overleaf/services/document-updater/app/js/Profiler.js

62 lines
1.6 KiB
JavaScript

/* eslint-disable
no-unused-vars,
*/
// TODO: This file was created by bulk-decaffeinate.
// Fix any style issues and re-enable lint.
/*
* decaffeinate suggestions:
* DS206: Consider reworking classes to avoid initClass
* Full docs: https://github.com/decaffeinate/decaffeinate/blob/master/docs/suggestions.md
*/
let Profiler
const Settings = require('@overleaf/settings')
const logger = require('logger-sharelatex')
const deltaMs = function (ta, tb) {
const nanoSeconds = (ta[0] - tb[0]) * 1e9 + (ta[1] - tb[1])
const milliSeconds = Math.floor(nanoSeconds * 1e-6)
return milliSeconds
}
module.exports = Profiler = (function () {
Profiler = class Profiler {
static initClass() {
this.prototype.LOG_CUTOFF_TIME = 1000
}
constructor(name, args) {
this.name = name
this.args = args
this.t0 = this.t = process.hrtime()
this.start = new Date()
this.updateTimes = []
}
log(label) {
const t1 = process.hrtime()
const dtMilliSec = deltaMs(t1, this.t)
this.t = t1
this.updateTimes.push([label, dtMilliSec]) // timings in ms
return this // make it chainable
}
end(message) {
const totalTime = deltaMs(this.t, this.t0)
if (totalTime > this.LOG_CUTOFF_TIME) {
// log anything greater than cutoff
const args = {}
for (const k in this.args) {
const v = this.args[k]
args[k] = v
}
args.updateTimes = this.updateTimes
args.start = this.start
args.end = new Date()
logger.log(args, this.name)
}
return totalTime
}
}
Profiler.initClass()
return Profiler
})()