RoadRunner locks

This package provides a PHP integration package for the RoadRunner Lock plugin, which allows for easy management of distributed locks in PHP applications. The plugin provides a fast, lightweight, and reliable way to acquire, release, and manage locks in a distributed environment, making it ideal for use in high-traffic web applications and microservices.

Requirements

Make sure that your server is configured with following PHP version and extensions:

• PHP 8.1+

Installation

You can install the package via composer:

composer require roadrunner-php/lock

Usage

use RoadRunner\Lock\Lock;
use Spiral\Goridge\RPC\RPC;

require __DIR__ . '/vendor/autoload.php';

$lock = new Lock(RPC::create('tcp://127.0.0.1:6001'));

Acquire lock

Locks a resource so that it can be accessed by one process at a time. When a resource is locked, other processes that attempt to lock the same resource will be blocked until the lock is released.

$id = $lock->lock('pdf:create');

// Acquire lock with ttl - 10 seconds
$id = $lock->lock('pdf:create', ttl: 10);
// or
$id = $lock->lock('pdf:create', ttl: new \DateInterval('PT10S'));

// Acquire lock and wait 5 seconds until lock will be released
$id = $lock->lock('pdf:create', wait: 5);
// or
$id = $lock->lock('pdf:create', wait: new \DateInterval('PT5S'));

// Acquire lock with id - 14e1b600-9e97-11d8-9f32-f2801f1b9fd1
$id = $lock->lock('pdf:create', id: '14e1b600-9e97-11d8-9f32-f2801f1b9fd1');

Acquire read lock

Locks a resource for shared access, allowing multiple processes to access the resource simultaneously. When a resource is locked for shared access, other processes that attempt to lock the resource for exclusive access will be blocked until all shared locks are released.

$id = $lock->lockRead('pdf:create', ttl: 10);
// or
$id = $lock->lockRead('pdf:create', ttl: new \DateInterval('PT10S'));

// Acquire lock and wait 5 seconds until lock will be released
$id = $lock->lockRead('pdf:create', wait: 5);
// or
$id = $lock->lockRead('pdf:create', wait: new \DateInterval('PT5S'));

// Acquire lock with id - 14e1b600-9e97-11d8-9f32-f2801f1b9fd1
$id = $lock->lockRead('pdf:create', id: '14e1b600-9e97-11d8-9f32-f2801f1b9fd1');

Release lock

Releases an exclusive lock or read lock on a resource that was previously acquired by a call to lock() or lockRead().

// Release lock after task is done.
$lock->release('pdf:create', $id);

// Force release lock
$lock->forceRelease('pdf:create');

Check lock

Checks if a resource is currently locked and returns information about the lock.

$status = $lock->exists('pdf:create');
if($status) {
    // Lock exists
} else {
    // Lock not exists
}

Update TTL

Updates the time-to-live (TTL) for the locked resource.

// Add 10 seconds to lock ttl
$lock->updateTTL('pdf:create', $id, 10);
// or
$lock->updateTTL('pdf:create', $id, new \DateInterval('PT10S'));

Testing

composer test

Credits

• butschster

License

The MIT License (MIT). Please see License File for more information.