PHP HTMLFileCache::isCacheGood方法代碼示例

 /**
  * checkLastModified returns true if it has taken care of all
  * output to the client that is necessary for this request.
  * (that is, it has sent a cached version of the page)
  *
  * @return bool True if cached version send, false otherwise
  */
 protected function tryFileCache()
 {
     static $called = false;
     if ($called) {
         wfDebug("Article::tryFileCache(): called twice!?\n");
         return false;
     }
     $called = true;
     if ($this->isFileCacheable()) {
         $cache = new HTMLFileCache($this->getTitle(), 'view');
         if ($cache->isCacheGood($this->mPage->getTouched())) {
             wfDebug("Article::tryFileCache(): about to load file\n");
             $cache->loadFromFileCache($this->getContext());
             return true;
         } else {
             wfDebug("Article::tryFileCache(): starting buffer\n");
             ob_start(array(&$cache, 'saveToFileCache'));
         }
     } else {
         wfDebug("Article::tryFileCache(): not cacheable\n");
     }
     return false;
 }

 /**
  * Print the history page for an article.
  */
 function onView()
 {
     $out = $this->getOutput();
     $request = $this->getRequest();
     /**
      * Allow client caching.
      */
     if ($out->checkLastModified($this->page->getTouched())) {
         return;
         // Client cache fresh and headers sent, nothing more to do.
     }
     $this->preCacheMessages();
     $config = $this->context->getConfig();
     # Fill in the file cache if not set already
     if (HTMLFileCache::useFileCache($this->getContext())) {
         $cache = new HTMLFileCache($this->getTitle(), 'history');
         if (!$cache->isCacheGood()) {
             ob_start([&$cache, 'saveToFileCache']);
         }
     }
     // Setup page variables.
     $out->setFeedAppendQuery('action=history');
     $out->addModules('mediawiki.action.history');
     $out->addModuleStyles(['mediawiki.action.history.styles', 'mediawiki.special.changeslist']);
     if ($config->get('UseMediaWikiUIEverywhere')) {
         $out = $this->getOutput();
         $out->addModuleStyles(['mediawiki.ui.input', 'mediawiki.ui.checkbox']);
     }
     // Handle atom/RSS feeds.
     $feedType = $request->getVal('feed');
     if ($feedType) {
         $this->feed($feedType);
         return;
     }
     $this->addHelpLink('//meta.wikimedia.org/wiki/Special:MyLanguage/Help:Page_history', true);
     // Fail nicely if article doesn't exist.
     if (!$this->page->exists()) {
         global $wgSend404Code;
         if ($wgSend404Code) {
             $out->setStatusCode(404);
         }
         $out->addWikiMsg('nohistory');
         # show deletion/move log if there is an entry
         LogEventsList::showLogExtract($out, ['delete', 'move'], $this->getTitle(), '', ['lim' => 10, 'conds' => ["log_action != 'revision'"], 'showIfEmpty' => false, 'msgKey' => ['moveddeleted-notice']]);
         return;
     }
     /**
      * Add date selector to quickly get to a certain time
      */
     $year = $request->getInt('year');
     $month = $request->getInt('month');
     $tagFilter = $request->getVal('tagfilter');
     $tagSelector = ChangeTags::buildTagFilterSelector($tagFilter);
     /**
      * Option to show only revisions that have been (partially) hidden via RevisionDelete
      */
     if ($request->getBool('deleted')) {
         $conds = ['rev_deleted != 0'];
     } else {
         $conds = [];
     }
     if ($this->getUser()->isAllowed('deletedhistory')) {
         $checkDeleted = Xml::checkLabel($this->msg('history-show-deleted')->text(), 'deleted', 'mw-show-deleted-only', $request->getBool('deleted')) . "\n";
     } else {
         $checkDeleted = '';
     }
     // Add the general form
     $action = htmlspecialchars(wfScript());
     $out->addHTML("<form action=\"{$action}\" method=\"get\" id=\"mw-history-searchform\">" . Xml::fieldset($this->msg('history-fieldset-title')->text(), false, ['id' => 'mw-history-search']) . Html::hidden('title', $this->getTitle()->getPrefixedDBkey()) . "\n" . Html::hidden('action', 'history') . "\n" . Xml::dateMenu($year == null ? MWTimestamp::getLocalInstance()->format('Y') : $year, $month) . '&#160;' . ($tagSelector ? implode('&#160;', $tagSelector) . '&#160;' : '') . $checkDeleted . Html::submitButton($this->msg('historyaction-submit')->text(), [], ['mw-ui-progressive']) . "\n" . '</fieldset></form>');
     Hooks::run('PageHistoryBeforeList', [&$this->page, $this->getContext()]);
     // Create and output the list.
