On 22/01/18 13:24, andi welchlin wrote:
Hello all,
I want to share an exchange between two brokers (bidirectional).
I understood that the right way to do this is using a dynamic route like:
qpid-route dynamic add $broker1 $broker2 $exchange_name
qpid-route dynamic add $broker2 $broker1 $exchange_name
I also want to achieve that no messages will be lost when one of the
two brokers is down while messages are sent to the other broker.
So I would bind a queue ($queue_out) to $exchange_name on both brokers.
Then I would route on each broker $queue_out to the exchange of the remote
broker.
As far as I understood a dynamic route is then not possible any more.
It would look like:
# install binding from exchange to output queue
qpid-config -b $BROKER1 bind $exchange_name $queue_out
qpid-config -b $BROKER2 bind $exchange_name $queue_out
# install route
qpid-route -d queue add $BROKER2 $BROKER1 $exchange_name $queue_out
qpid-route -d queue add $BROKER1 $BROKER2 $exchange_name $queue_out
qpid-route route map $BROKER2
But this seems to lead to circular messages.
Does anyone have a solution for this scenario?
You can use the "qpid.trace.id" and "qpid.trace.exclude" queue options
for this.
For each of the two forwarding queues, set the id to the name of the
broker the queue is on and set the excludes to a list containing the
other brokers id.
That way messages from the other broker are not enqueued on the
forwarding queue, so will not get forwarded back.
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