Java Code Examples for org.springframework.messaging.simp.SimpMessageHeaderAccessor#getFirstNativeHeader()

The following examples show how to use org.springframework.messaging.simp.SimpMessageHeaderAccessor#getFirstNativeHeader() . You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example 1
Source File: UserDestinationMessageHandler.java    From spring-analysis-note with MIT License 6 votes vote down vote up 
public void handleUnresolved(Message<?> message) {
	MessageHeaders headers = message.getHeaders();
	if (SimpMessageHeaderAccessor.getFirstNativeHeader(
			SimpMessageHeaderAccessor.ORIGINAL_DESTINATION, headers) != null) {
		// Re-broadcast
		return;
	}
	SimpMessageHeaderAccessor accessor = SimpMessageHeaderAccessor.wrap(message);
	String destination = accessor.getDestination();
	accessor.setNativeHeader(SimpMessageHeaderAccessor.ORIGINAL_DESTINATION, destination);
	accessor.setLeaveMutable(true);
	message = MessageBuilder.createMessage(message.getPayload(), accessor.getMessageHeaders());
	if (logger.isTraceEnabled()) {
		logger.trace("Translated " + destination + " -> " + getBroadcastDestination());
	}
	this.messagingTemplate.send(getBroadcastDestination(), message);
}
Example 2
Source File: DefaultSubscriptionRegistry.java    From spring-analysis-note with MIT License 6 votes vote down vote up 
@Nullable
private Expression getSelectorExpression(MessageHeaders headers) {
	Expression expression = null;
	if (getSelectorHeaderName() != null) {
		String selector = SimpMessageHeaderAccessor.getFirstNativeHeader(getSelectorHeaderName(), headers);
		if (selector != null) {
			try {
				expression = this.expressionParser.parseExpression(selector);
				this.selectorHeaderInUse = true;
				if (logger.isTraceEnabled()) {
					logger.trace("Subscription selector: [" + selector + "]");
				}
			}
			catch (Throwable ex) {
				if (logger.isDebugEnabled()) {
					logger.debug("Failed to parse selector: " + selector, ex);
				}
			}
		}
	}
	return expression;
}
Example 3
Source File: UserDestinationMessageHandler.java    From java-technology-stack with MIT License 6 votes vote down vote up 
public void handleUnresolved(Message<?> message) {
	MessageHeaders headers = message.getHeaders();
	if (SimpMessageHeaderAccessor.getFirstNativeHeader(
			SimpMessageHeaderAccessor.ORIGINAL_DESTINATION, headers) != null) {
		// Re-broadcast
		return;
	}
	SimpMessageHeaderAccessor accessor = SimpMessageHeaderAccessor.wrap(message);
	String destination = accessor.getDestination();
	accessor.setNativeHeader(SimpMessageHeaderAccessor.ORIGINAL_DESTINATION, destination);
	accessor.setLeaveMutable(true);
	message = MessageBuilder.createMessage(message.getPayload(), accessor.getMessageHeaders());
	if (logger.isTraceEnabled()) {
		logger.trace("Translated " + destination + " -> " + getBroadcastDestination());
	}
	this.messagingTemplate.send(getBroadcastDestination(), message);
}
Example 4
Source File: DefaultSubscriptionRegistry.java    From java-technology-stack with MIT License 6 votes vote down vote up 
@Nullable
private Expression getSelectorExpression(MessageHeaders headers) {
	Expression expression = null;
	if (getSelectorHeaderName() != null) {
		String selector = SimpMessageHeaderAccessor.getFirstNativeHeader(getSelectorHeaderName(), headers);
		if (selector != null) {
			try {
				expression = this.expressionParser.parseExpression(selector);
				this.selectorHeaderInUse = true;
				if (logger.isTraceEnabled()) {
					logger.trace("Subscription selector: [" + selector + "]");
				}
			}
			catch (Throwable ex) {
				if (logger.isDebugEnabled()) {
					logger.debug("Failed to parse selector: " + selector, ex);
				}
			}
		}
	}
	return expression;
}
Example 5
Source File: UserDestinationMessageHandler.java    From spring4-understanding with Apache License 2.0 6 votes vote down vote up 
public Message<?> preHandle(Message<?> message) throws MessagingException {
	String destination = SimpMessageHeaderAccessor.getDestination(message.getHeaders());
	if (!getBroadcastDestination().equals(destination)) {
		return message;
	}