     $pager = new HistoryPager($this, $year, $month, $tagFilter, $conds);
     $out->addHTML($pager->getNavigationBar() . $pager->getBody() . $pager->getNavigationBar());
     $out->preventClickjacking($pager->getPreventClickjacking());
 }

 private function main()
 {
     global $wgTitle;
     wfProfileIn(__METHOD__);
     $request = $this->context->getRequest();
     // Send Ajax requests to the Ajax dispatcher.
     if ($this->config->get('UseAjax') && $request->getVal('action', 'view') == 'ajax') {
         // Set a dummy title, because $wgTitle == null might break things
         $title = Title::makeTitle(NS_MAIN, 'AJAX');
         $this->context->setTitle($title);
         $wgTitle = $title;
         $dispatcher = new AjaxDispatcher($this->config);
         $dispatcher->performAction($this->context->getUser());
         wfProfileOut(__METHOD__);
         return;
     }
     // Get title from request parameters,
     // is set on the fly by parseTitle the first time.
     $title = $this->getTitle();
     $action = $this->getAction();
     $wgTitle = $title;
     // If the user has forceHTTPS set to true, or if the user
     // is in a group requiring HTTPS, or if they have the HTTPS
     // preference set, redirect them to HTTPS.
     // Note: Do this after $wgTitle is setup, otherwise the hooks run from
     // isLoggedIn() will do all sorts of weird stuff.
     if ($request->getProtocol() == 'http' && ($request->getCookie('forceHTTPS', '') || $request->getCookie('forceHTTPS') || $this->context->getUser()->isLoggedIn() && $this->context->getUser()->requiresHTTPS())) {
         $oldUrl = $request->getFullRequestURL();
         $redirUrl = preg_replace('#^http://#', 'https://', $oldUrl);
         // ATTENTION: This hook is likely to be removed soon due to overall design of the system.
         if (wfRunHooks('BeforeHttpsRedirect', array($this->context, &$redirUrl))) {
             if ($request->wasPosted()) {
                 // This is weird and we'd hope it almost never happens. This
                 // means that a POST came in via HTTP and policy requires us
                 // redirecting to HTTPS. It's likely such a request is going
                 // to fail due to post data being lost, but let's try anyway
                 // and just log the instance.
                 //
                 // @todo FIXME: See if we could issue a 307 or 308 here, need
                 // to see how clients (automated & browser) behave when we do
                 wfDebugLog('RedirectedPosts', "Redirected from HTTP to HTTPS: {$oldUrl}");
             }
             // Setup dummy Title, otherwise OutputPage::redirect will fail
             $title = Title::newFromText(NS_MAIN, 'REDIR');
             $this->context->setTitle($title);
             $output = $this->context->getOutput();
             // Since we only do this redir to change proto, always send a vary header
             $output->addVaryHeader('X-Forwarded-Proto');
             $output->redirect($redirUrl);
             $output->output();
             wfProfileOut(__METHOD__);
             return;
         }
     }
     if ($this->config->get('UseFileCache') && $title->getNamespace() >= 0) {
         wfProfileIn('main-try-filecache');
         if (HTMLFileCache::useFileCache($this->context)) {
             // Try low-level file cache hit
             $cache = new HTMLFileCache($title, $action);
             if ($cache->isCacheGood()) {
                 // Check incoming headers to see if client has this cached
                 $timestamp = $cache->cacheTimestamp();
                 if (!$this->context->getOutput()->checkLastModified($timestamp)) {
                     $cache->loadFromFileCache($this->context);
                 }
                 // Do any stats increment/watchlist stuff
                 // Assume we're viewing the latest revision (this should always be the case with file cache)
                 $this->context->getWikiPage()->doViewUpdates($this->context->getUser());
                 // Tell OutputPage that output is taken care of
                 $this->context->getOutput()->disable();
                 wfProfileOut('main-try-filecache');
                 wfProfileOut(__METHOD__);
                 return;
             }
         }
         wfProfileOut('main-try-filecache');
     }
     // Actually do the work of the request and build up any output
     $this->performRequest();
     // Either all DB and deferred updates should happen or none.
     // The later should not be cancelled due to client disconnect.
     ignore_user_abort(true);
     // Now commit any transactions, so that unreported errors after
     // output() don't roll back the whole DB transaction
     wfGetLBFactory()->commitMasterChanges();
     // Output everything!
