Use the HTTP 423 Locked status

Author: GrahamCampbell

composer.json

@@ -36,7 +36,7 @@
     },
     "extra": {
         "branch-alias": {
-            "dev-master": "4.3-dev"
+            "dev-master": "5.0-dev"
         },
         "laravel": {
             "providers": [

src/Http/Exception/LockedHttpException.php

@@ -0,0 +1,40 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of Alt Three Locker.
+ *
+ * (c) Alt Three Services Limited
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace AltThree\Locker\Http\Exception;
+
+use Symfony\Component\HttpKernel\Exception\HttpException;
+use Throwable;
+
+/**
+ * This is the locked http exception class.
+ *
+ * @author Graham Campbell <[email protected]>
+ */
+class LockedHttpException extends HttpException
+{
+    /**
+     * Create a new locked http exception instance.
+     *
+     * @param string|null     $message
+     * @param \Throwable|null $previous
+     * @param int             $code
+     * @param array           $headers
+     *
+     * @return void
+     */
+    public function __construct(string $message = null, Throwable $previous = null, int $code = 0, array $headers = [])
+    {
+        parent::__construct(423, $message, $previous, $headers, $code);
+    }
+}

src/Http/Middleware/LockingMiddleware.php

@@ -14,10 +14,10 @@
 namespace AltThree\Locker\Http\Middleware;
 
 use AltThree\Locker\Exceptions\UnableToAcquireLockException;
+use AltThree\Locker\Http\Exception\LockedHttpException;
 use AltThree\Locker\Locker;
 use Closure;
 use Illuminate\Http\Request;
-use Symfony\Component\HttpKernel\Exception\UnprocessableEntityHttpException;
 
 /**
  * This is the locking middleware class.
@@ -58,7 +58,7 @@ public function __construct(Locker $locker)
      * @param \Illuminate\Http\Request $request
      * @param \Closure                 $next
      *
-     * @throws \Symfony\Component\HttpKernel\Exception\UnprocessableEntityHttpException
+     * @throws \AltThree\Locker\Http\Exception\LockedHttpException
      *
      * @return mixed
      */
@@ -77,7 +77,7 @@ public function handle(Request $request, Closure $next)
         try {
             $response = $this->locker->execute($function, $name, 20000);
         } catch (UnableToAcquireLockException $e) {
-            throw new UnprocessableEntityHttpException('Unable to acquire lock.', $e, $e->getCode());
+            throw new LockedHttpException('Unable to acquire lock.', $e, $e->getCode());
         }
 
         return $response;