Enhancement - Need to Provide Default Stop Request for Non-reconfigurable App

[fadhilkurnia]

Currently, when Application does not implement the Reconfigurable interface, Gigapaxos will try to use TrivialReconfigurable. However, that reconfigurable will throw an exception when it tries to get the Stop Request in the getStopRequest(.) method.

Moreover, the same exception will also be thrown in different methods, such as getFinalState(.), putInitialState(.), deleteFinalState(.), getEpoch(.), checkpoint(.), and restore(.), with the following exception message:

throw new RuntimeException("Can not get stop request for a non-replicable app");

it would be better for App developer to be provided with DefaultStopRequest when Reconfigurable interface is not implemented. That would drastically reduce the number of implementation efforts required by developers.