Introduce schema component

src/Schema/Request/SetLogLevelRequest.php

@@ -0,0 +1,61 @@
+<?php
+
+/*
+ * This file is part of the official PHP MCP SDK.
+ *
+ * A collaboration between Symfony and the PHP Foundation.
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Mcp\Schema\Request;
+
+use Mcp\Exception\InvalidArgumentException;
+use Mcp\Schema\Enum\LoggingLevel;
+use Mcp\Schema\JsonRpc\Request;
+
+/**
+ * A request from the client to the server, to enable or adjust logging.
+ *
+ * @author Kyrian Obikwelu <koshnawaza@gmail.com>
+ */
+class SetLogLevelRequest extends Request
+{
+    /**
+     * @param LoggingLevel          $level The level of logging that the client wants to receive from the server. The server
+     *                                     should send all logs at this level and higher (i.e., more severe) to the client as
+     *                                     notifications/message.
+     * @param ?array<string, mixed> $_meta optional metadata to include in the request
+     */
+    public function __construct(
+        string|int $id,
+        public readonly LoggingLevel $level,
+        public readonly ?array $_meta = null,
+    ) {
+        $params = [
+            'level' => $level->value,
+        ];
+
+        if (null !== $_meta) {
+            $params['_meta'] = $_meta;
+        }
+
+        parent::__construct($id, 'logging/setLevel', $params);
+    }
+
+    public static function fromRequest(Request $request): self
+    {
+        if ('logging/setLevel' !== $request->method) {
+            throw new InvalidArgumentException('Request is not a logging/setLevel request');
+        }
+
+        $params = $request->params;
+
+        if (!isset($params['level']) || !\is_string($params['level']) || empty($params['level'])) {
+            throw new InvalidArgumentException('Missing or invalid "level" parameter for logging/setLevel.');
+        }
+
+        return new self($request->id, LoggingLevel::from($params['level']), $params['_meta'] ?? null);
+    }
+}