For whatever reason you can’t use gsutil, gcloud, or a client library, you could request an access token directly. This example uses PHP 5.2 (the PHP client library only works with PHP 5.3+). Please make sure your instance has access to the correct scopes and that a service account is enabled.
public function setGoogleStorage()
{
// Get access code
$access_token_request_url = "http://metadata/computeMetadata/v1/instance/service-accounts/default/token";
$google_ch = curl_init();
curl_setopt($google_ch, CURLOPT_URL, $access_token_request_url);
curl_setopt($google_ch, CURLOPT_HTTPHEADER, array('Metadata-Flavor: Google'));
curl_setopt($google_ch, CURLOPT_RETURNTRANSFER, true);
$c_result = curl_exec($google_ch);
list($at, $exp, $toktype) = explode(",", $c_result);
list($a, $access_token) = explode(":", $at);
curl_close($google_ch);
$google_header = array("Authorization: Bearer $access_token");
$this->setRequestHeader($google_header);
}
// READ
$storage_url = "https://storage.googleapis.com/my-test-bucket/my-test-file.txt";
$read_request = new RestRequest($storage_url, "GET", "");
$read_request->setGoogleStorage();
$read_request->execute();
$resp_str = $read_request->getResponseBody();
// CREATE
$storage_path = "https://storage.googleapis.com/my-test-bucket/my-test-upload-file.txt";
$file_contents = file_get_contents("/tmp/my-test-upload-file.txt");
$write_request = new RestRequest($storage_path, "PUT", $file_contents);
$write_request->setGoogleStorage();
$write_request->execute();
$write_response = $write_request->getResponseInfo();
Related Resources:
- https://cloud.google.com/compute/docs/metadata?hl=en
- https://cloud.google.com/compute/docs/authentication
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