How to use Rollbar in Lumen

While working on a project, I was tasked to integrate Rollbar into it. The problem was that this was a Lumen project, and I didn’t find a package maintained for Lumen 5.7.

So I decided to look at the main Rollbar package for Laravel and see what that did. My idea was to try and replicate that in Lumen.

The Laravel package I looked at was jensseger/laravel-rollbar, which is very good, if you have a Laravel project. This package doesn’t really do much, it relies a lot on the basic rollbar package rollbar/rollbar.

So, first of all, you need rollbar/rollbar, so add it to your project with

composer require rollbar/rollbar

Note that this will also install monolog/monolog as a requirement. And because of that we can configure Rollbar as any other Laravel logging system: by a config file. This is my config/logging.php file:

<?php

return [
    'default' => env('LOG_CHANNEL', 'stack'),

    'channels' => [
        'stack' => [
            'driver' => 'stack',
            'channels' => ['rollbar'],
        ],
        'rollbar' => [
            'driver' => 'monolog',
            'handler' => Rollbar\Monolog\Handler\RollbarHandler::class,
            'access_token' => env('ROLLBAR_ACCESS_TOKEN'),
            'level' => 'debug',
        ],
    ],
];

The important part here is the rollbar channel, the rest is up to you, you don’t have to use the stack channel, by default or otherwise. The meaning of the configuration are explained in the rollbar/rollbar documentation.

DISCLAIMER: I haven’t tried all the possible configuration, so I cannot guarantee they would work. However, as these are simply passed onto the Rollbar package I don’t see why they shouldn’t work.

The main thing in the jensseger/laravel-rollbar package is its service provider. It’s quite exhaustive in the way it checks whether it’s safe to use Rollbar or how it can bypass configuration settings by checking the environment directly. But I don’t need all that, so my RollbarServiceProvider looks like this:

<?php

namespace App\Providers;

use Illuminate\Contracts\Config\Repository;
use Illuminate\Support\ServiceProvider;
use Rollbar\RollbarLogger;
use Rollbar\Rollbar;

class RollbarServiceProvider extends ServiceProvider
{
    public function register()
    {
        $this->app->singleton(RollbarLogger::class, function () {
            $config = $this->app->make(Repository::class);

            $defaults = [
                'environment' => app()->environment(),
                'root' => base_path(),
                'handle_exception' => true,
                'handle_error' => true,
                'handle_fatal' => true,
            ];

            $rollbarConfig = array_merge($defaults, $config->get('logging.channels.rollbar', []));

            $handleException = (bool)array_pull($rollbarConfig, 'handle_exception');
            $handleError = (bool)array_pull($rollbarConfig, 'handle_error');
            $handleFatal = (bool)array_pull($rollbarConfig, 'handle_fatal');

            Rollbar::init($rollbarConfig, $handleException, $handleError, $handleFatal);

            return Rollbar::logger();
        });
    }
}

It’s pretty much the same, but stripped down. Now, we need to configure it. First, add a new environment variable in your .env file called ROLLBAR_ACCESS_TOKEN. Not that its value should be the post_server_item type of access code from Rollbar.

Finally, now that we have all the pieces, we need to glue them together in the bootstrap/app.php file. So, add the following two line to it:

$app->register(\App\Providers\RollbarServiceProvider::class);
$app->configure('logging');

And there you have it: Rollbar integration in Lumen.