添加webhook路由中间件

src/Middleware/CheckWebhookMiddleware.php

+<?php
+/**
+ * Created by PhpStorm.
+ * User: Zero
+ * Date: 2020/8/24
+ * Time: 9:33
+ */
+
+namespace Meibuyu\Micro\Middleware;
+
+use Psr\Http\Message\ResponseInterface;
+use Psr\Http\Message\ServerRequestInterface;
+use Psr\Http\Server\MiddlewareInterface;
+use Psr\Http\Server\RequestHandlerInterface;
+
+class CheckWebhookMiddleware implements MiddlewareInterface
+{
+
+    /**
+     * @inheritDoc
+     */
+    public function process(ServerRequestInterface $request, RequestHandlerInterface $handler): ResponseInterface
+    {
+        $domain = $request->getHeader('x-shopify-shop-domain')[0] ?? null;
+        $topic = $request->getHeader('x-shopify-topic')[0] ?? null;
+        if ($domain && $topic) {
+            return $handler->handle($request);
+        } else {
+            return response()->withStatus(500);
+        }
+    }
+
+}