1: <?php
2:
3: /**
4: *
5: * An implementation of the AlphaCacheProviderInterface interface that uses APC/APCu as the
6: * target store.
7: *
8: * @package alpha::util::cache
9: * @since 1.2.4
10: * @author John Collins <dev@alphaframework.org>
11: * @version $Id: AlphaCacheProviderAPC.inc 1813 2014-08-25 22:22:31Z alphadevx $
12: * @license http://www.opensource.org/licenses/bsd-license.php The BSD License
13: * @copyright Copyright (c) 2014, John Collins (founder of Alpha Framework).
14: * All rights reserved.
15: *
16: * <pre>
17: * Redistribution and use in source and binary forms, with or
18: * without modification, are permitted provided that the
19: * following conditions are met:
20: *
21: * * Redistributions of source code must retain the above
22: * copyright notice, this list of conditions and the
23: * following disclaimer.
24: * * Redistributions in binary form must reproduce the above
25: * copyright notice, this list of conditions and the
26: * following disclaimer in the documentation and/or other
27: * materials provided with the distribution.
28: * * Neither the name of the Alpha Framework nor the names
29: * of its contributors may be used to endorse or promote
30: * products derived from this software without specific
31: * prior written permission.
32: *
33: * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
34: * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
35: * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
36: * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
37: * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
38: * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
39: * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
40: * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
41: * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
42: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
43: * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
44: * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
45: * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
46: * </pre>
47: *
48: */
49: class AlphaCacheProviderAPC implements AlphaCacheProviderInterface {
50: /**
51: * Trace logger
52: *
53: * @var Logger
54: * @since 1.2.4
55: */
56: private static $logger = null;
57:
58:
59: /**
60: * Constructor
61: *
62: * @since 1.2.4
63: */
64: public function __construct() {
65: self::$logger = new Logger('AlphaCacheProviderAPC');
66:
67: global $config;
68:
69: }
70:
71: /**
72: * (non-PHPdoc)
73: * @see alpha/util/cache/AlphaCacheProviderInterface::get()
74: * @since 1.2.4
75: */
76: public function get($key) {
77: self::$logger->debug('>>get(key=['.$key.'])');
78:
79: try {
80: $value = apc_fetch($key);
81:
82: self::$logger->debug('<<get: ['.print_r($value, true).'])');
83:
84: return $value;
85: }catch(Exception $e) {
86: self::$logger->error('Error while attempting to load a business object from APC cache: ['.$e->getMessage().']');
87: self::$logger->debug('<<get: [false])');
88: return false;
89: }
90: }
91:
92: /**
93: * (non-PHPdoc)
94: * @see alpha/util/cache/AlphaCacheProviderInterface::set()
95: * @since 1.2.4
96: */
97: public function set($key, $value, $expiry=0) {
98:
99: try {
100: if($expiry > 0)
101: apc_store($key, $value, $expiry);
102: else
103: apc_store($key, $value);
104:
105: }catch(Exception $e) {
106: self::$logger->error('Error while attempting to store a value to APC cache: ['.$e->getMessage().']');
107: }
108: }
109:
110: /**
111: * (non-PHPdoc)
112: * @see alpha/util/cache/AlphaCacheProviderInterface::delete()
113: * @since 1.2.4
114: */
115: public function delete($key) {
116:
117: try {
118: apc_delete($key);
119: }catch(Exception $e) {
120: self::$logger->error('Error while attempting to remove a value from APC cache: ['.$e->getMessage().']');
121: }
122: }
123: }
124:
125: ?>