[mod_cluster-issues] [JBoss JIRA] Resolved: (MODCLUSTER-142) Use UUID for auto-generated jvmRoute

[Paul Ferraro (JIRA)]

     [ https://jira.jboss.org/jira/browse/MODCLUSTER-142?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Paul Ferraro resolved MODCLUSTER-142.
-------------------------------------

    Resolution: Done


Created JvmRouteFactory interface.
Implementation is configurable via MCMPHandlerConfiguration.jvmRouteFactory property.
Default implementation is UUIDJvmRouteFactory.
Users of ModClusterListener can override via jvmRouteFactoryClass property.

> Use UUID for auto-generated jvmRoute
> ------------------------------------
>
>                 Key: MODCLUSTER-142
>                 URL: https://jira.jboss.org/jira/browse/MODCLUSTER-142
>             Project: mod_cluster
>          Issue Type: Feature Request
>    Affects Versions: 1.1.0.CR1
>            Reporter: Paul Ferraro
>            Assignee: Paul Ferraro
>             Fix For: 1.1.0.CR2
>
>
> Currently, auto-generated jvm-routes are of the form: bind-address:port:engine-name
> This exposes internal addresses/ports and is not appropriate for production systems.
> To fix that, we can use UUIDs.
> e.g.
> InetAddress connectorAddress;
> int connectorPort;
> String engineName;
> int addressBytes = connectorAddress.getAddress().length;
> int intBytes = Integer.SIZE / Byte.SIZE;
> int charBytes = Character.SIZE / Byte.SIZE;
> ByteBuffer buffer = ByteBuffer.allocate(addressBytes + intBytes + (engineName.length() * charBytes));
> buffer.put(connectorAddress.getAddress());
> buffer.putInt(connectorPort);
> buffer.asCharBuffer().put(engine);
> String jvmRoute = UUID.nameUUIDFromBytes(buffer.array()).toString();
> I can think of 2 disadvantages:
> 1.  UUID jvm-routes will be, on average, longer than the current default, i.e. 36 characters as opposed to ~28.  Not a significant difference there.
> 2.  For development, exposing the address and port via the jvm route might be useful.  To satisfy this requirement, we can make the use of UUIDs configurable.

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