1
|
|
|
<?php |
2
|
|
|
|
3
|
|
|
/* |
4
|
|
|
* This file is part of SwiftMailer. |
5
|
|
|
* (c) 2004-2009 Chris Corbyn |
6
|
|
|
* |
7
|
|
|
* For the full copyright and license information, please view the LICENSE |
8
|
|
|
* file that was distributed with this source code. |
9
|
|
|
*/ |
10
|
|
|
|
11
|
|
|
/** |
12
|
|
|
* Redundantly and rotationally uses several Transports when sending. |
13
|
|
|
* |
14
|
|
|
* @author Chris Corbyn |
15
|
|
|
*/ |
16
|
|
|
class Swift_Transport_LoadBalancedTransport implements Swift_Transport |
|
|
|
|
17
|
|
|
{ |
18
|
|
|
/** |
19
|
|
|
* Transports which are deemed useless. |
20
|
|
|
* |
21
|
|
|
* @var Swift_Transport[] |
22
|
|
|
*/ |
23
|
|
|
private $_deadTransports = array(); |
24
|
|
|
|
25
|
|
|
/** |
26
|
|
|
* The Transports which are used in rotation. |
27
|
|
|
* |
28
|
|
|
* @var Swift_Transport[] |
29
|
|
|
*/ |
30
|
|
|
protected $_transports = array(); |
31
|
|
|
|
32
|
|
|
/** |
33
|
|
|
* The Transport used in the last successful send operation. |
34
|
|
|
* |
35
|
|
|
* @var Swift_Transport |
36
|
|
|
*/ |
37
|
|
|
protected $_lastUsedTransport; |
38
|
|
|
|
39
|
|
|
// needed as __construct is called from elsewhere explicitly |
40
|
23 |
|
public function __construct() |
41
|
|
|
{ |
42
|
23 |
|
} |
43
|
|
|
|
44
|
|
|
/** |
45
|
|
|
* Set $transports to delegate to. |
46
|
|
|
* |
47
|
|
|
* @param Swift_Transport[] $transports |
48
|
|
|
*/ |
49
|
22 |
|
public function setTransports(array $transports) |
50
|
|
|
{ |
51
|
22 |
|
$this->_transports = $transports; |
52
|
22 |
|
$this->_deadTransports = array(); |
53
|
22 |
|
} |
54
|
|
|
|
55
|
|
|
/** |
56
|
|
|
* Get $transports to delegate to. |
57
|
|
|
* |
58
|
|
|
* @return Swift_Transport[] |
59
|
|
|
*/ |
60
|
|
|
public function getTransports() |
61
|
|
|
{ |
62
|
|
|
return array_merge($this->_transports, $this->_deadTransports); |
63
|
|
|
} |
64
|
|
|
|
65
|
|
|
/** |
66
|
|
|
* Get the Transport used in the last successful send operation. |
67
|
|
|
* |
68
|
|
|
* @return Swift_Transport |
69
|
|
|
*/ |
70
|
|
|
public function getLastUsedTransport() |
71
|
|
|
{ |
72
|
|
|
return $this->_lastUsedTransport; |
73
|
|
|
} |
74
|
|
|
|
75
|
|
|
/** |
76
|
|
|
* Test if this Transport mechanism has started. |
77
|
|
|
* |
78
|
|
|
* @return bool |
79
|
|
|
*/ |
80
|
4 |
|
public function isStarted() |
81
|
|
|
{ |
82
|
4 |
|
return count($this->_transports) > 0; |
83
|
|
|
} |
84
|
|
|
|
85
|
|
|
/** |
86
|
|
|
* Start this Transport mechanism. |
87
|
|
|
*/ |
88
|
20 |
|
public function start() |
89
|
|
|
{ |
90
|
20 |
|
$this->_transports = array_merge($this->_transports, $this->_deadTransports); |
91
|
20 |
|
} |
92
|
|
|
|
93
|
|
|
/** |
94
|
|
|
* Stop this Transport mechanism. |
95
|
|
|
*/ |
96
|
2 |
|
public function stop() |
97
|
|
|
{ |
98
|
2 |
|
foreach ($this->_transports as $transport) { |
99
|
2 |
|
$transport->stop(); |
100
|
|
|
} |
101
|
2 |
|
} |
102
|
|
|
|
103
|
|
|
/** |
104
|
|
|
* Check if this Transport mechanism is alive. |
105
|
|
|
* |
106
|
|
|
* If a Transport mechanism session is no longer functional, the method |
107
|
|
|
* returns FALSE. It is the responsibility of the developer to handle this |
108
|
|
|
* case and restart the Transport mechanism manually. |
109
|
|
|
* |
110
|
|
|
* @example |
111
|
|
|
* |
112
|
|
|
* if (!$transport->ping()) { |
113
|
|
|
* $transport->stop(); |
114
|
|
|
* $transport->start(); |
115
|
|
|
* } |
116
|
|
|
* |
117
|
|
|
* The Transport mechanism will be started, if it is not already. |
118
|
|
|
* |
119
|
|
|
* It is undefined if the Transport mechanism attempts to restart as long as |
120
|
|
