/**
* Start a multipart upload of an object
*
* @param Input $input Input data
* @param string $bucket Bucket name
* @param string $uri Object URI
* @param string $acl ACL constant
* @param array $requestHeaders Array of request headers
*
* @return string The upload session ID (UploadId)
*/
public function startMultipart(Input $input, $bucket, $uri, $acl = Acl::ACL_PRIVATE, $requestHeaders = array())
{
$request = new Request('POST', $bucket, $uri, $this->configuration);
$request->setParameter('uploads', '');
// Custom request headers (Content-Type, Content-Disposition, Content-Encoding)
if (is_array($requestHeaders)) {
foreach ($requestHeaders as $h => $v) {
if (strtolower(substr($h, 0, 6)) == 'x-amz-') {
$request->setAmzHeader(strtolower($h), $v);
} else {
$request->setHeader($h, $v);
}
}
}
$request->setAmzHeader('x-amz-acl', $acl);
if (isset($requestHeaders['Content-Type'])) {
$input->setType($requestHeaders['Content-Type']);
}
$request->setHeader('Content-Type', $input->getType());
$response = $request->getResponse();
if (!$response->error->isError() && $response->code !== 200) {
$response->error = new Error($response->code, "Unexpected HTTP status {$response->code}");
}
if ($response->error->isError()) {
throw new CannotPutFile(sprintf(__METHOD__ . "(): [%s] %s\n\nDebug info:\n%s", $response->error->getCode(), $response->error->getMessage(), print_r($response->body, true)));
}
return (string) $response->body->UploadId;
}