How to use

buildSigV4Signer

method

in

com.amazonaws.services.s3.internal.S3V4AuthErrorRetryStrategy

/**
 * If the response doesn't have the x-amz-region header we have to resort to sending a request
 * to s3-external-1
 *
 * @return
 */
private AuthRetryParameters redirectToS3External() {
  AWSS3V4Signer v4Signer = buildSigV4Signer(Regions.US_EAST_1.getName());
  try {
    URI bucketEndpoint = new URI(
        String.format("https://%s.s3-external-1.amazonaws.com", endpointResolver.getBucketName()));
    return buildRetryParams(v4Signer, bucketEndpoint);
  } catch (URISyntaxException e) {
    throw new SdkClientException(
        "Failed to re-send the request to \"s3-external-1.amazonaws.com\". " + V4_REGION_WARNING, e);
  }
}

private AuthRetryParameters redirectToRegionInHeader(Request<?> request, HttpResponse response) {
  final String region = getServingRegionHeader(response);
  AWSS3V4Signer v4Signer = buildSigV4Signer(region);
  endpointResolver.resolveRequestEndpoint(request, region);
  return buildRetryParams(v4Signer, request.getEndpoint());
}

/**
 * If the response doesn't have the x-amz-region header we have to resort to sending a request
 * to s3-external-1
 *
 * @return
 */
private AuthRetryParameters redirectToS3External() {
  AWSS3V4Signer v4Signer = buildSigV4Signer(Regions.US_EAST_1.getName());
  try {
    URI bucketEndpoint = new URI(
        String.format("https://%s.s3-external-1.amazonaws.com", endpointResolver.getBucketName()));
    return buildRetryParams(v4Signer, bucketEndpoint);
  } catch (URISyntaxException e) {
    throw new SdkClientException(
        "Failed to re-send the request to \"s3-external-1.amazonaws.com\". " + V4_REGION_WARNING, e);
  }
}

private AuthRetryParameters redirectToRegionInHeader(Request<?> request, HttpResponse response) {
  final String region = getServingRegionHeader(response);
  AWSS3V4Signer v4Signer = buildSigV4Signer(region);
  endpointResolver.resolveRequestEndpoint(request, region);
  return buildRetryParams(v4Signer, request.getEndpoint());
}