On May 28, 2013, at 11:56 AM, Strahinja Lazetic <[email protected]> wrote:
> Hi Galder, > > thank you for your response. I can serialize the parameters that I passed in > the constructor upon first start, but they remain the same upon a failover > and recreation of the Callable, so I can not get any new info based on the > failover. Well, but you wanted to have a setEnvironment that takes extra params, so I guess you'll be calling at some point, so can't you just cast the callable to your own and call whatever setters you want? I'm very weary of adding random parameter to setEnvironment for "random" stuff :) > As I mentioned in my example (though maybe not very smart), how can I say to > my Callable that it does not start for the first time but rather it was > restarted. Or any other data that depends on the specific conditions of the > failover (e.g. Callable needs to know a new ip or port that was determined in > the FailoverPolicy based on the available targets...). ^ Maybe your distributed callable could have a reference to your own failover policy and query it? > > Thanks, > Strahinja Lazetic > > > From: Galder Zamarreño <[email protected]> > To: Strahinja Lazetic <[email protected]>; infinispan -Dev List > <[email protected]> > Sent: Tuesday, May 28, 2013 10:58 AM > Subject: Re: [infinispan-dev] Infinispan DEF - Custom parameters upon a > failover > > Hi Strahinja, > > Glad to hear that you're using Infinispan in your master thesis :) > > I have some reservations about adding these methods. > > You can create a custom distributed callable, so why not pass in this info on > construction of the callable, and make sure it's serialized so these > parameters are available when these classes are sent to other nodes? > > Cheers, > > On May 27, 2013, at 6:51 PM, Strahinja Lazetic <[email protected]> wrote: > > > Hi, > > > > I am currently using Infinispan Distributed Execution Framework for my > > Master thesis project and I am wondering if it is possible that a > > DistributedCallable receives some custom parameters from the framework upon > > a failover, besides Cache instance and Set of keys passed in the > > setEnvironment method. As a simplified example, a DistributedCallable wants > > to know whether it was restarted or freshly started. If this is not > > possible, does it make sense to add a new method to the > > DistributedTaskFailoverPolicy which will return a user supplied parameters > > Map and then read it from the setEnvironment method in the > > DistributedCallable? Here are the signatures of the methods I was thinking > > off: > > > > In the DistributedTaskFailoverPolicy class: > > > > Map<Object, Object> getEnvironmentParameters() > > > > In the DistributedCallable class: > > > > setEnvironment(Cache<K, V> cache, Set<K> inputKeys, Map<Object, Object> > > params) > > > > I was free to try to implement this and did not take to much time, so now I > > am wondering if there was already a way to do something like this in the > > Infinispan DEF. > > > > Thank you in advance for your comments and suggestions. > > Strahinja Lazetic > > _______________________________________________ > > infinispan-dev mailing list > > [email protected] > > https://lists.jboss.org/mailman/listinfo/infinispan-dev > > > -- > Galder Zamarreño > [email protected] > twitter.com/galderz > > Project Lead, Escalante > http://escalante.io > > Engineer, Infinispan > http://infinispan.org > > -- Galder Zamarreño [email protected] twitter.com/galderz Project Lead, Escalante http://escalante.io Engineer, Infinispan http://infinispan.org _______________________________________________ infinispan-dev mailing list [email protected] https://lists.jboss.org/mailman/listinfo/infinispan-dev
