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Commit6ef23f0

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[Cache] Add nonce based cache invalidation to ApcuAdapter
1 parentb85ab60 commit6ef23f0

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4 files changed

+45
-3
lines changed

4 files changed

+45
-3
lines changed

‎src/Symfony/Bundle/FrameworkBundle/DependencyInjection/FrameworkExtension.php‎

Lines changed: 1 addition & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -1037,6 +1037,7 @@ private function registerPropertyInfoConfiguration(array $config, ContainerBuild
10371037

10381038
privatefunctionregisterCacheConfiguration(array$config,ContainerBuilder$container,XmlFileLoader$loader)
10391039
{
1040+
$container->setParameter('kernel.cache_nonce',substr(base64_encode(md5(uniqid(mt_rand(),true),true)),0,4));
10401041
$container->getDefinition('cache.adapter.filesystem')->replaceArgument(2,$config['directory']);
10411042

10421043
foreach (array('doctrine','psr6','redis')as$name) {

‎src/Symfony/Bundle/FrameworkBundle/Resources/config/cache.xml‎

Lines changed: 1 addition & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -27,6 +27,7 @@
2727
<tagname="monolog.logger"channel="cache" />
2828
<argument /><!-- namespace-->
2929
<argument /><!-- default lifetime-->
30+
<argument>%kernel.cache_nonce%</argument>
3031
<callmethod="setLogger">
3132
<argumenttype="service"id="logger"on-invalid="ignore" />
3233
</call>

‎src/Symfony/Component/Cache/Adapter/ApcuAdapter.php‎

Lines changed: 28 additions & 3 deletions
Original file line numberDiff line numberDiff line change
@@ -18,7 +18,10 @@
1818
*/
1919
class ApcuAdapterextends AbstractAdapter
2020
{
21-
publicfunction__construct($namespace ='',$defaultLifetime =0)
21+
private$nonce;
22+
private$nonceLen;
23+
24+
publicfunction__construct($namespace ='',$defaultLifetime =0,$nonce =null)
2225
{
2326
if (!function_exists('apcu_fetch') || !ini_get('apc.enabled') || ('cli' ===PHP_SAPI && !ini_get('apc.enable_cli'))) {
2427
thrownewCacheException('APCu is not enabled');
@@ -27,14 +30,30 @@ public function __construct($namespace = '', $defaultLifetime = 0)
2730
ini_set('apc.use_request_time',0);
2831
}
2932
parent::__construct($namespace,$defaultLifetime);
33+
$this->nonce = (string)$nonce;
34+
$this->nonceLen =strlen($nonce);
3035
}
3136

3237
/**
3338
* {@inheritdoc}
3439
*/
3540
protectedfunctiondoFetch(array$ids)
3641
{
37-
returnapcu_fetch($ids);
42+
$values =apcu_fetch($ids);
43+
44+
if ($this->nonceLen) {
45+
foreach ($valuesas$id =>$v) {
46+
if (0 !==strpos($v,$this->nonce)) {
47+
apcu_delete($id);
48+
unset($values[$id]);
49+
}
50+
}
51+
foreach ($valuesas$id =>$v) {
52+
$values[$id] =unserialize(substr($v,$this->nonceLen));
53+
}
54+
}
55+
56+
return$values;
3857
}
3958

4059
/**
@@ -73,12 +92,18 @@ protected function doDelete(array $ids)
7392
protectedfunctiondoSave(array$values,$lifetime)
7493
{
7594
try {
95+
if ($this->nonceLen) {
96+
foreach ($valuesas$id =>$v) {
97+
$values[$id] =$this->nonce.serialize($v);
98+
}
99+
}
100+
76101
returnarray_keys(apcu_store($values,null,$lifetime));
77102
}catch (\Error$e) {
78103
}catch (\Exception$e) {
79104
}
80105

81-
if (1 ===count($values)) {
106+
if (!$this->nonceLen &&1 ===count($values)) {
82107
// Workaround https://github.com/krakjoe/apcu/issues/170
83108
apcu_delete(key($values));
84109
}

‎src/Symfony/Component/Cache/Tests/Adapter/ApcuAdapterTest.php‎

Lines changed: 15 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -43,4 +43,19 @@ public function testUnserializable()
4343
$item =$pool->getItem('foo');
4444
$this->assertFalse($item->isHit());
4545
}
46+
47+
publicfunctiontestNonce()
48+
{
49+
$namespace =str_replace('\\','.',__CLASS__);
50+
$pool1 =newApcuAdapter($namespace,0,'p1');
51+
$pool2 =newApcuAdapter($namespace,0,'p2');
52+
53+
$item =$pool1->getItem('foo');
54+
$this->assertFalse($item->isHit());
55+
$this->assertTrue($pool1->save($item->set('bar')));
56+
$item =$pool1->getItem('foo');
57+
$this->assertTrue($item->isHit());
58+
$item =$pool2->getItem('foo');
59+
$this->assertFalse($item->isHit());
60+
}
4661
}

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