Examples with AmqpErrorException org.eclipse.hono.util.AmqpErrorException used on opensource projects

Example 1 with AmqpErrorException

use of org.eclipse.hono.util.AmqpErrorException in project hono by eclipse.

the class RequestResponseEndpoint method handleMessage.

/**
 * Handles a request message received from a client.
 * <p>
 * The message gets rejected if
 * <ul>
 * <li>the message does not pass {@linkplain #passesFormalVerification(ResourceIdentifier, Message) formal verification}
 * or</li>
 * <li>the client is not {@linkplain #isAuthorized(HonoUser, ResourceIdentifier, Message) authorized to execute the operation}
 * indicated by the message's <em>subject</em> or</li>
 * <li>its payload cannot be parsed</li>
 * </ul>
 *
 * @param con The connection with the client.
 * @param receiver The link over which the message has been received.
 * @param targetAddress The address the message is sent to.
 * @param delivery The message's delivery status.
 * @param message The message.
 */
protected final void handleMessage(final ProtonConnection con, final ProtonReceiver receiver, final ResourceIdentifier targetAddress, ProtonDelivery delivery, Message message) {
    final Future<Void> formalCheck = Future.future();
    if (passesFormalVerification(targetAddress, message)) {
        formalCheck.complete();
    } else {
        formalCheck.fail(new AmqpErrorException(AmqpError.DECODE_ERROR, "malformed payload"));
    }
    final HonoUser clientPrincipal = Constants.getClientPrincipal(con);
    formalCheck.compose(ok -> isAuthorized(clientPrincipal, targetAddress, message)).compose(authorized -> {
        logger.debug("client [{}] is {}authorized to {}:{}", clientPrincipal.getName(), authorized ? "" : "not ", targetAddress, message.getSubject());
        if (authorized) {
            try {
                processRequest(message, targetAddress, clientPrincipal);
                ProtonHelper.accepted(delivery, true);
                return Future.succeededFuture();
            } catch (DecodeException e) {
                return Future.failedFuture(new AmqpErrorException(AmqpError.DECODE_ERROR, "malformed payload"));
            }
        } else {
            return Future.failedFuture(new AmqpErrorException(AmqpError.UNAUTHORIZED_ACCESS, "unauthorized"));
        }
    }).otherwise(t -> {
        if (t instanceof AmqpErrorException) {
            AmqpErrorException cause = (AmqpErrorException) t;
            MessageHelper.rejected(delivery, cause.asErrorCondition());
        } else {
            logger.debug("error processing request [resource: {}, op: {}]: {}", targetAddress, message.getSubject(), t.getMessage());
            MessageHelper.rejected(delivery, ProtonHelper.condition(AmqpError.INTERNAL_ERROR, "internal error"));
        }
        return null;
    });
}