On Sun, Jun 3, 2012 at 5:22 PM, Afkham Azeez <az...@wso2.com> wrote: > > > On Sun, Jun 3, 2012 at 10:11 AM, Kishanthan Thangarajah < > kishant...@wso2.com> wrote: > >> Currently we are using a manager(CarbonTomcatSessionManager) to handle >> sessions of webapps, but it is not clusterable. For this purpose[1] tomcat >> uses two different managers, DeltaManager and BackupManager. DeltaManager >> replicates sessions to all the nodes in the cluster whereas BackupManager >> replicates to one backup node(primary-secondary session replication). >> >> I tried with the DeltaManager as an initial approach, by making >> CarbonTomcatSessionManager to extend DeltaManager, and it works fine. >> >> Few things to note, >> 1. We can use a TomcatValve to initiate the session replication as same >> as ReplicatonValve[2] of tomcat. >> 2. For clustering, Tomcat uses Tribes as the underlying communication >> framework. Since we already use this in Axis2 clustering, we can use the >> same to send session replication messages(Using Axis2 ClusteringAgent). >> 3. With Axis2 ClusteringAgent, the sending messages has to extend the >> ClusteringMessage class. But with tomcat, there is a separate cluster >> message for session replication called SessionMessage. We have to handle >> both these and have one which is common to both world. >> > > Since we are not using the Tomcat ReplicationValve directly, we can send a > ClusteringMessage which wraps a Tomcat SessionMessage. >
Yes, this is what currently i'm trying. The SessionMessage is wrapped in the axis2 cluster message. This is unwrapped on the receiving node and then the relevant execute method is called on this message by the manager. > > >> 4. Other configuration details are same as what is mentioned here[1]. >> >> Your comments are welcome on this approach. >> >> Thanks, >> Kishanthan. >> [1] http://tomcat.apache.org/tomcat-7.0-doc/cluster-howto.html >> [2] >> http://tomcat.apache.org/tomcat-7.0-doc/api/org/apache/catalina/ha/tcp/ReplicationValve.html >> >> On Wed, Apr 25, 2012 at 10:04 PM, Kishanthan Thangarajah < >> kishant...@wso2.com> wrote: >> >>> >>> >>> On Tue, Apr 24, 2012 at 7:31 PM, Isuru Suriarachchi <is...@wso2.com>wrote: >>> >>>> +1, We've almost completed all the roadmap items for AS 4.5.0. As we've >>>> not feature freezed yet, we can look into this. >>>> >>>> Thanks, >>>> ~Isuru >>>> >>>> >>>> On Tue, Apr 24, 2012 at 7:15 PM, Afkham Azeez <az...@wso2.com> wrote: >>>> >>>>> With the Tomcat OSGification completed, we can finally implement >>>>> support for HTTP session replication. We could tie into the underlying >>>>> Tribes framework to do this. I believe we should write a Tomcat >>>>> HttpSessionReplicationValve which will handle replication of sessions. >>>>> Kishanthan can you own this? Even though this may look like an AppServer >>>>> roadmap item, this is something that will get used throughout the >>>>> platform. >>>> >>>> >>> +1, I will own this. >>> >>> Thanks, >>> Kishanthan. >>> >>>> >>>>> >>>>> -- >>>>> *Afkham Azeez* >>>>> Director of Architecture; WSO2, Inc.; http://wso2.com >>>>> Member; Apache Software Foundation; http://www.apache.org/ >>>>> * <http://www.apache.org/>** >>>>> email: **az...@wso2.com* <az...@wso2.com>* cell: +94 77 3320919 >>>>> blog: **http://blog.afkham.org* <http://blog.afkham.org>* >>>>> twitter: >>>>> **http://twitter.com/afkham_azeez*<http://twitter.com/afkham_azeez> >>>>> * >>>>> linked-in: **http://lk.linkedin.com/in/afkhamazeez* >>>>> * >>>>> * >>>>> *Lean . Enterprise . Middleware* >>>>> >>>>> >>>> >>>> >>>> -- >>>> Isuru Suriarachchi >>>> Technical Lead >>>> WSO2 Inc. http://wso2.com >>>> email : is...@wso2.com >>>> blog : http://isurues.wordpress.com/ >>>> >>>> lean . enterprise . middleware >>>> >>>> >>> >>> >>> -- >>> *Kishanthan Thangarajah* >>> Software Engineer, >>> Development Technologies Team, >>> WSO2, Inc. >>> lean.enterprise.middleware >>> >>> Mobile - +94773426635 >>> Blog - *http://kishanthan.wordpress.com* >>> Twitter - *http://twitter.com/kishanthan* >>> >>> >> >> >> -- >> *Kishanthan Thangarajah* >> Software Engineer, >> Development Technologies Team, >> WSO2, Inc. >> lean.enterprise.middleware >> >> Mobile - +94773426635 >> Blog - *http://kishanthan.wordpress.com* >> Twitter - *http://twitter.com/kishanthan* >> >> > > > -- > *Afkham Azeez* > Director of Architecture; WSO2, Inc.; http://wso2.com > Member; Apache Software Foundation; http://www.apache.org/ > * <http://www.apache.org/>** > email: **az...@wso2.com* <az...@wso2.com>* cell: +94 77 3320919 > blog: **http://blog.afkham.org* <http://blog.afkham.org>* > twitter: **http://twitter.com/afkham_azeez*<http://twitter.com/afkham_azeez> > * > linked-in: **http://lk.linkedin.com/in/afkhamazeez* > * > * > *Lean . Enterprise . Middleware* > > -- *Kishanthan Thangarajah* Software Engineer, Development Technologies Team, WSO2, Inc. lean.enterprise.middleware Mobile - +94773426635 Blog - *http://kishanthan.wordpress.com* Twitter - *http://twitter.com/kishanthan*
_______________________________________________ Dev mailing list Dev@wso2.org http://wso2.org/cgi-bin/mailman/listinfo/dev
