f1b471a219* feat(server): add bidirectional client communication support * fix(server): use correct session ID string conversion method * fix: clean up docblocks for request handler methods in Builder * fix: merge artifacts
73 lines
2.3 KiB
PHP
73 lines
2.3 KiB
PHP
<?php
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/*
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* This file is part of the official PHP MCP SDK.
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*
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* A collaboration between Symfony and the PHP Foundation.
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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namespace Mcp\Example\CustomMethodHandlers;
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use Mcp\Schema\Content\TextContent;
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use Mcp\Schema\JsonRpc\Error;
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use Mcp\Schema\JsonRpc\Request;
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use Mcp\Schema\JsonRpc\Response;
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use Mcp\Schema\Request\CallToolRequest;
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use Mcp\Schema\Result\CallToolResult;
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use Mcp\Schema\Tool;
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use Mcp\Server\Handler\Request\RequestHandlerInterface;
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use Mcp\Server\Session\SessionInterface;
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/** @implements RequestHandlerInterface<CallToolResult> */
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class CallToolRequestHandler implements RequestHandlerInterface
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{
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/**
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* @param array<string, Tool> $toolDefinitions
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*/
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public function __construct(private array $toolDefinitions)
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{
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}
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public function supports(Request $request): bool
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{
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return $request instanceof CallToolRequest;
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}
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/**
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* @return Response<CallToolResult>|Error
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*/
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public function handle(Request $request, SessionInterface $session): Response|Error
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{
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\assert($request instanceof CallToolRequest);
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$name = $request->name;
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$args = $request->arguments ?? [];
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if (!isset($this->toolDefinitions[$name])) {
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return new Error($request->getId(), Error::METHOD_NOT_FOUND, \sprintf('Tool not found: %s', $name));
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}
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try {
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switch ($name) {
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case 'say_hello':
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$greetName = (string) ($args['name'] ?? 'world');
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$result = [new TextContent(\sprintf('Hello, %s!', $greetName))];
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break;
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case 'sum':
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$a = (float) ($args['a'] ?? 0);
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$b = (float) ($args['b'] ?? 0);
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$result = [new TextContent((string) ($a + $b))];
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break;
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default:
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$result = [new TextContent('Unknown tool')];
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}
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return new Response($request->getId(), new CallToolResult($result));
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} catch (\Throwable $e) {
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return new Response($request->getId(), new CallToolResult([new TextContent('Tool execution failed')], true));
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}
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}
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}
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