Rust

Manage Bucket Storage Class

See more Google Cloud Storage Examples

Demonstrates how to manage a bucket's default storage class.

See Cloud Storage Classes for information about storage classes.

Rust

// This example requires the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.

// This example uses a previously obtained access token having permission for the 
// scope "https://www.googleapis.com/auth/cloud-platform"

// In this example, Get Google Cloud Storage OAuth2 Access Token, 
// the service account access token was saved to a text file.  This example fetches the access token from the file..
let sb_token = chilkat::StringBuilder::new();
let _ = sb_token.load_file("qa_data/tokens/googleCloudStorageAccessToken.txt", "utf-8");

// ---- Step 1
// Create the JSON body of the PUT request that will be sent.

// {
//   "storageClass": "[STORAGE_CLASS]"
// }
// 

let json = chilkat::JsonObject::new();
// Be careful if using the "regional" storage class.  See the note below about the 400 error response.
let _ = json.update_string("storageClass", "nearline");

// ---- Step 2
// Send a PUT equivalent to this curl command

// curl -X PUT --data-binary @[JSON_FILE_NAME].json \
//     -H "Authorization: Bearer [OAUTH2_TOKEN]" \
//     -H "Content-Type: application/json" \
//     "https://www.googleapis.com/storage/v1/b/[BUCKET_NAME]?fields=storageClass"

let http = chilkat::Http::new();
http.set_auth_token(&sb_token.get_as_string().unwrap_or_default());

let _ = http.set_url_var("bucket_name", "chilkat-ocean");
let url = "https://www.googleapis.com/storage/v1/b/{$bucket_name}?fields=storageClass".to_string();
let resp = chilkat::HttpResponse::new();
if http.http_json("PUT", &url, &json, "application/json", &resp).is_err() {
    println!("{}", http.last_error_text());
    return;
}

let response_code = resp.status_code();
if response_code == 401 {
    println!("{}", resp.body_str());
    println!("If invalid credentials, then it is likely the access token expired.");
    println!("Your app should automatically fetch a new access token and re-try.");
    return;
}

// On my first try at running this code, I received the following error response:
// Response code: 400
// Response body
// {
//  "error": {
//   "errors": [
//    {
//     "domain": "global",
//     "reason": "invalid",
//     "message": "The combination of locationConstraint and storageClass you provided is not supported for your project"
//    }
//   ],
//   "code": 400,
//   "message": "The combination of locationConstraint and storageClass you provided is not supported for your project"
//  }
// }
// 

// This was because my storage location was a Multi-regional location, and I tried to assign the "regional" storage class,
// which is not allowed. 

println!("Response code: {}", response_code);
println!("Response body");
println!("{}", resp.body_str());

// A response code = 200 indicates success, and the response body contains the JSON
// 
// Response code: 200
// Response body
// {
//  "storageClass": "NEARLINE"
// }
//