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<?php
namespace Aws\S3\Crypto;
use \Aws\Crypto\MetadataStrategyInterface;
use \Aws\Crypto\MetadataEnvelope;
class HeadersMetadataStrategy implements MetadataStrategyInterface
{
/**
* Places the information in the MetadataEnvelope in to the metadata for
* the PutObject request of the encrypted object.
*
* @param MetadataEnvelope $envelope Encryption data to save according to
* the strategy.
* @param array $args Arguments for PutObject that can be manipulated to
* store strategy related information.
*
* @return array Updated arguments for PutObject.
*/
public function save(MetadataEnvelope $envelope, array $args)
{
foreach ($envelope as $header=>$value) {
$args['Metadata'][$header] = $value;
}
return $args;
}
/**
* Generates a MetadataEnvelope according to the metadata headers from the
* GetObject result.
*
* @param array $args Arguments from Command and Result that contains
* S3 Object information, relevant headers, and command
* configuration.
*
* @return MetadataEnvelope
*/
public function load(array $args)
{
$envelope = new MetadataEnvelope();
$constantValues = MetadataEnvelope::getConstantValues();
foreach ($constantValues as $constant) {
if (!empty($args['Metadata'][$constant])) {
$envelope[$constant] = $args['Metadata'][$constant];
}
}
return $envelope;
}
}