N.1065 Fix performance issues (caches added on query build)

SVN:trunk[4943]
2026-02-13 07:24:13 +01:00 · 2017-09-27 09:37:43 +00:00
parent 43e4408df1
commit e785352050
4 changed files with 151 additions and 32 deletions
--- a/core/expressioncache.class.inc.php
+++ b/core/expressioncache.class.inc.php
@@ -0,0 +1,110 @@
+<?php
+// Copyright (c) 2010-2017 Combodo SARL
+//
+//   This file is part of iTop.
+//
+//   iTop is free software; you can redistribute it and/or modify
+//   it under the terms of the GNU Affero General Public License as published by
+//   the Free Software Foundation, either version 3 of the License, or
+//   (at your option) any later version.
+//
+//   iTop 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 Affero General Public License for more details.
+//
+//   You should have received a copy of the GNU Affero General Public License
+//   along with iTop. If not, see <http://www.gnu.org/licenses/>
+//
+
+class ExpressionCache
+{
+	static private $aCache = array();
+
+	static public function GetCachedExpression($sClass, $sAttCode)
+	{
+		// read current cache
+		@include_once (static::GetCacheFileName());
+
+		$oExpr = null;
+		$sKey = static::GetKey($sClass, $sAttCode);
+		if (array_key_exists($sKey, static::$aCache))
+		{
+			$oExpr =  static::$aCache[$sKey];
+		}
+		else
+		{
+			if (class_exists('ExpressionCacheData'))
+			{
+				if (array_key_exists($sKey, ExpressionCacheData::$aCache))
+				{
+					$sVal = ExpressionCacheData::$aCache[$sKey];
+					$oExpr = unserialize($sVal);
+					static::$aCache[$sKey] = $oExpr;
+				}
+			}
+		}
+		return $oExpr;
+	}
+
+
+	static public function Warmup()
+	{
+		$sFilePath = static::GetCacheFileName();
+
+		if (!is_file($sFilePath))
+		{
+			$content = <<<EOF
+<?php
+// Copyright (c) 2010-2017 Combodo SARL
+// Generated Expression Cache file
+
+class ExpressionCacheData
+{
+	static \$aCache =  array(
+EOF;
+
+			foreach(MetaModel::GetClasses() as $sClass)
+			{
+				$content .= static::GetSerializedExpression($sClass, 'friendlyname');
+				if (MetaModel::IsObsoletable($sClass))
+				{
+					$content .= static::GetSerializedExpression($sClass, 'obsolescence_flag');
+				}
+			}
+
+			$content .= <<<EOF
+	);
+}
+EOF;
+
+			file_put_contents($sFilePath, $content);
+		}
+	}
+
+	static private function GetSerializedExpression($sClass, $sAttCode)
+	{
+		$sKey = static::GetKey($sClass, $sAttCode);
+		$oExpr = DBObjectSearch::GetPolymorphicExpression($sClass, $sAttCode);
+		return "'".$sKey."' => '".serialize($oExpr)."',\n";
+	}
+
+	/**
+	 * @param $sClass
+	 * @param $sAttCode
+	 * @return string
+	 */
+	static private function GetKey($sClass, $sAttCode)
+	{
+		return $sClass.'::'.$sAttCode;
+	}
+
+	public static function GetCacheFileName()
+	{
+		return utils::GetCachePath().'expressioncache.php';
+	}
+
+}
+
+
+