } if (this.handleTimer !== undefined) { clearInterval(this.handleTimer); } if (this.delayTimer !== undefined) { clearInterval(this.delayTimer); } if (this.runtimeStatsService !== undefined) { this.runtimeStatsService.removeListener('data', this.handle); } this.logger('destroy'); } } exports.default = EventLoopHandlesRequestsMetric; //# 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FJLENBQUMsWUFBWSxLQUFLLFNBQVMsRUFBRSxDQUFDO1lBQ3BDLGFBQWEsQ0FBQyxJQUFJLENBQUMsWUFBWSxDQUFDLENBQUE7UUFDbEMsQ0FBQztRQUNELElBQUksSUFBSSxDQUFDLFdBQVcsS0FBSyxTQUFTLEVBQUUsQ0FBQztZQUNuQyxhQUFhLENBQUMsSUFBSSxDQUFDLFdBQVcsQ0FBQyxDQUFBO1FBQ2pDLENBQUM7UUFDRCxJQUFJLElBQUksQ0FBQyxVQUFVLEtBQUssU0FBUyxFQUFFLENBQUM7WUFDbEMsYUFBYSxDQUFDLElBQUksQ0FBQyxVQUFVLENBQUMsQ0FBQTtRQUNoQyxDQUFDO1FBQ0QsSUFBSSxJQUFJLENBQUMsbUJBQW1CLEtBQUssU0FBUyxFQUFFLENBQUM7WUFDM0MsSUFBSSxDQUFDLG1CQUFtQixDQUFDLGNBQWMsQ0FBQyxNQUFNLEVBQUUsSUFBSSxDQUFDLE1BQU0sQ0FBQyxDQUFBO1FBQzlELENBQUM7UUFDRCxJQUFJLENBQUMsTUFBTSxDQUFDLFNBQVMsQ0FBQyxDQUFBO0lBQ3hCLENBQUM7Q0FDRjtBQXhIRCxpREF3SEMifQ==