10 define( 'MSG_LOAD_TIMEOUT', 60 );
11 define( 'MSG_LOCK_TIMEOUT', 10 );
12 define( 'MSG_WAIT_TIMEOUT', 10 );
13 define( 'MSG_CACHE_VERSION', 1 );
17 * Performs various MediaWiki namespace-related functions
22 * Process local cache of loaded messages that are defined in
23 * MediaWiki namespace. First array level is a language code,
24 * second level is message key and the values are either message
25 * content prefixed with space, or !NONEXISTENT for negative
30 // Should mean that database cannot be used, but check
33 /// Lifetime for cache, used by object caching
37 * Message cache has it's own parser which it uses to transform
40 protected $mParserOptions, $mParser;
42 /// Variable for tracking which variables are already loaded
43 protected $mLoadedLanguages = array();
46 * Used for automatic detection of most used messages.
48 protected $mRequestedMessages = array();
51 * How long the message request counts are stored. Longer period gives
52 * better sample, but also takes longer to adapt changes. The counts
53 * are aggregrated per day, regardless of the value of this variable.
55 protected static $mAdaptiveDataAge = 604800; // Is 7*24*3600
58 * Filter the tail of less used messages that are requested more seldom
59 * than this factor times the number of request of most requested message.
60 * These messages are not loaded in the default set, but are still cached
61 * individually on demand with the normal cache expiry time.
63 protected static $mAdaptiveInclusionThreshold = 0.05;
70 private static $instance;
75 protected $mInParser = false;
78 * Get the signleton instance of this class
81 * @return MessageCache object
83 public static function singleton() {
84 if ( is_null( self
::$instance ) ) {
85 global $wgUseDatabaseMessages, $wgMsgCacheExpiry;
86 self
::$instance = new self( wfGetMessageCacheStorage(), $wgUseDatabaseMessages, $wgMsgCacheExpiry );
88 return self
::$instance;
92 * Destroy the singleton instance
96 public static function destroyInstance() {
97 self
::$instance = null;
100 function __construct( $memCached, $useDB, $expiry ) {
102 $memCached = wfGetCache( CACHE_NONE
);
105 $this->mMemc
= $memCached;
106 $this->mDisable
= !$useDB;
107 $this->mExpiry
= $expiry;
111 * ParserOptions is lazy initialised.
113 * @return ParserOptions
115 function getParserOptions() {
116 if ( !$this->mParserOptions
) {
117 $this->mParserOptions
= new ParserOptions
;
119 return $this->mParserOptions
;
123 * Try to load the cache from a local file.
124 * Actual format of the file depends on the $wgLocalMessageCacheSerialized
127 * @param $hash String: the hash of contents, to check validity.
128 * @param $code Mixed: Optional language code, see documenation of load().
129 * @return false on failure.
131 function loadFromLocal( $hash, $code ) {
132 global $wgCacheDirectory, $wgLocalMessageCacheSerialized;
134 $filename = "$wgCacheDirectory/messages-" . wfWikiID() . "-$code";
136 # Check file existence
137 wfSuppressWarnings();
138 $file = fopen( $filename, 'r' );
141 return false; // No cache file
144 if ( $wgLocalMessageCacheSerialized ) {
145 // Check to see if the file has the hash specified
146 $localHash = fread( $file, 32 );
147 if ( $hash === $localHash ) {
148 // All good, get the rest of it
150 while ( !feof( $file ) ) {
151 $serialized .= fread( $file, 100000 );
154 return $this->setCache( unserialize( $serialized ), $code );
157 return false; // Wrong hash
160 $localHash = substr( fread( $file, 40 ), 8 );
162 if ( $hash != $localHash ) {
163 return false; // Wrong hash
166 # Require overwrites the member variable or just shadows it?
167 require( $filename );
168 return $this->setCache( $this->mCache
, $code );
173 * Save the cache to a local file.
