/**
* Constructor
*
* @param CacheInvalidator $invalidator The invalidator instance.
* @param string $tagsHeader Header to use for tags, defaults to X-Cache-Tags.
*
* @throws UnsupportedProxyOperationException If CacheInvalidator does not support invalidate requests
*/
public function __construct(CacheInvalidator $invalidator, $tagsHeader = 'X-Cache-Tags')
{
if (!$invalidator->supports(CacheInvalidator::INVALIDATE)) {
throw UnsupportedProxyOperationException::cacheDoesNotImplement('BAN');
}
$this->invalidator = $invalidator;
$this->tagsHeader = $tagsHeader;
}
/**
* Invalidate URLs based on a regular expression for the URI, an optional
* content type and optional limit to certain hosts.
*
* The hosts parameter can either be a regular expression, e.g.
* '^(www\.)?(this|that)\.com$' or an array of exact host names, e.g.
* ['example.com', 'other.net']. If the parameter is empty, all hosts
* are matched.
*
* @see BanInterface::banPath()
*
* @param string $path Regular expression pattern for URI to
* invalidate.
* @param string $contentType Regular expression pattern for the content
* type to limit banning, for instance 'text'.
* @param array|string $hosts Regular expression of a host name or list of
* exact host names to limit banning.
*
* @throws UnsupportedProxyOperationException If HTTP cache does not support BAN requests
*
* @return $this
*/
public function invalidateRegex($path, $contentType = null, $hosts = null)
{
if (!$this->cache instanceof BanInterface) {
throw UnsupportedProxyOperationException::cacheDoesNotImplement('BAN');
}
$this->cache->banPath($path, $contentType, $hosts);
return $this;
}
/**
* Invalidate cache entries that contain any of the specified tags in their
* tag header.
*
* @param array $tags Cache tags
*
* @throws UnsupportedProxyOperationException If HTTP cache does not support BAN requests
*
* @return $this
*
* @deprecated Use TagHandler::invalidateTags instead.
*/
public function invalidateTags(array $tags)
{
if (!$this->tagHandler) {
throw UnsupportedProxyOperationException::cacheDoesNotImplement('BAN');
}
$this->tagHandler->invalidateTags($tags);
return $this;
}
/**
* Invalidate cache entries that contain any of the specified tags in their
* tag header.
*
* @see BanInterface::ban()
*
* @param array $tags Cache tags
*
* @throws UnsupportedProxyOperationException If HTTP cache does not support BAN requests
*
* @return $this
*/
public function invalidateTags(array $tags)
{
if (!$this->cache instanceof BanInterface) {
throw UnsupportedProxyOperationException::cacheDoesNotImplement('BAN');
}
$headers = array($this->getTagsHeader() => '('.implode('|', array_map('preg_quote', $tags)).')(,.+)?$');
$this->cache->ban($headers);
return $this;
}