	SimpMessageHeaderAccessor accessor = getAccessor(message, SimpMessageHeaderAccessor.class);
	if (accessor.getSessionId() == null) {
		// Our own broadcast
		return null;
	}
	destination = accessor.getFirstNativeHeader(ORIGINAL_DESTINATION);
	if (logger.isTraceEnabled()) {
		logger.trace("Checking unresolved user destination: " + destination);
	}
	SimpMessageHeaderAccessor newAccessor = SimpMessageHeaderAccessor.create(SimpMessageType.MESSAGE);
	for (String name : accessor.toNativeHeaderMap().keySet()) {
		if (NO_COPY_LIST.contains(name)) {
			continue;
		}
		newAccessor.setNativeHeader(name, accessor.getFirstNativeHeader(name));
	}
	newAccessor.setDestination(destination);
	newAccessor.setHeader(SimpMessageHeaderAccessor.IGNORE_ERROR, true); // ensure send doesn't block
	return MessageBuilder.createMessage(message.getPayload(), newAccessor.getMessageHeaders());
}
Example 6
Source File: UserDestinationMessageHandler.java    From spring4-understanding with Apache License 2.0 6 votes vote down vote up 
public void handleUnresolved(Message<?> message) {
	MessageHeaders headers = message.getHeaders();
	if (SimpMessageHeaderAccessor.getFirstNativeHeader(ORIGINAL_DESTINATION, headers) != null) {
		// Re-broadcast
		return;
	}
	SimpMessageHeaderAccessor accessor = SimpMessageHeaderAccessor.wrap(message);
	String destination = accessor.getDestination();
	accessor.setNativeHeader(ORIGINAL_DESTINATION, destination);
	accessor.setLeaveMutable(true);
	message = MessageBuilder.createMessage(message.getPayload(), accessor.getMessageHeaders());
	if (logger.isTraceEnabled()) {
		logger.trace("Translated " + destination + " -> " + getBroadcastDestination());
	}
	this.messagingTemplate.send(getBroadcastDestination(), message);
}
Example 7
Source File: DefaultSubscriptionRegistry.java    From spring4-understanding with Apache License 2.0 6 votes vote down vote up 
@Override
protected void addSubscriptionInternal(String sessionId, String subsId, String destination,
		Message<?> message) {

	Expression expression = null;
	MessageHeaders headers = message.getHeaders();
	String selector = SimpMessageHeaderAccessor.getFirstNativeHeader(getSelectorHeaderName(), headers);
	if (selector != null) {
		try {
			expression = this.expressionParser.parseExpression(selector);
			this.selectorHeaderInUse = true;
			if (logger.isTraceEnabled()) {
				logger.trace("Subscription selector: [" + selector + "]");
			}
		}
		catch (Throwable ex) {
			if (logger.isDebugEnabled()) {
				logger.debug("Failed to parse selector: " + selector, ex);
			}
		}
	}
	this.subscriptionRegistry.addSubscription(sessionId, subsId, destination, expression);
	this.destinationCache.updateAfterNewSubscription(destination, sessionId, subsId);
}
Example 8
Source File: DefaultSubscriptionRegistry.java    From spring4-understanding with Apache License 2.0 6 votes vote down vote up 
@Override
public TypedValue read(EvaluationContext context, Object target, String name) throws AccessException {
	MessageHeaders headers = (MessageHeaders) target;
	SimpMessageHeaderAccessor accessor =
			MessageHeaderAccessor.getAccessor(headers, SimpMessageHeaderAccessor.class);
	Object value;
	if ("destination".equalsIgnoreCase(name)) {
		value = accessor.getDestination();
	}
	else {
		value = accessor.getFirstNativeHeader(name);
		if (value == null) {
			value = headers.get(name);
		}
	}
	return new TypedValue(value);
}
Example 9
Source File: UserDestinationMessageHandler.java    From spring-analysis-note with MIT License 5 votes vote down vote up 
@Nullable
public Message<?> preHandle(Message<?> message) throws MessagingException {
	String destination = SimpMessageHeaderAccessor.getDestination(message.getHeaders());
	if (!getBroadcastDestination().equals(destination)) {
		return message;
	}
	SimpMessageHeaderAccessor accessor =
			SimpMessageHeaderAccessor.getAccessor(message, SimpMessageHeaderAccessor.class);
	Assert.state(accessor != null, "No SimpMessageHeaderAccessor");
	if (accessor.getSessionId() == null) {
		// Our own broadcast
		return null;
	}
	destination = accessor.getFirstNativeHeader(SimpMessageHeaderAccessor.ORIGINAL_DESTINATION);
