Java

Google Drive Insert Permission

See more Google Drive Examples

This example demonstrates how to insert a permission for a file (see https://developers.google.com/drive/v2/reference/permissions/insert)

The impetus for creating this example was a need to be able to view files uploaded using a service account key in the Google Drive web interface. When using a service account access token, the files your application will see are those for the service account, and not the files for your main account. For example, the Google Account I use for testing has a username of "support@chilkatcloud.com". (Don't send email to support@chilkatcloud.com, it's just use for testing and not interactively read.) I use "support@chilkatcloud.com" when I log into Google interactively to view files in Google Drive at https://drive.google.com/drive/my-drive.

The files I upload to Google Drive using a service account key won't be visible in the browser UI. To make them visible, you need to insert a permission for the file so that the main user account, which in this case is "support@chilkatcloud.com", is a reader. After the permission is inserted, the file will be visible under "Shared with me" -- as if another Google Drive account shared the file with you.

Chilkat2 Java

import com.chilkatsoft.chilkat2.AuthGoogle;
import com.chilkatsoft.chilkat2.ChilkatException;
import com.chilkatsoft.chilkat2.JsonObject;
import com.chilkatsoft.chilkat2.Rest;

public class ChilkatExample {

    public static void main(String[] args) {
        boolean success = false;

        success = true;

        // It 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
        // Google Drive scope.

        AuthGoogle gAuth = new AuthGoogle();
        gAuth.setAccessToken("GOOGLE-DRIVE-ACCESS-TOKEN");

        Rest rest = new Rest();

        // Connect using TLS.
        boolean bAutoReconnect = true;
        rest.connect("www.googleapis.com", 443, true, bAutoReconnect);

        // Provide the authentication credentials (i.e. the access token)
        rest.setAuthGoogle(gAuth);

        rest.addHeader("Content-Type", "application/json; charset=UTF-8");

        JsonObject json = new JsonObject();
        json.appendString("role", "reader");
        json.appendString("type", "user");
        json.appendString("value", "support@chilkatcloud.com");

        // A note from a Chilkat customer:
        //
        //   My coding attempt was frustrated because I tried a role of "owner".
        //   Even when providing the extra parameter of ...?transferOwnership=true
        //   that approach fails (400, Bad Request).
        //

        // This example is inserting a permission for the file whose fileId is "0By-hrxCCDzSQUGxJY0hzNUFpNmc".
        String jsonResponse;
        try {
            jsonResponse = rest.fullRequestString("POST", "/drive/v2/files/0By-hrxCCDzSQUGxJY0hzNUFpNmc/permissions", json.emit());
        } catch (ChilkatException e) {
            System.out.println(e.getLastErrorText());
            return;
        }

        // A successful response will have a status code equal to 200.
        if (rest.getResponseStatusCode() != 200) {
            System.out.println("response status code = " + rest.getResponseStatusCode());
            System.out.println("response status text = " + rest.getResponseStatusText());
            System.out.println("response header: " + rest.getResponseHeader());
            System.out.println("response JSON: " + jsonResponse);
            return;
        }

        // Show the JSON response.
        json.load(jsonResponse);

        // Show the full JSON response.
        json.setEmitCompact(false);
        System.out.println(json.emit());

        System.out.println("Success.");
    }
}