README

Description

A Magento 2 module which provides a multi-server lock service. This allows developers to apply mutual exclusion locks to shared resources so that they are not accessed simultaneously.

Prerequisites

• PHP 7.0 or newer.
• magento/framework module 100 or newer.
• Composer (https://getcomposer.org/download/).

Installation

composer require snowio/magento2-lock
php bin/magento setup:upgrade
php bin/magento setup:di:compile
php bin/magento cache:flush

Usage

The lock service can be accessed through dependency injection. Please refer the dependency injection section of the Magento DevDocs for more information on how to use dependency injection.

public boolean LockService::acquireLock(string $name, int $timeout)

Attempt to obtain a lock ####Parameters

• $lockName : The lock identifier/name
• $timeout : Lock timeout. A negative timeout implies an infinite timeout.

####Return Values A boolean indicating if the the lock was acquired.

public LockService::releaseLock($lockName)

Release the lock

Parameters

• $lockName : The lock identifier/name

Example

namespace Vendor\Module\Model\Accessors;
class ResourceAccessor
{
    private $lockService;
    
    public function __construct(
        SnowIO\Lock\Api\LockService $lockService
    ) {
        $this->lockService = $lockService    
    }
    
    public function access($resource)
    {
        $lockName = //.. resource lock name
        
        //try acquire the lock
        if (!$this->lockService->acquireLock($lockName, 0)) {
            //Lock was not acquired ...
        }
        //Lock was acquired 
        
        try {
            // Process $resource 
        } finally {
            //release the lock
            $this->lockService->releaseLock($lockName);
        }
        
    }
}

Applications

• snowio/magento2-product-save-mutex : Uses this module in order to make product save API calls mutually exclusive.
• snowio/magento2-idempotent-api : Uses this module in order to determine request conflicts whereby 2 or more requests that have the same X-Message-Group-ID are dispatched.

License

This software is licensed under the MIT License. View the license