mirror of
https://github.com/overleaf/overleaf.git
synced 2024-11-07 20:31:06 -05:00
31 lines
1.3 KiB
CoffeeScript
31 lines
1.3 KiB
CoffeeScript
Settings = require('settings-sharelatex')
|
|
logger = require "logger-sharelatex"
|
|
Lockfile = require('lockfile') # from https://github.com/npm/lockfile
|
|
Errors = require "./Errors"
|
|
fs = require("fs")
|
|
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
|
|
|
|
runWithLock: (path, runner = ((releaseLock = (error) ->) ->), callback = ((error) ->)) ->
|
|
lockOpts =
|
|
wait: @MAX_LOCK_WAIT_TIME
|
|
pollPeriod: @LOCK_TEST_INTERVAL
|
|
stale: @LOCK_STALE
|
|
Lockfile.lock path, lockOpts, (error) ->
|
|
if error?.code is 'EEXIST'
|
|
return callback new Errors.AlreadyCompilingError("compile in progress")
|
|
else if error?
|
|
fs.lstat path, (statLockErr, statLock)->
|
|
fs.lstat Path.dirname(path), (statDirErr, statDir)->
|
|
fs.readdir Path.dirname(path), (readdirErr, readdirDir)->
|
|
logger.err error:error, path:path, statLock:statLock, statLockErr:statLockErr, statDir:statDir, statDirErr: statDirErr, readdirErr:readdirErr, readdirDir:readdirDir, "unable to get lock"
|
|
return callback(error)
|
|
else
|
|
runner (error1, args...) ->
|
|
Lockfile.unlock path, (error2) ->
|
|
error = error1 or error2
|
|
return callback(error) if error?
|
|
callback(null, args...)
|