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<?php /** * Bitrix Framework * @package bitrix * @subpackage main * @copyright 2001-2014 Bitrix / namespace Bitrix\Main\Data; use Bitrix\Main; class TaggedCache { protected $compCacheStack = []; protected $salt = false; protected $cacheTag = []; protected $wasTagged = false; protected $isMySql = false; protected $pool = false; public function __construct() { $this->pool = Main\Application::getInstance()->getConnectionPool(); $this->isMySql = ($this->pool->getConnection()->getType() === "mysql"); } protected function initDbCache($path) { if (!isset($this->cacheTag[$path])) { $this->cacheTag[$path] = []; $con = Main\Application::getConnection(); $sqlHelper = $con->getSqlHelper(); $this->pool->useMasterOnly(true); $rs = $con->query(" SELECT TAG FROM b_cache_tag WHERE SITE_ID = '".$sqlHelper->forSql(SITE_ID, 2)."' AND CACHE_SALT = '".$sqlHelper->forSql($this->salt, 4)."' AND RELATIVE_PATH = '".$sqlHelper->forSql($path)."' "); while ($ar = $rs->fetch()) { $this->cacheTag[$path][$ar["TAG"]] = true; } $this->pool->useMasterOnly(false); } } protected function initCompSalt() { if ($this->salt === false) { $this->salt = Cache::getSalt(); } } public function startTagCache($relativePath) { array_unshift($this->compCacheStack, [$relativePath, []]); } public function endTagCache() { $this->initCompSalt(); if ($this->wasTagged) { $this->pool->useMasterOnly(true); $con = Main\Application::getConnection(); $sqlHelper = $con->getSqlHelper(); // TODO: SITE_ID $siteIdForSql = $sqlHelper->forSql(SITE_ID, 2); $cacheSaltForSql = $this->salt; $strSqlPrefix = " INSERT ".($this->isMySql ? "IGNORE": "")." INTO b_cache_tag (SITE_ID, CACHE_SALT, RELATIVE_PATH, TAG) VALUES "; $maxValuesLen = $this->isMySql ? 2048: 0; $strSqlValues = ""; foreach ($this->compCacheStack as $arCompCache) { $path = $arCompCache[0]; if ($path <> '') { $this->initDbCache($path); $sqlRELATIVE_PATH = $sqlHelper->forSql($path, 255); $sql = ",\n('".$siteIdForSql."', '".$cacheSaltForSql."', '".$sqlRELATIVE_PATH."',"; foreach ($arCompCache[1] as $tag => $t) { if (!isset($this->cacheTag[$path][$tag])) { $strSqlValues .= $sql." '".$sqlHelper->forSql($tag, 100)."')"; if (mb_strlen($strSqlValues) > $maxValuesLen) { $con->queryExecute($strSqlPrefix.mb_substr($strSqlValues, 2)); $strSqlValues = ""; } $this->cacheTag[$path][$tag] = true; } } } } if ($strSqlValues <> '') { $con->queryExecute($strSqlPrefix.mb_substr($strSqlValues, 2)); } $this->pool->useMasterOnly(false); } array_shift($this->compCacheStack); } public function abortTagCache() { array_shift($this->compCacheStack); } public function registerTag($tag) { if (!empty($this->compCacheStack)) { $this->compCacheStack[0][1][$tag] = true; $this->wasTagged = true; } } public function clearByTag($tag) { $this->pool->useMasterOnly(true); $con = Main\Application::getConnection(); $helper = $con->getSqlHelper(); if ($tag === true) { $where = " WHERE TAG <> ''"; } else { $where = " WHERE TAG = '".$helper->forSql($tag)."'"; } $dirs = []; $rs = $con->query("SELECT ID, RELATIVE_PATH FROM b_cache_tag".$where); while ($ar = $rs->fetch()) { $dirs[$ar["RELATIVE_PATH"]][] = $ar["ID"]; } $con->queryExecute("DELETE FROM b_cache_tag".$where); $max_length = 102400; $sql = "DELETE FROM b_cache_tag WHERE ID in (%s)"; $where_list = array(); $length = 0; $cache = Cache::createInstance(); foreach ($dirs as $path => $ar) { $cache->cleanDir($path); unset($this->cacheTag[$path]); foreach ($ar as $cacheTagId) { $where = intval($cacheTagId); $length += mb_strlen($where) + 1; $where_list[] = $where; if ($length > $max_length) { $con->queryExecute(sprintf($sql, implode(",", $where_list))); $where_list = array(); $length = 0; } } } if ($where_list) { $con->queryExecute(sprintf($sql, implode(",", $where_list))); } $this->pool->useMasterOnly(false); } public function deleteAllTags() { $con = Main\Application::getConnection(); $con->query("TRUNCATE TABLE b_cache_tag"); } }

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