public BasicProperties fromMessageProperties(
final MessageProperties source, final String charset) {
BasicProperties.Builder target = new BasicProperties.Builder();
target
.headers(this.convertHeadersIfNecessary(source.getHeaders()))
.timestamp(source.getTimestamp())
.messageId(source.getMessageId())
.userId(source.getUserId())
.appId(source.getAppId())
.clusterId(source.getClusterId())
.type(source.getType());
MessageDeliveryMode deliveryMode = source.getDeliveryMode();
if (deliveryMode != null) {
target.deliveryMode(MessageDeliveryMode.toInt(deliveryMode));
}
target
.expiration(source.getExpiration())
.priority(source.getPriority())
.contentType(source.getContentType())
.contentEncoding(source.getContentEncoding());
String correlationId = source.getCorrelationId();
if (StringUtils.hasText(correlationId)) {
target.correlationId(correlationId);
}
String replyTo = source.getReplyTo();
if (replyTo != null) {
target.replyTo(replyTo);
}
return target.build();
}
@Override
public Object fromMessage(Message message) throws MessageConversionException {
Object content = null;
MessageProperties properties = message.getMessageProperties();
if (properties != null) {
String contentType = properties.getContentType();
if (contentType != null && contentType.contains("protobuf")) {
try {
String classId = (String) message.getMessageProperties().getHeaders().get("__TypeId__");
if (classId == null) throw new Exception("no classId found");
Class<?> targetClass = Class.forName(classId);
content = converter.deserialize(message.getBody(), targetClass);
} catch (Exception e) {
throw new MessageConversionException("Failed to convert json-based Message content", e);
}
}
}
if (content == null) {
content = message.getBody();
}
return content;
}
@Override
public Object fromMessage(Message message) throws MessageConversionException {
MessageProperties messageProperties = message.getMessageProperties();
if (messageProperties == null)
throw new MessageConversionException("Cannot decode a message with no properties!");
byte[] body = message.getBody();
if (body == null) return null;
String messageEncoding = messageProperties.getContentEncoding();
if (messageEncoding == null) messageEncoding = this.encoding;
String messageContentType = messageProperties.getContentType();
if (this.contentType != null && !this.contentType.equalsIgnoreCase(messageContentType))
throw new MessageConversionException(
"Cannot understand a message of type " + messageContentType);
try {
return new String(body, messageEncoding);
} catch (UnsupportedEncodingException ex) {
LOG.error("Cannot dencode strings as {}", this.encoding, ex);
throw new MessageConversionException("Cannot dencode strings as " + this.encoding, ex);
}
}
/** Extract "standard" headers from an AMQP MessageProperties instance. */
@Override
protected Map<String, Object> extractStandardHeaders(MessageProperties amqpMessageProperties) {
Map<String, Object> headers = new HashMap<String, Object>();
try {
String appId = amqpMessageProperties.getAppId();
if (StringUtils.hasText(appId)) {
headers.put(AmqpHeaders.APP_ID, appId);
}
String clusterId = amqpMessageProperties.getClusterId();
if (StringUtils.hasText(clusterId)) {
headers.put(AmqpHeaders.CLUSTER_ID, clusterId);
}
String contentEncoding = amqpMessageProperties.getContentEncoding();
if (StringUtils.hasText(contentEncoding)) {
headers.put(AmqpHeaders.CONTENT_ENCODING, contentEncoding);
}
long contentLength = amqpMessageProperties.getContentLength();
if (contentLength > 0) {
headers.put(AmqpHeaders.CONTENT_LENGTH, contentLength);
}
String contentType = amqpMessageProperties.getContentType();
if (StringUtils.hasText(contentType)) {
headers.put(AmqpHeaders.CONTENT_TYPE, contentType);
}
byte[] correlationId = amqpMessageProperties.getCorrelationId();
if (correlationId != null && correlationId.length > 0) {
headers.put(AmqpHeaders.CORRELATION_ID, correlationId);
}
MessageDeliveryMode deliveryMode = amqpMessageProperties.getDeliveryMode();
if (deliveryMode != null) {
headers.put(AmqpHeaders.DELIVERY_MODE, deliveryMode);
}
long deliveryTag = amqpMessageProperties.getDeliveryTag();
if (deliveryTag > 0) {
headers.put(AmqpHeaders.DELIVERY_TAG, deliveryTag);
}
String expiration = amqpMessageProperties.getExpiration();
if (StringUtils.hasText(expiration)) {
headers.put(AmqpHeaders.EXPIRATION, expiration);
}
Integer messageCount = amqpMessageProperties.getMessageCount();
if (messageCount != null && messageCount > 0) {
headers.put(AmqpHeaders.MESSAGE_COUNT, messageCount);
}
String messageId = amqpMessageProperties.getMessageId();
if (StringUtils.hasText(messageId)) {
headers.put(AmqpHeaders.MESSAGE_ID, messageId);
}
Integer priority = amqpMessageProperties.getPriority();
if (priority != null && priority > 0) {
headers.put(MessageHeaders.PRIORITY, priority);
}
String receivedExchange = amqpMessageProperties.getReceivedExchange();
if (StringUtils.hasText(receivedExchange)) {
headers.put(AmqpHeaders.RECEIVED_EXCHANGE, receivedExchange);
}
String receivedRoutingKey = amqpMessageProperties.getReceivedRoutingKey();
if (StringUtils.hasText(receivedRoutingKey)) {
headers.put(AmqpHeaders.RECEIVED_ROUTING_KEY, receivedRoutingKey);
}
Boolean redelivered = amqpMessageProperties.isRedelivered();
if (redelivered != null) {
headers.put(AmqpHeaders.REDELIVERED, redelivered);
}
String replyTo = amqpMessageProperties.getReplyTo();
if (replyTo != null) {
headers.put(AmqpHeaders.REPLY_TO, replyTo);
}
Date timestamp = amqpMessageProperties.getTimestamp();
if (timestamp != null) {
headers.put(AmqpHeaders.TIMESTAMP, timestamp);
}
String type = amqpMessageProperties.getType();
if (StringUtils.hasText(type)) {
headers.put(AmqpHeaders.TYPE, type);
}
String userId = amqpMessageProperties.getUserId();
if (StringUtils.hasText(userId)) {
headers.put(AmqpHeaders.USER_ID, userId);
}
Object replyCorrelation =
amqpMessageProperties.getHeaders().get(AmqpHeaders.STACKED_CORRELATION_HEADER);
if (replyCorrelation instanceof String) {
if (StringUtils.hasText((String) replyCorrelation)) {
headers.put(AmqpHeaders.SPRING_REPLY_CORRELATION, replyCorrelation);
}
}
Object replyToStack =
amqpMessageProperties.getHeaders().get(AmqpHeaders.STACKED_REPLY_TO_HEADER);
if (replyToStack instanceof String) {
if (StringUtils.hasText((String) replyToStack)) {
headers.put(AmqpHeaders.SPRING_REPLY_TO_STACK, replyToStack);
}
}
} catch (Exception e) {
if (logger.isWarnEnabled()) {
logger.warn("error occurred while mapping from AMQP properties to MessageHeaders", e);
}
}
return headers;
}
