Patch for this issue has been attached to
https://issues.apache.org/jira/browse/SYNAPSE-433

Thanks
Azeez

On Fri, Aug 15, 2008 at 12:16 PM, Asankha C. Perera <[EMAIL PROTECTED]>wrote:

>  Hi Azeez
>
>  At present, u cannot introduce a new LB algorithm impl without code
> changes. Only round-robin load balancing is supported, and the
> implementation has been somewhat hard-coded to use round-robin load
> balancing. Users cannot do a config change and incorporate a new algorithm.
> Ideally, we should let them specify the algorithm impl in the synapse.xml
> file. There are two way this may be done.
>
> *1.*
>
> <definitions xmlns="http://ws.apache.org/ns/synapse";>
>
>   *<loadbalanceAlgorithms>**
> *
> *  <algorithm name="ec2-autoscale-roundrobin"**
> **
> implementation="org.apache.synapse.algorithms.Ec2AutoScaleRoundRobin"/>**
> **  </loadbalanceAlgorithms>*
>
> <endpoint name="dynamicLB">
>   <dynamicLoadbalance failover="true" policy="*ec2-autoscale-roundrobin*">
>   <membershipHandler
>   class="org.apache.synapse.core.axis2.Axis2LoadBalanceMembershipHandler">
>   <property name="applicationDomain" value="apache.axis2.app.domain"/>
>   </membershipHandler>
>   </dynamicLoadbalance>
>
>   </endpoint>
>
> </definitions>
>
> We haven't yet used the synapse.xml to "define" non mediation aspects of
> Synapse. We already do have a synapse.properties, which defines datasources
> for use by the synapse.xml's DB mediators. So I think we should not do this
> in synapse.xml, but the properties file would be good..
>
>  *2.*
>
> <definitions xmlns="http://ws.apache.org/ns/synapse";>
>
> <endpoint name="dynamicLB">
>    <dynamicLoadbalance failover="true" *
> algorithm="org.apache.synapse.algorithms.Ec2AutoScaleRoundRobin"*>
>   <membershipHandler
>   class="org.apache.synapse.core.axis2.Axis2LoadBalanceMembershipHandler">
>   <property name="applicationDomain" value="apache.axis2.app.domain"/>
>   </membershipHandler>
>   </dynamicLoadbalance>
>
>   </endpoint>
>
> </definitions>
>
> Both approaches preserve backwards compatibility. Please send in your
> suggestions.
>
> I think this approach is slightly better, since its all in "one file".. and
> anyway you are just defining the algorithm impl class name as a String
>
> So between the two, I personally prefer option #2
>
> asankha
> --
> Asankha C. Perera
>
> WSO2 - http://wso2.org
> http://esbmagic.blogspot.com
>
>


-- 
Thanks
Afkham Azeez

http://afkham.org
http://www.wso2.org
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