Cannot have multiple instance in-process listening on different sockets / ports
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Key: DIRSERVER-1151
URL: https://issues.apache.org/jira/browse/DIRSERVER-1151
Project: Directory ApacheDS
Issue Type: Bug
Components: ldap
Environment: Windows, JRE 1.5*
Reporter: Lee Feigenbaum
http://issues.apache.org/jira/browse/DIRSERVER-485 is a closed issue regarding
allowing multiple directory service instances to co-exist in a single process.
It was solved by multiplexing directory service instances based on the
configuration instance (as given by the Configuration.JNDI_KEY in the
environment) which in turn returns the proper instance via .getInstanceId().
However, there appears to be no way to create two instances based on
ServerStartupConfiguration's and multiplex from the socket (port) on which each
listens to down to the proper environment (and therefore to the proper
directory service). Instead, whichever directory service is created last
"wins", and all LDAP requests that come in over TCP/IP end up going to that
instance, regardless of which port they arrive on.
I was going to try to patch this myself, but I'm not sure where the proper
state is that would be the right point to multiplex from socket -> environment.
Right now, the environment is tied to a (singleton) SessionRegistry, which is
wiped out (via SessionRegistry.releaseSingleton()) when a new
LdapProtocolProvider is instantiated. If SessionRegistry were changed to map
from ??? to different instances, there would still need to be multiplexing code
for handling messages that passes them onto the proper SessionRegistry. Right
now, messages seem to only be multiplexed based on type.
Anyway, sorry this is a bit disjointed; I only started digging into the Apache
DS code yesterday to figure out why my two instances on different ports were
trampling on each other. I hope this is helpful and resolvable :)
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