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Retro-fit proxy code to make it deterministic for older proxy manager implementations #26176

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Merged
merged 1 commit into from
Feb 17, 2018
Merged

Retro-fit proxy code to make it deterministic for older proxy manager implementations #26176

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39 changes: 36 additions & 3 deletions src/Symfony/Bridge/ProxyManager/LazyProxy/PhpDumper/ProxyDumper.php
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Original file line number Diff line number Diff line change
Expand Up @@ -13,6 +13,7 @@

use ProxyManager\Generator\ClassGenerator;
use ProxyManager\GeneratorStrategy\BaseGeneratorStrategy;
use ProxyManager\Version;
use Symfony\Component\DependencyInjection\Container;
use Symfony\Component\DependencyInjection\Definition;
use Symfony\Component\DependencyInjection\LazyProxy\PhpDumper\DumperInterface;
Expand Down Expand Up @@ -94,11 +95,35 @@ public function getProxyFactoryCode(Definition $definition, $id, $factoryCode =
*/
public function getProxyCode(Definition $definition)
{
return preg_replace(
$code = $this->classGenerator->generate($this->generateProxyClass($definition));

$code = preg_replace(
'/(\$this->initializer[0-9a-f]++) && \1->__invoke\(\$this->(valueHolder[0-9a-f]++), (.*?), \1\);/',
'$1 && ($1->__invoke(\$$2, $3, $1) || 1) && $this->$2 = \$$2;',
$this->classGenerator->generate($this->generateProxyClass($definition))
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you could even keep this code here

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I could but it’s less symmetric

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@nicolas-grekas is this replacement related to backporting some ProxyManager too, or would be also keep it after dropping support for ProxyManager 2.1 and older ?

If it is meant to stay, I would not try to make it symmetric with the feature backporting.

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this is Symfony-only feature, has been refused in ProxyManager (at least not merged yet), so not part of any versions of it

$code
);

if (version_compare(self::getProxyManagerVersion(), '2.2', '<')) {
$code = preg_replace(
'/((?:\$(?:this|initializer|instance)->)?(?:publicProperties|initializer|valueHolder))[0-9a-f]++/',
'${1}'.$this->getIdentifierSuffix($definition),
$code
);
}

return $code;
}

/**
* @return string
*/
private static function getProxyManagerVersion()
{
if (!\class_exists(Version::class)) {
return '0.0.1';
}

return defined(Version::class.'::VERSION') ? Version::VERSION : Version::getVersion();
}

/**
Expand All @@ -108,7 +133,7 @@ public function getProxyCode(Definition $definition)
*/
private function getProxyClassName(Definition $definition)
{
return preg_replace('/^.*\\\\/', '', $definition->getClass()).'_'.substr(hash('sha256', $definition->getClass().$this->salt), -7);
return preg_replace('/^.*\\\\/', '', $definition->getClass()).'_'.$this->getIdentifierSuffix($definition);
}

/**
Expand All @@ -122,4 +147,12 @@ private function generateProxyClass(Definition $definition)

return $generatedClass;
}

/**
* @return string
*/
private function getIdentifierSuffix(Definition $definition)
{
return substr(hash('sha256', $definition->getClass().$this->salt), -7);
}
}
8 changes: 8 additions & 0 deletions src/Symfony/Bridge/ProxyManager/Tests/LazyProxy/PhpDumper/ProxyDumperTest.php
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Original file line number Diff line number Diff line change
Expand Up @@ -61,6 +61,14 @@ public function testGetProxyCode()
);
}

public function testDeterministicProxyCode()
{
$definition = new Definition(__CLASS__);
$definition->setLazy(true);

$this->assertSame($this->dumper->getProxyCode($definition), $this->dumper->getProxyCode($definition));
}

public function testGetProxyFactoryCode()
{
$definition = new Definition(__CLASS__);
Expand Down