[Cache] Create NullAdapter to disable cache if needed
This commit is contained in:
parent
ea9d6e7235
commit
0519d22e7e
121
src/Symfony/Component/Cache/Adapter/NullAdapter.php
Normal file
121
src/Symfony/Component/Cache/Adapter/NullAdapter.php
Normal file
@ -0,0 +1,121 @@
|
||||
<?php
|
||||
|
||||
/*
|
||||
* This file is part of the Symfony package.
|
||||
*
|
||||
* (c) Fabien Potencier <fabien@symfony.com>
|
||||
*
|
||||
* For the full copyright and license information, please view the LICENSE
|
||||
* file that was distributed with this source code.
|
||||
*/
|
||||
|
||||
namespace Symfony\Component\Cache\Adapter;
|
||||
|
||||
use Psr\Cache\CacheItemInterface;
|
||||
use Symfony\Component\Cache\CacheItem;
|
||||
|
||||
/**
|
||||
* @author Titouan Galopin <galopintitouan@gmail.com>
|
||||
*/
|
||||
class NullAdapter implements AdapterInterface
|
||||
{
|
||||
private $createCacheItem;
|
||||
|
||||
public function __construct()
|
||||
{
|
||||
$this->createCacheItem = \Closure::bind(
|
||||
function ($key) {
|
||||
$item = new CacheItem();
|
||||
$item->key = $key;
|
||||
$item->isHit = false;
|
||||
|
||||
return $item;
|
||||
},
|
||||
$this,
|
||||
CacheItem::class
|
||||
);
|
||||
}
|
||||
|
||||
/**
|
||||
* {@inheritdoc}
|
||||
*/
|
||||
public function getItem($key)
|
||||
{
|
||||
$f = $this->createCacheItem;
|
||||
|
||||
return $f($key);
|
||||
}
|
||||
|
||||
/**
|
||||
* {@inheritdoc}
|
||||
*/
|
||||
public function getItems(array $keys = array())
|
||||
{
|
||||
return $this->generateItems($keys);
|
||||
}
|
||||
|
||||
/**
|
||||
* {@inheritdoc}
|
||||
*/
|
||||
public function hasItem($key)
|
||||
{
|
||||
return false;
|
||||
}
|
||||
|
||||
/**
|
||||
* {@inheritdoc}
|
||||
*/
|
||||
public function clear()
|
||||
{
|
||||
return true;
|
||||
}
|
||||
|
||||
/**
|
||||
* {@inheritdoc}
|
||||
*/
|
||||
public function deleteItem($key)
|
||||
{
|
||||
return true;
|
||||
}
|
||||
|
||||
/**
|
||||
* {@inheritdoc}
|
||||
*/
|
||||
public function deleteItems(array $keys)
|
||||
{
|
||||
return true;
|
||||
}
|
||||
|
||||
/**
|
||||
* {@inheritdoc}
|
||||
*/
|
||||
public function save(CacheItemInterface $item)
|
||||
{
|
||||
return false;
|
||||
}
|
||||
|
||||
/**
|
||||
* {@inheritdoc}
|
||||
*/
|
||||
public function saveDeferred(CacheItemInterface $item)
|
||||
{
|
||||
return false;
|
||||
}
|
||||
|
||||
/**
|
||||
* {@inheritdoc}
|
||||
*/
|
||||
public function commit()
|
||||
{
|
||||
return false;
|
||||
}
|
||||
|
||||
private function generateItems(array $keys)
|
||||
{
|
||||
$f = $this->createCacheItem;
|
||||
|
||||
foreach ($keys as $key) {
|
||||
yield $key => $f($key);
|
||||
}
|
||||
}
|
||||
}
|
124
src/Symfony/Component/Cache/Tests/Adapter/NullAdapterTest.php
Normal file
124
src/Symfony/Component/Cache/Tests/Adapter/NullAdapterTest.php
Normal file
@ -0,0 +1,124 @@
|
||||
<?php
|
||||
|
||||
/*
|
||||
* This file is part of the Symfony package.
|
||||
*
|
||||
* (c) Fabien Potencier <fabien@symfony.com>
|
||||
*
|
||||
* For the full copyright and license information, please view the LICENSE
|
||||
* file that was distributed with this source code.
