[ajug-members] LDAP/JNDI auto reconnect ?

[Dan Marchant]

The sun api allows you to pass in multiple ldap connections separated
by a comma.
(At least it use to).

This helps with failover, etc... Sounds like your problem is related
to failover.
You may want to have 2 directory servers with one acting as a failover
if the other goes down for maintainence, etc...

Hope this helps,

- Dan



On 10/18/06, Sony Antony <sony.antony at gmail.com> wrote:
> Hello:
>
> We have some DirContext objects we hold on to. So that whenever we
> need to access ldap, we dont have to re-instantiate InitialDirContext.
>
> Or at least that was teh idea.
>
> Now we find that if teh ldap is restarted *after* this DirContext
> object is instantiated, this object becomes unusable.
> ( Because the peer side of the original TCP socket it has been holding
> on to has been closed )
> Is there a way around it ?
> We are using the usual "com.sun.jndi.ldap.LdapCtxFactory"
> which supports along with other things connection pooling.
>
> 1. Does it have something we can make use of ?
> 2. When we tried the following code, it didnt give us the pooled connections.
> It gave the pooled connections only when all the connection pool
> parameters were given as system properties through the -D switch.
> Since we dont want to specify these properties for the whole system,
> is there a way to overcome this
>
>
> Hashtable env = new Hashtable(11);
> env.put(Context.INITIAL_CONTEXT_FACTORY,"");
> env.put(Context.PROVIDER_URL, "ldap://hostname:2389/dc=blah..");
> env.put(DirContext.SECURITY_PRINCIPAL, "uid=somebody,...");
> env.put(DirContext.SECURITY_CREDENTIALS, "passwd");
> env.put("com.sun.jndi.ldap.connect.pool", "true");
> env.put("com.sun.jndi.ldap.connect.pool.initsize", "3");
> env.put("com.sun.jndi.ldap.connect.pool.debug", "fine");
> DirContext ctx = new InitialDirContext(env);
>
> Thanks for reading
>
> --sony
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