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From "Rajith Attapattu" <rajit...@gmail.com>
Subject Re: [Axis2] Adding ClusterManager code the the codebase
Date Tue, 06 Feb 2007 17:32:02 GMT
Chamikara please see my reply to Bill questions.
As I mentioned I check and replicate state only at the end of an invocation.
Thats why I changed the ClusterManager interface slightly.

Rajith Attapattu
Red Hat.

On 2/6/07, Chamikara Jayalath <chamikaramj@gmail.com> wrote:
>
> Hi Bill,
>
> This will be called only when clustering is enabled.
>
> Even then we most probably will not be calling it in every property
> change. Rather will be trying to detect updates to the property bags in
> certain places of the execution.
>
> Plus better approaches are always welcome :-)
>
> Chamikara
>
>
> On 2/6/07, Bill Nagy <nagy@watson.ibm.com > wrote:
> >
> > That's what I inferred from the interface -- any time there is a context
> >
> > change or a property change, you want your interface to be invoked.
> > That's an awful lot of method invocations (even if they're no-ops) for
> > something arguably not core to a web services runtime.
> >
> > -Bill
> >
> > On Tue, 2007-02-06 at 21:32 +0530, Chamikara Jayalath wrote:
> > > Hi Dims,
> > >
> > > As this is still is its design stage final approach hs not been
> > > decided. The current code is available in a branch so no affect on the
> >
> > > performance of the trunk.
> > >
> > > A method of the ClusterManager instance hs to be called in events such
> > > as Context creation and removal. Currently these directly get called
> > > from respective places of the context classes (should happen only if a
> >
> > > ClusterManager hs been set i.e. when clustering is enabled).
> > >
> > > Chamikara
> > >
> > >
> > > On 2/6/07, Davanum Srinivas <davanum@gmail.com> wrote:
> > >         Chamikara,
> > >
> > >         New notifications? like what we have already for
> > >         services/modules?
> > >
> > >         -- dims
> > >
> > >         On 2/6/07, Chamikara Jayalath < chamikaramj@gmail.com> wrote:
> > >         > Hi Bill, Dims,
> > >         >
> > >         > The ClusterManager impl will be initiated with the
> > >         ConfigContext. This will
> > >         > be called in places like Context Creation and removal and
> > >         may be property
> > >         > updates (hvnt fully decided yet). When Clustering is not
> > >         present the cost
> > >         > should be reduced to a null check.
> > >         >
> > >         > Chamikara
> > >         >
> > >         >
> > >         >
> > >         >
> > >         > On 2/6/07, Davanum Srinivas < davanum@gmail.com> wrote:
> > >         > > Bill,
> > >         > >
> > >         > > from what i understand, it's in a separate maven module.
> > >         Not in
> > >         > > kernel. So you can ignore it :)
> > >         > >
> > >         > > -- dims
> > >         > >
> > >         > > On 2/6/07, Bill Nagy < nagy@watson.ibm.com > wrote:
> > >         > > > What is the cost of this going to be for someone who
> > >         doesn't want
> > >         > > > clustering/this particular approach to clustering? 
I
> > >         can't infer much
> > >         > > > from the interface -- exactly which respective events
> > >         are you referring
> > >         > > > to?
> > >         > > >
> > >         > > > -Bill
> > >         > > >
> > >         > > >
> > >         > > > On Thu, 2007-02-01 at 23:16 +0530, Chamikara Jayalath
> > >         wrote:
> > >         > > > > At initiation Axis2 will load a ClusterManager
> > >         implementation object
> > >         > > > > (if configured) and will call the methods of it
> > >         whenever respective
> > >         > > > > events occur.
> > >         > > > >
> > >         > > > > Chamikara
> > >         > > > >
> > >         > > > >
> > >         > > > > [1] ClusterManager interface
> > >         > > > >
> > >         > > > > public abstract class ClusterManager {
> > >         > > > >
> > >         > > > >     public abstract void init (ConfigurationContext
> > >         context);
> > >         > > > >     public abstract void addContext (AbstractContext
> > >         context);
> > >         > > > >     public abstract void removeContext
> > >         (AbstractContext context);
> > >         > > > >     public abstract void addProperty (AbstractContext
> > >         context, String
> > >         > > > > propertyName, Object  propertyValue);
> > >         > > > >     public abstract void removeProperty
> > >         (AbstractContext context,
> > >         > > > > String propertyName);
> > >         > > > >     public abstract void touchProperty
> > >         (AbstractContext context,
> > >         > > > > String propertyName);
> > >         > > > >     public abstract void commit ();
> > >         > > > >
> > >         > > > > }
> > >         > > > >
> > >         > > >
> > >         > > >
> > >         > > >
> > >         >
> > >
> > ---------------------------------------------------------------------
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> > >         > > > For additional commands, e-mail:
> > >         axis-dev-help@ws.apache.org
> > >         > > >
> > >         > > >
> > >         > >
> > >         > >
> > >         > > --
> > >         > > Davanum Srinivas :: http://wso2.org/:: Oxygen for Web
> > >         Services Developers
> > >         > >
> > >         > >
> > >         >
> > >
> > ---------------------------------------------------------------------
> > >         > > To unsubscribe, e-mail:
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> > >         > > For additional commands, e-mail:
> > >         axis-dev-help@ws.apache.org
> > >         > >
> > >         > >
> > >         >
> > >         >
> > >
> > >
> > >         --
> > >         Davanum Srinivas :: http://wso2.org/ :: Oxygen for Web
> > >         Services Developers
> > >
> > >
> > ---------------------------------------------------------------------
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> > >
> > >
> >
> >
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> >
> >
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