Grouper Users - Open Discussion List

["Crawford, Jeffrey" <>]

Hi Chris and Keith,

 

Thanks for your responses, I guess part of my problem is that I don’t understand the ActiveMQ model as much, the docs on the wiki were not updated since July of 2017. I don’t know if that means that there is not a lot of support for AMQ or if it’s just a stable product.

 

Perhaps someone who is more familiar with AMQ can let me know what solutions they have found for routing specific areas of the folder structure in grouper to specific queues. I’m looking to do things like:

 

org:financial:apps:banner:exports -> bannerQueue

 

 

org:studentinfo:apps:statusloader:exports -\

                                            -> studentQueue

org:studentinfo:apps:someapp:exports      -/

 

 

                             / -> itsecQueue

org:itsec:apps:seim:exports -

                             \ -> auditQueue

 

I’m getting pushback from our integrations team to not try and support a new queuing protocol. I’m happy to use AMQ if I can get it to work but I think I need some examples at this point.

 

Thanks

Jeffrey C.

From: "Hyzer, Chris" <>
Date: Monday, April 1, 2019 at 7:22 PM
To: Keith Hazelton <>, "Crawford, Jeffrey" <>
Cc: "" <>
Subject: RE: [grouper-users] AMQP vs RabbitMQ

 

I guess at some point we could add another messaging consumer for amqp 1.0… I think we need to pick another java client.  This would not be a small effort.  In the meantime can you please use a 0.9.1 endpoint or the activemq client?  Thanks!

 

From: <> On Behalf Of Keith Hazelton
Sent: Monday, April 01, 2019 4:56 PM
To: Crawford, Jeffrey <>
Cc:
Subject: Re: [grouper-users] AMQP vs RabbitMQ

 

It's an AMQP version issue: 0.9.1 is supported by RabbitMQ, 1.0 is significantly rearchitected and a ActiveMQ support 

RabbitMQ points to a plugin that supports 1.0 but cautions it's not been updated in a while

 

Here's the github location for the AMQP 1.0 plugin for RabbitMQ: https://github.com/rabbitmq/rabbitmq-amqp1.0 

 

               --Keith

 

On Mon, Apr 1, 2019 at 10:42 AM Crawford, Jeffrey <> wrote:

Good Morning,

 

Long story short, our campus uses RedHat FUSE for the messaging queue. We need the routing capabilities of the AMQP, and the RedHat version of ActiveMQ seems to have AMQP capabilities. However when we have tried connect to it using the RabbitMQ connection parameters we get the following error:

 

2019-03-22 16:01:14,129: [AMQP Connection 172.16.92.142:62007] ERROR ForgivingExceptionHandler.log(124) -  - An unexpected connection driver error occured

com.rabbitmq.client.MalformedFrameException: AMQP protocol version mismatch; we are version 0-9-1, server sent signature 0,1,0,0

        at com.rabbitmq.client.impl.Frame.protocolVersionMismatch(Frame.java:170)

        at com.rabbitmq.client.impl.Frame.readFrom(Frame.java:107)

        at com.rabbitmq.client.impl.SocketFrameHandler.readFrame(SocketFrameHandler.java:164)

        at com.rabbitmq.client.impl.AMQConnection$MainLoop.run(AMQConnection.java:571)

        at java.lang.Thread.run(Thread.java:748)

 

Looks like there was a discussion on this back in Aug of 2017 regarding the protocol mismatch between Chris and Keith. I’m not sure what the result of that was.

 

I’m not sure if the RabbitMQ configuration items are supposed to be generic with AMQP, however our “queue expert” is asking the question if Grouper could support AMQP 1.0 since this is what the ActiveMQ version supports. I do notice that in the configuration area notes that the routingKey parameter is ignored for all queues except rabbit. Are there any goals to support AMQP 1.0?

 

If we should be using ActiveMQ natively where we have different stems/folders going to different exchanges that might work to but I was hoping to use the routing capabilities of AMQP so we didn’t have to have a bunch of loader configs for different areas of the folder structure. I didn’t see a way to create a loader config that was pinned to a specific folder though so perhaps I’m missing a good example of how to do this. Any pointers in that regard would be appreciated.

 

Also, let me know if I’m approaching this wrong.

 

Thanks

Jeffrey C.

 

--

_______________________
Keith Hazelton 
Internet2 Trust and Identity