Yii2 Locker Extension

Extension includes following features:

• Activate/Deactivate resource lock by unique identifier.
• Check and block request if exists active lock.

For license information check the LICENSE-file.

Installation

The preferred way to install this extension is through composer.

Either run

php composer.phar require --prefer-dist notamedia/yii2-locker

or add

"notamedia/yii2-locker": "1.0.0"

to the require section of your composer.json.

Configuration

To use this extension, simply add the following code in your application configuration:

return [
    //....
    'components' => [
        //....
        'lockManager' => [
            'class' => LockManager::class,
            'lockTime' => [
                LockManager::DEFAULT_LOCK_TIME_KEY => 900,
            ]
        ],
        //....
    ],
    //....
];

• Note: you may set custom time for each resource, simple add to lockTime, key - resource class and value - time in seconds
• Note: if your db driver non mysql, you need set custom 'initTimeExpressionValue' = '...' and 'diffExpressionValue' = '...'
• Note: if you want to use custom lock class, you need set new LockInterface::class definitions like

'container' => [
    '...',
    'definitions' => [
        '...',
        LockInterface::class => Lock::class
        '...'
    ],
    '...'
]

connect following actions in your controllers and configure routing

return [
    //....
    'lock' => [
        'class' => LockAction::class,
        'modelClass' => $this->modelClass,
        'checkAccess' => [$this, 'checkAccess']
    ],
    'unlock' => [
        'class' => UnlockAction::class,
        'modelClass' => $this->modelClass,
        'checkAccess' => [$this, 'checkAccess'],
    ],
    //....
];

• Note: you may set 'lockManager' = '...' attribute if your LockManager component has other key

attach behavior to check lock, or you can check by yourself

return [
    //....
    [
        'class' => LockControlFilter::class,
        'only' => ['update']
    ],
    //....
];

• Note: you may set 'lockManager' = '...' attribute if your LockManager component has other key

connect and execute migration, example:

For yii2 > 2.0.10

'controllerMap' => [
    //...
    'migrate' => [
        'class' => MigrateController::class,
        'migrationNamespaces' => [
            'notamedia\locker\migrations',
        ],
        //...
    ],
    //...
 ]

For yii2 < 2.0.10 create new migration and use extends

class mxxxxxx_xxxxxx_create_table_lock extends m000000_000000_create_table_lock

Usage

Methods:

• LockAction - activates lock and returns 204 status code if successful
• UnlockAction - deactivates lock and returns 204 status code if successful

Exceptions

• LockAnotherUserException - exception if lock set another user, status code 500
• LockNotExistException - exception if lock not exist, status code 500
• LockNotExpiredException - exception if lock actual and its time not expired, status code 500