313 lines
9.1 KiB
PHP
313 lines
9.1 KiB
PHP
<?php
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namespace app\api\controller\mcp;
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class Mcp extends Base
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{
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// 工具定义常量
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private const ADD_FUNCTION = [
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[
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'name' => 'add',
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'description' => "计算两个数字的和",
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'inputSchema' => [
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'type' => 'object',
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'properties' => [
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'a' => [
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'description' => '第一个加数（必填）',
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'example' => 10,
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'type' => 'number',
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],
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'b' => [
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'description' => '第二个加数（必填）',
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'example' => 20,
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'type' => 'number',
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]
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]
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]
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],
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[
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'name' => 'sub',
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'description' => "计算两个数字的减法",
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'inputSchema' => [
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'type' => 'object',
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'properties' => [
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'a' => [
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'description' => '第一个减数（必填）',
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'example' => 10,
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'type' => 'number',
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],
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'b' => [
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'description' => '第二个减数（必填）',
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'example' => 20,
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'type' => 'number',
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]
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]
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]
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],
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];
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public function sse()
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{
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// 设置 CORS 头
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header('Access-Control-Allow-Origin: *');
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header('Access-Control-Allow-Methods: POST, OPTIONS');
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header('Access-Control-Allow-Headers: Content-Type, Authorization');
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// 处理 OPTIONS 预检请求
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if ($_SERVER['REQUEST_METHOD'] === 'OPTIONS') {
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http_response_code(200);
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exit;
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}
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// 设置 SSE 响应头
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header('Content-Type: text/event-stream');
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header('Cache-Control: no-cache');
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header('Connection: keep-alive');
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header('X-Accel-Buffering: no');
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// 获取原始输入
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$input = file_get_contents('php://input');
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file_put_contents('mcp_debug.log', date('Y-m-d H:i:s').' Raw input: '.$input.PHP_EOL, FILE_APPEND);
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// 解析 JSON-RPC 请求
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$request = json_decode($input, true);
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// 处理请求
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if (isset($request['method'])) {
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switch($request['method']) {
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case 'initialize':
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$this->handleInitializeRequest($request);
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break;
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case 'function':
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case 'tools/call': // 新增支持tools/call方法
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$this->handleFunctionRequest($request);
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break;
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case 'ping':
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$this->sendJsonRpcResponse($request['id'] ?? null, ['result' => 'pong']);
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break;
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case 'notifications/initialized':
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$this->sendJsonRpcResponse($request['id'] ?? null, ['result' => 'success']);
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break;
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case 'tools/list':
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$this->sendJsonRpcResponse($request['id'] ?? null, ['tools' => self::ADD_FUNCTION]);
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break;
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default:
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$this->handleOtherRequests($request);
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}
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} else {
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$this->handleOtherRequests($request);
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}
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}
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/**
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* 处理初始化请求
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*/
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private function handleInitializeRequest($request)
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{
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$id = $request['id'] ?? null;
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// 记录完整的初始化请求内容
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file_put_contents('mcp_debug.log', "Received initialize request: " . json_encode($request) . PHP_EOL, FILE_APPEND);
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// 发送初始化响应
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$this->sendJsonRpcResponse($id, [
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'capabilities' => [
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'progress' => true,
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'functions' => self::ADD_FUNCTION
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],
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'serverInfo' => [
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'name' => 'Calculator Server',
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'version' => '1.0.0',
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'vendor' => 'MyCompany',
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'license' => 'MIT'
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],
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'protocolVersion' => '2025-03-26'
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]);
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}
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/**
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* 处理函数调用请求
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*/
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public function handleFunctionRequest($request)
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{
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$id = $request['id'] ?? null;
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$function = $request['params']['function'] ?? '';
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$arguments = $request['params']['arguments'] ?? [];
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// // 恢复函数名验证
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// if ($function !== 'add') {
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// $this->sendJsonRpcResponse($id, [
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// 'error' => [
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// 'code' => -32601,
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// 'message' => 'Unsupported function',
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// 'data' => "Function not found: $function"
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// ]
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// ]);
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// return;
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// }
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// // 提取参数验证为独立方法
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// $validationResult = $this->validateAddParameters($arguments, $id);
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// if ($validationResult !== true) {
