Add abstract cache layer

app/Core/Cache.php

@@ -1,58 +0,0 @@
-<?php
-
-namespace Core;
-
-use Pimple\Container;
-
-abstract class Cache
-{
-    /**
-     * Container instance
-     *
-     * @access protected
-     * @var \Pimple\Container
-     */
-    protected $container;
-
-    abstract public function init();
-    abstract public function set($key, $value);
-    abstract public function get($key);
-    abstract public function flush();
-    abstract public function remove($key);
-
-    /**
-     * Constructor
-     *
-     * @access public
-     * @param  \Pimple\Container   $container
-     */
-    public function __construct(Container $container)
-    {
-        $this->container = $container;
-        $this->init();
-    }
-
-    /**
-     * Proxy cache
-     *
-     * Note: Arguments must be scalar types
-     *
-     * @access public
-     * @param  string    $container    Container name
-     * @param  string    $method       Container method
-     * @return mixed
-     */
-    public function proxy($container, $method)
-    {
-        $args = func_get_args();
-        $key = 'proxy_'.implode('_', $args);
-        $result = $this->get($key);
-
-        if ($result === null) {
-            $result = call_user_func_array(array($this->container[$container], $method), array_splice($args, 2));
-            $this->set($key, $result);
-        }
-
-        return $result;
-    }
-}

app/Core/Cache/Base.php

@@ -0,0 +1,38 @@
+<?php
+
+namespace Core\Cache;
+
+/**
+ * Base class for cache drivers
+ *
+ * @package  cache
+ * @author   Frederic Guillot
+ */
+abstract class Base
+{
+    /**
+     * Proxy cache
+     *
+     * Note: Arguments must be scalar types
+     *
+     * @access public
+     * @param  string    $class        Class instance
+     * @param  string    $method       Container method
+     * @return mixed
+     */
+    public function proxy($class, $method)
+    {
+        $args = func_get_args();
+        array_shift($args);
+
+        $key = 'proxy:'.get_class($class).':'.implode(':', $args);
+        $result = $this->get($key);
+
+        if ($result === null) {
+            $result = call_user_func_array(array($class, $method), array_splice($args, 1));
+            $this->set($key, $result);
+        }
+
+        return $result;
+    }
+}

app/Core/Cache/CacheInterface.php

@@ -0,0 +1,45 @@
+<?php
+
+namespace Core\Cache;
+
+/**
+ * Cache Interface
+ *
+ * @package  cache
+ * @author   Frederic Guillot
+ */
+interface CacheInterface
+{
+    /**
+     * Save a new value in the cache
+     *
+     * @access public
+     * @param  string  $key
+     * @param  string  $value
+     */
+    public function set($key, $value);
+
+    /**
+     * Fetch value from cache
+     *
+     * @access public
+     * @param  string  $key
+     * @return mixed            Null when not found, cached value otherwise
+     */
+    public function get($key);
+
+    /**
+     * Clear all cache
+     *
+     * @access public
+     */
+    public function flush();
+
+    /**
+     * Remove cached value
+     *
+     * @access public
+     * @param  string  $key
+     */
+    public function remove($key);
+}

app/Core/Cache/MemoryCache.php

@@ -0,0 +1,65 @@
+<?php
+
+namespace Core\Cache;
+
+/**
+ * Memory Cache
+ *
+ * @package  cache
+ * @author   Frederic Guillot
+ */
+class MemoryCache extends Base implements CacheInterface
+{
+    /**
+     * Container
+     *
+     * @access private
+     * @var array
+     */
+    private $storage = array();
+
+    /**
+     * Save a new value in the cache
+     *
+     * @access public
+     * @param  string  $key
+     * @param  string  $value
+     */
+    public function set($key, $value)
+    {
+        $this->storage[$key] = $value;
+    }
+
+    /**
+     * Fetch value from cache
+     *
+     * @access public
+     * @param  string  $key
+     * @return mixed            Null when not found, cached value otherwise
+     */
+    public function get($key)
+    {
+        return isset($this->storage[$key]) ? $this->storage[$key] : null;
+    }
+
+    /**
+     * Clear all cache
+     *
+     * @access public
+     */
+    public function flush()
+    {
+        $this->storage = array();
+    }
+
+    /**
+     * Remove cached value
+     *
+     * @access public
+     * @param  string  $key
+     */
+    public function remove($key)
+    {
+        unset($this->storage[$key]);
+    }
+}

app/Core/MemoryCache.php

@@ -1,32 +0,0 @@
-<?php
-
-namespace Core;
-
-class MemoryCache extends Cache
-{
-    private $storage = array();
-
-    public function init()
-    {
-    }
-
-    public function set($key, $value)
-    {
-        $this->storage[$key] = $value;
-    }
-
-    public function get($key)
-    {
-        return isset($this->storage[$key]) ? $this->storage[$key] : null;
-    }
-
-    public function flush()
-    {
-        $this->storage = array();
-    }
-
-    public function remove($key)
-    {
-        unset($this->storage[$key]);
-    }
-}