175 function saveToLocal( $serialized, $hash, $code ) {
176 global $wgCacheDirectory;
178 $filename = "$wgCacheDirectory/messages-" . wfWikiID() . "-$code";
179 wfMkdirParents( $wgCacheDirectory, null, __METHOD__
); // might fail
181 wfSuppressWarnings();
182 $file = fopen( $filename, 'w' );
186 wfDebug( "Unable to open local cache file for writing\n" );
190 fwrite( $file, $hash . $serialized );
192 wfSuppressWarnings();
193 chmod( $filename, 0666 );
197 function saveToScript( $array, $hash, $code ) {
198 global $wgCacheDirectory;
200 $filename = "$wgCacheDirectory/messages-" . wfWikiID() . "-$code";
201 $tempFilename = $filename . '.tmp';
202 wfMkdirParents( $wgCacheDirectory, null, __METHOD__
); // might fail
204 wfSuppressWarnings();
205 $file = fopen( $tempFilename, 'w' );
209 wfDebug( "Unable to open local cache file for writing\n" );
213 fwrite( $file, "<?php\n//$hash\n\n \$this->mCache = array(" );
215 foreach ( $array as $key => $message ) {
216 $key = $this->escapeForScript( $key );
217 $message = $this->escapeForScript( $message );
218 fwrite( $file, "'$key' => '$message',\n" );
221 fwrite( $file, ");\n?>" );
223 rename( $tempFilename, $filename );
226 function escapeForScript( $string ) {
227 $string = str_replace( '\\', '\\\\', $string );
228 $string = str_replace( '\'', '\\\'', $string );
233 * Set the cache to $cache, if it is valid. Otherwise set the cache to false.
237 function setCache( $cache, $code ) {
238 if ( isset( $cache['VERSION'] ) && $cache['VERSION'] == MSG_CACHE_VERSION
) {
239 $this->mCache
[$code] = $cache;
247 * Loads messages from caches or from database in this order:
248 * (1) local message cache (if $wgUseLocalMessageCache is enabled)
250 * (3) from the database.
252 * When succesfully loading from (2) or (3), all higher level caches are
253 * updated for the newest version.
255 * Nothing is loaded if member variable mDisable is true, either manually
256 * set by calling code or if message loading fails (is this possible?).
258 * Returns true if cache is already populated or it was succesfully populated,
259 * or false if populating empty cache fails. Also returns true if MessageCache
262 * @param $code String: language to which load messages
264 function load( $code = false ) {
265 global $wgUseLocalMessageCache;
267 if( !is_string( $code ) ) {
268 # This isn't really nice, so at least make a note about it and try to
270 wfDebug( __METHOD__
. " called without providing a language code\n" );
274 # Don't do double loading...
275 if ( isset( $this->mLoadedLanguages
[$code] ) ) {
279 # 8 lines of code just to say (once) that message cache is disabled
280 if ( $this->mDisable
) {
281 static $shownDisabled = false;
282 if ( !$shownDisabled ) {
283 wfDebug( __METHOD__
. ": disabled\n" );
284 $shownDisabled = true;
289 # Loading code starts
290 wfProfileIn( __METHOD__
);
291 $success = false; # Keep track of success
292 $where = array(); # Debug info, delayed to avoid spamming debug log too much
293 $cacheKey = wfMemcKey( 'messages', $code ); # Key in memc for messages
296 # Hash of the contents is stored in memcache, to detect if local cache goes
297 # out of date (due to update in other thread?)
298 if ( $wgUseLocalMessageCache ) {
299 wfProfileIn( __METHOD__
. '-fromlocal' );
301 $hash = $this->mMemc
->get( wfMemcKey( 'messages', $code, 'hash' ) );
303 $success = $this->loadFromLocal( $hash, $code );
304 if ( $success ) $where[] = 'got from local cache';
306 wfProfileOut( __METHOD__
. '-fromlocal' );
310 # Fails if nothing in cache, or in the wrong version.
