MediaWiki REL1_30
MultiWriteBagOStuffTest.php
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1<?php
2
8 private $cache1;
10 private $cache2;
12 private $cache;
13
14 protected function setUp() {
15 parent::setUp();
16
17 $this->cache1 = new HashBagOStuff();
18 $this->cache2 = new HashBagOStuff();
19 $this->cache = new MultiWriteBagOStuff( [
20 'caches' => [ $this->cache1, $this->cache2 ],
21 'replication' => 'async',
22 'asyncHandler' => 'DeferredUpdates::addCallableUpdate'
23 ] );
24 }
25
30 public function testSetImmediate() {
31 $key = wfRandomString();
33 $this->cache->set( $key, $value );
34
35 // Set in tier 1
36 $this->assertEquals( $value, $this->cache1->get( $key ), 'Written to tier 1' );
37 // Set in tier 2
38 $this->assertEquals( $value, $this->cache2->get( $key ), 'Written to tier 2' );
39 }
40
44 public function testSyncMerge() {
45 $key = wfRandomString();
47 $func = function () use ( $value ) {
48 return $value;
49 };
50
51 // XXX: DeferredUpdates bound to transactions in CLI mode
52 $dbw = wfGetDB( DB_MASTER );
53 $dbw->begin();
54 $this->cache->merge( $key, $func );
55
56 // Set in tier 1
57 $this->assertEquals( $value, $this->cache1->get( $key ), 'Written to tier 1' );
58 // Not yet set in tier 2
59 $this->assertEquals( false, $this->cache2->get( $key ), 'Not written to tier 2' );
60
61 $dbw->commit();
62
63 // Set in tier 2
64 $this->assertEquals( $value, $this->cache2->get( $key ), 'Written to tier 2' );
65
66 $key = wfRandomString();
67
68 $dbw->begin();
69 $this->cache->merge( $key, $func, 0, 1, BagOStuff::WRITE_SYNC );
70
71 // Set in tier 1
72 $this->assertEquals( $value, $this->cache1->get( $key ), 'Written to tier 1' );
73 // Also set in tier 2
74 $this->assertEquals( $value, $this->cache2->get( $key ), 'Written to tier 2' );
75
76 $dbw->commit();
77 }
78
82 public function testSetDelayed() {
83 $key = wfRandomString();
84 $value = (object)[ 'v' => wfRandomString() ];
85 $expectValue = clone $value;
86
87 // XXX: DeferredUpdates bound to transactions in CLI mode
88 $dbw = wfGetDB( DB_MASTER );
89 $dbw->begin();
90 $this->cache->set( $key, $value );
91
92 // Test that later changes to $value don't affect the saved value (e.g. T168040)
93 $value->v = 'bogus';
94
95 // Set in tier 1
96 $this->assertEquals( $expectValue, $this->cache1->get( $key ), 'Written to tier 1' );
97 // Not yet set in tier 2
98 $this->assertEquals( false, $this->cache2->get( $key ), 'Not written to tier 2' );
99
100 $dbw->commit();
101
102 // Set in tier 2
103 $this->assertEquals( $expectValue, $this->cache2->get( $key ), 'Written to tier 2' );
104 }
105
109 public function testMakeKey() {
110 $cache1 = $this->getMockBuilder( HashBagOStuff::class )
111 ->setMethods( [ 'makeKey' ] )->getMock();
112 $cache1->expects( $this->once() )->method( 'makeKey' )
113 ->willReturn( 'special' );
114
115 $cache2 = $this->getMockBuilder( HashBagOStuff::class )
116 ->setMethods( [ 'makeKey' ] )->getMock();
117 $cache2->expects( $this->never() )->method( 'makeKey' );
118
119 $cache = new MultiWriteBagOStuff( [ 'caches' => [ $cache1, $cache2 ] ] );
120 $this->assertSame( 'special', $cache->makeKey( 'a', 'b' ) );
121 }
122
126 public function testMakeGlobalKey() {
127 $cache1 = $this->getMockBuilder( HashBagOStuff::class )
128 ->setMethods( [ 'makeGlobalKey' ] )->getMock();
129 $cache1->expects( $this->once() )->method( 'makeGlobalKey' )
130 ->willReturn( 'special' );
131
132 $cache2 = $this->getMockBuilder( HashBagOStuff::class )
133 ->setMethods( [ 'makeGlobalKey' ] )->getMock();
134 $cache2->expects( $this->never() )->method( 'makeGlobalKey' );
135
136 $cache = new MultiWriteBagOStuff( [ 'caches' => [ $cache1, $cache2 ] ] );
137
138 $this->assertSame( 'special', $cache->makeGlobalKey( 'a', 'b' ) );
139 }
140}
wfRandomString( $length=32)
Get a random string containing a number of pseudo-random hex characters.
wfGetDB( $db, $groups=[], $wiki=false)
Get a Database object.
Simple store for keeping values in an associative array for the current process.
testMakeGlobalKey()
MultiWriteBagOStuff::makeGlobalKey.
testSetDelayed()
MultiWriteBagOStuff::set.
testSetImmediate()
MultiWriteBagOStuff::set MultiWriteBagOStuff::doWrite.
testSyncMerge()
MultiWriteBagOStuff.
testMakeKey()
MultiWriteBagOStuff::makeKey.
A cache class that replicates all writes to multiple child caches.
makeGlobalKey()
Make a global cache key.
makeKey()
Make a cache key, scoped to this instance's keyspace.
globals will be eliminated from MediaWiki replaced by an application object which would be passed to constructors Whether that would be an convenient solution remains to be but certainly PHP makes such object oriented programming models easier than they were in previous versions For the time being MediaWiki programmers will have to work in an environment with some global context At the time of globals were initialised on startup by MediaWiki of these were configuration which are documented in DefaultSettings php There is no comprehensive documentation for the remaining however some of the most important ones are listed below They are typically initialised either in index php or in Setup php For a description of the see design txt $wgTitle Title object created from the request URL $wgOut OutputPage object for HTTP response $wgUser User object for the user associated with the current request $wgLang Language object selected by user preferences $wgContLang Language object associated with the wiki being viewed $wgParser Parser object Parser extensions register their hooks here $wgRequest WebRequest object
Definition globals.txt:64
you have access to all of the normal MediaWiki so you can get a DB use the cache
const DB_MASTER
Definition defines.php:26