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39 lines
783 B
JavaScript
39 lines
783 B
JavaScript
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'use strict'
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const validate = require('aproba')
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const log = require('npmlog')
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const Bluebird = require('bluebird')
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let pulsers = 0
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let pulse
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function pulseStart (prefix) {
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if (++pulsers > 1) return
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pulse = setInterval(function () {
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log.gauge.pulse(prefix)
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}, 150)
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}
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function pulseStop () {
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if (--pulsers > 0) return
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clearInterval(pulse)
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}
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module.exports = function (prefix, cb) {
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validate('SF', [prefix, cb])
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if (!prefix) prefix = 'network'
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pulseStart(prefix)
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return function () {
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pulseStop()
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cb.apply(null, arguments)
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}
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}
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module.exports.withPromise = pulseWhile
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function pulseWhile (prefix, promise) {
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if (!promise) {
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promise = prefix
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prefix = ''
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}
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pulseStart(prefix)
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return Bluebird.resolve(promise).finally(() => pulseStop())
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}
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