Hi there,
I've just noted something non-intuitive in the Camel 2.0 debug logs that'd
be great to have explained.
My scenario is that I wish to send out an exchange to a JMS queue endpoint.
I require persistence of the exchange by the broker. I do not require a
response.
Similarly the queue is to receive exchanges and not send back a response.
Here is how the producer is defined:
.to(ExchangePattern.InOnly,
jms-sender:com.classactionpl.saveGPSTrackerCollection)
Here is how the consumer is defined:
from(jms-receiver:com.classactionpl.saveGPSTrackerCollection)
.inOnly()
jms-sender and jms-receiver are defined as ActiveMQComponents.
From the doco the above should be enough I would have thought. Persistence
is provided by default for JMS endpoints. The use of the inOnly exchange
pattern should be sufficient to indicate that a reply is not required.
However when sending the message the log shows:
2009-08-30 12:24:01,968 [mousIoService-1] DEBUG
Configuration$CamelJmsTemplate - Sending JMS message to:
queue://com.classactionpl.saveGPSTrackerCollection with message:
ActiveMQObjectMessage {commandId = 0, responseRequired = false, messageId =
null, originalDestination = null, originalTransactionId = null, producerId =
null, destination = null, transactionId = null, expiration = 0, timestamp =
0, arrival = 0, brokerInTime = 0, brokerOutTime = 0, correlationId = null,
replyTo = null, persistent = false, type = null, priority = 0, groupID =
null, groupSequence = 0, targetConsumerId = null, compressed = false, userID
= null, content = org.apache.activemq.util.byteseque...@67ce08c7,
marshalledProperties = null, dataStructure = null, redeliveryCounter = 0,
size = 0, properties =
{collectionIdentification=urn:x-com-classactionpl-becatech-sentinel-trackers:/cn=Becatech
Demo
Trackers,dc=becatech,dc=com,ou=tracker-collections,ou=groups,ou=system},
readOnlyProperties = false, readOnlyBody = false, droppable = false}
responseRequired = false which is what I would expect. However persistent =
false obviously suggests that the exchange will not be persisted by the
broker. Is this indeed the case?
For the response:
2009-08-30 12:24:02,013 [enerContainer-1] DEBUG EndpointMessageListener
- Endpoint[jms-receiver://com.classactionpl.saveGPSTrackerCollection]
consumer receiving JMS message: ActiveMQObjectMessage {commandId = 5,
responseRequired = true, messageId =
ID:Christopher-Hunts-MacBook-Air.local-58232-1251599040542-2:1:1:1:1,
originalDestination = null, originalTransactionId = null, producerId =
ID:Christopher-Hunts-MacBook-Air.local-58232-1251599040542-2:1:1:1,
destination = queue://com.classactionpl.saveGPSTrackerCollection,
transactionId = null, expiration = 0, timestamp = 1251599041968, arrival =
0, brokerInTime = 1251599041969, brokerOutTime = 1251599041992,
correlationId = null, replyTo = null, persistent = true, type = null,
priority = 4, groupID = null, groupSequence = 0, targetConsumerId = null,
compressed = false, userID = null, content =
org.apache.activemq.util.byteseque...@67ce08c7, marshalledProperties =
org.apache.activemq.util.byteseque...@51707653, dataStructure = null,
redeliveryCounter = 0, size = 4675, properties =
{collectionIdentification=urn:x-com-classactionpl-becatech-sentinel-trackers:/cn=Becatech
Demo
Trackers,dc=becatech,dc=com,ou=tracker-collections,ou=groups,ou=system},
readOnlyProperties = true, readOnlyBody = true, droppable = false}
This time I see responseRequired = true (which it isn't) and
persistent=true. I'm presuming that the persistent=true is with respect to
the response, if there was one, which there isn't. Why though is
responseRequired=true?
Thank you for helping me understand what Camel is stating.
Kind regards,
Christopher
--
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