Example usage for org.springframework.integration IntegrationMessageHeaderAccessor toMessageHeaders

Introduction

In this page you can find the example usage for org.springframework.integration IntegrationMessageHeaderAccessor toMessageHeaders.

Prototype

public MessageHeaders toMessageHeaders() 

Source Link

Document

Return a copy of the underlying header values as a MessageHeaders object.

Usage

From source file:org.springframework.integration.history.MessageHistory.java

@SuppressWarnings("unchecked")
public static <T> Message<T> write(Message<T> message, NamedComponent component,
        MessageBuilderFactory messageBuilderFactory) {
    Assert.notNull(message, "Message must not be null");
    Assert.notNull(component, "Component must not be null");
    Properties metadata = extractMetadata(component);
    if (!metadata.isEmpty()) {
        MessageHistory previousHistory = message.getHeaders().get(HEADER_NAME, MessageHistory.class);
        List<Properties> components = (previousHistory != null) ? new ArrayList<Properties>(previousHistory)
                : new ArrayList<Properties>();
        components.add(metadata);//from  ww  w. j  a  v  a 2  s  .c  om
        MessageHistory history = new MessageHistory(components);

        if (message instanceof MutableMessage) {
            message.getHeaders().put(HEADER_NAME, history);
        } else if (message instanceof ErrorMessage) {
            IntegrationMessageHeaderAccessor headerAccessor = new IntegrationMessageHeaderAccessor(message);
            headerAccessor.setHeader(HEADER_NAME, history);
            Throwable payload = ((ErrorMessage) message).getPayload();
            ErrorMessage errorMessage = new ErrorMessage(payload, headerAccessor.toMessageHeaders());
            message = (Message<T>) errorMessage;
        } else if (message instanceof AdviceMessage) {
            IntegrationMessageHeaderAccessor headerAccessor = new IntegrationMessageHeaderAccessor(message);
            headerAccessor.setHeader(HEADER_NAME, history);
            message = new AdviceMessage<T>(message.getPayload(), headerAccessor.toMessageHeaders(),
                    ((AdviceMessage<?>) message).getInputMessage());
        } else {
            if (!(message instanceof GenericMessage)
                    && (messageBuilderFactory instanceof DefaultMessageBuilderFactory
                            || messageBuilderFactory instanceof MutableMessageBuilderFactory)) {
                if (logger.isWarnEnabled()) {
                    logger.warn("MessageHistory rebuilds the message and produces the result of the ["
                            + messageBuilderFactory + "], not an instance of the provided type ["
                            + message.getClass() + "]. Consider to supply a custom MessageBuilderFactory "
                            + "to retain custom messages during MessageHistory tracking.");
                }
            }
            message = messageBuilderFactory.fromMessage(message).setHeader(HEADER_NAME, history).build();
        }
    }
    return message;
}

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