@allspark-js/core/rta/prometheus.js

Core library to create js applications.

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
var PrometheusRta = /** @class */ (function () {
    function PrometheusRta(deps) {
        this.deps = deps;
        this.metrics = {
            counter: {},
            histogram: {},
        };
    }
    PrometheusRta.prototype.createPromMetric = function (_a) {
        var type = _a.type, metricData = _a.metricData;
        var promClient = this.deps.promClient;
        if (type === 'counter') {
            return new promClient.Counter(metricData);
        }
        return new promClient.Histogram(metricData);
    };
    PrometheusRta.prototype.getMetric = function (_a) {
        var type = _a.type, name = _a.name, _b = _a.labels, labels = _b === void 0 ? {} : _b;
        var configManager = this.deps.configManager;
        var prefix = configManager.get('rta:metricPrefix');
        var metric = this.metrics[type];
        var metricName = "".concat(prefix).concat(name);
        var labelNames = Object.keys(labels);
        var metricData = {
            name: metricName,
            help: metricName,
        };
        if (labels) {
            metricData.labelNames = labelNames;
        }
        if (!metric[name]) {
            metric[name] = {
                instance: this.createPromMetric({ type: type, metricData: metricData }),
                labelNames: labelNames,
            };
        }
        return metric[name].instance;
    };
    PrometheusRta.prototype.inc = function (_a) {
        var metric = _a.metric, labels = _a.labels, _b = _a.value, value = _b === void 0 ? 1 : _b;
        var promMetric = this.getMetric({
            type: 'counter',
            name: metric,
            labels: labels,
        });
        promMetric.inc(value);
    };
    PrometheusRta.prototype.record = function (_a) {
        var metric = _a.metric, labels = _a.labels, value = _a.value;
        var promMetric = this.getMetric({
            type: 'histogram',
            name: metric,
            labels: labels,
        });
        promMetric.observe(value);
    };
    return PrometheusRta;
}());
exports.default = PrometheusRta;