312 wfProfileIn( __METHOD__
. '-fromcache' );
313 $cache = $this->mMemc
->get( $cacheKey );
314 $success = $this->setCache( $cache, $code );
316 $where[] = 'got from global cache';
317 $this->saveToCaches( $cache, false, $code );
319 wfProfileOut( __METHOD__
. '-fromcache' );
323 # Nothing in caches... so we need create one and store it in caches
325 $where[] = 'cache is empty';
326 $where[] = 'loading from database';
328 $this->lock( $cacheKey );
330 # Limit the concurrency of loadFromDB to a single process
331 # This prevents the site from going down when the cache expires
332 $statusKey = wfMemcKey( 'messages', $code, 'status' );
333 $success = $this->mMemc
->add( $statusKey, 'loading', MSG_LOAD_TIMEOUT
);
335 $cache = $this->loadFromDB( $code );
336 $success = $this->setCache( $cache, $code );
339 $success = $this->saveToCaches( $cache, true, $code );
341 $this->mMemc
->delete( $statusKey );
343 $this->mMemc
->set( $statusKey, 'error', 60 * 5 );
344 wfDebug( "MemCached set error in MessageCache: restart memcached server!\n" );
347 $this->unlock($cacheKey);
351 # Bad luck... this should not happen
352 $where[] = 'loading FAILED - cache is disabled';
353 $info = implode( ', ', $where );
354 wfDebug( __METHOD__
. ": Loading $code... $info\n" );
355 $this->mDisable
= true;
356 $this->mCache
= false;
358 # All good, just record the success
359 $info = implode( ', ', $where );
360 wfDebug( __METHOD__
. ": Loading $code... $info\n" );
361 $this->mLoadedLanguages
[$code] = true;
363 wfProfileOut( __METHOD__
);
368 * Loads cacheable messages from the database. Messages bigger than
369 * $wgMaxMsgCacheEntrySize are assigned a special value, and are loaded
370 * on-demand from the database later.
372 * @param $code String: language code.
373 * @return Array: loaded messages for storing in caches.
375 function loadFromDB( $code ) {
376 wfProfileIn( __METHOD__
);
377 global $wgMaxMsgCacheEntrySize, $wgLanguageCode, $wgAdaptiveMessageCache;
378 $dbr = wfGetDB( DB_SLAVE
);
383 'page_is_redirect' => 0,
384 'page_namespace' => NS_MEDIAWIKI
,
388 if ( $wgAdaptiveMessageCache ) {
389 $mostused = $this->getMostUsedMessages();
390 if ( $code !== $wgLanguageCode ) {
391 foreach ( $mostused as $key => $value ) {
392 $mostused[$key] = "$value/$code";
397 if ( count( $mostused ) ) {
398 $conds['page_title'] = $mostused;
399 } elseif ( $code !== $wgLanguageCode ) {
400 $conds[] = 'page_title' . $dbr->buildLike( $dbr->anyString(), "/$code" );
402 # Effectively disallows use of '/' character in NS_MEDIAWIKI for uses
403 # other than language code.
404 $conds[] = 'page_title NOT' . $dbr->buildLike( $dbr->anyString(), '/', $dbr->anyString() );
407 # Conditions to fetch oversized pages to ignore them
409 $bigConds[] = 'page_len > ' . intval( $wgMaxMsgCacheEntrySize );
411 # Load titles for all oversized pages in the MediaWiki namespace
412 $res = $dbr->select( 'page', 'page_title', $bigConds, __METHOD__
. "($code)-big" );
413 foreach ( $res as $row ) {
414 $cache[$row->page_title
] = '!TOO BIG';
417 # Conditions to load the remaining pages with their contents
418 $smallConds = $conds;
419 $smallConds[] = 'page_latest=rev_id';
420 $smallConds[] = 'rev_text_id=old_id';
421 $smallConds[] = 'page_len <= ' . intval( $wgMaxMsgCacheEntrySize );
424 array( 'page', 'revision', 'text' ),
425 array( 'page_title', 'old_text', 'old_flags' ),
427 __METHOD__
. "($code)-small"
430 foreach ( $res as $row ) {
431 $text = Revision
::getRevisionText( $row );
432 if( $text === false ) {
433 // Failed to fetch data; possible ES errors?
