Dev

README.md

@@ -20,3 +20,25 @@ FLUSH PRIVILEGES;
 kubectl exec -n cloudshopt -it deploy/product-service -c app -- sh
 # php artisan migrate
 ```
+
+## GraphQL (Lighthouse)
+
+This service exposes a GraphQL API (powered by Lighthouse) for querying product data.
+
+### Endpoint
+- `POST /api/products/graphql`
+
+### Schema
+```graphql
+type Product {
+  id: ID!
+  name: String!
+  description: String
+  price: Float!
+}
+
+type Query {
+  products: [Product!]! @all
+  product(id: ID! @whereKey): Product @find
+}
+```

app/Http/Controllers/MetricsController.php

@@ -0,0 +1,30 @@
+<?php
+
+namespace App\Http\Controllers;
+
+use Prometheus\CollectorRegistry;
+use Prometheus\RenderTextFormat;
+
+class MetricsController extends Controller
+{
+    public function __invoke()
+    {
+//        $token = env('METRICS_BEARER_TOKEN');
+//        if ($token) {
+//            $auth = request()->header('Authorization', '');
+//            if (!preg_match('/^Bearer\s+(.+)$/i', $auth, $m) || $m[1] !== $token) {
+//                return response()->json(['message' => 'Unauthorized'], 401);
+//            }
+//        }
+
+        $registry = app(CollectorRegistry::class);
+
+        $renderer = new RenderTextFormat();
+        $result = $renderer->render($registry->getMetricFamilySamples());
+
+        return response($result, 200, [
+            'Content-Type' => RenderTextFormat::MIME_TYPE,
+            'Cache-Control' => 'no-store',
+        ]);
+    }
+}

app/Http/Middleware/PrometheusMetrics.php

@@ -0,0 +1,52 @@
+<?php
+
+namespace App\Http\Middleware;
+
+use Closure;
+use Illuminate\Http\Request;
+use Prometheus\CollectorRegistry;
+
+class PrometheusMetrics
+{
+    public function handle(Request $request, Closure $next)
+    {
+        $start = microtime(true);
+
+        $response = $next($request);
+
+        $duration = microtime(true) - $start;
+
+        $route = $request->route();
+        $routeLabel = $route?->getName()
+            ?? $route?->uri()
+            ?? 'unknown';
+
+        $method = $request->method();
+        $status = (string) $response->getStatusCode();
+        $service = config('app.name', 'service');
+
+        $registry = app(CollectorRegistry::class);
+
+        // Counter: request count
+        $counter = $registry->getOrRegisterCounter(
+            'cloudshopt',
+            'http_requests_total',
+            'Total HTTP requests',
+            ['service', 'method', 'route', 'status']
+        );
+        $counter->inc([$service, $method, $routeLabel, $status]);
+
+        // Histogram: request latency
+        $hist = $registry->getOrRegisterHistogram(
+            'cloudshopt',
+            'http_request_duration_seconds',
+            'HTTP request duration in seconds',
+            ['service', 'method', 'route', 'status'],
+            // buckets (sekunde)
+            [0.01, 0.025, 0.05, 0.1, 0.25, 0.5, 1, 2.5, 5]
+        );
+        $hist->observe($duration, [$service, $method, $routeLabel, $status]);
+
+        return $response;
+    }
+}

app/Providers/AppServiceProvider.php

@@ -3,20 +3,29 @@
 namespace App\Providers;
 
 use Illuminate\Support\ServiceProvider;
+use Prometheus\CollectorRegistry;
+use Prometheus\Storage\Redis;
 
 class AppServiceProvider extends ServiceProvider
 {
-    /**
-     * Register any application services.
-     */
     public function register(): void
     {
-        //
+        Redis::setDefaultOptions([
+            'host' => env('REDIS_HOST'),
+            'port' => (int) env('REDIS_PORT', 6379),
+            'password' => env('REDIS_PASSWORD') ?: null,
+            'timeout' => 0.1,
+            'read_timeout' => 10,
+            'persistent_connections' => true,
+            'prefix' => config('app.name', 'service') . '_' . gethostname(),
+        ]);
+
+
+        $this->app->singleton(CollectorRegistry::class, function () {
+            return new CollectorRegistry(new Redis());
+        });
     }
 
-    /**
-     * Bootstrap any application services.
-     */
     public function boot(): void
     {
         //

bootstrap/app.php

@@ -1,5 +1,6 @@
 <?php
 
+use App\Http\Middleware\PrometheusMetrics;
 use Illuminate\Foundation\Application;
 use Illuminate\Foundation\Configuration\Exceptions;
 use Illuminate\Foundation\Configuration\Middleware;
@@ -12,7 +13,7 @@
         health: '/up',
     )
     ->withMiddleware(function (Middleware $middleware): void {
-        //
+        $middleware->append(PrometheusMetrics::class);
     })
     ->withExceptions(function (Exceptions $exceptions): void {
         //

composer.json

@@ -9,7 +9,8 @@
         "php": "^8.2",
         "laravel/framework": "^12.0",
         "laravel/tinker": "^2.10.1",
-        "nuwave/lighthouse": "^6.64"
+        "nuwave/lighthouse": "^6.64",
+        "promphp/prometheus_client_php": "^2.14"
     },
     "require-dev": {
         "fakerphp/faker": "^1.23",

routes/api.php

@@ -53,4 +53,4 @@
 });
 
 Route::get('/items', [ProductController::class, 'index']);
-Route::get('/items/{id}', [ProductController::class, 'show']);
+Route::get('/items/{id}', [ProductController::class, 'show']);

routes/web.php

@@ -1,5 +1,8 @@
 <?php
 
+use App\Http\Controllers\MetricsController;
 use Illuminate\Support\Facades\Route;
 
 Route::get('/healthz', fn () => response('ok', 200));
+
+Route::get('/metrics', MetricsController::class);