overleaf/services/clsi/app/js/LockManager.js

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/* eslint-disable
handle-callback-err,
no-unused-vars,
*/
// TODO: This file was created by bulk-decaffeinate.
// Fix any style issues and re-enable lint.
/*
* decaffeinate suggestions:
* DS101: Remove unnecessary use of Array.from
* DS102: Remove unnecessary code created because of implicit returns
* DS207: Consider shorter variations of null checks
* Full docs: https://github.com/decaffeinate/decaffeinate/blob/master/docs/suggestions.md
*/
let LockManager
const Settings = require('@overleaf/settings')
const logger = require('logger-sharelatex')
const Lockfile = require('lockfile') // from https://github.com/npm/lockfile
const Errors = require('./Errors')
const fs = require('fs')
const Path = require('path')
module.exports = LockManager = {
LOCK_TEST_INTERVAL: 1000, // 50ms between each test of the lock
MAX_LOCK_WAIT_TIME: 15000, // 10s maximum time to spend trying to get the lock
LOCK_STALE: 5 * 60 * 1000, // 5 mins time until lock auto expires
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runWithLock(path, runner, callback) {
if (callback == null) {
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callback = function (error) {}
}
const lockOpts = {
wait: this.MAX_LOCK_WAIT_TIME,
pollPeriod: this.LOCK_TEST_INTERVAL,
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stale: this.LOCK_STALE,
}
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return Lockfile.lock(path, lockOpts, function (error) {
if ((error != null ? error.code : undefined) === 'EEXIST') {
return callback(new Errors.AlreadyCompilingError('compile in progress'))
} else if (error != null) {
return fs.lstat(path, (statLockErr, statLock) =>
fs.lstat(Path.dirname(path), (statDirErr, statDir) =>
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fs.readdir(Path.dirname(path), function (readdirErr, readdirDir) {
logger.err(
{
error,
path,
statLock,
statLockErr,
statDir,
statDirErr,
readdirErr,
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readdirDir,
},
'unable to get lock'
)
return callback(error)
})
)
)
} else {
return runner((error1, ...args) =>
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Lockfile.unlock(path, function (error2) {
error = error1 || error2
if (error != null) {
return callback(error)
}
return callback(null, ...Array.from(args))
})
)
}
})
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},
}