Laravel Version

10.48.14 but the problem persists for the newest version as well

PHP Version

8.1.2

Description

When creating a logger using the build method, like this:

$logger = Log::build([
    'driver' => 'daily',
    'tap' => [ AppLoggingCustomizeFormatter::class ],
    'path' => storage_path('logs/test.log'),
    'level' => env('LOG_LEVEL', 'debug'),
    'replace_placeholders' => true,
    'days' => 14,
]);

classes that are specified in the ‘tap’ parameter are not called.

The reason is that in this case, the channel name for the log becomes ondemand and the method LogManager::configurationFor tries to find this channel in the site configuration (through $this->app['config']["logging.channels.ondemand"]) and does not find it there. Although it would be logical to use the configuration passed to the method Log Manager::build.

Steps To Reproduce

Create a class:

<?php

namespace AppLogging;

use MonologFormatterLineFormatter;
use IlluminateLogLogger;

class CustomizeFormatter
{
    /**
     * @param  IlluminateLogLogger  $logger
     * @return void
     */
    public function __invoke(Logger $logger): void
    {
        foreach ($logger->getHandlers() as $handler) {
            $handler->setFormatter(new LineFormatter(
                'TEST: [%datetime%] %channel%.%level_name%: %message% %context% %extra%' . PHP_EOL
            ));
        }
    }
}

Create a logger in any location that will be called, for example in php artisan tinker

$logger = Log::build([
    'driver' => 'single',
    'tap' => [ AppLoggingCustomizeFormatter::class ],
    'path' => storage_path('logs/test.log'),
    'level' => env('LOG_LEVEL', 'debug'),
    'replace_placeholders' => true,
    'days' => 14,
]);

After that, call $logger->info('Something here');
In the test.log file, the string should start with ‘TEST:’, but this will not happen.

Workaround

You need to add to the file /config/logging.php the following code for includes in the channel definition:

...
'channels' => [
    ...
    'ondemand' => [
            'tap' => [ AppLoggingCustomizeFormatter::class ],
        ],
    ...
]

Note

I am writing here because on my issue ( https://github.com/laravel/framework/issues/52354 ) on github, I was recommended to write here and then, if this is a real problem, then write a new issue. And this is a real problem – Laravel does not function as described in the documentation.

The above describes how to reproduce it in “Steps To Reproduce” section.

I expect the framework to work as described here. https://laravel.com/docs/11.x/logging#customizing-monolog-for-channels