Thank you Domenico, this is very helpful. I will use it in conjunction with the
ClusterTopologyListener interface, which I found by looking through the code. I
made a plugin that adds the ClusterTopologyListener instance in the following
way:
@Override
public void registered(ActiveMQServer server) {
server.getClusterManager().getClusterController().addClusterTopologyListener(new
MyClusterTopologyListener(server.getActiveMQServerControl()));
It seems to work as expected.
Thanks again,
Aaron
-----Original Message-----
From: Domenico Francesco Bruscino <[email protected]>
Sent: Monday, April 4, 2022 11:03 AM
To: [email protected]
Subject: [EXTERNAL]:Re: Artemis Cluster Topology Status and Notifications
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Hi Aaron,
there are no direct notification messages generated for cluster’s topology
changes. The management API to get list of nodes in the cluster’s topology is
org.apache.activemq.artemis.api.core.management.ActiveMQServerControl.listNetworkTopology()
[1], see the management documentation [2].
[1]
https://github.com/apache/activemq-artemis/blob/2.21.0/artemis-core-client/src/main/java/org/apache/activemq/artemis/api/core/management/ActiveMQServerControl.java#L1846
[2]
https://activemq.apache.org/components/artemis/documentation/latest/management.html
Regards,
Domenico
On Mon, 4 Apr 2022 at 04:35, Steigerwald, Aaron
<[email protected]> wrote:
> Hello,
>
> Do any of the ActiveMQServerPlugin methods get called for all live
> nodes when a cluster’s topology changes, such as when one master node
> crashes and its slave becomes live? Are any management notification
> messages generated for the same situation? I looked in the code and it
> looks like the CLUSTER_CONNECTION_STOPPED notification is generated on
> the broker that is removed from a cluster gracefully, but it doesn’t
> look like the same message is generated for other nodes in the cluster.
>
> Also, what broker Java method provides the current active (live and
> standby) nodes in the cluster’s topology?
>
> Thank you,
> Aaron Steigerwald
>
