Hello all :-)
This is off the back of my previous questions about clustering..
I've managed to setup a poor man's cluster on our Jboss servers cluster
using message queues. I can get messages passed to the JBoss instance but
I'm having a few issues..
I initially tried to send the entire AddOperationContext obect but I got
defeated when it refused to serialize :)
I then though I'd break it down to its constituent parts, stuff them in
a map and send them off..that worked partially and I am unsure as to
which structures
I can use in order to be able to recreate the entry on the participating
ldap clusters
This is what I do at the moment
Map<String , byte[ ]> attributes = new HashMap( );
ServerEntry entry = addContext.getEntry( );
if( ( entry.get( SchemaConstants.USER_PASSWORD_AT ) != null ) )
{
for( AttributeType attr : entry.getAttributeTypes( ) )
{
EntryAttribute entryAttr = entry.get( attr );
if ( entryAttr.get( ).isBinary( ) )
{
attributes.put( attr.getName( ) ,
entryAttr.getBytes( ) );
}
else
{
attributes.put( attr.getName( ) ,
StringTools.getBytesUtf8( entryAttr.getString( ) ) );
}
}
[send to cluster after this]
Am I missing something? Do I need to add more/less to the Map?
Thank you!
Yiannis Mavroukakis wrote:
That should be ok for our purposes for the time being, as the JBoss
servers will only query their localhost and not any other
server in the cluster (this is done only for redundancy).
Y.
Emmanuel Lecharny wrote:
Hehe not *entirely* manually, I meant that I have to replicate
add/delete/modify through the DS instances in the cluster via
message queues...
This is exactly what the replication does. But replication is not only
about sending changes to other servers, it's also to manage conflict
if you are managing multi-master replication. this is where it's start
to be complex ...
