Examples with ResponseBuilder won.protocol.message.builder.ResponseBuilder used on opensource projects

Example 1 with ResponseBuilder

use of won.protocol.message.builder.ResponseBuilder in project webofneeds by researchstudio-sat.

the class SuccessResponder method process.

@Override
public void process(final Exchange exchange) throws Exception {
    WonMessage originalMessage = WonCamelHelper.getMessageRequired(exchange);
    if (originalMessage.getMessageTypeRequired().isResponseMessage()) {
        // we don't respond to responses
        return;
    }
    ResponseBuilder responseBuilder = WonMessageBuilder.response();
    // about them by using them as the senderURI property in the response.
    if (originalMessage.getMessageTypeRequired().isConnectionSpecificMessage()) {
        Optional<Connection> con = connectionService.getConnectionForMessage(originalMessage, getDirectionRequired(exchange));
        if (con.isPresent()) {
            responseBuilder.fromConnection(con.get().getConnectionURI());
        }
    } else if (originalMessage.getMessageTypeRequired().isAtomSpecificMessage()) {
        responseBuilder.fromAtom(originalMessage.getAtomURIRequired());
    }
    WonMessage responseMessage = responseBuilder.respondingToMessage(originalMessage, getDirectionRequired(exchange)).success().build();
    messageReferencer.addMessageReferences(responseMessage, getParentURIRequired(exchange));
    responseMessage = signatureAddingWonMessageProcessor.signWithDefaultKey(responseMessage);
    exchange.getIn().setHeader(WonCamelConstants.RESPONSE_HEADER, responseMessage);
}

Example 2 with ResponseBuilder

use of won.protocol.message.builder.ResponseBuilder in project webofneeds by researchstudio-sat.

the class FailResponder method process.

@Override
public void process(final Exchange exchange) throws Exception {
    Exception exception = null;
    WonMessage originalMessage = null;
    try {
        originalMessage = (WonMessage) exchange.getIn().getHeader(WonCamelConstants.MESSAGE_HEADER);
        if (originalMessage == null) {
            // we didn't find the original message, so we can't send a response.
            // Log all we can so that we can start debugging the problem
            logger.warn("Could not obtain original message from camel header {} for error {}", new Object[] { WonCamelConstants.MESSAGE_HEADER, exchange.getProperty(Exchange.EXCEPTION_CAUGHT) });
            logger.warn("original exception:", exchange.getProperty(Exchange.EXCEPTION_CAUGHT));
            return;
        }
        exception = (Exception) exchange.getProperty(Exchange.EXCEPTION_CAUGHT);
        String errormessage = null;
        if (exception != null) {
            errormessage = exception.getClass().getSimpleName() + ": " + exception.getMessage();
        }
        if (errormessage != null) {
            errormessage = String.format("An error occurred while processing message %s (type: %s): %s", originalMessage.getMessageURI(), originalMessage.getMessageType(), errormessage);
        }
        if (exception instanceof WonProtocolException) {
            if (logger.isDebugEnabled()) {
                if (exception != null) {
                    logger.debug("Caught protocol exception. Sending FailureResponse ", exception);
                }
            }
        } else {
            logger.warn("Caught unexpected exception while processing WON message {} (type:{}) : {} - sending FailureResponse", new Object[] { originalMessage.getMessageURI(), originalMessage.getMessageType(), errormessage });
            logger.warn("Full stacktrace: ", exception);
        }
        if (logger.isDebugEnabled()) {
            logger.debug("original message: {}", RdfUtils.toString(Prefixer.setPrefixes(originalMessage.getCompleteDataset())));
        }
        if (WonMessageType.FAILURE_RESPONSE == originalMessage.getMessageType()) {
            // do not throw failures back and forth. If the original message is already a
            // failure message
            // that indicates a problem processing a failure message, log this and stop.
            logger.info("Encountered an error processing a FailureResponse. The FailureResponse is " + "logged at log level DEBUG. Its message URI is {}", originalMessage.getMessageURI(), exception);
            StringWriter sw = new StringWriter();
            RDFDataMgr.write(sw, Prefixer.setPrefixes(originalMessage.getCompleteDataset()), Lang.TRIG);
            logger.warn("FailureResponse to FailureResponse that raised the error:\n{}", sw.toString());
            return;
        }
        if (originalMessage.getMessageTypeRequired().isResponseMessage()) {
            // not sending a failure response for a response
            return;
        }
        WonMessageDirection direction = getDirectionRequired(exchange);
        ResponseBuilder responseBuilder = WonMessageBuilder.response();
        // about them by using them as the senderURI property in the response.
        if (originalMessage.getMessageTypeRequired().isConnectionSpecificMessage()) {
            Optional<Connection> con = connectionService.getConnectionForMessage(originalMessage, getDirectionRequired(exchange));
            if (con.isPresent()) {
                responseBuilder.fromConnection(con.get().getConnectionURI());
            }
        } else if (originalMessage.getMessageTypeRequired().isAtomSpecificMessage()) {
            responseBuilder.fromAtom(originalMessage.getAtomURIRequired());
        }
        WonMessage responseMessage = responseBuilder.respondingToMessage(originalMessage, getDirectionRequired(exchange)).failure().content().text(errormessage).build();
        responseMessage = signatureAddingWonMessageProcessor.signWithDefaultKey(responseMessage);
        putResponse(exchange, responseMessage);
        putMessageToSend(exchange, responseMessage);
        // extract the routing information
        URI atom = messageRoutingInfoService.recipientAtom(responseMessage).orElseThrow(() -> new IllegalArgumentException("Cannot dertermine recipient atom for response"));
        // the sender node is not there in the case of hint messages.
        Optional<URI> senderNode = messageRoutingInfoService.senderNode(responseMessage);
        URI recipientNode = messageRoutingInfoService.recipientNode(responseMessage).orElseThrow(() -> new IllegalArgumentException("Cannot dertermine node for response"));
        if (senderNode.isPresent()) {
            putSenderNodeURI(exchange, senderNode.get());
        }
        putRecipientNodeURI(exchange, recipientNode);
        putRecipientAtomURI(exchange, atom);
        // send the message
        if (direction.isFromExternal()) {
            messagingService.send(exchange, "direct:sendToNode");
        } else if (direction.isFromOwner()) {
            messagingService.send(exchange, "direct:sendToOwner");
        }
    } catch (Throwable t) {
        // something went wrong - we can't inform the sender of the message.
        // now:
        // 1. log the error we had here
        // 2. log the original error, otherwise it is swallowed completely
        logger.warn("Error in failure response handling!");
        URI originalMessageURI = null;
        try {
            originalMessageURI = originalMessage == null ? null : originalMessage.getMessageURI();
        } catch (Exception e) {
            logger.error("Error getting message URI from WonMessage");
        }
        if (exception != null && exception.getClass() != null) {
            logger.warn(String.format("Could not send FailureResponse for original Exception %s (message: %s) that occurred while processing message %s.", exception.getClass().getSimpleName(), exception.getMessage(), originalMessageURI), t);
            logger.warn("original error: ", exception);
        } else {
            logger.warn(String.format("Could not send FailureResponse to original message %s.", originalMessageURI), t);
            logger.warn("original error: ", exception);
        }
    }
}