1: <?php
2:
3: declare(strict_types=1);
4:
5: /**
6: * This file is part of the Nexus MCP SDK package.
7: *
8: * (c) 2025 John Paul E. Balandan, CPA <paulbalandan@gmail.com>
9: *
10: * For the full copyright and license information, please view
11: * the LICENSE file that was distributed with this source code.
12: */
13:
14: namespace Nexus\Mcp\Schema\Request;
15:
16: use Nexus\Mcp\Schema\Message\JsonRpcRequest;
17: use Nexus\Mcp\Schema\Message\RequestId;
18:
19: /**
20: * Sent from the client to request `resources/updated` notifications from the server
21: * whenever a particular resource changes.
22: *
23: * @extends JsonRpcRequest<array{
24: * jsonrpc: '2.0',
25: * id: int|non-empty-string,
26: * method: 'resources/subscribe',
27: * params: array{
28: * _meta?: array<string, mixed>,
29: * uri: non-empty-string,
30: * },
31: * }>
32: */
33: final readonly class SubscribeRequest extends JsonRpcRequest implements ClientRequest
34: {
35: /**
36: * @param non-empty-string $uri The URI of the resource to subscribe to. The URI can use any protocol;
37: * it is up to the server how to interpret it.
38: * @param null|array<string, mixed> $meta Reserved by MCP to allow clients and servers to attach
39: * additional metadata to their interactions.
40: */
41: public function __construct(RequestId $id, string $uri, ?array $meta = null)
42: {
43: parent::__construct(self::JSON_RPC_VERSION, $id, 'resources/subscribe', array_filter([
44: '_meta' => $meta,
45: 'uri' => $uri,
46: ], static fn(mixed $value): bool => null !== $value));
47: }
48: }
49: