Laravel给生产环境添加监听事件(SQL日志监听)

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laravel版本:5.2.*

一、创建监听器

php artisan make:listener QueryListener --event=Illuminate\\Database\\Events\\QueryExecuted

or

sudo /usr/local/bin/php artisan make:listener QueryListener --event=Illuminate\\Database\\Events\\QueryExecuted

会自动生成文件 app/Listeners/QueryListener.php

二、注册事件

打开 app/Providers/EventServiceProvider.php,在 $listen 中添加 Illuminate\Database\Events\QueryExecuted 事件的监听器为 QueryListener

protected $listen = [

'Illuminate\Database\Events\QueryExecuted' => [

'App\Listeners\QueryListener',

],

];

最终代码如下

namespace App\Providers;

use Illuminate\Contracts\Events\Dispatcher as DispatcherContract;

use Illuminate\Foundation\Support\Providers\EventServiceProvider as ServiceProvider;

class EventServiceProvider extends ServiceProvider

{

/**

* The event listener mappings for the application.

*

* @var array

*/

protected $listen = [

'App\Events\SomeEvent' => [

'App\Listeners\EventListener',

],

'Illuminate\Database\Events\QueryExecuted' => [

'App\Listeners\QueryListener',

],

];

/**

* Register any other events for your application.

*

* @param \Illuminate\Contracts\Events\Dispatcher $events

* @return void

*/

public function boot(DispatcherContract $events)

{

parent::boot($events);

//

}

}

三、添加逻辑

打开 app/Listeners/QueryListener.php

光有一个空的监听器是不够的,我们需要自己实现如何把 $sql 记录到日志中。为此,对 QueryListener 进行改造,完善其 handle 方法如下:

$sql = str_replace("?", "'%s'", $event->sql);

$log = vsprintf($sql, $event->bindings);

Log::info($log);

最终代码如下

namespace App\Listeners;

use Log;

use Illuminate\Database\Events\QueryExecuted;

use Illuminate\Queue\InteractsWithQueue;

use Illuminate\Contracts\Queue\ShouldQueue;

class QueryListener

{

/**

* Create the event listener.

*

* @return void

*/

public function __construct()

{

//

}

/**

* Handle the event.

*

* @param QueryExecuted $event

* @return void

*/

public function handle(QueryExecuted $event)

{

$sql = str_replace("?", "'%s'", $event->sql);

$log = vsprintf($sql, $event->bindings);

Log::info($log);

}

}

总结

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