public function testInvalidateTags()
{
$cacheInvalidator = new CacheInvalidator($this->getProxyClient());
$this->assertMiss($this->getResponse('/tags.php'));
$this->assertHit($this->getResponse('/tags.php'));
$cacheInvalidator->invalidateTags(array('tag1'))->flush();
$this->assertMiss($this->getResponse('/tags.php'));
}
/**
* Invalidate cache entries that contain any of the specified tags in their
* tag header.
*
* @param array $tags Cache tags
*
* @return $this
*/
public function invalidateTags(array $tags)
{
$tagExpression = sprintf('(%s)(,.+)?$', implode('|', array_map('preg_quote', $this->escapeTags($tags))));
$headers = array($this->tagsHeader => $tagExpression);
$this->invalidator->invalidate($headers);
return $this;
}
/**
* @return void
*/
protected function execute()
{
try {
$this->cacheInvalidator->flush();
} catch (ExceptionCollection $exceptions) {
foreach ($exceptions as $exception) {
if ($exception instanceof ProxyResponseException) {
$this->systemLogger->log(sprintf('Error calling Varnish with BAN request (cannot connect to the caching proxy). Error %s', $exception->getMessage()), LOG_ERR);
} elseif ($exception instanceof ProxyUnreachableException) {
$this->systemLogger->log(sprintf('Error calling Varnish with BAN request (caching proxy returned an error response). Error %s', $exception->getMessage()), LOG_ERR);
} else {
$this->systemLogger->log(sprintf('Error calling Varnish with BAN request. Error %s', $exception->getMessage()), LOG_ERR);
}
}
}
}
/**
* Invalidate cache entries that contain any of the specified tags in their
* tag header.
*
* @param array $tags Cache tags
*
* @return $this
*/
public function invalidateTags(array $tags)
{
$escapedTags = array_map('preg_quote', $this->escapeTags($tags));
if (mb_strlen(implode('|', $escapedTags)) >= $this->headerLength) {
/*
* estimate the amount of tags to invalidate by dividing the max
* header length by the largest tag (minus 1 for the implode character)
*/
$tagsize = max(array_map('mb_strlen', $escapedTags));
$elems = floor($this->headerLength / ($tagsize - 1)) ?: 1;
} else {
$elems = count($escapedTags);
}
foreach (array_chunk($escapedTags, $elems) as $tagchunk) {
$tagExpression = sprintf('(%s)(,.+)?$', implode('|', $tagchunk));
$headers = array($this->tagsHeader => $tagExpression);
$this->invalidator->invalidate($headers);
}
return $this;
}
/**
* Constructor
*
* @param ProxyClientInterface $cache HTTP cache proxy client
* @param UrlGeneratorInterface $urlGenerator Symfony route generator
*/
public function __construct(ProxyClientInterface $cache, UrlGeneratorInterface $urlGenerator)
{
parent::__construct($cache);
$this->urlGenerator = $urlGenerator;
}
public function testEventDispatcher()
{
$proxyClient = new Varnish(array('localhost'));
$cacheInvalidator = new CacheInvalidator($proxyClient);
$eventDispatcher = new EventDispatcher();
$cacheInvalidator->setEventDispatcher($eventDispatcher);
$this->assertSame($eventDispatcher, $cacheInvalidator->getEventDispatcher());
}
