nestjs-metrics-reporter/dist/reporter/reporter.module.js

A global static Prometheus metrics reporter for NestJS applications

"use strict";
var __decorate = (this && this.__decorate) || function (decorators, target, key, desc) {
    var c = arguments.length, r = c < 3 ? target : desc === null ? desc = Object.getOwnPropertyDescriptor(target, key) : desc, d;
    if (typeof Reflect === "object" && typeof Reflect.decorate === "function") r = Reflect.decorate(decorators, target, key, desc);
    else for (var i = decorators.length - 1; i >= 0; i--) if (d = decorators[i]) r = (c < 3 ? d(r) : c > 3 ? d(target, key, r) : d(target, key)) || r;
    return c > 3 && r && Object.defineProperty(target, key, r), r;
};
var ReporterModule_1;
Object.defineProperty(exports, "__esModule", { value: true });
exports.ReporterModule = void 0;
const common_1 = require("@nestjs/common");
const reporter_service_1 = require("./reporter.service");
const prom_client_1 = require("prom-client");
const metrics_service_1 = require("../metrics/metrics.service");
const metrics_controller_1 = require("../metrics/metrics.controller");
const constants_1 = require("../constants");
const core_1 = require("@nestjs/core");
let ReporterModule = ReporterModule_1 = class ReporterModule {
    static forRoot(config = {}) {
        const registry = this.configureRegistry(config);
        const providers = [
            {
                provide: prom_client_1.Registry,
                useValue: registry
            },
            {
                provide: constants_1.CONFIG_OPTIONS,
                useValue: config
            },
            metrics_service_1.MetricsService,
            reporter_service_1.ReporterService
        ];
        if (config.interceptors) {
            providers.push(...config.interceptors.map(interceptor => ({
                provide: core_1.APP_INTERCEPTOR,
                useClass: interceptor,
            })));
        }
        return {
            module: ReporterModule_1,
            providers,
            controllers: [metrics_controller_1.MetricsController],
            exports: [reporter_service_1.ReporterService]
        };
    }
    static forRootAsync(options) {
        return {
            module: ReporterModule_1,
            imports: options.imports,
            providers: [
                {
                    provide: constants_1.CONFIG_OPTIONS,
                    useFactory: options.useFactory,
                    inject: options.inject,
                },
                {
                    provide: prom_client_1.Registry,
                    useFactory: async (config) => {
                        return ReporterModule_1.configureRegistry(config);
                    },
                    inject: [constants_1.CONFIG_OPTIONS],
                },
                metrics_service_1.MetricsService,
                reporter_service_1.ReporterService
            ],
            controllers: [metrics_controller_1.MetricsController],
            exports: [reporter_service_1.ReporterService]
        };
    }
    static configureRegistry(config = {}) {
        const registry = new prom_client_1.Registry();
        if (config.defaultLabels) {
            registry.setDefaultLabels(config.defaultLabels);
        }
        if (config.defaultMetricsEnabled) {
            (0, prom_client_1.collectDefaultMetrics)({ register: registry });
        }
        return registry;
    }
};
exports.ReporterModule = ReporterModule;
exports.ReporterModule = ReporterModule = ReporterModule_1 = __decorate([
    (0, common_1.Global)(),
    (0, common_1.Module)({})
], ReporterModule);
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