|
||||
*/
|
||||
|
||||
namespace Symfony\Component\Cache\Tests\Adapter;
|
||||
|
||||
use Psr\Cache\CacheItemInterface;
|
||||
use Symfony\Component\Cache\Adapter\NullAdapter;
|
||||
|
||||
class NullAdapterTest extends \PHPUnit_Framework_TestCase
|
||||
{
|
||||
public function createCachePool()
|
||||
{
|
||||
return new NullAdapter();
|
||||
}
|
||||
|
||||
public function testGetItem()
|
||||
{
|
||||
$adapter = $this->createCachePool();
|
||||
|
||||
$item = $adapter->getItem('key');
|
||||
$this->assertFalse($item->isHit());
|
||||
$this->assertNull($item->get(), "Item's value must be null when isHit is false.");
|
||||
}
|
||||
|
||||
public function testHasItem()
|
||||
{
|
||||
$this->assertFalse($this->createCachePool()->hasItem('key'));
|
||||
}
|
||||
|
||||
public function testGetItems()
|
||||
{
|
||||
$adapter = $this->createCachePool();
|
||||
|
||||
$keys = array('foo', 'bar', 'baz', 'biz');
|
||||
|
||||
/** @var CacheItemInterface[] $items */
|
||||
$items = $adapter->getItems($keys);
|
||||
$count = 0;
|
||||
|
||||
foreach ($items as $key => $item) {
|
||||
$itemKey = $item->getKey();
|
||||
|
||||
$this->assertEquals($itemKey, $key, 'Keys must be preserved when fetching multiple items');
|
||||
$this->assertTrue(in_array($key, $keys), 'Cache key can not change.');
|
||||
$this->assertFalse($item->isHit());
|
||||
|
||||
// Remove $key for $keys
|
||||
foreach ($keys as $k => $v) {
|
||||
if ($v === $key) {
|
||||
unset($keys[$k]);
|
||||
}
|
||||
}
|
||||
|
||||
++$count;
|
||||
}
|
||||
|
||||
$this->assertSame(4, $count);
|
||||
}
|
||||
|
||||
public function testIsHit()
|
||||
{
|
||||
$adapter = $this->createCachePool();
|
||||
|
||||
$item = $adapter->getItem('key');
|
||||
$this->assertFalse($item->isHit());
|
||||
}
|
||||
|
||||
public function testClear()
|
||||
{
|
||||
$this->assertTrue($this->createCachePool()->clear());
|
||||
}
|
||||
|
||||
public function testDeleteItem()
|
||||
{
|
||||
$this->assertTrue($this->createCachePool()->deleteItem('key'));
|
||||
}
|
||||
|
||||
public function testDeleteItems()
|
||||
{
|
||||
$this->assertTrue($this->createCachePool()->deleteItems(array('key', 'foo', 'bar')));
|
||||
}
|
||||
|
||||
public function testSave()
|
||||
{
|
||||
$adapter = $this->createCachePool();
|
||||
|
||||
$item = $adapter->getItem('key');
|
||||
$this->assertFalse($item->isHit());
|
||||
$this->assertNull($item->get(), "Item's value must be null when isHit is false.");
|
||||
|
||||
$this->assertFalse($adapter->save($item));
|
||||
}
|
||||
|
||||
public function testDeferredSave()
|
||||
{
|
||||
$adapter = $this->createCachePool();
|
||||
|
||||
$item = $adapter->getItem('key');
|
||||
$this->assertFalse($item->isHit());
|
||||
$this->assertNull($item->get(), "Item's value must be null when isHit is false.");
|
||||
|
||||
$this->assertFalse($adapter->saveDeferred($item));
|
||||
}
|
||||
|
||||
public function testCommit()
|
||||
{
|
||||
$adapter = $this->createCachePool();
|
||||
|
||||
$item = $adapter->getItem('key');
|
||||
$this->assertFalse($item->isHit());
|
||||
$this->assertNull($item->get(), "Item's value must be null when isHit is false.");
|
||||
|
||||
$this->assertFalse($adapter->saveDeferred($item));
|
||||
$this->assertFalse($this->createCachePool()->commit());
|
||||
}
|
||||
}
|
Reference in New Issue
Block a user