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<?php
/**
* A metadata object, used by other components in Compute and Object Storage
*
* @copyright 2012-2013 Rackspace Hosting, Inc.
* See COPYING for licensing information
*
* @package phpOpenCloud
* @version 1.0
* @author Glen Campbell <glen.campbell@rackspace.com>
*/
namespace OpenCloud\Common;
/**
* The Metadata class represents either Server or Image metadata
*
* @api
* @author Glen Campbell <glen.campbell@rackspace.com>
*/
class Metadata extends Base
{
// array holding the names of keys that were set
private $_keylist = array();
/**
* This setter overrides the base one, since the metadata key can be
* anything
*
* @param string $key
* @param string $value
* @return void
*/
public function __set($key, $value)
{
// set the value and track the keys
if (!in_array($key, $this->_keylist)) {
$this->_keylist[] = $key;
}
$this->$key = $value;
}
/**
* Returns the list of keys defined
*
* @return array
*/
public function Keylist()
{
return $this->_keylist;
}
/**
* Sets metadata values from an array, with optional prefix
*
* If $prefix is provided, then only array keys that match the prefix
* are set as metadata values, and $prefix is stripped from the key name.
*
* @param array $values an array of key/value pairs to set
* @param string $prefix if provided, a prefix that is used to identify
* metadata values. For example, you can set values from headers
* for a Container by using $prefix='X-Container-Meta-'.
* @return void
*/
public function setArray($values, $prefix = null)
{
if (empty($values)) {
return false;
}
foreach ($values as $key => $value) {
if ($prefix) {
if (strpos($key, $prefix) === 0) {
$name = substr($key, strlen($prefix));
$this->getLogger()->info(
Lang::translate('Setting [{name}] to [{value}]'),
array(
'name' => $name,
'value' => $value
)
);
$this->$name = $value;
}
} else {
$this->$key = $value;
}
}
}
}
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