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