[Hawkular-dev] [metrics] Consistent error replies from REST API

[Lucas Ponce]

> 
> Le 06/03/2015 11:07, Juraci Paixão Kröhling a écrit :
> > I think we should be a bit careful with blindly throwing exceptions
> > and mapping them to responses. Exceptions are more expensive than just
> > checking for an object's existence and, for a public service (SaaS),
> > this could be abused.
> >
> > For scenarios where things were really expected to be there but
> > aren't, exceptions are fine. For scenarios where the user asked for
> > something that didn't exist, input checking and promptly returning a
> > 404 makes more sense, IMO.
> 
> +1

+1