434 // Store a marker to fetch on-demand as a workaround...
436 wfDebugLog( 'MessageCache', __METHOD__
. ": failed to load message page text for {$row->page_title} ($code)" );
438 $entry = ' ' . $text;
440 $cache[$row->page_title
] = $entry;
443 foreach ( $mostused as $key ) {
444 if ( !isset( $cache[$key] ) ) {
445 $cache[$key] = '!NONEXISTENT';
449 $cache['VERSION'] = MSG_CACHE_VERSION
;
450 wfProfileOut( __METHOD__
);
455 * Updates cache as necessary when message page is changed
457 * @param $title String: name of the page changed.
458 * @param $text Mixed: new contents of the page.
460 public function replace( $title, $text ) {
461 global $wgMaxMsgCacheEntrySize;
462 wfProfileIn( __METHOD__
);
464 if ( $this->mDisable
) {
465 wfProfileOut( __METHOD__
);
469 list( $msg, $code ) = $this->figureMessage( $title );
471 $cacheKey = wfMemcKey( 'messages', $code );
472 $this->load( $code );
473 $this->lock( $cacheKey );
475 $titleKey = wfMemcKey( 'messages', 'individual', $title );
477 if ( $text === false ) {
478 # Article was deleted
479 $this->mCache
[$code][$title] = '!NONEXISTENT';
480 $this->mMemc
->delete( $titleKey );
481 } elseif ( strlen( $text ) > $wgMaxMsgCacheEntrySize ) {
483 $this->mCache
[$code][$title] = '!TOO BIG';
484 $this->mMemc
->set( $titleKey, ' ' . $text, $this->mExpiry
);
486 $this->mCache
[$code][$title] = ' ' . $text;
487 $this->mMemc
->delete( $titleKey );
491 $this->saveToCaches( $this->mCache
[$code], true, $code );
492 $this->unlock( $cacheKey );
494 // Also delete cached sidebar... just in case it is affected
495 $codes = array( $code );
496 if ( $code === 'en' ) {
497 // Delete all sidebars, like for example on action=purge on the
499 $codes = array_keys( Language
::getLanguageNames() );
503 foreach ( $codes as $code ) {
504 $sidebarKey = wfMemcKey( 'sidebar', $code );
505 $parserMemc->delete( $sidebarKey );
508 // Update the message in the message blob store
510 MessageBlobStore
::updateMessage( $wgContLang->lcfirst( $msg ) );
512 wfRunHooks( 'MessageCacheReplace', array( $title, $text ) );
514 wfProfileOut( __METHOD__
);
518 * Shortcut to update caches.
520 * @param $cache Array: cached messages with a version.
521 * @param $memc Bool: Wether to update or not memcache.
522 * @param $code String: Language code.
523 * @return False on somekind of error.
525 protected function saveToCaches( $cache, $memc = true, $code = false ) {
526 wfProfileIn( __METHOD__
);
527 global $wgUseLocalMessageCache, $wgLocalMessageCacheSerialized;
529 $cacheKey = wfMemcKey( 'messages', $code );
532 $success = $this->mMemc
->set( $cacheKey, $cache, $this->mExpiry
);
537 # Save to local cache
538 if ( $wgUseLocalMessageCache ) {
539 $serialized = serialize( $cache );
540 $hash = md5( $serialized );
541 $this->mMemc
->set( wfMemcKey( 'messages', $code, 'hash' ), $hash, $this->mExpiry
);
542 if ($wgLocalMessageCacheSerialized) {
543 $this->saveToLocal( $serialized, $hash, $code );
545 $this->saveToScript( $cache, $hash, $code );
549 wfProfileOut( __METHOD__
);
554 * Represents a write lock on the messages key
558 * @return Boolean: success
560 function lock( $key ) {
561 $lockKey = $key . ':lock';
562 for ( $i = 0; $i < MSG_WAIT_TIMEOUT
&& !$this->mMemc
->add( $lockKey, 1, MSG_LOCK_TIMEOUT
); $i++
) {
566 return $i >= MSG_WAIT_TIMEOUT
;
569 function unlock( $key ) {
570 $lockKey = $key . ':lock';
571 $this->mMemc
->delete( $lockKey );
575 * Get a message from either the content language or the user language.
