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msd2/tracking/piwik/core/CacheId.php

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+<?php
+/**
+ * Piwik - free/libre analytics platform
+ *
+ * @link http://piwik.org
+ * @license http://www.gnu.org/licenses/gpl-3.0.html GPL v3 or later
+ *
+ */
+namespace Piwik;
+
+use Piwik\Plugin\Manager;
+
+class CacheId
+{
+    public static function languageAware($cacheId)
+    {
+        return $cacheId . '-' . Translate::getLanguageLoaded();
+    }
+
+    public static function pluginAware($cacheId)
+    {
+        $pluginManager = Manager::getInstance();
+        $pluginNames   = $pluginManager->getLoadedPluginsName();
+        $cacheId       = $cacheId . '-' . md5(implode('', $pluginNames));
+        $cacheId       = self::languageAware($cacheId);
+
+        return $cacheId;
+    }
+
+    public static function siteAware($cacheId, array $idSites = null)
+    {
+        if ($idSites === null) {
+            $idSites = self::getIdSiteList('idSite');
+            $cacheId .= self::idSiteListCacheKey($idSites);
+
+            $idSites = self::getIdSiteList('idSites');
+            $cacheId .= self::idSiteListCacheKey($idSites);
+
+            $idSites = self::getIdSiteList('idsite'); // tracker param
+            $cacheId .= self::idSiteListCacheKey($idSites);
+        } else {
+            $cacheId .= self::idSiteListCacheKey($idSites);
+        }
+
+        return $cacheId;
+    }
+
+    private static function getIdSiteList($queryParamName)
+    {
+        if (empty($_GET[$queryParamName])
+            && empty($_POST[$queryParamName])
+        ) {
+            return [];
+        }
+
+        $idSiteGetParam = [];
+        if (!empty($_GET[$queryParamName])) {
+            $value = $_GET[$queryParamName];
+            $idSiteGetParam = is_array($value) ? $value : explode(',', $value);
+        }
+
+        $idSitePostParam = [];
+        if (!empty($_POST[$queryParamName])) {
+            $value = $_POST[$queryParamName];
+            $idSitePostParam = is_array($value) ? $value : explode(',', $value);
+        }
+
+        $idSiteList = array_merge($idSiteGetParam, $idSitePostParam);
+        $idSiteList = array_map('intval', $idSiteList);
+        $idSiteList = array_unique($idSiteList);
+        sort($idSiteList);
+        return $idSiteList;
+    }
+
+    private static function idSiteListCacheKey($idSites)
+    {
+        if (empty($idSites)) {
+            return '';
+        }
+
+        if (count($idSites) <= 5) {
+            return '-' . implode('_', $idSites); // we keep the cache key readable when possible
+        } else {
+            return '-' . md5(implode('_', $idSites)); // we need to shorten it
+        }
+    }
+}