8000 Refactor behaviour triggered by a flag into separate classes. by mpdude · Pull Request #7782 · symfony/symfony · GitHub
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Refactor behaviour triggered by a flag into separate classes. #7782

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Refactor behaviour triggered by a flag into separate classes. #7782

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63 changes: 13 additions & 50 deletions src/Symfony/Component/Config/ConfigCache.php
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Original file line number Diff line number Diff line change
Expand Up @@ -15,17 +15,15 @@
use Symfony\Component\Filesystem\Filesystem;

/**
* ConfigCache manages PHP cache files.
*
* When debug is enabled, it knows when to flush the cache
* thanks to an array of ResourceInterface instances.
* ConfigCache is a backwards-compatible way of using the
* cache implementation classes.
*
* @author Fabien Potencier <fabien@symfony.com>
* @author Matthias Pigulla <mp@webfactory.de>
*/
class ConfigCache
{
private $debug;
private $file;
private $cacheImplementation;

/**
* Constructor.
Expand All @@ -35,8 +33,11 @@ class ConfigCache
*/
public function __construct($file, $debug)
{
8000 $this->file = $file;
$this->debug = (Boolean) $debug;
if ($debug) {
$this->cacheImplementation = new ResourceValidatingCache($file);
} else {
$this->cacheImplementation = new NonvalidatingCache($file);
}
}

/**
Expand All @@ -46,7 +47,7 @@ public function __construct($file, $debug)
*/
public function __toString()
{
return $this->file;
return $this->cacheImplementation->__toString();
}

/**
Expand All @@ -59,28 +60,7 @@ public function __toString()
*/
public function isFresh()
{
if (!is_file($this->file)) {
return false;
}

if (!$this->debug) {
return true;
}

$metadata = $this->getMetaFile();
if (!is_file($metadata)) {
return false;
}

$time = filemtime($this->file);
$meta = unserialize(file_get_contents($metadata));
foreach ($meta as $resource) {
if (!$resource->isFresh($time)) {
return false;
}
}

return true;
return $this->cacheImplementation->isFresh();
}

/**
Expand All @@ -89,27 +69,10 @@ public function isFresh()
* @param string $content The content to write in the cache
* @param ResourceInterface[] $metadata An array of ResourceInterface instances
*
* @throws \RuntimeException When cache file can't be wrote
* @throws \RuntimeException When the cache file cannot be written.
*/
public function write($content, array $metadata = null)
{
$mode = 0666 & ~umask();
$filesystem = new Filesystem();
$filesystem->dumpFile($this->file, $content, $mode);

if (null !== $metadata && true === $this->debug) {
$filesystem->dumpFile($this->getMetaFile(), serialize($metadata), $mode);
}
$this->cacheImplementation->write($content, $metadata);
}

/**
* Gets the meta file path.
*
* @return string The meta file path
*/
private function getMetaFile()
{
return $this->file.'.meta';
}

}
69 changes: 69 additions & 0 deletions src/Symfony/Component/Config/NonvalidatingCache.php
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Original file line number Diff line number Diff line change
@@ -0,0 +1,69 @@
<?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\Config;

use Symfony\Component\Config\Resource\ResourceInterface;
use Symfony\Component\Filesystem\Filesystem;

/**
* A cache that never expires once it has been written.
*
* @author Fabien Potencier <fabien@symfony.com>
* @author Matthias Pigulla <mp@webfactory.de>
*/
class NonvalidatingCache
{
protected $file;

/**
* Constructor.
*
* @param string $file The absolute cache path
*/
public function __construct($file)
{
$this->file = $file;
}

/**
* {@inheritdoc}
*/
public function __toString()
{
return $this->file;
}

/**
* By design, this method always returns true once the cache
* has been initialized.
*
* {@inheritdoc}
*/
public function isFresh()
{
if (!is_file($this->file)) {
return false;
}

return true;
}

/**
* This implementation ignores the metadata.
* {@inheritdoc}
*/
public function write($content, array $metadata = null)
{
$filesystem = new Filesystem();
$filesystem->dumpFile($this->file, $content, 0666 & ~umask());
}
}
86 changes: 86 additions & 0 deletions src/Symfony/Component/Config/ResourceValidatingCache.php
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Original file line number Diff line number Diff line change
@@ -0,0 +1,86 @@
<?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\Config;

use Symfony\Component\Config\Resource\ResourceInterface;
use Symfony\Component\Filesystem\Filesystem;

/**
* ConfigCache manages PHP cache files.
*
* When debug is enabled, it knows when to flush the cache
* thanks to an array of ResourceInterface instances.
*
* @author Fabien Potencier <fabien@symfony.com>
*/
class ResourceValidatingCache extends NonvalidatingCache
{

/**
* Checks if the cache is still fresh.
*
* This method evaluates the resources/metadata passed to the
* write() method.
*
* @return Boolean true if the cache is fresh, false otherwise
*/
public function isFresh()
{
if (!parent::isFresh()) {
return false;
}

$metadata = $this->getMetaFile();
if (!is_file($metadata)) {
return false;
}

$time = filemtime($this->file);
$meta = unserialize(file_get_contents($metadata));
foreach ($meta as $resource) {
if (!$resource->isFresh($time)) {
return false;
}
}

return true;
}

/**
* Writes cache.
*
* @param string $content The content to write in the cache
* @param ResourceInterface[] $metadata An array of ResourceInterface instances
*
* @throws \RuntimeException When cache file can't be wrote
*/
public function write($content, array $metadata = null)
{
if (null !== $metadata) {
$filesystem = new Filesystem();
$filesystem->dumpFile($this->getMetaFile(), serialize($metadata), 0666 & ~umask());
}

parent::write($content);
}

/**
* Gets the meta file path.
*
* @return string The meta file path
*/
private function getMetaFile()
{
return $this->file.'.meta';
}

}
0