nestjs-metrics-reporter/dist/reporter/reporter.service.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 __metadata = (this && this.__metadata) || function (k, v) {
    if (typeof Reflect === "object" && typeof Reflect.metadata === "function") return Reflect.metadata(k, v);
};
var ReporterService_1;
Object.defineProperty(exports, "__esModule", { value: true });
exports.ReporterService = void 0;
const common_1 = require("@nestjs/common");
const metrics_service_1 = require("../metrics/metrics.service");
let ReporterService = ReporterService_1 = class ReporterService {
    constructor(metrics) {
        this.metrics = metrics;
    }
    onApplicationBootstrap() {
        ReporterService_1.metricsService = this.metrics;
    }
    static counter(key, labels, value = 1) {
        try {
            ReporterService_1.metricsService.incCounter(key, labels, value);
        }
        catch (error) {
            this.logError('increment counter', key, labels, error);
        }
    }
    static gauge(key, value, labels) {
        try {
            ReporterService_1.metricsService.setGauge(key, value, labels);
        }
        catch (error) {
            this.logError('set gauge', key, labels, error);
        }
    }
    static histogram(key, value, labels, buckets) {
        try {
            ReporterService_1.metricsService.observeHistogram(key, value, labels, buckets);
        }
        catch (error) {
            this.logError('observe histogram', key, labels, error);
        }
    }
    static summary(key, value, labels, percentiles) {
        try {
            ReporterService_1.metricsService.observeSummary(key, value, labels, percentiles);
        }
        catch (error) {
            this.logError('observe summary', key, labels, error);
        }
    }
    static async pushMetrics(jobName) {
        try {
            await ReporterService_1.metricsService.pushMetrics(jobName);
        }
        catch (e) {
            this.logger.error(`Error pushing metrics: ${e}`);
        }
    }
    static logError(action, key, labels, error) {
        this.logger.error({
            message: `Failed to ${action}`,
            metric: key,
            labels,
            error: error instanceof Error ? error.message : String(error),
        });
    }
};
exports.ReporterService = ReporterService;
ReporterService.logger = new common_1.Logger(ReporterService_1.name);
exports.ReporterService = ReporterService = ReporterService_1 = __decorate([
    (0, common_1.Injectable)(),
    __metadata("design:paramtypes", [metrics_service_1.MetricsService])
], ReporterService);
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