178 lines
14 KiB
JavaScript
178 lines
14 KiB
JavaScript
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'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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//# sourceMappingURL=data:application/json;base64,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