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cross-process-lock
Advanced tools
Cross-process file locking solution with lock-queue
const { lock } = require('cross-process-lock');
const { writeFileSync } = require('fs');
// create a lock for the given file
const unlock = await lock('file.txt')
// do smth with the file here
writeFileSync('file.txt', 'some content', 'utf8');
// unlock file with the received function
return unlock();
lock(file[, options])
- creates a lock for the given file for the actual process
Arguments:
{string} file
- the path of the file needs to be locked{lockOptions} options
- the options to use to lock file, e.g timeoutsReturns: Promise<Function>
- resolved with unlock
function in case of successful lock; rejected in case of file couldn't be lock in the given timeout
unlock(file)
- deletes the lock for the given file for the actual process
Arguments:
{string} file
- the path of the file needs to be unlockedReturns: Promise
- resolved in case of successful unlock or rejected in case of any error
withLock(file[, options], callback)
- executes the callback with locking before and unlocking after the execution
Arguments:
{string} file
- path of the file needs to be locked{lockOptions} options
- the options to use to lock file, e.g timeouts{() => Promise<T>} callback
- the function to be executedReturns: Promise<T>
- resolved/rejected with the result of the callback
Option | Description | Default |
---|---|---|
lockTimeout {number} | timeout (ms) when locks automatically released | 20 minutes |
waitTimeout {number} | timeout (ms) until lock waits to lock a file | 10 seconds |
The package uses the debug NPM package with cross-process-lock:PID
name, where PID
is the process ID of the current process.
To enable debug logging, use for example the DEBUG=cross-process-lock:*
environment variable, but for more information, check the documentation of the debug package.
FAQs
Cross-process file locking solution with lock-queue
We found that cross-process-lock demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 1 open source maintainer collaborating on the project.
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