Integrating OpenCensus with Laravel

Laravel 5.5

1. To add OpenCensus to our Laravel application, we will create a ServiceProvider. In app/Providers/OpenCensusProvider.php:

   <?php
   namespace App\Providers;
   
   use Illuminate\Support\ServiceProvider;
   use OpenCensus\Trace\Exporter\StackdriverExporter;
   use OpenCensus\Trace\Tracer;
   use OpenCensus\Trace\Integrations\Laravel;
   use OpenCensus\Trace\Integrations\Mysql;
   use OpenCensus\Trace\Integrations\PDO;
   
   class OpenCensusProvider extends ServiceProvider
   {
       public function boot()
       {
           if (php_sapi_name() == 'cli') {
               return;
           }
   
           // Enable OpenCensus extension integrations
           Laravel::load();
           Mysql::load();
           PDO::load();
   
           // Start the request tracing for this request
           $exporter = new StackdriverExporter();
           Tracer::start($exporter);
   
           // Create a span that starts from when Laravel first boots (public/index.php)
           Tracer::inSpan(['name' => 'bootstrap', 'startTime' => LARAVEL_START], function () {});
       }
   }

   In this example, we configured StackdriverExporter, but you can configure any exporter here. You can also enable any other integrations here.

2. Enable this ServiceProvider. In config/app.php:

   <?php
   // in the `providers` section
   ...
   'providers' => [
       ...
       App\Providers\OpenCensusProvider::class,
   ],
   ...