Examples of org.springframework.messaging.simp.SimpMessageHeaderAccessor

Package org.springframework.messaging.simp

Examples of org.springframework.messaging.simp.SimpMessageHeaderAccessor

org.springframework.messaging.simp.SimpMessageHeaderAccessor
A base class for working with message headers in simple messaging protocols that support basic messaging patterns. Provides uniform access to specific values common across protocols such as a destination, message type (e.g. publish, subscribe, etc), session id, and others.
Use one of the static factory method in this class, then call getters and setters, and at the end if necessary call {@link #toMap()} to obtain the updated headers. @author Rossen Stoyanchev @since 4.0

    StompHeaderAccessor connectHeaders = StompHeaderAccessor.create(StompCommand.CONNECT);
    connectHeaders.setHeartbeat(10000, 10000);
    connectHeaders.setAcceptVersion("1.0,1.1");
    Message<?> connectMessage = MessageBuilder.createMessage(EMPTY_PAYLOAD, connectHeaders.getMessageHeaders());


    SimpMessageHeaderAccessor connectAckHeaders = SimpMessageHeaderAccessor.create(SimpMessageType.CONNECT_ACK);
    connectAckHeaders.setHeader(SimpMessageHeaderAccessor.CONNECT_MESSAGE_HEADER, connectMessage);
    Message<byte[]> connectAckMessage = MessageBuilder.createMessage(EMPTY_PAYLOAD, connectAckHeaders.getMessageHeaders());


    this.protocolHandler.handleMessageToClient(this.session, connectAckMessage);


    verifyNoMoreInteractions(this.channel);

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    if (!checkDestinationPrefix(destination)) {
      return;
    }


    SimpMessageHeaderAccessor accessor = MessageHeaderAccessor.getAccessor(message, SimpMessageHeaderAccessor.class);
    if (accessor == null) {
      throw new IllegalStateException(
          "No header accessor (not using the SimpMessagingTemplate?): " + message);
    }


    if (SimpMessageType.MESSAGE.equals(messageType)) {
      if (logger.isDebugEnabled()) {
        logger.debug("Processing " + accessor.getShortLogMessage(message.getPayload()));
      }
      sendMessageToSubscribers(destination, message);
    }
    else if (SimpMessageType.CONNECT.equals(messageType)) {
      if (logger.isDebugEnabled()) {
        logger.debug("Processing " + accessor.getShortLogMessage(EMPTY_PAYLOAD));
      }
      SimpMessageHeaderAccessor connectAck = SimpMessageHeaderAccessor.create(SimpMessageType.CONNECT_ACK);
      initHeaders(connectAck);
      connectAck.setSessionId(sessionId);
      connectAck.setHeader(SimpMessageHeaderAccessor.CONNECT_MESSAGE_HEADER, message);
      Message<byte[]> messageOut = MessageBuilder.createMessage(EMPTY_PAYLOAD, connectAck.getMessageHeaders());
      getClientOutboundChannel().send(messageOut);
    }
    else if (SimpMessageType.DISCONNECT.equals(messageType)) {
      if (logger.isDebugEnabled()) {
        logger.debug("Processing " + accessor.getShortLogMessage(EMPTY_PAYLOAD));
      }
      this.subscriptionRegistry.unregisterAllSubscriptions(sessionId);
      SimpMessageHeaderAccessor disconnectAck = SimpMessageHeaderAccessor.create(SimpMessageType.DISCONNECT_ACK);
      initHeaders(disconnectAck);
      disconnectAck.setSessionId(sessionId);
      Message<byte[]> messageOut = MessageBuilder.createMessage(EMPTY_PAYLOAD, disconnectAck.getMessageHeaders());
      getClientOutboundChannel().send(messageOut);
    }
    else if (SimpMessageType.SUBSCRIBE.equals(messageType)) {
      if (logger.isDebugEnabled()) {
        logger.debug("Processing " + accessor.getShortLogMessage(EMPTY_PAYLOAD));

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    assertEquals("bar", message.getHeaders().get("foo"));
  }


  @Test
  public void toMessageWithMutableMessageHeaders() {
    SimpMessageHeaderAccessor accessor = SimpMessageHeaderAccessor.create(SimpMessageType.MESSAGE);
    accessor.setHeader("foo", "bar");
    accessor.setNativeHeader("fooNative", "barNative");
    accessor.setLeaveMutable(true);


