@openshift-console/plugin-shared/lib/datetime/prometheus.js

Console plugin shared code

import * as _ from 'lodash';
// Conversions between units and milliseconds
const s = 1000;
const m = s * 60;
const h = m * 60;
const d = h * 24;
const w = d * 7;
const units = { w, d, h, m, s };
/**
 * Converts a duration in milliseconds to a Prometheus time duration string like "1h 10m"
 * @param {number} ms - Time duration in milliseconds
 * @returns {string} The duration converted to a Prometheus time duration string
 * @example
 * ```
 * formatPrometheusDuration(65000) // Returns "1m 5s"
 * ```
 */
export const formatPrometheusDuration = (ms) => {
    if (!_.isFinite(ms) || ms < 0) {
        return '';
    }
    let remaining = ms;
    let str = '';
    _.each(units, (factor, unit) => {
        const n = Math.floor(remaining / factor);
        if (n > 0) {
            str += `${n}${unit} `;
            remaining -= n * factor;
        }
    });
    return _.trim(str);
};
/**
 * Converts a Prometheus time duration like "1h 10m 23s" to milliseconds
 * @param {string} duration - Prometheus time duration string
 * @returns {number} The duration converted to a Prometheus time duration string or 0 if the duration could not be parsed
 * @example
 * ```
 * parsePrometheusDuration("1m 5s") // Returns 65000
 * ```
 */
export const parsePrometheusDuration = (duration) => {
    try {
        const parts = duration
            .trim()
            .split(/\s+/)
            .map((p) => p.match(/^(\d+)([wdhms])$/));
        return _.sumBy(parts, (p) => parseInt(p[1], 10) * units[p[2]]);
    }
    catch (ignored) {
        // Invalid duration format
        return 0;
    }
};
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