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// $this->sendJsonRpcResponse($id, $validationResult);
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// return;
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// }
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// 解构参数
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$a = $arguments['a'] ?? 0;
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$b = $arguments['b'] ?? 0;
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// 发送进度通知
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$this->sendNotification('progress', ['id' => $id, 'message' => '正在计算...']);
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// 模拟处理延迟
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sleep(1);
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$result = $this->calculateAdd($a, $b);
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$this->sendJsonRpcResponse($id, [
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// '' => [
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'operation' => 'add',
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'result' => $result,
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'expression' => "$a + $b = $result",
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'timestamp' => time()
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// ]
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]);
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}
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/**
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* 验证加法参数
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* @param array $arguments
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* @param mixed $id
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* @return array|bool 返回true表示验证通过，否则返回错误响应数组
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*/
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private function validateAddParameters(array $arguments, $id)
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{
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if (!isset($arguments['a'], $arguments['b'])) {
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return [
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'error' => [
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'code' => -32602,
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'message' => 'Invalid params',
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'data' => 'Missing required parameters: a and b'
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]
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];
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}
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if (!is_numeric($arguments['a']) || !is_numeric($arguments['b'])) {
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return [
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'error' => [
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'code' => -32602,
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'message' => 'Invalid params',
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'data' => 'Parameters must be numbers'
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]
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];
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}
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return true;
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}
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/**
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* 处理其他类型的请求
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*/
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private function handleOtherRequests($request)
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{
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if (!$request || !isset($request['function'])) {
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$this->sendJsonRpcResponse($request['id'] ?? null, ['error' => 'Invalid request format']);
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return;
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}
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if ($request['function'] === 'add' || $request['function'] === 'tools/call') {
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$a = $request['params']['a'] ?? 0;
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$b = $request['params']['b'] ?? 0;
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if (!is_numeric($a) || !is_numeric($b)) {
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$this->sendEvent('error', 'Parameters must be numbers');
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return;
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}
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// 模拟处理延迟
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sleep(1);
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$result = $this->calculateAdd($a, $b);
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$this->sendEvent('result', [
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'operation' => 'add',
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'result' => $result,
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'expression' => "$a + $b = $result"
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]);
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} else {
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$this->sendEvent('error', 'Unsupported function: ' . $request['function']);
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}
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}
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/**
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* 执行加法计算
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*/
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private function calculateAdd(float $a, float $b): float
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{
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return $a + $b;
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}
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/**
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* 发送 JSON-RPC 响应
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*/
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private function sendJsonRpcResponse($id, $resultOrError)
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{
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$response = [
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'jsonrpc' => '2.0',
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'id' => $id
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];
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if (isset($resultOrError['error'])) {
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$response['error'] = $resultOrError['error'];
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} else {
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$response['result'] = $resultOrError;
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}
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$this->sendStreamData(json_encode($response, JSON_UNESCAPED_UNICODE));
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}
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/**
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* 发送通知（用于进度更新等）
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*/
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private function sendNotification($method, $params)
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{
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$notification = [
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'jsonrpc' => '2.0',
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'method' => $method,
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'params' => $params
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];
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$this->sendStreamData(json_encode($notification, JSON_UNESCAPED_UNICODE));
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}
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/**
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* 发送标准 SSE 事件
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*/
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private function sendEvent($type, $data)
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{
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$jsonData = json_encode($data, JSON_UNESCAPED_UNICODE);
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echo "event: $type\n";
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echo "data: $jsonData\n\n";
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$this->flushBuffers();
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file_put_contents('mcp_debug.log', "Sent event: $type - $jsonData".PHP_EOL, FILE_APPEND);
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}
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/**
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* 发送流数据
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*/
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private function sendStreamData(string $data)
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{
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echo "data: $data\n\n";
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$this->flushBuffers();
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file_put_contents('mcp_debug.log', "JSON-RPC Response: $data".PHP_EOL, FILE_APPEND);
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}
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/**
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* 刷新输出缓冲区
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*/
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private function flushBuffers()
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{
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ob_flush();
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flush();
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}
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} |