577 * @param $key String: the message cache key
578 * @param $useDB Boolean: get the message from the DB, false to use only
580 * @param $langcode String: code of the language to get the message for, if
581 * it is a valid code create a language for that language,
582 * if it is a string but not a valid code then make a basic
583 * language object, if it is a false boolean then use the
584 * current users language (as a fallback for the old
585 * parameter functionality), or if it is a true boolean
586 * then use the wikis content language (also as a
588 * @param $isFullKey Boolean: specifies whether $key is a two part key
591 * @return string|false
593 function get( $key, $useDB = true, $langcode = true, $isFullKey = false ) {
594 global $wgLanguageCode, $wgContLang;
596 if ( is_int( $key ) ) {
597 // "Non-string key given" exception sometimes happens for numerical strings that become ints somewhere on their way here
598 $key = strval( $key );
601 if ( !is_string( $key ) ) {
602 throw new MWException( 'Non-string key given' );
605 if ( strval( $key ) === '' ) {
606 # Shortcut: the empty key is always missing
610 $lang = wfGetLangObj( $langcode );
612 throw new MWException( "Bad lang code $langcode given" );
615 $langcode = $lang->getCode();
619 # Normalise title-case input (with some inlining)
620 $lckey = str_replace( ' ', '_', $key );
621 if ( ord( $key ) < 128 ) {
622 $lckey[0] = strtolower( $lckey[0] );
623 $uckey = ucfirst( $lckey );
625 $lckey = $wgContLang->lcfirst( $lckey );
626 $uckey = $wgContLang->ucfirst( $lckey );
630 * Record each message request, but only once per request.
631 * This information is not used unless $wgAdaptiveMessageCache
634 $this->mRequestedMessages
[$uckey] = true;
636 # Try the MediaWiki namespace
637 if( !$this->mDisable
&& $useDB ) {
639 if( !$isFullKey && ( $langcode != $wgLanguageCode ) ) {
640 $title .= '/' . $langcode;
642 $message = $this->getMsgFromNamespace( $title, $langcode );
645 # Try the array in the language object
646 if ( $message === false ) {
647 $message = $lang->getMessage( $lckey );
648 if ( is_null( $message ) ) {
653 # Try the array of another language
654 if( $message === false ) {
655 $parts = explode( '/', $lckey );
656 # We may get calls for things that are http-urls from sidebar
657 # Let's not load nonexistent languages for those
658 # They usually have more than one slash.
659 if ( count( $parts ) == 2 && $parts[1] !== '' ) {
660 $message = Language
::getMessageFor( $parts[0], $parts[1] );
661 if ( is_null( $message ) ) {
667 # Is this a custom message? Try the default language in the db...
668 if( ( $message === false ||
$message === '-' ) &&
669 !$this->mDisable
&& $useDB &&
670 !$isFullKey && ( $langcode != $wgLanguageCode ) ) {
671 $message = $this->getMsgFromNamespace( $uckey, $wgLanguageCode );
675 if( $message === false ) {
680 $message = strtr( $message,
682 # Fix for trailing whitespace, removed by textarea
684 # Fix for NBSP, converted to space by firefox
685 ' ' => "\xc2\xa0",
686 ' ' => "\xc2\xa0",
693 * Get a message from the MediaWiki namespace, with caching. The key must
694 * first be converted to two-part lang/msg form if necessary.
696 * @param $title String: Message cache key with initial uppercase letter.
697 * @param $code String: code denoting the language to try.
699 * @return string|false
701 function getMsgFromNamespace( $title, $code ) {
702 global $wgAdaptiveMessageCache;
704 $this->load( $code );
705 if ( isset( $this->mCache
[$code][$title] ) ) {
706 $entry = $this->mCache
[$code][$title];
707 if ( substr( $entry, 0, 1 ) === ' ' ) {
708 return substr( $entry, 1 );
709 } elseif ( $entry === '!NONEXISTENT' ) {
711 } elseif( $entry === '!TOO BIG' ) {
712 // Fall through and try invididual message cache below
715 // XXX: This is not cached in process cache, should it?
