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

Paul Ferraro (JIRA) jira-events at lists.jboss.org
Wed Mar 31 13:22:36 EDT 2010


Use UUID for auto-generated jvmRoute
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                 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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