Add opcache inspector controller (#147)

* Add opcache page

* Check if opcache is enabled

* Skip optional dependency

* Fix return value

* Fix return value

* Skip optional dependency

* Check if class exists

* Suppress psalm

* Fix psalm

composer-require-checker.json

@@ -26,7 +26,10 @@
         "Yiisoft\\Db\\Connection\\ConnectionInterface",
         "Yiisoft\\Db\\Query\\Query",
         "Yiisoft\\Yii\\Debug\\Collector\\RequestCollector",
+        "Yiisoft\\Yii\\Http\\Application",
         "posix_getgrgid",
-        "posix_getpwuid"
+        "posix_getpwuid",
+        "opcache_get_status",
+        "opcache_get_configuration"
     ]
 }

config/routes.php

@@ -15,6 +15,7 @@
 use Yiisoft\Yii\Debug\Api\Inspector\Controller\ComposerController;
 use Yiisoft\Yii\Debug\Api\Inspector\Controller\GitController;
 use Yiisoft\Yii\Debug\Api\Inspector\Controller\InspectController;
+use Yiisoft\Yii\Debug\Api\Inspector\Controller\OpcacheController;
 use Yiisoft\Yii\Middleware\CorsAllowAll;
 use Yiisoft\Yii\Middleware\IpFilter;
 
@@ -171,5 +172,12 @@ static function (ResponseFactoryInterface $responseFactory, ValidatorInterface $
                         ->action([CacheController::class, 'clear'])
                         ->name('/clear'),
                 ),
+            Group::create('/opcache')
+                ->namePrefix('opcache')
+                ->routes(
+                    Route::get('[/]')
+                        ->action([OpcacheController::class, 'index'])
+                        ->name('/index'),
+                ),
         ),
 ];

src/Debug/Http/HttpApplicationWrapper.php

@@ -17,20 +17,25 @@ public function __construct(
     ) {
     }
 
+    /**
+     * @psalm-suppress UndefinedClass
+     */
     public function wrap(Application $application): void
     {
         $middlewareDispatcher = $this->middlewareDispatcher;
         $middlewareDefinitions = $this->middlewareDefinitions;
 
-        $closure = Closure::bind(static function (Application $application) use (
-            $middlewareDispatcher,
-            $middlewareDefinitions,
-        ) {
-            $application->dispatcher = $middlewareDispatcher->withMiddlewares([
+        $closure = Closure::bind(
+            /**
+             * @psalm-suppress UndefinedClass
+             */
+            static fn (Application $application) => $application->dispatcher = $middlewareDispatcher->withMiddlewares([
                 ...$middlewareDefinitions,
                 ['class' => MiddlewareDispatcherMiddleware::class, '$middlewareDispatcher' => $application->dispatcher],
-            ]);
-        }, null, $application);
+            ]),
+            null,
+            $application
+        );
 
         $closure($application);
     }

src/Debug/Provider/DebugApiProvider.php

@@ -21,9 +21,12 @@ public function getDefinitions(): array
         return [];
     }
 
+    /**
+     * @psalm-suppress UndefinedClass
+     */
     public function getExtensions(): array
     {
-        return [
+        $extensions = [
             RouteCollectorInterface::class => static function (
                 ContainerInterface $container,
                 RouteCollectorInterface $routeCollector
@@ -36,12 +39,18 @@ public function getExtensions(): array
 
                 return $routeCollector;
             },
-            Application::class => static function (ContainerInterface $container, Application $application) {
+        ];
+        if (class_exists(Application::class)) {
+            $extensions[Application::class] = static function (
+                ContainerInterface $container,
+                Application $application
+            ): Application {
                 $applicationWrapper = $container->get(HttpApplicationWrapper::class);
                 $applicationWrapper->wrap($application);
 
                 return $application;
-            },
-        ];
+            };
+        }
+        return $extensions;
     }
 }

src/Inspector/Controller/OpcacheController.php

@@ -0,0 +1,31 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Yiisoft\Yii\Debug\Api\Inspector\Controller;
+
+use Psr\Http\Message\ResponseInterface;
+use Yiisoft\DataResponse\DataResponseFactoryInterface;
+use Yiisoft\Http\Status;
+
+final class OpcacheController
+{
+    public function __construct(
+        private DataResponseFactoryInterface $responseFactory,
+    ) {
+    }
+
+    public function index(): ResponseInterface
+    {
+        if (!\function_exists('opcache_get_status') || ($status = \opcache_get_status(true)) === false) {
+            return $this->responseFactory->createResponse([
+                'message' => 'OPcache is not installed or configured',
+            ], Status::UNPROCESSABLE_ENTITY);
+        }
+
+        return $this->responseFactory->createResponse([
+            'status' => $status,
+            'configuration' => \opcache_get_configuration(),
+        ]);
+    }
+}

src/ServerSentEventsStream.php

@@ -27,9 +27,9 @@ public function detach(): void
         $this->eof = true;
     }
 
-    public function getSize()
+    public function getSize(): int
     {
-        return null;
+        return 0;
     }
 
     public function tell(): int
@@ -62,7 +62,7 @@ public function isWritable(): bool
         return false;
     }
 
-    public function write($string): void
+    public function write($string): int
     {
         throw new \RuntimeException('Stream is not writable');
     }