Re: [javagroups-users] TCPPNG#getInitialHosts() ?

[Bela B. <be...@ya...>]

The one you configured in TCPPING ? Just do:

TCPPING.getProperties() and look for "initial_hosts"

Hanson Char wrote:
> I know...I need the original "initial initial hosts", not just the 
> current "initial hosts" :)
>
> Hanson Char
>
> On 6/10/07, *Bela Ban* <be...@ya... <mailto:be...@ya...>> 
> wrote:
>
>     I see, added getInitialHosts(). To use:
>
>     ProtocolStack stack=channel.getProtocolStack();
>     TCPPING ping=(TCPPING)stack.findProtocol("TCPPING");
>     List<Address> initial_hosts=ping.getInitialHosts();
>
>     Note that initial_hosts is mutable, so you can add or remove
>     elements.
>     Or should I make the return value immutable ?
>
>     Hanson Char wrote:
>     > >What do you want to do exactly ?
>     >
>     > I am trying to provide a 2PC activation protocol in ha-jdbc,
>     such that
>     > the 2PC Activation procedure will only be started if a
>     precondition is
>     > satisfied.  The precondition is that every member of the group
>     > statically configured (via TCPPING) must be available.  In other
>     > words, if any such member is down or unreachable, I'd rather the
>     2PC
>     > to not proceed at all.  (Suffice to say the rationale is to provide
>     > data consistency guarantee with all group members having access
>     to the
>     > same database cluster.)
>     >
>     > If I understand TCPPING correctly, group members are statically
>     > configured.  So I am thinking one way to check the precondition
>     is to
>     > compare the "initial hosts" configured against the members
>     dynamically
>     > retrieved from the View (of a JChannel).
>     >
>     > Make any sense ?
>     >
>     >
>
>     --
>     Bela Ban
>     Lead JGroups / JBoss Clustering team
>     JBoss - a division of Red Hat
>
>

-- 
Bela Ban
Lead JGroups / JBoss Clustering team
JBoss - a division of Red Hat