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

    this.handler.handleReturnValue(PAYLOAD, this.sendToDefaultDestReturnType, inputMessage);


    verify(this.messageChannel, times(1)).send(this.messageCaptor.capture());


    Message<?> message = this.messageCaptor.getAllValues().get(0);
    SimpMessageHeaderAccessor headers = SimpMessageHeaderAccessor.wrap(message);
    assertEquals("/topic/dest.foo.bar", headers.getDestination());
  }

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    handler.handleReturnValue(PAYLOAD, this.noAnnotationsReturnType, inputMessage);


    ArgumentCaptor<MessageHeaders> captor = ArgumentCaptor.forClass(MessageHeaders.class);
    verify(messagingTemplate).convertAndSend(eq("/topic/dest"), eq(PAYLOAD), captor.capture());


    SimpMessageHeaderAccessor headerAccessor =
        MessageHeaderAccessor.getAccessor(captor.getValue(), SimpMessageHeaderAccessor.class);


    assertNotNull(headerAccessor);
    assertTrue(headerAccessor.isMutable());
    assertEquals("sess1", headerAccessor.getSessionId());
    assertNull("Subscription id should not be copied", headerAccessor.getSubscriptionId());
  }

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    this.handler.handleReturnValue(PAYLOAD, this.sendToUserReturnType, inputMessage);


    verify(this.messageChannel, times(2)).send(this.messageCaptor.capture());


    Message<?> message = this.messageCaptor.getAllValues().get(0);
    SimpMessageHeaderAccessor headers = SimpMessageHeaderAccessor.wrap(message);
    assertNull(headers.getSessionId());
    assertNull(headers.getSubscriptionId());
    assertEquals("/user/" + user.getName() + "/dest1", headers.getDestination());


    message = this.messageCaptor.getAllValues().get(1);
    headers = SimpMessageHeaderAccessor.wrap(message);
    assertNull(headers.getSessionId());
    assertNull(headers.getSubscriptionId());
    assertEquals("/user/" + user.getName() + "/dest2", headers.getDestination());
  }

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    this.handler.handleReturnValue(PAYLOAD, this.sendToUserSingleSessionReturnType, inputMessage);


    verify(this.messageChannel, times(2)).send(this.messageCaptor.capture());


    Message<?> message = this.messageCaptor.getAllValues().get(0);
    SimpMessageHeaderAccessor headers = SimpMessageHeaderAccessor.wrap(message);
    assertEquals(sessionId, headers.getSessionId());
    assertEquals(MIME_TYPE, headers.getContentType());
    assertEquals("/user/" + user.getName() + "/dest1", headers.getDestination());
    assertNull("Subscription id should not be copied", headers.getSubscriptionId());


    message = this.messageCaptor.getAllValues().get(1);
    headers = SimpMessageHeaderAccessor.wrap(message);
    assertEquals(sessionId, headers.getSessionId());
    assertEquals("/user/" + user.getName() + "/dest2", headers.getDestination());
    assertEquals(MIME_TYPE, headers.getContentType());
    assertNull("Subscription id should not be copied", headers.getSubscriptionId());
  }

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    Message<?> inputMessage = createInputMessage(sessionId, "sub1", null, null, user);
    this.handler.handleReturnValue(PAYLOAD, this.sendToUserReturnType, inputMessage);


    verify(this.messageChannel, times(2)).send(this.messageCaptor.capture());


    SimpMessageHeaderAccessor headers = SimpMessageHeaderAccessor.wrap(this.messageCaptor.getAllValues().get(0));
    assertEquals("/user/Me myself and I/dest1", headers.getDestination());


    headers = SimpMessageHeaderAccessor.wrap(this.messageCaptor.getAllValues().get(1));
    assertEquals("/user/Me myself and I/dest2", headers.getDestination());
  }

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    this.handler.handleReturnValue(PAYLOAD, this.sendToUserDefaultDestReturnType, inputMessage);


    verify(this.messageChannel, times(1)).send(this.messageCaptor.capture());


    Message<?> message = this.messageCaptor.getAllValues().get(0);
    SimpMessageHeaderAccessor headers = SimpMessageHeaderAccessor.wrap(message);
    assertNull(headers.getSessionId());
    assertNull(headers.getSubscriptionId());
    assertEquals("/user/" + user.getName() + "/queue/dest", headers.getDestination());
  }

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    this.handler.handleReturnValue(PAYLOAD, this.sendToUserDefaultDestReturnType, inputMessage);


    verify(this.messageChannel, times(1)).send(this.messageCaptor.capture());


    Message<?> message = this.messageCaptor.getAllValues().get(0);
    SimpMessageHeaderAccessor headers = SimpMessageHeaderAccessor.wrap(message);
    assertEquals("/user/" + user.getName() + "/queue/dest.foo.bar", headers.getDestination());
  }

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    this.handler.handleReturnValue(PAYLOAD, this.sendToUserSingleSessionDefaultDestReturnType, inputMessage);


    verify(this.messageChannel, times(1)).send(this.messageCaptor.capture());


    Message<?> message = this.messageCaptor.getAllValues().get(0);
    SimpMessageHeaderAccessor headers = SimpMessageHeaderAccessor.wrap(message);
    assertEquals(sessionId, headers.getSessionId());
    assertEquals("/user/" + user.getName() + "/queue/dest", headers.getDestination());
    assertEquals(MIME_TYPE, headers.getContentType());
    assertNull("Subscription id should not be copied", headers.getSubscriptionId());
  }

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    Message<?> inputMessage = createInputMessage(sessionId, "sub1", null, null, null);
    this.handler.handleReturnValue(PAYLOAD, this.sendToUserReturnType, inputMessage);


    verify(this.messageChannel, times(2)).send(this.messageCaptor.capture());


    SimpMessageHeaderAccessor headers = SimpMessageHeaderAccessor.wrap(this.messageCaptor.getAllValues().get(0));
    assertEquals("/user/sess1/dest1", headers.getDestination());
    assertEquals("sess1", headers.getSessionId());


    headers = SimpMessageHeaderAccessor.wrap(this.messageCaptor.getAllValues().get(1));
    assertEquals("/user/sess1/dest2", headers.getDestination());
    assertEquals("sess1", headers.getSessionId());
  }

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  private Message<?> createInputMessage(String sessId, String subsId, String destinationPrefix,
            String destination, Principal principal) {


    SimpMessageHeaderAccessor headerAccessor = SimpMessageHeaderAccessor.create();
    headerAccessor.setSessionId(sessId);
    headerAccessor.setSubscriptionId(subsId);
    if (destination != null && destinationPrefix != null) {
      headerAccessor.setDestination(destinationPrefix + destination);
      headerAccessor.setHeader(DestinationPatternsMessageCondition.LOOKUP_DESTINATION_HEADER, destination);
    }
    if (principal != null) {
      headerAccessor.setUser(principal);
    }
    return MessageBuilder.createMessage(new byte[0], headerAccessor.getMessageHeaders());
  }

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