    MessageHeaders headers = accessor.getMessageHeaders();
    Message<?> message = this.converter.toMessage("ABC", headers);


    assertSame(headers, message.getHeaders());
    assertNull(message.getHeaders().getId());
    assertNull(message.getHeaders().getTimestamp());

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      builder.expected.add(new StompReceiptFrameMessageMatcher(sessionId, receiptId));
      return builder;
    }


    public static MessageExchangeBuilder send(String destination, String payload) {
      SimpMessageHeaderAccessor headers = SimpMessageHeaderAccessor.create(SimpMessageType.MESSAGE);
      headers.setDestination(destination);
      Message<?> message = MessageBuilder.createMessage(payload.getBytes(UTF_8), headers.getMessageHeaders());
      return new MessageExchangeBuilder(message);
    }

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  }


  @Test
  public void toNativeHeadersContentType() {


    SimpMessageHeaderAccessor simpHeaderAccessor = SimpMessageHeaderAccessor.create();
    simpHeaderAccessor.setContentType(MimeTypeUtils.APPLICATION_ATOM_XML);
    Message<byte[]> message = MessageBuilder.createMessage(new byte[0], simpHeaderAccessor.getMessageHeaders());


    StompHeaderAccessor stompHeaderAccessor = StompHeaderAccessor.wrap(message);
    Map<String, List<String>> map = stompHeaderAccessor.toNativeHeaderMap();


    assertEquals("application/atom+xml", map.get(StompHeaderAccessor.STOMP_CONTENT_TYPE_HEADER).get(0));

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  @Test
  public void testDestinationExcluded() throws Exception {


    this.brokerRelay.start();


    SimpMessageHeaderAccessor headers = SimpMessageHeaderAccessor.create(SimpMessageType.MESSAGE);
    headers.setSessionId("sess1");
    headers.setDestination("/user/daisy/foo");
    this.brokerRelay.handleMessage(MessageBuilder.createMessage(new byte[0], headers.getMessageHeaders()));


    List<Message<byte[]>> sent = this.tcpClient.connection.messages;
    assertEquals(1, sent.size());
    assertEquals(StompCommand.CONNECT, StompHeaderAccessor.wrap(sent.get(0)).getCommand());
    assertNotNull("The prepared message does not have an accessor",

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    assertNull(actual);
  }




  private Message<?> createMessage(SimpMessageType messageType, TestPrincipal user, String sessionId, String destination) {
    SimpMessageHeaderAccessor headers = SimpMessageHeaderAccessor.create(messageType);
    if (destination != null) {
      headers.setDestination(destination);
    }
    if (user != null) {
      headers.setUser(user);
    }
    if (sessionId != null) {
      headers.setSessionId(sessionId);
    }
    return MessageBuilder.withPayload(new byte[0]).setHeaders(headers).build();
  }

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    assertEquals("Expected no elements " + actual, 0, actual.size());
  }




  private Message<?> subscribeMessage(String sessionId, String subscriptionId, String destination) {
    SimpMessageHeaderAccessor headers = SimpMessageHeaderAccessor.create(SimpMessageType.SUBSCRIBE);
    headers.setSessionId(sessionId);
    headers.setSubscriptionId(subscriptionId);
    if (destination != null) {
      headers.setDestination(destination);
    }
    return MessageBuilder.withPayload("").copyHeaders(headers.toMap()).build();
  }

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    }
    return MessageBuilder.withPayload("").copyHeaders(headers.toMap()).build();
  }


  private Message<?> unsubscribeMessage(String sessionId, String subscriptionId) {
    SimpMessageHeaderAccessor headers = SimpMessageHeaderAccessor.create(SimpMessageType.UNSUBSCRIBE);
    headers.setSessionId(sessionId);
    headers.setSubscriptionId(subscriptionId);
    return MessageBuilder.withPayload("").copyHeaders(headers.toMap()).build();
  }

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    headers.setSubscriptionId(subscriptionId);
    return MessageBuilder.withPayload("").copyHeaders(headers.toMap()).build();
  }


  private Message<?> message(String destination) {
    SimpMessageHeaderAccessor headers = SimpMessageHeaderAccessor.create();
    headers.setDestination(destination);
    return MessageBuilder.withPayload("").copyHeaders(headers.toMap()).build();
  }

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