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'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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