Vyacheslav, this is exactly what I found. I'm doing [1] (metrics for
services) and realized I have to wrap local calls by a proxy. Is it a
change of public API and should come with major release only? Or we can
declare usage of services without interfaces incorrect?
[1] https://issues.apache.org/jira/browse/IGNITE-12464
вт, 25 февр. 2020 г. в 16:17, Vyacheslav Daradur <daradu...@gmail.com>:
> {IgniteServices#service(String name)} returns direct reference in the
> current implementation.
>
> So, class casting should work for your example:
> ((MyServiceImpl)ignite.services().service(“myService”)).bar();
>
> It is safer to use an interface instead of an implementation, there is no
> guarantee that in future releases direct link will be returned, a service
> instance might be wrapped for monitoring for example.
>
>
> On Tue, Feb 25, 2020 at 4:09 PM Vladimir Steshin <vlads...@gmail.com>
> wrote:
>
>> Vyacheslav, Hi.
>>
>> I see. But can we consider 'locally deployed service' is a proxy too, not
>> direct reference? What if I need to wrap it? This would be local service
>> working via proxy or null.
>>
>> вт, 25 февр. 2020 г. в 16:03, Vyacheslav Daradur <daradu...@gmail.com>:
>>
>>> Hi, Vladimir
>>>
>>> The answer is in API docs: "Gets *locally deployed service* with
>>> specified name." [1]
>>>
>>> That means {IgniteServices#service(String name)} returns only locally
>>> deployed instance or null.
>>>
>>> {IgniteServices#serviceProxy(…)} returns proxy to call instances across
>>> the cluster. Might be used for load-balancing.
>>>
>>> [1]
>>> https://github.com/apache/ignite/blob/56975c266e7019f307bb9da42333a6db4e47365e/modules/core/src/main/java/org/apache/ignite/IgniteServices.java#L569
>>>
>>> On Tue, Feb 25, 2020 at 3:51 PM Vladimir Steshin <vlads...@gmail.com>
>>> wrote:
>>>
>>>> Hello, Igniters.
>>>>
>>>> Previous e-mail was with wrong topic 'daradu...@gmail.com' :)
>>>>
>>>> I got a question what exactly IgniteServices#service(String name) is
>>>> supposed to return: reference to the object or a proxy for some reason like
>>>> IgniteServices#serviceProxy(…)? Vyacheslav D., can you tell me your
>>>> opinion?
>>>>
>>>> public interface MyService {
>>>>
>>>> public void foo();
>>>>
>>>> }
>>>>
>>>> public class MyServiceImpl implements Service, MyService {
>>>>
>>>> @Override public void foo(){ … }
>>>>
>>>> public void bar(){ … };
>>>>
>>>> }
>>>>
>>>>
>>>> // Is it required to support
>>>>
>>>> MyServiceImpl srvc = ignite.services().service(“myService”);
>>>>
>>>> srvc.foo();
>>>>
>>>> srvc.bar();
>>>>
>>>>
>>>>
>>>> // Or is the only correct way:
>>>>
>>>> MyService srvc = ignite.services().service(“myService”);
>>>>
>>>> srvc.foo();
>>>>
>>>>
>>>
>>> --
>>> Best Regards, Vyacheslav D.
>>>
>>
>
> --
> Best Regards, Vyacheslav D.
>
