Add new CacheProxy

cache/Cache.php

@@ -146,7 +146,7 @@ class SS_Cache {
 	 * @param string $frontend (optional) The type of Zend_Cache frontend
 	 * @param array $frontendOptions (optional) Any frontend options to use.
 	 *
-	 * @return Zend_Cache_Core The cache object
+	 * @return CacheProxy
 	 */
 	public static function factory($for, $frontend='Output', $frontendOptions=null) {
 		self::init();
@@ -188,8 +188,10 @@ class SS_Cache {
 
 		require_once 'Zend/Cache.php';
 
-		return Zend_Cache::factory(
-			$frontend, $backend[0], $frontendOptions, $backend[1]
-		);
+        $container = Zend_Cache::factory(
+            $frontend, $backend[0], $frontendOptions, $backend[1]
+        );
+
+		return Injector::inst()->createWithArgs('CacheProxy', [$container]);
 	}
 }

cache/CacheProxy.php

@@ -0,0 +1,149 @@
+<?php
+
+require_once 'Zend/Cache.php';
+
+class CacheProxy extends Zend_Cache_Core
+{
+    /**
+     * @var Zend_Cache_Backend|Zend_Cache_Backend_ExtendedInterface
+     */
+    protected $container;
+
+    /**
+     * CacheProxy constructor.
+     * @param Zend_Cache_Core $container
+     */
+    public function __construct(Zend_Cache_Core $container)
+    {
+        $this->container = $container;
+
+        parent::__construct();
+    }
+
+    /**
+     * @param array $directives
+     */
+    public function setDirectives($directives)
+    {
+        $this->container->setDirectives($directives);
+    }
+
+    public function setConfig(Zend_Config $config)
+    {
+        return $this->container->setConfig($config);
+    }
+
+    public function setBackend(Zend_Cache_Backend $backendObject)
+    {
+        return $this->container->setBackend($backendObject);
+    }
+
+    public function getBackend()
+    {
+        return $this->container->getBackend();
+    }
+
+    /**
+     * @param string $name
+     * @param mixed $value
+     */
+    public function setOption($name, $value)
+    {
+        $this->container->setOption($name, $value);
+    }
+
+    public function getOption($name)
+    {
+        return $this->container->getOption($name);
+    }
+
+    public function setLifetime($newLifetime)
+    {
+        return $this->container->setLifetime($newLifetime);
+    }
+
+    public function getIds()
+    {
+        return $this->container->getIds();
+    }
+
+    public function getTags()
+    {
+        return $this->container->getTags();
+    }
+
+    public function getIdsMatchingTags($tags = array())
+    {
+        return $this->container->getIdsMatchingTags($tags);
+    }
+
+    public function getIdsNotMatchingTags($tags = array())
+    {
+        return $this->container->getIdsNotMatchingTags($tags);
+    }
+
+    public function getIdsMatchingAnyTags($tags = array())
+    {
+        return $this->container->getIdsMatchingAnyTags($tags);
+    }
+
+    public function getFillingPercentage()
+    {
+        return $this->container->getFillingPercentage();
+    }
+
+    public function getMetadatas($id)
+    {
+        return $this->container->getMetadatas($this->createKey($id));
+    }
+
+    public function touch($id, $extraLifetime)
+    {
+        return $this->container->touch($this->createKey($id), $extraLifetime);
+    }
+
+    public function load($id, $doNotTestCacheValidity = false, $doNotUnserialize = false)
+    {
+        return $this->container->load($this->createKey($id), $doNotTestCacheValidity, $doNotUnserialize);
+    }
+
+    public function test($id)
+    {
+        return $this->container->test($this->createKey($id));
+    }
+
+    public function save($data, $id = null, $tags = array(), $specificLifetime = false, $priority = 8)
+    {
+        return $this->container->save(
+            $data,
+            $this->createKey($id),
+            $tags,
+            $specificLifetime,
+            $priority
+        );
+    }
+
+    public function remove($id)
+    {
+        return $this->container->remove($this->createKey($id));
+    }
+
+    public function clean($mode = Zend_Cache::CLEANING_MODE_ALL, $tags = array())
+    {
+        return $this->container->clean($mode, $tags);
+    }
+
+    /**
+     * Creates a dynamic key based on versioned state
+     * @param $key
+     * @return string
+     */
+    protected function createKey($key)
+    {
+        $state = Versioned::get_reading_mode();
+        if ($state) {
+            return $key . '_' . md5($state);
+        }
+        return $key;
+    }
+}

tests/cache/CacheTest.php

@@ -2,7 +2,12 @@
 
 class CacheTest extends SapphireTest {
 
-	public function testCacheBasics() {
+    public function setUpOnce() {
+        parent::setUpOnce();
+        Versioned::set_reading_mode('Stage.Live');
+    }
+
+    public function testCacheBasics() {
 		$cache = SS_Cache::factory('test');
 
 		$cache->save('Good', 'cachekey');
@@ -64,5 +69,28 @@ class CacheTest extends SapphireTest {
 		$this->assertEquals(1200, $cache->getOption('lifetime'));
 	}
 
+	public function testVersionedCacheSegmentation() {
+        $cacheInstance = SS_Cache::factory('versioned');
+        $cacheInstance->clean();
+
+        Versioned::set_reading_mode('Stage.Live');
+        $result = $cacheInstance->load('test');
+        $this->assertFalse($result);
+        $cacheInstance->save('uncle', 'test');
+        $this->assertEquals('uncle', $cacheInstance->load('test'));
+        Versioned::set_reading_mode('Stage.Stage');
+        $this->assertFalse($cacheInstance->load('test'));
+        $cacheInstance->save('cheese', 'test');
+        $cacheInstance->save('bar', 'foo');
+        $this->assertEquals('cheese', $cacheInstance->load('test'));
+        $this->assertEquals('bar', $cacheInstance->load('foo'));
+        Versioned::set_reading_mode('Stage.Live');
+        $this->assertFalse($cacheInstance->load('foo'));
+        $this->assertEquals('uncle', $cacheInstance->load('test'));
+
+        $cacheInstance->clean();
+
+    }
+
 }