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
|
<?php
/**
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
* http://www.gnu.org/copyleft/gpl.html
*
* @file
*/
/**
* External storage in PHP process memory for testing.
*
* In this system, each store "location" is separate PHP array.
* URLs are of the form "memory://location/id". The id/value pairs
* at each location are segregated by DB domain ID.
*
* @see ExternalStoreAccess
* @ingroup ExternalStorage
* @since 1.33
*/
class ExternalStoreMemory extends ExternalStoreMedium {
/** @var array[] Map of (location => DB domain => id => value) */
private static $data = [];
/** @var int */
private static $nextId = 0;
public function fetchFromURL( $url ) {
[ $location, $id ] = self::getURLComponents( $url );
if ( $id === null ) {
throw new UnexpectedValueException( "Missing ID in URL component." );
}
return self::$data[$location][$this->dbDomain][$id] ?? false;
}
public function batchFetchFromURLs( array $urls ) {
$blobs = [];
foreach ( $urls as $url ) {
$blob = $this->fetchFromURL( $url );
if ( $blob !== false ) {
$blobs[$url] = $blob;
}
}
return $blobs;
}
public function store( $location, $data ) {
$index = ++self::$nextId;
self::$data[$location][$this->dbDomain][$index] = $data;
return "memory://$location/$index";
}
/**
* Remove all data from memory for this domain
*/
public function clear() {
foreach ( self::$data as &$dataForLocation ) {
unset( $dataForLocation[$this->dbDomain] );
}
unset( $dataForLocation );
self::$data = array_filter( self::$data, 'count' );
self::$nextId = 0;
}
/**
* @param string $url
* @return array (location, ID or null)
*/
private function getURLComponents( $url ) {
// @phan-suppress-next-line PhanSuspiciousBinaryAddLists It's intentional
[ $proto, $path ] = explode( '://', $url, 2 ) + [ null, null ];
if ( $proto !== 'memory' ) {
throw new UnexpectedValueException( "Got URL of protocol '$proto', not 'memory'." );
} elseif ( $path === null ) {
throw new UnexpectedValueException( "URL is missing path component." );
}
$parts = explode( '/', $path );
if ( count( $parts ) > 2 ) {
throw new UnexpectedValueException( "Too components in URL '$path'." );
}
return [ $parts[0], $parts[1] ?? null ];
}
}
|
