private void populateRoutingInfoHeaders(final Message message, final Envelope envelope) {
if (envelope != null) {
message.setHeader(RabbitMQConstants.ROUTING_KEY, envelope.getRoutingKey());
message.setHeader(RabbitMQConstants.EXCHANGE_NAME, envelope.getExchange());
message.setHeader(RabbitMQConstants.DELIVERY_TAG, envelope.getDeliveryTag());
}
}
public MessageProperties toMessageProperties(
final BasicProperties source, final Envelope envelope, final String charset) {
MessageProperties target = new MessageProperties();
Map<String, Object> headers = source.getHeaders();
if (!CollectionUtils.isEmpty(headers)) {
for (Map.Entry<String, Object> entry : headers.entrySet()) {
String key = entry.getKey();
if (MessageProperties.X_DELAY.equals(key)) {
Object value = entry.getValue();
if (value instanceof Integer) {
target.setReceivedDelay((Integer) value);
}
} else {
target.setHeader(key, convertLongStringIfNecessary(entry.getValue(), charset));
}
}
}
target.setTimestamp(source.getTimestamp());
target.setMessageId(source.getMessageId());
target.setReceivedUserId(source.getUserId());
target.setAppId(source.getAppId());
target.setClusterId(source.getClusterId());
target.setType(source.getType());
Integer deliveryMode = source.getDeliveryMode();
if (deliveryMode != null) {
target.setReceivedDeliveryMode(MessageDeliveryMode.fromInt(deliveryMode));
}
target.setDeliveryMode(null);
target.setExpiration(source.getExpiration());
target.setPriority(source.getPriority());
target.setContentType(source.getContentType());
target.setContentEncoding(source.getContentEncoding());
String correlationId = source.getCorrelationId();
if (StringUtils.hasText(correlationId)) {
target.setCorrelationId(source.getCorrelationId());
}
String replyTo = source.getReplyTo();
if (replyTo != null) {
target.setReplyTo(replyTo);
}
if (envelope != null) {
target.setReceivedExchange(envelope.getExchange());
target.setReceivedRoutingKey(envelope.getRoutingKey());
target.setRedelivered(envelope.isRedeliver());
target.setDeliveryTag(envelope.getDeliveryTag());
}
return target;
}
public void setRabbitExchange(
Exchange camelExchange, Envelope envelope, AMQP.BasicProperties properties, byte[] body) {
Message message;
if (camelExchange.getIn() != null) {
// Use the existing message so we keep the headers
message = camelExchange.getIn();
} else {
message = new DefaultMessage();
camelExchange.setIn(message);
}
if (envelope != null) {
message.setHeader(RabbitMQConstants.ROUTING_KEY, envelope.getRoutingKey());
message.setHeader(RabbitMQConstants.EXCHANGE_NAME, envelope.getExchange());
message.setHeader(RabbitMQConstants.DELIVERY_TAG, envelope.getDeliveryTag());
}
Map<String, Object> headers = properties.getHeaders();
if (headers != null) {
for (Map.Entry<String, Object> entry : headers.entrySet()) {
// Convert LongStrings to String.
if (entry.getValue() instanceof LongString) {
message.setHeader(entry.getKey(), entry.getValue().toString());
} else {
message.setHeader(entry.getKey(), entry.getValue());
}
}
}
if (hasSerializeHeader(properties)) {
Object messageBody = null;
try (InputStream b = new ByteArrayInputStream(body);
ObjectInputStream o = new ObjectInputStream(b); ) {
messageBody = o.readObject();
} catch (IOException | ClassNotFoundException e) {
LOG.warn("Could not deserialize the object");
}
if (messageBody instanceof Throwable) {
LOG.debug("Reply was an Exception. Setting the Exception on the Exchange");
camelExchange.setException((Throwable) messageBody);
} else {
message.setBody(messageBody);
}
} else {
// Set the body as a byte[] and let the type converter deal with it
message.setBody(body);
}
}
public void handleDelivery(
String consumerTag, Envelope envelope, AMQP.BasicProperties properties, byte[] body)
throws java.io.IOException {
String reply = null;
try {
String message = new String(body);
Integer idToFind = (Integer) jsonReader.read(message);
System.out.println("Searching for: " + idToFind);
Book book = bookstore.GetBook(idToFind);
reply = book != null ? jsonWriter.write(book) : "ERROR: BOOK not found";
System.out.println("JSON response: " + reply);
} catch (Exception e) {
reply = "ERROR: internal server error";
System.err.println(e);
} finally {
BasicProperties replyProperties =
new BasicProperties.Builder().correlationId(properties.getCorrelationId()).build();
// you have to send the reply on the client
// the client is blocked until this publish.
// In rpc mode it's important send always a reply.
getChannel().basicPublish("", properties.getReplyTo(), replyProperties, reply.getBytes());
// The message must be removed form the queue.
// Anyway if the sever can't remove the message the client is safe
// with the correlation id attribute.
getChannel().basicAck(envelope.getDeliveryTag(), false);
}
}
