On Tue, May 13, 2014 at 4:30 PM, Amal Gunatilake <am...@wso2.com> wrote:
> Hi All, > > Following updates has been discussed on $subject. > > 1) The isCoordinator check is not necessary for publishing the cache > invalidation message. > 2) Separate the implementation of publisher and subscriber into 2 classes. > 3) Alter the implementation to support, when the isCoordinator node goes > down; the next coordinator node should get auto subscribe to the topic. > > The 3rd point was discussed to implement as follows: > > The osgi service implementation bundle will be present at all nodes. So it > will check whether "Am I the coordinator?" in a given time interval (This > time interval can be configured in cache.xml). When one node goes down then > the next coordinator will become the coordinator. At this point "Am I the > coordinator?" will get the response and it will subscribe it-self to the > topic. > There is a better way of implementing this. When a node becomes a coordinator, it would notify all OSGi services which implement that interface. I already have this implemented in C5 kernel (must check). We need to bring that back in. Rather than have a task that checks whether I am the coordinator, we should use this notification based mechanism. > > Please update the thread if there are any further updates. > > Thank you & Best regards, > > *Amal Gunatilake* > Software Engineer > WSO2 Inc.; http://wso2.com > lean.enterprise.middleware > -- *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 <http://lk.linkedin.com/in/afkhamazeez>* *Lean . Enterprise . Middleware*
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