@Override
protected void doGet(final HttpServletRequest req, final HttpServletResponse resp)
    throws IOException {

  try {
    AppIdentityCredential credential = new AppIdentityCredential(Arrays.asList(STORAGE_SCOPE));

    // Set up and execute Google Cloud Storage request.
    String bucketName = req.getRequestURI();
    if (bucketName.equals("/")) {
      resp.sendError(
          HTTP_NOT_FOUND, "No bucket specified - append /bucket-name to the URL and retry.");
      return;
    }
    // Remove any trailing slashes, if found.
    // [START snippet]
    String cleanBucketName = bucketName.replaceAll("/$", "");
    String uri = GCS_URI + cleanBucketName;
    HttpRequestFactory requestFactory = HTTP_TRANSPORT.createRequestFactory(credential);
    GenericUrl url = new GenericUrl(uri);
    HttpRequest request = requestFactory.buildGetRequest(url);
    HttpResponse response = request.execute();
    String content = response.parseAsString();
    // [END snippet]

    // Display the output XML.
    resp.setContentType("text/xml");
    BufferedWriter writer = new BufferedWriter(new OutputStreamWriter(resp.getOutputStream()));
    String formattedContent = content.replaceAll("(<ListBucketResult)", XSL + "$1");
    writer.append(formattedContent);
    writer.flush();
    resp.setStatus(HTTP_OK);
  } catch (Throwable e) {
    resp.sendError(HTTP_NOT_FOUND, e.getMessage());
  }
}
 

@Override
protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws IOException {

  try {
    AppIdentityCredential credential = new AppIdentityCredential(Arrays.asList(STORAGE_SCOPE));

    // Set up and execute Google Cloud Storage request.
    String bucketName = req.getRequestURI();
    if (bucketName.equals("/")) {
      resp.sendError(404, "No bucket specified - append /bucket-name to the URL and retry.");
      return;
    }
    // Remove any trailing slashes, if found.
    //[START snippet]
    String cleanBucketName = bucketName.replaceAll("/$", "");
    String URI = GCS_URI + cleanBucketName;
    HttpRequestFactory requestFactory = HTTP_TRANSPORT.createRequestFactory(credential);
    GenericUrl url = new GenericUrl(URI);
    HttpRequest request = requestFactory.buildGetRequest(url);
    HttpResponse response = request.execute();
    String content = response.parseAsString();
    //[END snippet]

    // Display the output XML.
    resp.setContentType("text/xml");
    BufferedWriter writer = new BufferedWriter(new OutputStreamWriter(resp.getOutputStream()));
    String formattedContent = content.replaceAll("(<ListBucketResult)", XSL + "$1");
    writer.append(formattedContent);
    writer.flush();
    resp.setStatus(200);
  } catch (Throwable e) {
    resp.sendError(404, e.getMessage());
  }
}
 

OauthRawGcsService(OAuthURLFetchService urlfetch, ImmutableSet<HTTPHeader> headers) {
  this.urlfetch = checkNotNull(urlfetch, "Null urlfetch");
  this.headers = checkNotNull(headers, "Null headers");
  AppIdentityCredential cred = new AppIdentityCredential(OAUTH_SCOPES);
  storage = new Storage.Builder(new UrlFetchTransport(), new JacksonFactory(), cred)
      .setApplicationName(SystemProperty.applicationId.get()).build();
}