|
* the return value reflects whether the mechanism is now functional. |
121
|
|
|
* |
122
|
|
|
* @return bool TRUE if the transport is alive |
123
|
|
|
*/ |
124
|
|
|
public function ping() |
125
|
|
|
{ |
126
|
|
|
foreach ($this->transports as $transport) { |
|
|
|
|
127
|
|
|
if (!$transport->ping()) { |
128
|
|
|
$this->killCurrentTransport(); |
|
|
|
|
129
|
|
|
} |
130
|
|
|
} |
131
|
|
|
|
132
|
|
|
return count($this->transports) > 0; |
|
|
|
|
133
|
|
|
} |
134
|
|
|
|
135
|
|
|
/** |
136
|
|
|
* Send the given Message. |
137
|
|
|
* |
138
|
|
|
* Recipient/sender data will be retrieved from the Message API. |
139
|
|
|
* The return value is the number of recipients who were accepted for delivery. |
140
|
|
|
* |
141
|
|
|
* @param Swift_Mime_Message $message |
142
|
|
|
* @param string[] $failedRecipients An array of failures by-reference |
143
|
|
|
* |
144
|
|
|
* @return int |
145
|
|
|
* |
146
|
|
|
* @throws Swift_TransportException |
147
|
|
|
*/ |
148
|
10 |
View Code Duplication |
public function send(Swift_Mime_Message $message, &$failedRecipients = null) |
|
|
|
|
149
|
|
|
{ |
150
|
10 |
|
$maxTransports = count($this->_transports); |
151
|
10 |
|
$sent = 0; |
152
|
10 |
|
$this->_lastUsedTransport = null; |
153
|
|
|
|
154
|
10 |
|
for ($i = 0; $i < $maxTransports |
155
|
10 |
|
&& $transport = $this->_getNextTransport(); ++$i) { |
156
|
|
|
try { |
157
|
10 |
|
if (!$transport->isStarted()) { |
158
|
10 |
|
$transport->start(); |
159
|
|
|
} |
160
|
|
|
|
161
|
10 |
|
$sent = $transport->send($message, $failedRecipients); |
162
|
8 |
|
if ($sent) { |
163
|
7 |
|
$this->_lastUsedTransport = $transport; |
164
|
8 |
|
break; |
165
|
|
|
} |
166
|
|
|
|
167
|
5 |
|
} catch (Swift_TransportException $e) { |
168
|
5 |
|
$this->_killCurrentTransport(); |
169
|
|
|
} |
170
|
|
|
} |
171
|
|
|
|
172
|
10 |
|
if (count($this->_transports) === 0) { |
173
|
3 |
|
throw new Swift_TransportException( |
174
|
3 |
|
'All Transports in LoadBalancedTransport failed, or no Transports available' |
175
|
|
|
); |
176
|
|
|
} |
177
|
|
|
|
178
|
8 |
|
return $sent; |
179
|
|
|
} |
180
|
|
|
|
181
|
|
|
/** |
182
|
|
|
* Register a plugin. |
183
|
|
|
* |
184
|
|
|
* @param Swift_Events_EventListener $plugin |
185
|
|
|
*/ |
186
|
2 |
|
public function registerPlugin(Swift_Events_EventListener $plugin) |
187
|
|
|
{ |
188
|
2 |
|
foreach ($this->_transports as $transport) { |
189
|
2 |
|
$transport->registerPlugin($plugin); |
190
|
|
|
} |
191
|
2 |
|
} |
192
|
|
|
|
193
|
|
|
/** |
194
|
|
|
* Rotates the transport list around and returns the first instance. |
195
|
|
|
* |
196
|
|
|
* @return Swift_Transport |
197
|
|
|
*/ |
198
|
18 |
|
protected function _getNextTransport() |
199
|
|
|
{ |
200
|
18 |
|
$next = array_shift($this->_transports); |
201
|
18 |
|
if ($next) { |
202
|
18 |
|
$this->_transports[] = $next; |
203
|
|
|
} |
204
|
|
|
|
205
|
18 |
|
return $next; |
206
|
|
|
} |
207
|
|
|
|
208
|
|
|
/** |
209
|
|
|
* Tag the currently used (top of stack) transport as dead/useless. |
210
|
|
|
*/ |
211
|
10 |
|
protected function _killCurrentTransport() |
212
|
|
|
{ |
213
|
10 |
|
$transport = array_pop($this->_transports); |
214
|
10 |
|
if ($transport) { |
215
|
|
|
|
216
|
|
|
try { |
217
|
10 |
|
$transport->stop(); |
218
|
10 |
|
} catch (Exception $e) { |
|
|
|
|
219
|
|
|
} |
220
|
|
|
|
221
|
10 |
|
$this->_deadTransports[] = $transport; |
222
|
|
|
} |
223
|
10 |
|
} |
224
|
|
|
} |
225
|
|
|
|
You can fix this by adding a namespace to your class:
When choosing a vendor namespace, try to pick something that is not too generic to avoid conflicts with other libraries.