Durable subscription across network connector

[carl <ca...@me.com>]

Hi,

I'm having trouble with the following problem. This is my layout with a
Publisher P, Subscriber S and brokers A and B.

P ---> A ---> B ---> S

I need any message that P publishes to any topic to reliably reach S. I
successfully setup a durable subscription between B and S. So that covers
the case where S fails. However, when B fails, the messages published by P
in the time that B is down are lost.

This is my network connector configuration on A:

     <networkConnector 
        name="T:localhost->localhost"
        duplex="false" 
        uri="static:(tcp:/...:61616)" 
        userName="..."
        password="..." 
        networkTTL="2" 
        dynamicOnly="false">
        <staticallyIncludedDestinations>
            <topic physicalName=">"/>
        </staticallyIncludedDestinations>
     </networkConnector> 

Is it possible to configure the network connector so that messages are not
lost while B is down?

Thanks for any help!

Best,

Carl



--
Sent from: http://activemq.2283324.n4.nabble.com/ActiveMQ-User-f2341805.html

Re: Durable subscription across network connector

[Christopher Shannon <ch...@gmail.com>]

First make sure you are using the latest version of the broker.

 Second, are you using a mixture of durable subscriptions and non-durable
subscriptions? If you are you might need to add a forceDurable flag to your
set up. Normally the creation of a durable subscription by S on broker B
should create a network durable subscription for B on broker A which would
collect the messages while B is offline and then forward the messages to B
when B comes back online.  I just added some documentation for this on the
wiki but you can also see it here:
https://issues.apache.org/jira/browse/AMQ-6383



On Sat, Jan 19, 2019 at 4:15 PM carl <ca...@me.com> wrote:

> Hi,
>
> I'm having trouble with the following problem. This is my layout with a
> Publisher P, Subscriber S and brokers A and B.
>
> P ---> A ---> B ---> S
>
> I need any message that P publishes to any topic to reliably reach S. I
> successfully setup a durable subscription between B and S. So that covers
> the case where S fails. However, when B fails, the messages published by P
> in the time that B is down are lost.
>
> This is my network connector configuration on A:
>
>      <networkConnector
>         name="T:localhost->localhost"
>         duplex="false"
>         uri="static:(tcp:/...:61616)"
>         userName="..."
>         password="..."
>         networkTTL="2"
>         dynamicOnly="false">
>         <staticallyIncludedDestinations>
>             <topic physicalName=">"/>
>         </staticallyIncludedDestinations>
>      </networkConnector>
>
> Is it possible to configure the network connector so that messages are not
> lost while B is down?
>
> Thanks for any help!
>
> Best,
>
> Carl
>
>
>
> --
> Sent from:
> http://activemq.2283324.n4.nabble.com/ActiveMQ-User-f2341805.html
>