	if (logger.isTraceEnabled()) {
		logger.trace("Checking unresolved user destination: " + destination);
	}
	SimpMessageHeaderAccessor newAccessor = SimpMessageHeaderAccessor.create(SimpMessageType.MESSAGE);
	for (String name : accessor.toNativeHeaderMap().keySet()) {
		if (NO_COPY_LIST.contains(name)) {
			continue;
		}
		newAccessor.setNativeHeader(name, accessor.getFirstNativeHeader(name));
	}
	if (destination != null) {
		newAccessor.setDestination(destination);
	}
	newAccessor.setHeader(SimpMessageHeaderAccessor.IGNORE_ERROR, true); // ensure send doesn't block
	return MessageBuilder.createMessage(message.getPayload(), newAccessor.getMessageHeaders());
}
Example 10
Source File: DefaultSubscriptionRegistry.java    From spring-analysis-note with MIT License 5 votes vote down vote up 
@Override
public TypedValue read(EvaluationContext context, @Nullable Object target, String name) {
	Object value;
	if (target instanceof Message) {
		value = name.equals("headers") ? ((Message) target).getHeaders() : null;
	}
	else if (target instanceof MessageHeaders) {
		MessageHeaders headers = (MessageHeaders) target;
		SimpMessageHeaderAccessor accessor =
				MessageHeaderAccessor.getAccessor(headers, SimpMessageHeaderAccessor.class);
		Assert.state(accessor != null, "No SimpMessageHeaderAccessor");
		if ("destination".equalsIgnoreCase(name)) {
			value = accessor.getDestination();
		}
		else {
			value = accessor.getFirstNativeHeader(name);
			if (value == null) {
				value = headers.get(name);
			}
		}
	}
	else {
		// Should never happen...
		throw new IllegalStateException("Expected Message or MessageHeaders.");
	}
	return new TypedValue(value);
}
Example 11
Source File: UserDestinationMessageHandler.java    From java-technology-stack with MIT License 5 votes vote down vote up 
@Nullable
public Message<?> preHandle(Message<?> message) throws MessagingException {
	String destination = SimpMessageHeaderAccessor.getDestination(message.getHeaders());
	if (!getBroadcastDestination().equals(destination)) {
		return message;
	}
	SimpMessageHeaderAccessor accessor =
			SimpMessageHeaderAccessor.getAccessor(message, SimpMessageHeaderAccessor.class);
	Assert.state(accessor != null, "No SimpMessageHeaderAccessor");
	if (accessor.getSessionId() == null) {
		// Our own broadcast
		return null;
	}
	destination = accessor.getFirstNativeHeader(SimpMessageHeaderAccessor.ORIGINAL_DESTINATION);
	if (logger.isTraceEnabled()) {
		logger.trace("Checking unresolved user destination: " + destination);
	}
	SimpMessageHeaderAccessor newAccessor = SimpMessageHeaderAccessor.create(SimpMessageType.MESSAGE);
	for (String name : accessor.toNativeHeaderMap().keySet()) {
		if (NO_COPY_LIST.contains(name)) {
			continue;
		}
		newAccessor.setNativeHeader(name, accessor.getFirstNativeHeader(name));
	}
	if (destination != null) {
		newAccessor.setDestination(destination);
	}
	newAccessor.setHeader(SimpMessageHeaderAccessor.IGNORE_ERROR, true); // ensure send doesn't block
	return MessageBuilder.createMessage(message.getPayload(), newAccessor.getMessageHeaders());
}
Example 12
Source File: DefaultSubscriptionRegistry.java    From java-technology-stack with MIT License 5 votes vote down vote up 
@Override
public TypedValue read(EvaluationContext context, @Nullable Object target, String name) {
	Object value;
	if (target instanceof Message) {
		value = name.equals("headers") ? ((Message) target).getHeaders() : null;
	}
	else if (target instanceof MessageHeaders) {
		MessageHeaders headers = (MessageHeaders) target;
		SimpMessageHeaderAccessor accessor =
				MessageHeaderAccessor.getAccessor(headers, SimpMessageHeaderAccessor.class);
		Assert.state(accessor != null, "No SimpMessageHeaderAccessor");
		if ("destination".equalsIgnoreCase(name)) {
			value = accessor.getDestination();
		}
		else {
			value = accessor.getFirstNativeHeader(name);
			if (value == null) {
				value = headers.get(name);
			}
		}
	}
	else {
		// Should never happen...
		throw new IllegalStateException("Expected Message or MessageHeaders.");
	}
	return new TypedValue(value);
}