README

---eonx_docs--- title: Introduction weight: 0 ---eonx_docs---

This package allows you to create and configure Monolog Loggers in centralised and reusable way:

• Configure channels using PHP
• Control Handlers and Processors order
• Integration with popular frameworks (e.g. Laravel, Symfony)
• Discover Handlers and Processors automatically in your application

Require package (Composer)

The recommended way to install this package is to use Composer:

$ composer require eonx-com/easy-logging

Usage

Here is a simple example on how to use the LoggerFactoryInterface to create loggers:

// Instantiate the logger factory manually or use DI ...

$default = $loggerFactory->create(); // Calling create without arguments will create logger for default channel

$console = $loggerFactory->create('console'); // Create logger for console channel specifically

Usage in Framework

The different integrations provided by this package will by default register the logger for your default channel in the service container under the following service ids:

• Psr\Log\LoggerInterface
• logger

You can then use dependency injection anywhere you like!

Thanks to Autowiring via setters in Symfony, you can use \EonX\EasyLogging\Logger\LoggerAwareTrait to simplify the injection of Psr\Log\LoggerInterface.

Logger Configuration

The LoggerFactoryInterface allows you to set different collections of "config providers", each config can define:

• channels: if defined the config will be applied only to given channels, if null the config will be applied to all channels
• priority: define the order each config must be set on the logger instance, higher the priority later the config will be added to the logger instance

HandlerConfig

The HandlerConfigInterface allows you to configure \Monolog\Handler\HandlerInterface to be set loggers created by the factory. Like other configs, it allows you to specify a list of channels this handler is for and, also a priority to control when the handler must be executed.

To tell the logger factory about your HandlerConfigInterface, you must use a HandlerConfigProviderInterface. The logger factory accepts a collection of providers via the setHandlerConfigProviders() method:

use EonX\EasyLogging\Factory\LoggerFactory;

$handlerConfigProviders = [];

// Add your own handler config providers to $handlerConfigProviders ...

$loggerFactory = new LoggerFactory();

// Set your handler config providers on the logger factory
$loggerFactory->setHandlerConfigProviders($handlerConfigProviders);

Here is a simple example of a HandlerConfigProviderInterface to register a StreamHandler:

namespace App\Logger;

use EonX\EasyLogging\Config\HandlerConfig;
use EonX\EasyLogging\Provider\HandlerConfigProviderInterface;
use Monolog\Handler\StreamHandler;

final class StreamHandlerConfigProvider implements HandlerConfigProviderInterface
{
    /**
     * @return iterable<\EonX\EasyLogging\Config\HandlerConfigInterface>
     */
    public function handlers(): iterable
    {
        /**
         * This method returns an iterable to make it easier to handle complex handler configs definition
         * But you can simply return an array if you want.
         */

        yield new HandlerConfig(new StreamHandler('php://stdout'));
    }
}

ProcessorConfig

The ProcessorConfigInterface allows you to configure \Monolog\Processor\ProcessorInterface to be set loggers created by the factory. Like other configs, it allows you to specify a list of channels this handler is for and, also a priority to control when the handler must be executed.

To tell the logger factory about your ProcessorConfigInterface, you must use a ProcessorConfigProviderInterface. The logger factory accepts a collection of providers via the setProcessorConfigProviders() method:

use EonX\EasyLogging\Factory\LoggerFactory;

$processorConfigProviders = [];

// Add your own processor config providers to $handlerConfigProviders ...

$loggerFactory = new LoggerFactory();

// Set your processor config providers on the logger factory
$loggerFactory->setProcessorConfigProviders($processorConfigProviders);

Here is a simple example of a ProcessorConfigProviderInterface to register a TagProcessor:

namespace App\Logger;

use EonX\EasyLogging\Config\ProcessorConfig;
use EonX\EasyLogging\Provider\ProcessorConfigProviderInterface;
use Monolog\Processor\TagProcessor;

final class TagProcessorConfigProvider implements ProcessorConfigProviderInterface
{
    /**
     * @return iterable<\EonX\EasyLogging\Config\ProcessorConfigInterface>
     */
    public function processors(): iterable
    {
        /**
         * This method returns an iterable to make it easier to handle complex processor configs definition
         * But you can simply return an array if you want.
         */

        yield new ProcessorConfig(new TagProcessor(['tag-1', 'tag-2']));
    }
}

LoggerConfigurator

The \Monolog\Logger class has methods allowing you to configure it even more (e.g. using microseconds). To deal with that, the logger factory accepts a collection of LoggerConfiguratorInterface.

To tell the logger factory about your LoggerConfiguratorInterface, you must call the setLoggerConfigurators() method:

use EonX\EasyLogging\Factory\LoggerFactory;

$loggerConfigurators = [];

// Add your own logger configurators to $loggerConfigurators ...

$loggerFactory = new LoggerFactory();

// Set your logger configurators on the logger factory
$loggerFactory->setLoggerConfigurators($loggerConfigurators);

Here is a simple example of a LoggerConfiguratorInterface to use microseconds:

namespace App\Logger;

use EonX\EasyLogging\Config\AbstractLoggingConfig;
use EonX\EasyLogging\Configurator\LoggerConfiguratorInterface;
use Monolog\Logger;

final class UseMicrosecondsLoggerConfigurator extends AbstractLoggingConfig implements LoggerConfiguratorInterface
{
    public function configure(Logger $logger) : void
    {
        $logger->useMicrosecondTimestamps(true);
    }
}