Add enabled check to register() method to prevent service registration when disabled

Co-authored-by: overtrue <[email protected]>

Author: Copilot

src/OpenTelemetryServiceProvider.php

@@ -46,6 +46,11 @@ public function register(): void
             __DIR__.'/../config/otel.php', 'otel',
         );
 
+        // Check if OpenTelemetry is enabled
+        if (! config('otel.enabled', true)) {
+            return;
+        }
+
         // Register Tracer
         $this->app->singleton(Support\Measure::class, function ($app) {
             return new Support\Measure($app);

tests/OpenTelemetryServiceProviderTest.php

@@ -133,6 +133,47 @@ public function test_provider_logs_startup_and_registration()
         $this->assertTrue(true); // Mockery will fail if expectation not met
     }
 
+    public function test_provider_does_not_register_services_when_disabled()
+    {
+        // Create a fresh Laravel application WITHOUT auto-loading our package provider
+        $app = new \Illuminate\Foundation\Application(
+            realpath(__DIR__.'/../')
+        );
+
+        $app->singleton(
+            \Illuminate\Contracts\Http\Kernel::class,
+            \Illuminate\Foundation\Http\Kernel::class
+        );
+
+        $app->singleton(
+            \Illuminate\Contracts\Console\Kernel::class,
+            \Illuminate\Foundation\Console\Kernel::class
+        );
+
+        $app->singleton(
+            \Illuminate\Contracts\Debug\ExceptionHandler::class,
+            \Illuminate\Foundation\Exceptions\Handler::class
+        );
+
+        // Set config with enabled = false
+        $app['config'] = new \Illuminate\Config\Repository([
+            'otel' => array_merge(
+                include __DIR__.'/../config/otel.php',
+                ['enabled' => false]
+            ),
+        ]);
+
+        // Create and register service provider
+        $provider = new OpenTelemetryServiceProvider($app);
+        $provider->register();
+
+        // Verify services are NOT bound when disabled
+        $this->assertFalse($app->bound(Measure::class));
+        $this->assertFalse($app->bound(\OpenTelemetry\API\Trace\TracerInterface::class));
+        $this->assertFalse($app->bound(\OpenTelemetry\API\Metrics\MeterInterface::class));
+        $this->assertFalse($app->bound(\Overtrue\LaravelOpenTelemetry\Support\Metric::class));
+    }
+
     public function test_tracer_provider_is_initialized()
     {
         // 获取全局 TracerProvider