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Daniele Alessandri
abd284c972
* Renamed SingleConnectionInterface to NodeConnectionInterface since this name is better and makes even more sense in the context of cluster and replication scenarios. * Moved specialized aggregate connections (the ones implementing both predis and redis cluster and master/slave replication) in a newly created Predis\Connection\Aggregate sub-namespace. * Removed the "Connection" part from names of aggregate connection interfaces in the Predis\Connection\Aggregate sub-namespace. * Changed "Composable" to "Composite" in the name of interfaces and classes that can use pluggable protocol processors.
120 lines
3.2 KiB
PHP
120 lines
3.2 KiB
PHP
<?php
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/*
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* This file is part of the Predis package.
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*
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* (c) Daniele Alessandri <suppakilla@gmail.com>
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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namespace Predis\Protocol\Text;
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use Predis\CommunicationException;
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use Predis\Command\CommandInterface;
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use Predis\Connection\CompositeConnectionInterface;
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use Predis\Protocol\ProtocolException;
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use Predis\Protocol\ProtocolProcessorInterface;
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use Predis\Response\Status as StatusResponse;
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use Predis\Response\Error as ErrorResponse;
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use Predis\Response\Iterator\MultiBulk as MultiBulkIterator;
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/**
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* Protocol processor for the standard Redis wire protocol.
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*
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* @link http://redis.io/topics/protocol
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* @author Daniele Alessandri <suppakilla@gmail.com>
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*/
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class ProtocolProcessor implements ProtocolProcessorInterface
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{
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protected $mbiterable;
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protected $serializer;
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/**
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*
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*/
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public function __construct()
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{
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$this->mbiterable = false;
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$this->serializer = new RequestSerializer();
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}
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/**
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* {@inheritdoc}
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*/
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public function write(CompositeConnectionInterface $connection, CommandInterface $command)
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{
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$request = $this->serializer->serialize($command);
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$connection->writeBuffer($request);
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}
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/**
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* {@inheritdoc}
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*/
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public function read(CompositeConnectionInterface $connection)
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{
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$chunk = $connection->readLine();
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$prefix = $chunk[0];
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$payload = substr($chunk, 1);
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switch ($prefix) {
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case '+':
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return new StatusResponse($payload);
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case '$':
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$size = (int) $payload;
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if ($size === -1) {
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return null;
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}
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return substr($connection->readBuffer($size + 2), 0, -2);
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case '*':
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$count = (int) $payload;
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if ($count === -1) {
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return null;
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}
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if ($this->mbiterable) {
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return new MultiBulkIterator($connection, $count);
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}
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$multibulk = array();
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for ($i = 0; $i < $count; $i++) {
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$multibulk[$i] = $this->read($connection);
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}
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return $multibulk;
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case ':':
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return (int) $payload;
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case '-':
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return new ErrorResponse($payload);
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default:
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CommunicationException::handle(new ProtocolException(
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$connection, "Unknown response prefix: '$prefix'."
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));
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}
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}
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/**
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* Enables or disables returning multibulk responses as specialized PHP
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* iterators used to stream bulk elements of a multibulk response instead
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* returning a plain array.
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*
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* Streamable multibulk responses are not globally supported by the
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* abstractions built-in into Predis, such as transactions or pipelines.
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* Use them with care!
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*
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* @param bool $value Enable or disable streamable multibulk responses.
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*/
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public function useIterableMultibulk($value)
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{
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$this->mbiterable = (bool) $value;
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}
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}
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