Thanks Jordan, I'll give it a try! On 23 November 2015 at 01:25, Jordan Zimmerman <[email protected]> wrote:
> The cacheChanged() method of ServiceCacheListener is called each time a > change in registrations is noticed. So, you can just respond to that. > > And, out of curiosity, what happens if the service B has been registered > before the service A attaches his listener? > > > Your listener will not get any notifications. However, the ServiceCache > always has a view of the registered instances so you can iterate over it to > get the info you want. > > -Jordan > > On Nov 20, 2015, at 2:58 PM, Fabrizio Cucci <[email protected]> > wrote: > > Hello everyone, > > I'm currently working on a Java project that requires some service > discovery and service coordination capabilities and I was thinking about > using Curator for those purposes. > > One of the main feature I would need is to let one service be notified as > soon as another service becomes available. E.g. the service A starts and at > a certain point it requires some services B. Instead of repeatedly calling > the getInstance method of the ServiceProvider abstraction at regular > intervals until the service B becomes available (polling-like policy), it > would be nice to get notified as soon as the services B becomes available > (i.e. at least one instance has been registered). > > Is it something feasible using something like the ServiceCacheListener ? > If yes, would it be the best way to go? > > And, out of curiosity, what happens if the service B has been registered > before the service A attaches his listener? Does the service A get > immediately notified because the service B is immediately available? > > Thanks in advance for your help and suggestions, > Fabrizio > > >
