178 lines
14 KiB
JavaScript
178 lines
14 KiB
JavaScript
'use strict';
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Object.defineProperty(exports, "__esModule", { value: true });
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const shimmer = require("shimmer");
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const debug_1 = require("debug");
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const configuration_1 = require("../configuration");
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const serviceManager_1 = require("../serviceManager");
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const histogram_1 = require("../utils/metrics/histogram");
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const requireMiddle = require("require-in-the-middle");
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const metrics_1 = require("../services/metrics");
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class HttpMetricsConfig {
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}
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exports.HttpMetricsConfig = HttpMetricsConfig;
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class HttpMetrics {
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constructor() {
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this.defaultConf = {
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http: true
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};
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this.metrics = new Map();
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this.logger = debug_1.default('axm:features:metrics:http');
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this.modules = {};
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}
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init(config) {
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if (config === false)
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return;
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if (config === undefined) {
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config = this.defaultConf;
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}
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if (typeof config !== 'object') {
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config = this.defaultConf;
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}
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this.logger('init');
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configuration_1.default.configureModule({
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latency: true
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});
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this.metricService = serviceManager_1.ServiceManager.get('metrics');
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if (this.metricService === undefined)
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return this.logger(`Failed to load metric service`);
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this.logger('hooking to require');
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this.hookRequire();
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}
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registerHttpMetric() {
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if (this.metricService === undefined)
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return this.logger(`Failed to load metric service`);
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const histogram = new histogram_1.default();
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const p50 = {
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name: `HTTP Mean Latency`,
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id: 'internal/http/builtin/latency/p50',
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type: metrics_1.MetricType.histogram,
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historic: true,
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implementation: histogram,
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unit: 'ms',
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handler: () => {
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const percentiles = histogram.percentiles([0.5]);
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return percentiles[0.5];
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}
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};
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const p95 = {
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name: `HTTP P95 Latency`,
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id: 'internal/http/builtin/latency/p95',
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type: metrics_1.MetricType.histogram,
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historic: true,
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implementation: histogram,
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handler: () => {
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const percentiles = histogram.percentiles([0.95]);
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return percentiles[0.95];
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},
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unit: 'ms'
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};
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const meter = {
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name: 'HTTP',
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historic: true,
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id: 'internal/http/builtin/reqs',
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unit: 'req/min'
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};
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this.metricService.registerMetric(p50);
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this.metricService.registerMetric(p95);
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this.metrics.set('http.latency', histogram);
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this.metrics.set('http.meter', this.metricService.meter(meter));
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}
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registerHttpsMetric() {
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if (this.metricService === undefined)
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return this.logger(`Failed to load metric service`);
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const histogram = new histogram_1.default();
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const p50 = {
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name: `HTTPS Mean Latency`,
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id: 'internal/https/builtin/latency/p50',
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type: metrics_1.MetricType.histogram,
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historic: true,
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implementation: histogram,
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unit: 'ms',
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handler: () => {
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const percentiles = histogram.percentiles([0.5]);
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return percentiles[0.5];
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}
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};
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const p95 = {
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name: `HTTPS P95 Latency`,
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id: 'internal/https/builtin/latency/p95',
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type: metrics_1.MetricType.histogram,
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historic: true,
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implementation: histogram,
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handler: () => {
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const percentiles = histogram.percentiles([0.95]);
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return percentiles[0.95];
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},
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unit: 'ms'
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};
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const meter = {
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name: 'HTTPS',
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historic: true,
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id: 'internal/https/builtin/reqs',
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unit: 'req/min'
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};
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this.metricService.registerMetric(p50);
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this.metricService.registerMetric(p95);
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this.metrics.set('https.latency', histogram);
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this.metrics.set('https.meter', this.metricService.meter(meter));
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}
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destroy() {
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if (this.modules.http !== undefined) {
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this.logger('unwraping http module');
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shimmer.unwrap(this.modules.http, 'emit');
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this.modules.http = undefined;
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}
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if (this.modules.https !== undefined) {
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this.logger('unwraping https module');
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shimmer.unwrap(this.modules.https, 'emit');
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this.modules.https = undefined;
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}
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if (this.hooks) {
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this.hooks.unhook();
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}
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this.logger('destroy');
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}
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hookHttp(nodule, name) {
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if (nodule.Server === undefined || nodule.Server.prototype === undefined)
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return;
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if (this.modules[name] !== undefined)
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return this.logger(`Module ${name} already hooked`);
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this.logger(`Hooking to ${name} module`);
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this.modules[name] = nodule.Server.prototype;
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if (name === 'http') {
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this.registerHttpMetric();
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}
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else if (name === 'https') {
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this.registerHttpsMetric();
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}
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const self = this;
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shimmer.wrap(nodule.Server.prototype, 'emit', (original) => {
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return function (event, req, res) {
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if (event !== 'request')
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return original.apply(this, arguments);
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const meter = self.metrics.get(`${name}.meter`);
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if (meter !== undefined) {
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meter.mark();
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}
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const latency = self.metrics.get(`${name}.latency`);
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if (latency === undefined)
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return original.apply(this, arguments);
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if (res === undefined || res === null)
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return original.apply(this, arguments);
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const startTime = Date.now();
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res.once('finish', _ => {
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latency.update(Date.now() - startTime);
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});
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return original.apply(this, arguments);
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};
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});
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}
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hookRequire() {
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this.hooks = requireMiddle(['http', 'https'], (exports, name) => {
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this.hookHttp(exports, name);
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return exports;
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});
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}
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}
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exports.default = HttpMetrics;
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//# 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