     $this->context->getOutput()->output();
     wfProfileOut(__METHOD__);
 }

 private function main()
 {
     global $wgTitle;
     $output = $this->context->getOutput();
     $request = $this->context->getRequest();
     // Send Ajax requests to the Ajax dispatcher.
     if ($this->config->get('UseAjax') && $request->getVal('action') === 'ajax') {
         // Set a dummy title, because $wgTitle == null might break things
         $title = Title::makeTitle(NS_SPECIAL, 'Badtitle/performing an AJAX call in ' . __METHOD__);
         $this->context->setTitle($title);
         $wgTitle = $title;
         $dispatcher = new AjaxDispatcher($this->config);
         $dispatcher->performAction($this->context->getUser());
         return;
     }
     // Get title from request parameters,
     // is set on the fly by parseTitle the first time.
     $title = $this->getTitle();
     $action = $this->getAction();
     $wgTitle = $title;
     // Set DB query expectations for this HTTP request
     $trxLimits = $this->config->get('TrxProfilerLimits');
     $trxProfiler = Profiler::instance()->getTransactionProfiler();
     $trxProfiler->setLogger(LoggerFactory::getInstance('DBPerformance'));
     if ($request->hasSafeMethod()) {
         $trxProfiler->setExpectations($trxLimits['GET'], __METHOD__);
     } else {
         $trxProfiler->setExpectations($trxLimits['POST'], __METHOD__);
     }
     // If the user has forceHTTPS set to true, or if the user
     // is in a group requiring HTTPS, or if they have the HTTPS
     // preference set, redirect them to HTTPS.
     // Note: Do this after $wgTitle is setup, otherwise the hooks run from
     // isLoggedIn() will do all sorts of weird stuff.
     if ($request->getProtocol() == 'http' && preg_match('#^https://#', wfExpandUrl($request->getRequestURL(), PROTO_HTTPS)) && ($request->getSession()->shouldForceHTTPS() || $request->getCookie('forceHTTPS', '') || $request->getCookie('forceHTTPS') || $this->context->getUser()->isLoggedIn() && $this->context->getUser()->requiresHTTPS())) {
         $oldUrl = $request->getFullRequestURL();
         $redirUrl = preg_replace('#^http://#', 'https://', $oldUrl);
         // ATTENTION: This hook is likely to be removed soon due to overall design of the system.
         if (Hooks::run('BeforeHttpsRedirect', [$this->context, &$redirUrl])) {
             if ($request->wasPosted()) {
                 // This is weird and we'd hope it almost never happens. This
                 // means that a POST came in via HTTP and policy requires us
                 // redirecting to HTTPS. It's likely such a request is going
                 // to fail due to post data being lost, but let's try anyway
                 // and just log the instance.
                 // @todo FIXME: See if we could issue a 307 or 308 here, need
                 // to see how clients (automated & browser) behave when we do
                 wfDebugLog('RedirectedPosts', "Redirected from HTTP to HTTPS: {$oldUrl}");
             }
             // Setup dummy Title, otherwise OutputPage::redirect will fail
             $title = Title::newFromText('REDIR', NS_MAIN);
             $this->context->setTitle($title);
             // Since we only do this redir to change proto, always send a vary header
             $output->addVaryHeader('X-Forwarded-Proto');
             $output->redirect($redirUrl);
             $output->output();
             return;
         }
     }
     if ($title->canExist() && HTMLFileCache::useFileCache($this->context)) {
         // Try low-level file cache hit
         $cache = new HTMLFileCache($title, $action);
         if ($cache->isCacheGood()) {
             // Check incoming headers to see if client has this cached
             $timestamp = $cache->cacheTimestamp();
             if (!$output->checkLastModified($timestamp)) {
                 $cache->loadFromFileCache($this->context);
             }
             // Do any stats increment/watchlist stuff, assuming user is viewing the
             // latest revision (which should always be the case for file cache)
             $this->context->getWikiPage()->doViewUpdates($this->context->getUser());
             // Tell OutputPage that output is taken care of
             $output->disable();
             return;
         }
     }
     // Actually do the work of the request and build up any output
     $this->performRequest();
     // GUI-ify and stash the page output in MediaWiki::doPreOutputCommit() while
     // ChronologyProtector synchronizes DB positions or slaves accross all datacenters.
