File Server/Exception/SubscriptionLimitReachedException.php

1:	<?php
2:
3:	declare(strict_types=1);
4:
5:	/**
6:	* This file is part of the Nexus MCP SDK package.
7:	*
8:	* (c) 2026 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\Server\Exception;
15:
16:	use Nexus\Mcp\Core\Exception\AbstractJsonRpcProtocolException;
17:	use Nexus\Mcp\Core\Schema\Enum\ProtocolErrorCode;
18:	use Nexus\Mcp\Core\Schema\RequestId;
19:
20:	/**
21:	* Thrown when a `subscriptions/listen` asks for more than one of the store's budgets allows.
22:	*/
23:	final class SubscriptionLimitReachedException extends AbstractJsonRpcProtocolException
24:	{
25:	/**
26:	* @param bool $perPeer Whether the per-peer budget refused the stream, rather than the server-wide one
27:	* @param bool $perStream Whether the stream named more resource URIs than one may watch
28:	*/
29:	public function __construct(
30:	public readonly int $limit,
31:	?RequestId $requestId = null,
32:	?\Throwable $previous = null,
33:	bool $perPeer = false,
34:	bool $perStream = false,
35:	) {
36:	parent::__construct(
37:	$requestId,
38:	$perStream
39:	? \sprintf('Subscription limit reached: this server watches at most %d resource URIs per stream.', $limit)
40:	: \sprintf(
41:	'Subscription limit reached: this server holds at most %d open streams%s.',
42:	$limit,
43:	$perPeer ? ' per client' : '',
44:	),
45:	$previous,
46:	errorData: ['limit' => $limit],
47:	);
48:	}
49:
50:	#[\Override]
51:	public static function getErrorCode(): ProtocolErrorCode
52:	{
53:	return ProtocolErrorCode::InternalError;
54:	}
55:	}
56:

Namespaces

Exceptions