Example usage for org.springframework.messaging Message getHeaders

Introduction

In this page you can find the example usage for org.springframework.messaging Message getHeaders.

Prototype

MessageHeaders getHeaders();

Source Link

Document

Return message headers for the message (never null but may be empty).

Usage

From source file:org.springframework.messaging.converter.AbstractMessageConverter.java

protected boolean canConvertFrom(Message<?> message, Class<?> targetClass) {
    return (supports(targetClass) && supportsMimeType(message.getHeaders()));
}

From source file:org.springframework.messaging.core.GenericMessagingTemplate.java

protected final void doSend(MessageChannel channel, Message<?> message, long timeout) {
    Assert.notNull(channel, "MessageChannel is required");

    Message<?> messageToSend = message;
    MessageHeaderAccessor accessor = MessageHeaderAccessor.getAccessor(message, MessageHeaderAccessor.class);
    if (accessor != null && accessor.isMutable()) {
        accessor.removeHeader(this.sendTimeoutHeader);
        accessor.removeHeader(this.receiveTimeoutHeader);
        accessor.setImmutable();/*from   www  . j  ava 2  s .  c o  m*/
    } else if (message.getHeaders().containsKey(this.sendTimeoutHeader)
            || message.getHeaders().containsKey(this.receiveTimeoutHeader)) {
        messageToSend = MessageBuilder.fromMessage(message).setHeader(this.sendTimeoutHeader, null)
                .setHeader(this.receiveTimeoutHeader, null).build();
    }

    boolean sent = (timeout >= 0 ? channel.send(messageToSend, timeout) : channel.send(messageToSend));

    if (!sent) {
        throw new MessageDeliveryException(message,
                "Failed to send message to channel '" + channel + "' within timeout: " + timeout);
    }
}

From source file:org.springframework.messaging.core.GenericMessagingTemplate.java

@Override
@Nullable/*w  w  w.j  a v a 2s  .  c om*/
protected final Message<?> doSendAndReceive(MessageChannel channel, Message<?> requestMessage) {
    Assert.notNull(channel, "'channel' is required");
    Object originalReplyChannelHeader = requestMessage.getHeaders().getReplyChannel();
    Object originalErrorChannelHeader = requestMessage.getHeaders().getErrorChannel();

    long sendTimeout = sendTimeout(requestMessage);
    long receiveTimeout = receiveTimeout(requestMessage);

    TemporaryReplyChannel tempReplyChannel = new TemporaryReplyChannel(this.throwExceptionOnLateReply);
    requestMessage = MessageBuilder.fromMessage(requestMessage).setReplyChannel(tempReplyChannel)
            .setHeader(this.sendTimeoutHeader, null).setHeader(this.receiveTimeoutHeader, null)
            .setErrorChannel(tempReplyChannel).build();

    try {
        doSend(channel, requestMessage, sendTimeout);
    } catch (RuntimeException ex) {
        tempReplyChannel.setSendFailed(true);
        throw ex;
    }

    Message<?> replyMessage = this.doReceive(tempReplyChannel, receiveTimeout);
    if (replyMessage != null) {
        replyMessage = MessageBuilder.fromMessage(replyMessage)
                .setHeader(MessageHeaders.REPLY_CHANNEL, originalReplyChannelHeader)
                .setHeader(MessageHeaders.ERROR_CHANNEL, originalErrorChannelHeader).build();
    }

    return replyMessage;
}

From source file:org.springframework.messaging.core.GenericMessagingTemplate.java

private long sendTimeout(Message<?> requestMessage) {
    Long sendTimeout = headerToLong(requestMessage.getHeaders().get(this.sendTimeoutHeader));
    return (sendTimeout != null ? sendTimeout : this.sendTimeout);
}

From source file:org.springframework.messaging.core.GenericMessagingTemplate.java

private long receiveTimeout(Message<?> requestMessage) {
    Long receiveTimeout = headerToLong(requestMessage.getHeaders().get(this.receiveTimeoutHeader));
    return (receiveTimeout != null ? receiveTimeout : this.receiveTimeout);
}

From source file:org.springframework.messaging.handler.annotation.reactive.HeaderMethodArgumentResolver.java

@Override
@Nullable//w  w  w.j a  va2 s  .com
protected Object resolveArgumentInternal(MethodParameter parameter, Message<?> message, String name) {

    Object headerValue = message.getHeaders().get(name);
    Object nativeHeaderValue = getNativeHeaderValue(message, name);

    if (headerValue != null && nativeHeaderValue != null) {
        if (logger.isDebugEnabled()) {
            logger.debug("A value was found for '" + name + "', in both the top level header map "
                    + "and also in the nested map for native headers. Using the value from top level map. "
                    + "Use 'nativeHeader.myHeader' to resolve the native header.");
        }
    }

    return (headerValue != null ? headerValue : nativeHeaderValue);
}

From source file:org.springframework.messaging.handler.annotation.reactive.HeaderMethodArgumentResolver.java

@SuppressWarnings("unchecked")
@Nullable//from w  ww .  jav a 2s.c om
private Map<String, List<String>> getNativeHeaders(Message<?> message) {
    return (Map<String, List<String>>) message.getHeaders().get(NativeMessageHeaderAccessor.NATIVE_HEADERS);
}

From source file:org.springframework.messaging.handler.annotation.reactive.PayloadMethodArgumentResolver.java

/**
 * Return the mime type for the content. By default this method checks the
 * {@link MessageHeaders#CONTENT_TYPE} header expecting to find a
 * {@link MimeType} value or a String to parse to a {@link MimeType}.
 * @param message the input message// w  w w .ja  v  a  2  s.  co m
 */
@Nullable
protected MimeType getMimeType(Message<?> message) {
    Object headerValue = message.getHeaders().get(MessageHeaders.CONTENT_TYPE);
    if (headerValue == null) {
        return null;
    } else if (headerValue instanceof String) {
        return MimeTypeUtils.parseMimeType((String) headerValue);
    } else if (headerValue instanceof MimeType) {
        return (MimeType) headerValue;
    } else {
        throw new IllegalArgumentException("Unexpected MimeType value: " + headerValue);
    }
}

From source file:org.springframework.messaging.handler.annotation.support.HeaderMethodArgumentResolver.java

@Override
@Nullable/* w  w  w  . j  a  va  2  s .c  om*/
protected Object resolveArgumentInternal(MethodParameter parameter, Message<?> message, String name)
        throws Exception {

    Object headerValue = message.getHeaders().get(name);
    Object nativeHeaderValue = getNativeHeaderValue(message, name);

    if (headerValue != null && nativeHeaderValue != null) {
        if (logger.isWarnEnabled()) {
            logger.warn("Message headers contain two values for the same header '" + name + "', "
                    + "one in the top level header map and a second in the nested map with native headers. "
                    + "Using the value from top level map. "
                    + "Use 'nativeHeader.myHeader' to resolve to the value from the nested native header map.");
        }
    }

    return (headerValue != null ? headerValue : nativeHeaderValue);
}

From source file:org.springframework.messaging.handler.annotation.support.HeaderMethodArgumentResolver.java

@SuppressWarnings("unchecked")
private Map<String, List<String>> getNativeHeaders(Message<?> message) {
    return (Map<String, List<String>>) message.getHeaders().get(NativeMessageHeaderAccessor.NATIVE_HEADERS);
}