717 wfRunHooks( 'MessagesPreLoad', array( $title, &$message ) );
718 if ( $message !== false ) {
723 * If message cache is in normal mode, it is guaranteed
724 * (except bugs) that there is always entry (or placeholder)
725 * in the cache if message exists. Thus we can do minor
726 * performance improvement and return false early.
728 if ( !$wgAdaptiveMessageCache ) {
733 # Try the individual message cache
734 $titleKey = wfMemcKey( 'messages', 'individual', $title );
735 $entry = $this->mMemc
->get( $titleKey );
737 if ( substr( $entry, 0, 1 ) === ' ' ) {
738 $this->mCache
[$code][$title] = $entry;
739 return substr( $entry, 1 );
740 } elseif ( $entry === '!NONEXISTENT' ) {
741 $this->mCache
[$code][$title] = '!NONEXISTENT';
744 # Corrupt/obsolete entry, delete it
745 $this->mMemc
->delete( $titleKey );
749 # Try loading it from the database
750 $revision = Revision
::newFromTitle( Title
::makeTitle( NS_MEDIAWIKI
, $title ) );
752 $message = $revision->getText();
753 if ($message === false) {
754 // A possibly temporary loading failure.
755 wfDebugLog( 'MessageCache', __METHOD__
. ": failed to load message page text for {$title->getDbKey()} ($code)" );
757 $this->mCache
[$code][$title] = ' ' . $message;
758 $this->mMemc
->set( $titleKey, ' ' . $message, $this->mExpiry
);
762 $this->mCache
[$code][$title] = '!NONEXISTENT';
763 $this->mMemc
->set( $titleKey, '!NONEXISTENT', $this->mExpiry
);
770 * @param $message string
771 * @param $interface bool
773 * @param $title Title
776 function transform( $message, $interface = false, $language = null, $title = null ) {
777 // Avoid creating parser if nothing to transform
778 if( strpos( $message, '{{' ) === false ) {
782 if ( $this->mInParser
) {
786 $parser = $this->getParser();
788 $popts = $this->getParserOptions();
789 $popts->setInterfaceMessage( $interface );
790 $popts->setTargetLanguage( $language );
792 $userlang = $popts->setUserLang( $language );
793 $this->mInParser
= true;
794 $message = $parser->transformMsg( $message, $popts, $title );
795 $this->mInParser
= false;
796 $popts->setUserLang( $userlang );
804 function getParser() {
805 global $wgParser, $wgParserConf;
806 if ( !$this->mParser
&& isset( $wgParser ) ) {
807 # Do some initialisation so that we don't have to do it twice
808 $wgParser->firstCallInit();
809 # Clone it and store it
810 $class = $wgParserConf['class'];
811 if ( $class == 'Parser_DiffTest' ) {
813 $this->mParser
= new $class( $wgParserConf );
815 $this->mParser
= clone $wgParser;
818 return $this->mParser
;
822 * @param $text string
823 * @param $title Title
824 * @param $linestart bool
825 * @param $interface bool
827 * @return ParserOutput
829 public function parse( $text, $title = null, $linestart = true, $interface = false, $language = null ) {
830 if ( $this->mInParser
) {
831 return htmlspecialchars( $text );
834 $parser = $this->getParser();
835 $popts = $this->getParserOptions();
838 $popts->setInterfaceMessage( true );
840 if ( $language !== null ) {
841 $popts->setTargetLanguage( $language );
844 wfProfileIn( __METHOD__
);
845 if ( !$title ||
!$title instanceof Title
) {
849 // Sometimes $wgTitle isn't set either...
