Lumen support #17

README.md

@@ -18,6 +18,8 @@ composer require superbalist/laravel-prometheus-exporter
 ```
 
 Register the service provider in app.php
+
+#### Laravel
 ```php
 'providers' => [
     // ...
@@ -33,6 +35,11 @@ Register the facade in app.php
 ]
 ```
 
+#### Lumen
+```php
+$app->register(Superbalist\LaravelPrometheusExporter\LumenPrometheusServiceProvider::class);
+```
+
 ## Configuration
 
 The package has a default configuration which uses the following environment variables.

composer.json

@@ -10,8 +10,8 @@
   ],
   "require": {
     "php": ">=5.6.0",
-    "illuminate/support": "^5.3 || ^6.0 || ^7.0",
-    "illuminate/routing": "^5.3 || ^6.0 || ^7.0",
+    "illuminate/support": "^5.3 || ^6.0 || ^7.0 || ^8.0",
+    "illuminate/routing": "^5.3 || ^6.0 || ^7.0 || ^8.0",
     "jimdo/prometheus_client_php": "^0.9.0"
   },
   "autoload": {

src/LumenPrometheusServiceProvider.php

@@ -0,0 +1,25 @@
+<?php
+
+namespace Superbalist\LaravelPrometheusExporter;
+
+class LumenPrometheusServiceProvider extends PrometheusServiceProvider
+{
+    /**
+     * Publish files.
+     */
+    protected function publishFiles()
+    {
+        // do nothing
+    }
+
+    /**
+     * Load routes.
+     */
+    protected function loadRoutes()
+    {
+        $this->app->router
+            ->group(['namespace' => 'Superbalist\LaravelPrometheusExporter'], function ($router) {
+                require __DIR__ . '/lumen_routes.php';
+            });
+    }
+}

src/MetricsController.php

@@ -2,40 +2,25 @@
 
 namespace Superbalist\LaravelPrometheusExporter;
 
-use Illuminate\Contracts\Routing\ResponseFactory;
+use Illuminate\Http\Response;
 use Illuminate\Routing\Controller;
 use Prometheus\RenderTextFormat;
 
 class MetricsController extends Controller
 {
-    /**
-     * @var ResponseFactory
-     */
-    protected $responseFactory;
-
     /**
      * @var PrometheusExporter
      */
     protected $prometheusExporter;
 
     /**
-     * @param ResponseFactory $responseFactory
      * @param PrometheusExporter $prometheusExporter
      */
-    public function __construct(ResponseFactory $responseFactory, PrometheusExporter $prometheusExporter)
+    public function __construct(PrometheusExporter $prometheusExporter)
     {
-        $this->responseFactory = $responseFactory;
         $this->prometheusExporter = $prometheusExporter;
     }
 
-    /**
-     * @return ResponseFactory
-     */
-    public function getResponseFactory()
-    {
-        return $this->responseFactory;
-    }
-
     /**
      * @return PrometheusExporter
      */
@@ -59,6 +44,6 @@ public function getMetrics()
         $renderer = new RenderTextFormat();
         $result = $renderer->render($metrics);
 
-        return $this->responseFactory->make($result, 200, ['Content-Type' => RenderTextFormat::MIME_TYPE]);
+        return Response::create($result, 200, ['Content-Type' => RenderTextFormat::MIME_TYPE]);
     }
 }

src/PrometheusServiceProvider.php

@@ -14,12 +14,11 @@ class PrometheusServiceProvider extends ServiceProvider
      */
     public function boot()
     {
-        $this->publishes([
-            __DIR__ . '/../config/prometheus.php' => config_path('prometheus.php'),
-        ]);
+        $this->publishFiles();
+        $this->loadRoutes();
 
         if (config('prometheus.metrics_route_enabled')) {
-            $this->loadRoutesFrom(__DIR__ . '/routes.php');
+            $this->loadRoutes();
         }
 
         $exporter = $this->app->make(PrometheusExporter::class); /* @var PrometheusExporter $exporter */
@@ -29,6 +28,24 @@ public function boot()
         }
     }
 
+    /**
+     * Publish files.
+     */
+    protected function publishFiles()
+    {
+        $this->publishes([
+            __DIR__ . '/../config/prometheus.php' => config_path('prometheus.php'),
+        ]);
+    }
+
+    /**
+     * Load routes.
+     */
+    protected function loadRoutes()
+    {
+        $this->loadRoutesFrom(__DIR__ . '/laravel_routes.php');
+    }
+
     /**
      * Register bindings in the container.
      */

src/laravel_routes.php

@@ -0,0 +1,7 @@
+<?php
+
+Route::get(config('prometheus.metrics_route_path'), [
+    'as' => config('prometheus.metrics_route_name'),
+    'middleware' => config('prometheus.metrics_route_middleware'),
+    'uses' => \Superbalist\LaravelPrometheusExporter\MetricsController::class . '@getMetrics',
+]);

src/lumen_routes.php

@@ -0,0 +1,7 @@
+<?php
+
+$router->get(config('prometheus.metrics_route_path'), [
+    'as' => config('prometheus.metrics_route_name'),
+    'middleware' => config('prometheus.metrics_route_middleware'),
+    'uses' => 'MetricsController@getMetrics'
+]);

tests/MetricsControllerTest.php

@@ -2,8 +2,6 @@
 
 namespace Tests;
 
-use Illuminate\Contracts\Routing\ResponseFactory;
-use Illuminate\Http\Response;
 use Mockery;
 use PHPUnit\Framework\TestCase;
 use Prometheus\RenderTextFormat;
@@ -14,35 +12,22 @@ class MetricsControllerTest extends TestCase
 {
     public function testConstruct()
     {
-        $responseFactory = Mockery::mock(ResponseFactory::class);
         $exporter = Mockery::mock(PrometheusExporter::class);
-        $controller = new MetricsController($responseFactory, $exporter);
-        $this->assertSame($responseFactory, $controller->getResponseFactory());
+        $controller = new MetricsController($exporter);
         $this->assertSame($exporter, $controller->getPrometheusExporter());
     }
 
     public function testGetMetrics()
     {
-        $response = Mockery::mock(Response::class);
-
-        $responseFactory = Mockery::mock(ResponseFactory::class);
-        $responseFactory->shouldReceive('make')
-            ->once()
-            ->withArgs([
-                "\n",
-                200,
-                ['Content-Type' => RenderTextFormat::MIME_TYPE],
-            ])
-            ->andReturn($response);
-
         $exporter = Mockery::mock(PrometheusExporter::class);
         $exporter->shouldReceive('export')
             ->once()
             ->andReturn([]);
 
-        $controller = new MetricsController($responseFactory, $exporter);
+        $controller = new MetricsController($exporter);
 
-        $r = $controller->getMetrics();
-        $this->assertSame($response, $r);
+        $response = $controller->getMetrics();
+        $this->assertSame(200, $response->getStatusCode());
+        $this->assertSame(RenderTextFormat::MIME_TYPE, $response->headers->get('Content-Type'));
     }
 }