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<?php |
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declare(strict_types = 1); |
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namespace Innmind\AMQP\Transport; |
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use Innmind\AMQP\{ |
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Transport\Connection\FrameReader, |
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Transport\Protocol\Version, |
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Model\Connection\StartOk, |
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Model\Connection\SecureOk, |
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Model\Connection\TuneOk, |
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Model\Connection\Open, |
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Model\Connection\Close, |
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Model\Connection\MaxChannels, |
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Model\Connection\MaxFrameSize, |
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Exception\FrameChannelExceedAllowedChannelNumber, |
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Exception\FrameExceedAllowedSize, |
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Exception\UnexpectedFrame |
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}; |
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use Innmind\Socket\{ |
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Internet\Transport, |
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Client\Internet as Socket |
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}; |
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use Innmind\Stream\Select; |
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use Innmind\Url\{ |
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UrlInterface, |
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Authority\NullUserInformation |
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}; |
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use Innmind\TimeContinuum\ElapsedPeriod; |
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use Innmind\Immutable\Str; |
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final class Connection |
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{ |
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private $transport; |
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private $authority; |
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private $vhost; |
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private $protocol; |
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private $socket; |
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private $select; |
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private $read; |
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private $opened = false; |
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private $maxChannels; |
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private $maxFrameSize; |
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private $heartbeat; |
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public function __construct( |
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Transport $transport, |
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UrlInterface $server, |
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Protocol $protocol, |
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ElapsedPeriod $timeout |
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) { |
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$this->transport = $transport; |
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$this->authority = $server->authority(); |
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$this->vhost = $server->path(); |
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$this->protocol = $protocol; |
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$this->socket = new Socket( |
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$transport, |
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$this->authority->withUserInformation(new NullUserInformation) |
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); |
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$this->select = (new Select($timeout))->forRead($this->socket); |
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$this->read = new FrameReader; |
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$this->maxChannels = new MaxChannels(0); |
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$this->maxFrameSize = new MaxFrameSize(0); |
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$this->heartbeat = $timeout; |
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$this->open(); |
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} |
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public function protocol(): Protocol |
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{ |
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return $this->protocol; |
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} |
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public function send(Frame $frame): self |
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{ |
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if (!$this->maxChannels->allows($frame->channel()->toInt())) { |
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throw new FrameChannelExceedAllowedChannelNumber( |
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$frame->channel(), |
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$this->maxChannels |
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); |
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} |
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$frame = (new Str((string) $frame))->toEncoding('ASCII'); |
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if (!$this->maxFrameSize->allows($frame->length())) { |
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throw new FrameExceedAllowedSize( |
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$frame->length(), |
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$this->maxFrameSize |
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); |
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} |
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$this->socket->write($frame); |
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return $this; |
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} |
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public function wait(string ...$names): Frame |
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{ |
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do { |
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$streams = ($this->select)(); |
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} while (!$streams->get('read')->contains($this->socket)); |
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$frame = ($this->read)($this->socket, $this->protocol); |
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foreach ($names as $name) { |
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if ($this->protocol->method($name)->equals($frame->method())) { |
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return $frame; |
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} |
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} |
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throw new UnexpectedFrame($frame->method(), ...$names); |
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} |
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public function __destruct() |
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{ |
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$this->close(); |
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} |
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private function open(): void |
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{ |
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if ($this->opened()) { |
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return; |
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} |
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$this->start(); |
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$this->handshake(); |
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$this->openVHost(); |
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$this->opened = true; |
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} |
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private function close(): void |
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{ |
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if (!$this->opened()) { |
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return; |
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} |
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$this |
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->send($this->protocol->connection()->close(new Close)) |
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->wait('connection.close-ok'); |
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$this->socket->close(); |
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$this->opened = false; |
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} |
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private function opened(): bool |
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{ |
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return $this->opened && !$this->socket->closed(); |
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} |
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private function start(): void |
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{ |
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$this->socket->write( |
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new Str((string) $this->protocol->version()) |
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); |
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$frame = $this->wait('connection.start'); |
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$this->protocol->use( |
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new Version( |
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$frame->values()->get(0)->original()->value(), |
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$frame->values()->get(1)->original()->value(), |
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0 //server doesn't provide bugfix version |
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) |
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); |
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$this->send($this->protocol->connection()->startOk( |
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new StartOk( |
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$this->authority->userInformation()->user(), |
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$this->authority->userInformation()->password() |
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) |
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)); |
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} |
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private function handshake(): void |
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{ |
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$frame = $this->wait('connection.secure', 'connection.tune'); |
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if ($this->protocol->method('connection.secure')->equals($frame->method())) { |
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$this->send($this->protocol->connection()->secureOk( |
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new SecureOk( |
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$this->authority->userInformation()->user(), |
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$this->authority->userInformation()->password() |
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) |
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)); |
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$frame = $this->wait('connection.tune'); |
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} |
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$this->maxChannels = new MaxChannels( |
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$frame->values()->get(0)->original()->value() |
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); |
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$this->maxFrameSize = new MaxFrameSize( |
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$frame->values()->get(1)->original()->value() |
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); |
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$this->heartbeat = new ElapsedPeriod( |
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$frame->values()->get(2)->original()->value() |
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); |
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$this->select = (new Select($this->heartbeat))->forRead($this->socket); |
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$this->send($this->protocol->connection()->tuneOk( |
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new TuneOk( |
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$this->maxChannels, |
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$this->maxFrameSize, |
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$this->heartbeat |
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) |
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)); |
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2 |
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} |
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private function openVHost(): void |
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{ |
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$this |
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->send($this->protocol->connection()->open( |
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new Open($this->vhost) |
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)) |
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->wait('connection.open-ok'); |
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} |
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} |
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Innmind /
AMQP
