Examples with SwiftThrottledRequestException org.apache.hadoop.fs.swift.exceptions.SwiftThrottledRequestException used on opensource projects

Example 1 with SwiftThrottledRequestException

use of org.apache.hadoop.fs.swift.exceptions.SwiftThrottledRequestException in project hadoop by apache.

the class SwiftRestClient method buildException.

/**
   * Build an exception from a failed operation. This can include generating
   * specific exceptions (e.g. FileNotFound), as well as the default
   * {@link SwiftInvalidResponseException}.
   *
   * @param uri URI for operation
   * @param method operation that failed
   * @param statusCode status code
   * @param <M> method type
   * @return an exception to throw
   */
private <M extends HttpMethod> IOException buildException(URI uri, M method, int statusCode) {
    IOException fault;
    //log the failure @debug level
    String errorMessage = String.format("Method %s on %s failed, status code: %d," + " status line: %s", method.getName(), uri, statusCode, method.getStatusLine());
    if (LOG.isDebugEnabled()) {
        LOG.debug(errorMessage);
    }
    //send the command
    switch(statusCode) {
        case SC_NOT_FOUND:
            fault = new FileNotFoundException("Operation " + method.getName() + " on " + uri);
            break;
        case SC_BAD_REQUEST:
            //bad HTTP request
            fault = new SwiftBadRequestException("Bad request against " + uri, method.getName(), uri, method);
            break;
        case SC_REQUESTED_RANGE_NOT_SATISFIABLE:
            //out of range
            StringBuilder errorText = new StringBuilder(method.getStatusText());
            //get the requested length
            Header requestContentLen = method.getRequestHeader(HEADER_CONTENT_LENGTH);
            if (requestContentLen != null) {
                errorText.append(" requested ").append(requestContentLen.getValue());
            }
            //and the result
            Header availableContentRange = method.getResponseHeader(HEADER_CONTENT_RANGE);
            if (availableContentRange != null) {
                errorText.append(" available ").append(availableContentRange.getValue());
            }
            fault = new EOFException(errorText.toString());
            break;
        case SC_UNAUTHORIZED:
            //auth failure; should only happen on the second attempt
            fault = new SwiftAuthenticationFailedException("Operation not authorized- current access token =" + getToken(), method.getName(), uri, method);
            break;
        case SwiftProtocolConstants.SC_TOO_MANY_REQUESTS_429:
        case SwiftProtocolConstants.SC_THROTTLED_498:
            //response code that may mean the client is being throttled
            fault = new SwiftThrottledRequestException("Client is being throttled: too many requests", method.getName(), uri, method);
            break;
        default:
            //return a generic invalid HTTP response
            fault = new SwiftInvalidResponseException(errorMessage, method.getName(), uri, method);
    }
    return fault;
}