auth.Auth.java Source code

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Here is the source code for auth.Auth.java

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package auth;

import com.google.api.client.auth.oauth2.Credential;
import com.google.api.client.extensions.java6.auth.oauth2.AuthorizationCodeInstalledApp;
import com.google.api.client.extensions.jetty.auth.oauth2.LocalServerReceiver;
import com.google.api.client.googleapis.auth.oauth2.GoogleAuthorizationCodeFlow;
import com.google.api.client.googleapis.auth.oauth2.GoogleClientSecrets;
import com.google.api.client.googleapis.javanet.GoogleNetHttpTransport;
import com.google.api.client.http.HttpTransport;
import com.google.api.client.json.JsonFactory;
import com.google.api.client.json.jackson2.JacksonFactory;
import com.google.api.client.util.store.FileDataStoreFactory;
import com.google.api.services.drive.Drive;
import com.google.api.services.drive.DriveScopes;
import com.mycompany.googleapi.DriveQuickstart;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.Arrays;
import java.util.List;

/**
 *
 * @author konst
 */
public class Auth {

    /**
     * Application name.
     */
    private static final String APPLICATION_NAME = "Report";

    /**
     * Directory to store user credentials.
     */
    private static final java.io.File DATA_STORE_DIR = new java.io.File(System.getProperty("user.home"),
            ".credentials/drive-api-quickstart");

    /**
     * Global instance of the {@link FileDataStoreFactory}.
     */
    private static FileDataStoreFactory DATA_STORE_FACTORY;

    /**
     * Global instance of the JSON factory.
     */
    private static final JsonFactory JSON_FACTORY = JacksonFactory.getDefaultInstance();

    /**
     * Global instance of the HTTP transport.
     */
    private static HttpTransport HTTP_TRANSPORT;

    /**
     * Global instance of the scopes required by this quickstart.
     */
    private static final List<String> SCOPES = Arrays.asList(DriveScopes.DRIVE,
            "https://www.googleapis.com/auth/drive", "https://www.googleapis.com/auth/drive.appdata",
            "https://www.googleapis.com/auth/drive.file", "https://spreadsheets.google.com/feeds",
            "https://docs.google.com/feeds");

    static {
        try {
            HTTP_TRANSPORT = GoogleNetHttpTransport.newTrustedTransport();
            DATA_STORE_FACTORY = new FileDataStoreFactory(DATA_STORE_DIR);
        } catch (Throwable t) {
            t.printStackTrace();
            System.exit(1);
        }
    }

    /**
     * Creates an authorized Credential object.
     *
     * @return an authorized Credential object.
     * @throws IOException
     */
    public static Credential authorize() throws IOException, Exception {
        // Load client secrets.
        InputStream in = DriveQuickstart.class.getResourceAsStream("/client_secret.json");
        GoogleClientSecrets clientSecrets = GoogleClientSecrets.load(JSON_FACTORY, new InputStreamReader(in));

        // Build flow and trigger user authorization request.
        GoogleAuthorizationCodeFlow flow = new GoogleAuthorizationCodeFlow.Builder(HTTP_TRANSPORT, JSON_FACTORY,
                clientSecrets, SCOPES).setDataStoreFactory(DATA_STORE_FACTORY).setAccessType("offline").build();

        Credential credential = new AuthorizationCodeInstalledApp(flow, new LocalServerReceiver())
                .authorize("user");

        System.out.println("Credentials saved to " + DATA_STORE_DIR.getAbsolutePath());
        return credential;
    }

    /**
     * Build and return an authorized Drive client service.
     *
     * @return an authorized Drive client service
     * @throws IOException
     */
    public static Drive getDriveService() throws IOException, Exception {
        Credential credential = authorize();
        return new Drive.Builder(HTTP_TRANSPORT, JSON_FACTORY, credential).setApplicationName(APPLICATION_NAME)
                .build();
    }
}