     $buffer = null;
     $outputWork = function () use($output, &$buffer) {
         if ($buffer === null) {
             $buffer = $output->output(true);
         }
         return $buffer;
     };
     // Now commit any transactions, so that unreported errors after
     // output() don't roll back the whole DB transaction and so that
     // we avoid having both success and error text in the response
     $this->doPreOutputCommit($outputWork);
     // Now send the actual output
     print $outputWork();
 }

 public function execute()
 {
     global $wgRequestTime;
     if (!$this->enabled) {
         $this->error("Nothing to do -- \$wgUseFileCache is disabled.", true);
     }
     $start = $this->getOption('start', "0");
     if (!ctype_digit($start)) {
         $this->error("Invalid value for start parameter.", true);
     }
     $start = intval($start);
     $end = $this->getOption('end', "0");
     if (!ctype_digit($end)) {
         $this->error("Invalid value for end parameter.", true);
     }
     $end = intval($end);
     $this->output("Building content page file cache from page {$start}!\n");
     $dbr = $this->getDB(DB_REPLICA);
     $overwrite = $this->getOption('overwrite', false);
     $start = $start > 0 ? $start : $dbr->selectField('page', 'MIN(page_id)', false, __METHOD__);
     $end = $end > 0 ? $end : $dbr->selectField('page', 'MAX(page_id)', false, __METHOD__);
     if (!$start) {
         $this->error("Nothing to do.", true);
     }
     $_SERVER['HTTP_ACCEPT_ENCODING'] = 'bgzip';
     // hack, no real client
     # Do remaining chunk
     $end += $this->mBatchSize - 1;
     $blockStart = $start;
     $blockEnd = $start + $this->mBatchSize - 1;
     $dbw = $this->getDB(DB_MASTER);
     // Go through each page and save the output
     while ($blockEnd <= $end) {
         // Get the pages
         $res = $dbr->select('page', ['page_namespace', 'page_title', 'page_id'], ['page_namespace' => MWNamespace::getContentNamespaces(), "page_id BETWEEN {$blockStart} AND {$blockEnd}"], __METHOD__, ['ORDER BY' => 'page_id ASC', 'USE INDEX' => 'PRIMARY']);
         $this->beginTransaction($dbw, __METHOD__);
         // for any changes
         foreach ($res as $row) {
             $rebuilt = false;
             $title = Title::makeTitleSafe($row->page_namespace, $row->page_title);
             if (null == $title) {
                 $this->output("Page {$row->page_id} has bad title\n");
                 continue;
                 // broken title?
             }
             $context = new RequestContext();
             $context->setTitle($title);
             $article = Article::newFromTitle($title, $context);
             $context->setWikiPage($article->getPage());
             // If the article is cacheable, then load it
             if ($article->isFileCacheable(HTMLFileCache::MODE_REBUILD)) {
                 $viewCache = new HTMLFileCache($title, 'view');
                 $historyCache = new HTMLFileCache($title, 'history');
                 if ($viewCache->isCacheGood() && $historyCache->isCacheGood()) {
                     if ($overwrite) {
                         $rebuilt = true;
                     } else {
                         $this->output("Page '{$title}' (id {$row->page_id}) already cached\n");
                         continue;
                         // done already!
                     }
                 }
                 MediaWiki\suppressWarnings();
                 // header notices
                 // Cache ?action=view
                 $wgRequestTime = microtime(true);
                 # bug 22852
                 ob_start();
                 $article->view();
                 $context->getOutput()->output();
                 $context->getOutput()->clearHTML();
                 $viewHtml = ob_get_clean();
                 $viewCache->saveToFileCache($viewHtml);
                 // Cache ?action=history
                 $wgRequestTime = microtime(true);
                 # bug 22852
                 ob_start();
                 Action::factory('history', $article, $context)->show();
                 $context->getOutput()->output();
                 $context->getOutput()->clearHTML();
                 $historyHtml = ob_get_clean();
                 $historyCache->saveToFileCache($historyHtml);
                 MediaWiki\restoreWarnings();
                 if ($rebuilt) {
                     $this->output("Re-cached page '{$title}' (id {$row->page_id})...");
                 } else {
                     $this->output("Cached page '{$title}' (id {$row->page_id})...");
                 }
                 $this->output("[view: " . strlen($viewHtml) . " bytes; " . "history: " . strlen($historyHtml) . " bytes]\n");
             } else {
                 $this->output("Page '{$title}' (id {$row->page_id}) not cacheable\n");
             }
         }
         $this->commitTransaction($dbw, __METHOD__);
         // commit any changes (just for sanity)
         $blockStart += $this->mBatchSize;
         $blockEnd += $this->mBatchSize;
     }
     $this->output("Done!\n");
 }