File Extension/Tasks/Server/Handler/GetTaskRequestHandler.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\Extension\Tasks\Server\Handler;
15:
16:	use Nexus\Mcp\Core\Exception\InvalidParamsException;
17:	use Nexus\Mcp\Core\Handler\AbstractContext;
18:	use Nexus\Mcp\Core\Handler\RequestHandlerInterface;
19:	use Nexus\Mcp\Core\Schema\JsonRpc\JsonRpcRequest;
20:	use Nexus\Mcp\Extension\Tasks\Schema\Request\GetTaskRequest;
21:	use Nexus\Mcp\Extension\Tasks\Schema\Result\GetTaskResult;
22:	use Nexus\Mcp\Extension\Tasks\Server\Store\TaskStoreInterface;
23:	use Nexus\Mcp\Server\ServerContext;
24:
25:	/**
26:	* Handles the `tasks/get` request by delegating to a `TaskStoreInterface`.
27:	*
28:	* @implements RequestHandlerInterface<'tasks/get', GetTaskResult, ServerContext>
29:	*/
30:	final readonly class GetTaskRequestHandler implements RequestHandlerInterface
31:	{
32:	public function __construct(private TaskStoreInterface $store)
33:	{
34:	}
35:
36:	#[\Override]
37:	public function handle(JsonRpcRequest $request, AbstractContext $context): GetTaskResult
38:	{
39:	\assert($request instanceof GetTaskRequest);
40:
41:	$record = $this->store->findTask($request->params->taskId);
42:
43:	if (null === $record) {
44:	throw new InvalidParamsException($context->requestId, '"params.taskId" does not name a known task.');
45:	}
46:
47:	return new GetTaskResult(
48:	taskId: $record->taskId,
49:	status: $record->status,
50:	createdAt: $record->createdAt,
51:	lastUpdatedAt: $record->lastUpdatedAt,
52:	ttlMs: $record->ttlMs,
53:	result: $record->result,
54:	error: $record->error,
55:	inputRequests: $record->pendingInputRequests,
56:	statusMessage: $record->statusMessage,
57:	pollIntervalMs: $record->pollIntervalMs,
58:	);
59:	}
60:	}
61:

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