Java

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.

Chilkat2 Java

import com.chilkatsoft.chilkat2.ChilkatException;
import com.chilkatsoft.chilkat2.Http;
import com.chilkatsoft.chilkat2.HttpResponse;
import com.chilkatsoft.chilkat2.JsonObject;
import com.chilkatsoft.chilkat2.StringBuilder;

public class ChilkatExample {

    public static void main(String[] args) {
        // 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..
        StringBuilder sbToken = new StringBuilder();
        sbToken.loadFile("qa_data/tokens/googleCloudStorageAccessToken.txt", "utf-8");

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

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

        JsonObject json = new JsonObject();
        // Be careful if using the "regional" storage class.  See the note below about the 400 error response.
        json.updateString("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"

        Http http = new Http();
        http.setAuthToken(sbToken.getAsString());

        http.setUrlVar("bucket_name", "chilkat-ocean");
        String url = "https://www.googleapis.com/storage/v1/b/{$bucket_name}?fields=storageClass";
        HttpResponse resp = new HttpResponse();
        try {
            http.httpJson("PUT", url, json, "application/json", resp);
        } catch (ChilkatException e) {
            System.out.println(e.getLastErrorText());
            return;
        }

        int responseCode = resp.getStatusCode();
        if (responseCode == 401) {
            System.out.println(resp.getBodyStr());
            System.out.println("If invalid credentials, then it is likely the access token expired.");
            System.out.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.

        System.out.println("Response code: " + responseCode);
        System.out.println("Response body");
        System.out.println(resp.getBodyStr());

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