Nextrek
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
|
<?php
/*
* This file is part of the Predis package.
*
* (c) Daniele Alessandri <suppakilla@gmail.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Predis\Protocol\Text;
use Predis\CommunicationException;
use Predis\Connection\ComposableConnectionInterface;
use Predis\Protocol\ProtocolException;
use Predis\Protocol\ResponseHandlerInterface;
use Predis\Protocol\ResponseReaderInterface;
/**
* Implements a pluggable response reader using the standard wire protocol
* defined by Redis.
*
* @link http://redis.io/topics/protocol
* @author Daniele Alessandri <suppakilla@gmail.com>
*/
class TextResponseReader implements ResponseReaderInterface
{
private $handlers;
/**
*
*/
public function __construct()
{
$this->handlers = $this->getDefaultHandlers();
}
/**
* Returns the default set of response handlers for all the type of replies
* that can be returned by Redis.
*/
private function getDefaultHandlers()
{
return array(
TextProtocol::PREFIX_STATUS => new ResponseStatusHandler(),
TextProtocol::PREFIX_ERROR => new ResponseErrorHandler(),
TextProtocol::PREFIX_INTEGER => new ResponseIntegerHandler(),
TextProtocol::PREFIX_BULK => new ResponseBulkHandler(),
TextProtocol::PREFIX_MULTI_BULK => new ResponseMultiBulkHandler(),
);
}
/**
* Sets a response handler for a certain prefix that identifies a type of
* reply that can be returned by Redis.
*
* @param string $prefix Identifier for a type of reply.
* @param ResponseHandlerInterface $handler Response handler for the reply.
*/
public function setHandler($prefix, ResponseHandlerInterface $handler)
{
$this->handlers[$prefix] = $handler;
}
/**
* Returns the response handler associated to a certain type of reply that
* can be returned by Redis.
*
* @param string $prefix Identifier for a type of reply.
* @return ResponseHandlerInterface
*/
public function getHandler($prefix)
{
if (isset($this->handlers[$prefix])) {
return $this->handlers[$prefix];
}
}
/**
* {@inheritdoc}
*/
public function read(ComposableConnectionInterface $connection)
{
$header = $connection->readLine();
if ($header === '') {
$this->protocolError($connection, 'Unexpected empty header');
}
$prefix = $header[0];
if (!isset($this->handlers[$prefix])) {
$this->protocolError($connection, "Unknown prefix: '$prefix'");
}
$handler = $this->handlers[$prefix];
return $handler->handle($connection, substr($header, 1));
}
/**
* Helper method used to handle a protocol error generated while reading a
* reply from a connection to Redis.
*
* @param ComposableConnectionInterface $connection Connection to Redis that generated the error.
* @param string $message Error message.
*/
private function protocolError(ComposableConnectionInterface $connection, $message)
{
CommunicationException::handle(new ProtocolException($connection, $message));
}
}
|
Revision |
Author |
Commited |
Message |
1464
|
MOliva
|
Tue 13 Oct, 2020 11:16:56 +0000 |
|