n8n/dist/metrics/prometheus/queue-metrics.service.js

n8n Workflow Automation Tool

"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;
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var __metadata = (this && this.__metadata) || function (k, v) {
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    return (mod && mod.__esModule) ? mod : { "default": mod };
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Object.defineProperty(exports, "__esModule", { value: true });
exports.PrometheusQueueMetricsService = void 0;
const config_1 = require("@n8n/config");
const di_1 = require("@n8n/di");
const n8n_core_1 = require("n8n-core");
const prom_client_1 = __importDefault(require("prom-client"));
const event_service_1 = require("../../events/event.service");
let PrometheusQueueMetricsService = class PrometheusQueueMetricsService {
    constructor(config, executionsConfig, instanceSettings, eventService) {
        this.config = config;
        this.executionsConfig = executionsConfig;
        this.instanceSettings = instanceSettings;
        this.eventService = eventService;
    }
    get enabled() {
        return (this.config.includeQueueMetrics &&
            this.executionsConfig.mode === 'queue' &&
            this.instanceSettings.instanceType === 'main');
    }
    init() {
        const prefix = this.config.prefix;
        const waitingGauge = new prom_client_1.default.Gauge({
            name: `${prefix}scaling_mode_queue_jobs_waiting`,
            help: 'Current number of enqueued jobs waiting for pickup in scaling mode.',
        });
        waitingGauge.set(0);
        const activeGauge = new prom_client_1.default.Gauge({
            name: `${prefix}scaling_mode_queue_jobs_active`,
            help: 'Current number of jobs being processed across all workers in scaling mode.',
        });
        activeGauge.set(0);
        const completedCounter = new prom_client_1.default.Counter({
            name: `${prefix}scaling_mode_queue_jobs_completed`,
            help: 'Total number of jobs completed across all workers in scaling mode since instance start.',
        });
        completedCounter.inc(0);
        const failedCounter = new prom_client_1.default.Counter({
            name: `${prefix}scaling_mode_queue_jobs_failed`,
            help: 'Total number of jobs failed across all workers in scaling mode since instance start.',
        });
        failedCounter.inc(0);
        this.eventService.on('job-counts-updated', (jobCounts) => {
            waitingGauge.set(jobCounts.waiting);
            activeGauge.set(jobCounts.active);
            completedCounter.inc(jobCounts.completed);
            failedCounter.inc(jobCounts.failed);
        });
    }
};
exports.PrometheusQueueMetricsService = PrometheusQueueMetricsService;
exports.PrometheusQueueMetricsService = PrometheusQueueMetricsService = __decorate([
    (0, di_1.Service)(),
    __metadata("design:paramtypes", [config_1.PrometheusMetricsConfig, config_1.ExecutionsConfig, n8n_core_1.InstanceSettings, event_service_1.EventService])
], PrometheusQueueMetricsService);
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