| 1: | <?php |
| 2: | |
| 3: | declare(strict_types=1); |
| 4: | |
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| 6: | |
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| 9: | |
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| 11: | |
| 12: | |
| 13: | |
| 14: | namespace Nexus\Mcp\Server\Transport; |
| 15: | |
| 16: | use Amp\ByteStream\ReadableResourceStream; |
| 17: | use Amp\ByteStream\ReadableStream; |
| 18: | use Amp\ByteStream\WritableResourceStream; |
| 19: | use Amp\ByteStream\WritableStream; |
| 20: | use Nexus\Mcp\Core\Schema\JsonRpc\JsonRpcErrorResponse; |
| 21: | use Nexus\Mcp\Core\Schema\JsonRpc\JsonRpcMessage; |
| 22: | use Nexus\Mcp\Core\Transport\LineDuplex; |
| 23: | use Nexus\Mcp\Core\Transport\LineReader; |
| 24: | use Nexus\Mcp\Core\Transport\SendContext; |
| 25: | use Nexus\Mcp\Core\Transport\SubscriptionInterface; |
| 26: | use Nexus\Mcp\Core\Transport\TransportInterface; |
| 27: | use Psr\Log\LoggerInterface; |
| 28: | use Psr\Log\NullLogger; |
| 29: | |
| 30: | |
| 31: | |
| 32: | |
| 33: | final class StdioServerTransport implements TransportInterface |
| 34: | { |
| 35: | private readonly LineDuplex $duplex; |
| 36: | |
| 37: | public function __construct( |
| 38: | private readonly ReadableStream $stdin = new ReadableResourceStream(\STDIN), |
| 39: | private readonly WritableStream $stdout = new WritableResourceStream(\STDOUT), |
| 40: | LoggerInterface $logger = new NullLogger(), |
| 41: | int $maxLineBytes = LineReader::DEFAULT_MAX_LINE_BYTES, |
| 42: | ) { |
| 43: | $this->duplex = new LineDuplex( |
| 44: | hostTransport: self::class, |
| 45: | label: 'Stdio server', |
| 46: | logger: $logger, |
| 47: | maxLineBytes: $maxLineBytes, |
| 48: | onParseFailure: function (JsonRpcErrorResponse $response): void { |
| 49: | $this->send($response); |
| 50: | }, |
| 51: | onBeforeClose: function (): void { |
| 52: | $this->stdin->close(); |
| 53: | $this->stdout->close(); |
| 54: | }, |
| 55: | ); |
| 56: | } |
| 57: | |
| 58: | #[\Override] |
| 59: | public function start(): void |
| 60: | { |
| 61: | $this->duplex->start($this->stdin, $this->stdout); |
| 62: | } |
| 63: | |
| 64: | #[\Override] |
| 65: | public function send(JsonRpcMessage $message, ?SendContext $context = null): void |
| 66: | { |
| 67: | $this->duplex->send($message); |
| 68: | } |
| 69: | |
| 70: | #[\Override] |
| 71: | public function close(): void |
| 72: | { |
| 73: | $this->duplex->close(); |
| 74: | } |
| 75: | |
| 76: | #[\Override] |
| 77: | public function getSessionId(): ?string |
| 78: | { |
| 79: | return null; |
| 80: | } |
| 81: | |
| 82: | #[\Override] |
| 83: | public function onMessage(\Closure $listener): SubscriptionInterface |
| 84: | { |
| 85: | return $this->duplex->onMessage($listener); |
| 86: | } |
| 87: | |
| 88: | #[\Override] |
| 89: | public function onError(\Closure $listener): SubscriptionInterface |
| 90: | { |
| 91: | return $this->duplex->onError($listener); |
| 92: | } |
| 93: | |
| 94: | #[\Override] |
| 95: | public function onDrain(\Closure $listener): SubscriptionInterface |
| 96: | { |
| 97: | return $this->duplex->onDrain($listener); |
| 98: | } |
| 99: | |
| 100: | #[\Override] |
| 101: | public function onClose(\Closure $listener): SubscriptionInterface |
| 102: | { |
| 103: | return $this->duplex->onClose($listener); |
| 104: | } |
| 105: | } |
| 106: | |