851 # It's not uncommon having a null $wgTitle in scripts. See r80898
852 # Create a ghost title in such case
853 $title = Title
::newFromText( 'Dwimmerlaik' );
856 $this->mInParser
= true;
857 $res = $parser->parse( $text, $title, $popts, $linestart );
858 $this->mInParser
= false;
860 wfProfileOut( __METHOD__
);
865 $this->mDisable
= true;
869 $this->mDisable
= false;
873 * Clear all stored messages. Mainly used after a mass rebuild.
876 $langs = Language
::getLanguageNames( false );
877 foreach ( array_keys($langs) as $code ) {
879 $this->mMemc
->delete( wfMemcKey( 'messages', $code ) );
880 # Invalidate all local caches
881 $this->mMemc
->delete( wfMemcKey( 'messages', $code, 'hash' ) );
883 $this->mLoadedLanguages
= array();
890 public function figureMessage( $key ) {
891 global $wgLanguageCode;
892 $pieces = explode( '/', $key );
893 if( count( $pieces ) < 2 ) {
894 return array( $key, $wgLanguageCode );
897 $lang = array_pop( $pieces );
898 $validCodes = Language
::getLanguageNames();
899 if( !array_key_exists( $lang, $validCodes ) ) {
900 return array( $key, $wgLanguageCode );
903 $message = implode( '/', $pieces );
904 return array( $message, $lang );
907 public static function logMessages() {
908 wfProfileIn( __METHOD__
);
909 global $wgAdaptiveMessageCache;
910 if ( !$wgAdaptiveMessageCache ||
!self
::$instance instanceof MessageCache
) {
911 wfProfileOut( __METHOD__
);
915 $cachekey = wfMemckey( 'message-profiling' );
916 $cache = wfGetCache( CACHE_DB
);
917 $data = $cache->get( $cachekey );
923 $age = self
::$mAdaptiveDataAge;
924 $filterDate = substr( wfTimestamp( TS_MW
, time() - $age ), 0, 8 );
925 foreach ( array_keys( $data ) as $key ) {
926 if ( $key < $filterDate ) {
927 unset( $data[$key] );
931 $index = substr( wfTimestampNow(), 0, 8 );
932 if ( !isset( $data[$index] ) ) {
933 $data[$index] = array();
936 foreach ( self
::$instance->mRequestedMessages
as $message => $_ ) {
937 if ( !isset( $data[$index][$message] ) ) {
938 $data[$index][$message] = 0;
940 $data[$index][$message]++
;
943 $cache->set( $cachekey, $data );
944 wfProfileOut( __METHOD__
);
950 public function getMostUsedMessages() {
951 wfProfileIn( __METHOD__
);
952 $cachekey = wfMemcKey( 'message-profiling' );
953 $cache = wfGetCache( CACHE_DB
);
954 $data = $cache->get( $cachekey );
956 wfProfileOut( __METHOD__
);
962 foreach( $data as $messages ) {
963 foreach( $messages as $message => $count ) {
965 if ( !isset( $list[$key] ) ) {
968 $list[$key] +
= $count;
973 foreach ( $list as $message => $count ) {
974 if ( $count < intval( $max * self
::$mAdaptiveInclusionThreshold ) ) {
975 unset( $list[$message] );
979 wfProfileOut( __METHOD__
);
980 return array_keys( $list );
984 * Get all message keys stored in the message cache for a given language.
985 * If $code is the content language code, this will return all message keys
986 * for which MediaWiki:msgkey exists. If $code is another language code, this
987 * will ONLY return message keys for which MediaWiki:msgkey/$code exists.
988 * @param $code string
989 * @return array of message keys (strings)
991 public function getAllMessageKeys( $code ) {
993 $this->load( $code );
994 if ( !isset( $this->mCache
[$code] ) ) {
995 // Apparently load() failed
998 $cache = $this->mCache
[$code]; // Copy the cache
999 unset( $cache['VERSION'] ); // Remove the VERSION key
1000 $cache = array_diff( $cache, array( '!NONEXISTENT' ) ); // Remove any !NONEXISTENT keys
1001 // Keys may appear with a capital first letter. lcfirst them.
1002 return array_map( array( $wgContLang, 'lcfirst' ), array_keys( $cache ) );