Hello again,

I wanted to follow up on this as I've done some more experimenting. I've found 
that when I use the Core protocol or Openwire protocol, everything works as 
expected. I am able to use the "setStringProperty" in my ActiveMQServerPlugin 
and it adds a header that I can then access in my Camel consumer code. However, 
if I try to add a property to a message that was sent using the AMQP protocol, 
it does not stay set on the message. It appears to me that this is because the 
AMQP message is more protected? Maybe it has all of the data in an immutable 
ByteBuffer? I've tried using the "reencode" method on the 
org.apache.activemq.artemis.protocol.amqp.broker.AMQPMessage class, but it 
causes an error; it can't parse the message back out, it says something about 
an unknown constructor. (Being handled here 
https://github.com/apache/qpid-jms/blob/master/qpid-jms-client/src/main/java/org/apache/qpid/jms/provider/amqp/AmqpConsumer.java#L496)
 

Justin, I've looked at the remoting interceptors. I think I decided against 
using them because it does not expose as much information to me as I wanted. 
I'm specifically trying to take the authentication credentials and then create 
some kind of authentication token to attach to the message that I can then use 
in my consuming code.

Regards,
Harrison Tarr


-----Original Message-----
From: Justin Bertram [mailto:jbert...@redhat.com] 
Sent: Tuesday, September 12, 2017 3:28 PM
To: users@activemq.apache.org
Subject: Re: How to put "properties" on a message so they are accessible later

I'm not terribly familiar with the ActiveMQServerPlugin functionality in this 
regard, but I do know that you can make such modifications to messages using 
remoting interceptors.  Have you explored that possibility?


Justin

On Tue, Sep 12, 2017 at 3:45 PM, Harrison Tarr <harrison.t...@connexta.com>
wrote:

> Right now I'm using Artemis 2.2.0.
> I've done a bit more research and experimentation. It seems that I can 
> set a header in Camel, send the message to a queue/topic hosted on 
> Artemis and read the header as a "stringProperty". The header keys 
> also show up when I do a "getProperties" call. However, if I try to 
> overwrite that field in my ActiveMQServerPlugin (specifically the 
> beforeSend call), the change is not propagated to Camel. IE, if I send a 
> message with the header "testHeader"
> with a value of "testValue", I can see, in Artemis, "testHeader" as a 
> property on the message with the value of "testValue". If I then try 
> to overwrite that value with "newValue", when I access the message and 
> its headers in the consumer, the header is still "testHeader" with the 
> value of "testValue", whereas I expect it to be "testHeader" with a 
> value of "newValue".
>
> Harrison Tarr
>
> -----Original Message-----
> From: tbai...@gmail.com [mailto:tbai...@gmail.com] On Behalf Of Tim 
> Bain
> Sent: Monday, September 11, 2017 6:26 PM
> To: ActiveMQ Users <users@activemq.apache.org>
> Subject: RE: How to put "properties" on a message so they are 
> accessible later
>
> To be clear, you're asking about doing this in Artemis, not ActiveMQ 
> 5.x, right? What version of Artemis?
>
> On Sep 11, 2017 2:48 PM, "Harrison Tarr" <harrison.t...@connexta.com>
> wrote:
>
> > I just wanted to follow up: Does anyone know how to put an 
> > attribute/property on a message in an ActiveMQServerPlugin that I 
> > can then pull out of the message in Camel?
> >
> > Regards,
> > Harrison Tarr
> >
> > -----Original Message-----
> > From: Harrison Tarr [mailto:harrison.t...@connexta.com]
> > Sent: Wednesday, September 6, 2017 8:56 AM
> > To: users@activemq.apache.org
> > Subject: How to put "properties" on a message so they are accessible 
> > later
> >
> > Hi,
> >
> > I'm trying to put a StringProperty on a Message in an 
> > ActiveMQServerPlugin. As far as I can tell, the property gets set 
> > correctly. Later, I'm trying to retrieve the property from a Camel 
> > Exchange. I don't see my property anywhere on the Exchange. I did 
> > notice that it looks like the properties "firedTime" and 
> > "breadcrumbId," which I think come from Artemis, do appear on the 
> > Camel Exchange, which makes me think there is some way to propagate 
> > my
> property from Artemis to Camel.
> >
> > Regards,
> > Harrison Tarr
> >
>

Reply via email to