Example usage for org.springframework.messaging.support MessageBuilder createMessage

Introduction

In this page you can find the example usage for org.springframework.messaging.support MessageBuilder createMessage.

Prototype

@SuppressWarnings("unchecked")
public static <T> Message<T> createMessage(@Nullable T payload, MessageHeaders messageHeaders) 

Source Link

Document

A shortcut factory method for creating a message with the given payload and MessageHeaders .

Usage

From source file:org.springframework.messaging.simp.stomp.DefaultStompSession.java

@SuppressWarnings("unchecked")
private Message<byte[]> createMessage(StompHeaderAccessor accessor, @Nullable Object payload) {
    accessor.updateSimpMessageHeadersFromStompHeaders();
    Message<byte[]> message;
    if (payload == null) {
        message = MessageBuilder.createMessage(EMPTY_PAYLOAD, accessor.getMessageHeaders());
    } else if (payload instanceof byte[]) {
        message = MessageBuilder.createMessage((byte[]) payload, accessor.getMessageHeaders());
    } else {/*from  w w w .j  a  va 2s .co m*/
        message = (Message<byte[]>) getMessageConverter().toMessage(payload, accessor.getMessageHeaders());
        accessor.updateStompHeadersFromSimpMessageHeaders();
        if (message == null) {
            throw new MessageConversionException(
                    "Unable to convert payload with type='" + payload.getClass().getName() + "', contentType='"
                            + accessor.getContentType() + "', converter=[" + getMessageConverter() + "]");
        }
    }
    return message;
}

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From source file:org.springframework.messaging.simp.stomp.StompBrokerRelayMessageHandlerIntegrationTests.java

@Test(expected = MessageDeliveryException.class)
public void messageDeliveryExceptionIfSystemSessionForwardFails() throws Exception {

    logger.debug("Starting test messageDeliveryExceptionIfSystemSessionForwardFails()");

    stopActiveMqBrokerAndAwait();/*from  w w  w  . j ava 2  s . com*/
    this.eventPublisher.expectBrokerAvailabilityEvent(false);

    StompHeaderAccessor headers = StompHeaderAccessor.create(StompCommand.SEND);
    this.relay.handleMessage(MessageBuilder.createMessage("test".getBytes(), headers.getMessageHeaders()));
}

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From source file:org.springframework.messaging.simp.stomp.StompDecoder.java

/**
 * Decode a single STOMP frame from the given {@code buffer} into a {@link Message}.
 *//*w ww  .j  av  a  2  s .  c  o m*/
@Nullable
private Message<byte[]> decodeMessage(ByteBuffer byteBuffer, @Nullable MultiValueMap<String, String> headers) {
    Message<byte[]> decodedMessage = null;
    skipLeadingEol(byteBuffer);

    // Explicit mark/reset access via Buffer base type for compatibility
    // with covariant return type on JDK 9's ByteBuffer...
    Buffer buffer = byteBuffer;
    buffer.mark();

    String command = readCommand(byteBuffer);
    if (command.length() > 0) {
        StompHeaderAccessor headerAccessor = null;
        byte[] payload = null;
        if (byteBuffer.remaining() > 0) {
            StompCommand stompCommand = StompCommand.valueOf(command);
            headerAccessor = StompHeaderAccessor.create(stompCommand);
            initHeaders(headerAccessor);
            readHeaders(byteBuffer, headerAccessor);
            payload = readPayload(byteBuffer, headerAccessor);
        }
        if (payload != null) {
            if (payload.length > 0) {
                StompCommand stompCommand = headerAccessor.getCommand();
                if (stompCommand != null && !stompCommand.isBodyAllowed()) {
                    throw new StompConversionException(stompCommand + " shouldn't have a payload: length="
                            + payload.length + ", headers=" + headers);
                }
            }
            headerAccessor.updateSimpMessageHeadersFromStompHeaders();
            headerAccessor.setLeaveMutable(true);
            decodedMessage = MessageBuilder.createMessage(payload, headerAccessor.getMessageHeaders());
            if (logger.isTraceEnabled()) {
                logger.trace("Decoded " + headerAccessor.getDetailedLogMessage(payload));
            }
        } else {
            logger.trace("Incomplete frame, resetting input buffer...");
            if (headers != null && headerAccessor != null) {
                String name = NativeMessageHeaderAccessor.NATIVE_HEADERS;
                @SuppressWarnings("unchecked")
                MultiValueMap<String, String> map = (MultiValueMap<String, String>) headerAccessor
                        .getHeader(name);
                if (map != null) {
                    headers.putAll(map);
                }
            }
            buffer.reset();
        }
    } else {
        StompHeaderAccessor headerAccessor = StompHeaderAccessor.createForHeartbeat();
        initHeaders(headerAccessor);
        headerAccessor.setLeaveMutable(true);
        decodedMessage = MessageBuilder.createMessage(HEARTBEAT_PAYLOAD, headerAccessor.getMessageHeaders());
        if (logger.isTraceEnabled()) {
            logger.trace("Decoded " + headerAccessor.getDetailedLogMessage(null));
        }
    }

    return decodedMessage;
}

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From source file:org.springframework.messaging.simp.user.UserDestinationMessageHandler.java

@Override
public void handleMessage(Message<?> message) throws MessagingException {
    Message<?> messageToUse = message;
    if (this.broadcastHandler != null) {
        messageToUse = this.broadcastHandler.preHandle(message);
        if (messageToUse == null) {
            return;
        }/*from w w  w .  ja  v a2 s. c o m*/
    }

    UserDestinationResult result = this.destinationResolver.resolveDestination(messageToUse);
    if (result == null) {
        return;
    }

    if (result.getTargetDestinations().isEmpty()) {
        if (logger.isTraceEnabled()) {
            logger.trace("No active sessions for user destination: " + result.getSourceDestination());
        }
        if (this.broadcastHandler != null) {
            this.broadcastHandler.handleUnresolved(messageToUse);
        }
        return;
    }

    SimpMessageHeaderAccessor accessor = SimpMessageHeaderAccessor.wrap(messageToUse);
    initHeaders(accessor);
    accessor.setNativeHeader(SimpMessageHeaderAccessor.ORIGINAL_DESTINATION, result.getSubscribeDestination());
    accessor.setLeaveMutable(true);

    messageToUse = MessageBuilder.createMessage(messageToUse.getPayload(), accessor.getMessageHeaders());
    if (logger.isTraceEnabled()) {
        logger.trace("Translated " + result.getSourceDestination() + " -> " + result.getTargetDestinations());
    }
    for (String target : result.getTargetDestinations()) {
        this.messagingTemplate.send(target, messageToUse);
    }
}

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From source file:org.springframework.web.socket.messaging.StompSubProtocolHandler.java

private Message<byte[]> createDisconnectMessage(WebSocketSession session) {
    StompHeaderAccessor headerAccessor = StompHeaderAccessor.create(StompCommand.DISCONNECT);
    if (getHeaderInitializer() != null) {
        getHeaderInitializer().initHeaders(headerAccessor);
    }//w ww. j  a  va2 s  . co  m

    headerAccessor.setSessionId(session.getId());
    headerAccessor.setSessionAttributes(session.getAttributes());

    Principal user = getUser(session);
    if (user != null) {
        headerAccessor.setUser(user);
    }

    return MessageBuilder.createMessage(EMPTY_PAYLOAD, headerAccessor.getMessageHeaders());
}

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