public static JmsProcessingSummary map2FlowFile(
final ProcessContext context,
final ProcessSession session,
final Message message,
final boolean addAttributes,
ProcessorLog logger)
throws Exception {
// Currently not very useful, because always one Message == one FlowFile
final IntegerHolder msgsThisFlowFile = new IntegerHolder(1);
FlowFile flowFile = session.create();
try {
// MapMessage is exception, add only name-value pairs to FlowFile attributes
if (message instanceof MapMessage) {
MapMessage mapMessage = (MapMessage) message;
flowFile = session.putAllAttributes(flowFile, createMapMessageValues(mapMessage));
} else { // all other message types, write Message body to FlowFile content
flowFile =
session.write(
flowFile,
new OutputStreamCallback() {
@Override
public void process(final OutputStream rawOut) throws IOException {
try (final OutputStream out = new BufferedOutputStream(rawOut, 65536)) {
final byte[] messageBody = JmsFactory.createByteArray(message);
out.write(messageBody);
} catch (final JMSException e) {
throw new ProcessException("Failed to receive JMS Message due to {}", e);
}
}
});
}
if (addAttributes) {
flowFile = session.putAllAttributes(flowFile, JmsFactory.createAttributeMap(message));
}
session.getProvenanceReporter().receive(flowFile, context.getProperty(URL).getValue());
session.transfer(flowFile, REL_SUCCESS);
logger.info(
"Created {} from {} messages received from JMS Server and transferred to 'success'",
new Object[] {flowFile, msgsThisFlowFile.get()});
return new JmsProcessingSummary(flowFile.getSize(), message, flowFile);
} catch (Exception e) {
session.remove(flowFile);
throw e;
}
}
