How to register a Zend\Log Instance in the ServiceManager in ZF2
Solution 1
Add the following data to 'global.php'
'service_manager' => array(
'factories' => array(
'Zend\Log' => function ($sm) {
$log = new Zend\Log\Logger();
$writer = new Zend\Log\Writer\Stream('./data/logs/logfile');
$log->addWriter($writer);
return $log;
},
),
),
And then you'll be able to call
$this->getServiceLocator()->get('Zend\Log')->info('Something...');
Solution 2
Alternatively, and more elegantly, you could setup a log listener and keep your logger decoupled from your app. The EventManager
is a very powerful component and ZF2 is basically an event driven framework now.
In your module.php
you could add something like:
// Setup the Zend Logger, pseudocode
$logger = new Logger;
$writer = new Writer;
$logger->addWriter($writer);
// Attach a logging listener for the log event on application level, working code
$events = StaticEventManager::getInstance();
$events->attach('*', 'log', function($event) use ($logger) {
$target = get_class($event->getTarget());
$message = $event->getParam('message', 'No message provided');
$priority = (int) $event->getParam('priority', Logger::INFO);
$message = sprintf('%s: %s', $target, $message);
$logger->log($priority, $message);
});
Then from anywhere, e.g. from a Controller, you can do:
$this->getEventManager()->trigger('log', $this, array(
'priority' => 7,
'message' => 'some log message'
));
Solution 3
Maybe use the abstract logger factory for configuration instead of the normal factory
return array(
'log' => array(
'Log\App' => array(
'writers' => array(
array(
'name' => 'stream',
'priority' => 1000,
'options' => array(
'stream' => 'data/logs/app.log',
),
),
),
),
),
);
Solution 4
I created a default database writer object in my bootstrap and registered it in the ServiceManager.
public function onBootstrap(MvcEvent $e)
{
...
$serviceManager = $e->getApplication()->getServiceManager();
$dbAdapter = $serviceManager->get('Zend\Db\Adapter\Adapter');
$writer = new \Zend\Log\Writer\Db($dbAdapter, 'log_database_table');
$logger = new \Zend\Log\Logger();
$logger->addWriter($writer);
// this is optional but nice to have
\Zend\Log\Logger::registerErrorHandler($logger);
$serviceManager->setService('Zend\Log', $logger);
}
The AbstractController is an instance of "ServiceLocatorAwareInterface". So I can just call in my controller
public function indexAction()
{
...
$this->getServiceLocator()->get('Zend\Log')->info('this is a test log message');
...
}
Solution 5
Please try it again using the absolute path \
$writer = new \Zend\Log\Writer\Stream('log.log');
$logger = new \Zend\Log\Logger($writer);
Comments
-
Al-Punk almost 2 years
I am wondering what is the best way to initiate and re-use a logger instance through the ServiceManager in ZF2. Of course I can do a simple method to be used in any class, like:
public function getLogger () { $this->logger = new Logger(); $this->logger->addWriter(new Writer\Stream('/log/cms_errors.log')); return $logger; }
but I was wondering what is the best way to register a similar structure in the global.php. So far I can
add the following to global.php
'Zend\Log'=>array( 'timestampFormat' => 'Y-m-d', array( 'writerName' => 'Stream', 'writerParams' => array( 'stream' => '/log/zend.log', ), 'formatterName' => 'Simple', ), ),
If I try invoking it through:
$this->getServiceLocator()->get('Zend\Log')
I get a :
Zend\ServiceManager\ServiceManager::get was unable to fetch or create an instance for Zend\Log