@breautek/storm/lib/MetricStore.js

Object-Oriented REST API framework

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.MetricStore = void 0;
const tslib_1 = require("tslib");
const prom = tslib_1.__importStar(require("prom-client"));
class CounterWrapper {
    constructor(config) {
        this.$inner = new prom.Counter({
            name: config.name,
            help: config.help,
            labelNames: config.labelNames ?? []
        });
    }
    inc(labelsOrValue, value) {
        if (typeof labelsOrValue === 'number') {
            this.$inner.inc(labelsOrValue);
        }
        else if (labelsOrValue !== undefined) {
            this.$inner.inc(labelsOrValue, value);
        }
        else {
            this.$inner.inc();
        }
    }
}
class GaugeWrapper {
    constructor(config) {
        this.$inner = new prom.Gauge({
            name: config.name,
            help: config.help,
            labelNames: config.labelNames ?? []
        });
    }
    set(labelsOrValue, value) {
        if (typeof labelsOrValue === 'number') {
            this.$inner.set(labelsOrValue);
        }
        else {
            this.$inner.set(labelsOrValue, value);
        }
    }
    inc(labelsOrValue, value) {
        if (typeof labelsOrValue === 'number') {
            this.$inner.inc(labelsOrValue);
        }
        else if (labelsOrValue !== undefined) {
            this.$inner.inc(labelsOrValue, value);
        }
        else {
            this.$inner.inc();
        }
    }
    dec(labelsOrValue, value) {
        if (typeof labelsOrValue === 'number') {
            this.$inner.dec(labelsOrValue);
        }
        else if (labelsOrValue !== undefined) {
            this.$inner.dec(labelsOrValue, value);
        }
        else {
            this.$inner.dec();
        }
    }
}
class HistogramWrapper {
    constructor(config) {
        this.$inner = new prom.Histogram({
            name: config.name,
            help: config.help,
            labelNames: config.labelNames ?? [],
            ...(config.buckets !== undefined ? { buckets: config.buckets } : {})
        });
    }
    observe(labelsOrValue, value) {
        if (typeof labelsOrValue === 'number') {
            this.$inner.observe(labelsOrValue);
        }
        else {
            this.$inner.observe(labelsOrValue, value);
        }
    }
    startTimer(labels) {
        return this.$inner.startTimer(labels);
    }
}
class MetricStore {
    constructor() {
        prom.collectDefaultMetrics();
    }
    static getInstance() {
        if (!MetricStore.$instance) {
            MetricStore.$instance = new MetricStore();
        }
        return MetricStore.$instance;
    }
    setDefaultLabels(labels) {
        prom.register.setDefaultLabels(labels);
    }
    createCounter(config) {
        return new CounterWrapper(config);
    }
    createGauge(config) {
        return new GaugeWrapper(config);
    }
    createHistogram(config) {
        return new HistogramWrapper(config);
    }
    async getMetrics() {
        return {
            type: prom.register.contentType,
            content: await prom.register.metrics()
        };
    }
}
exports.MetricStore = MetricStore;
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