Re: Controller service reference another service

[Vincent Russell]

Yes.  Thank you.

On Mon, Apr 11, 2016 at 11:11 AM, Mark Payne  wrote:

> D'oh! Sorry. You don't have a ProcessContext for Controller Services.
> Controller Services' lifecycles are a bit different than
> Processors and Reporting Tasks. For a Controller Service, you would
> want to use the @OnEnabled annotation and then use the provided
> ConfigurationContext:
>
>
>
> private volatile SSLContextService sslContextService;
>
> @OnEnabled
> public void obtainControllerService(ConfigurationContext context) {
> sslContextService =
> context.getProperty(SSL_CONTEXT_SERVICE).asControllerService(SSLContextService.class);
> }
>
>
> Then you should be able to reference the sslContextService member variable
> from whatever method that you need.
>
> Does this make sense.
>
> Thanks
> -Mark
>
>
> > On Apr 11, 2016, at 10:53 AM, Vincent Russell 
> wrote:
> >
> > Thank you for the response.
> >
> > Where can I make the SSLContextService sslContextService = context
> > .getProperty(SSL_CONTEXT_SERVICE).asControllerService(SSLContextService.
> > class); call?
> >
> > Where do I have access to the context within a ControllerService?
> >
> > Thanks,
> >
> > On Mon, Apr 11, 2016 at 10:11 AM, Mark Payne 
> wrote:
> >
> >> Vincent,
> >>
> >> I moved users@nifi to the BCC and instead am redirecting this to the
> >> dev@nifi mailing list,
> >> as this is developer question moreso than a user question.
> >>
> >> Certainly, you can reference one controller service from another.
> >> Generally, controller services
> >> are referenced by using a PropertyDescriptor that identifies the
> >> controller service. For example:
> >>
> >>public static final PropertyDescriptor SSL_CONTEXT_SERVICE = new
> >> PropertyDescriptor.Builder()
> >>.name("SSL Context Service")
> >>.description("The Controller Service to use in order to
> >> obtain an SSL Context")
> >>.required(false)
> >>.identifiesControllerService(SSLContextService.class)
> >>.build();
> >>
> >> This allows the user to choose the appropriate Controller Service. Node
> >> the 'identifiesControllerService' call.
> >> The service itself is then obtained by calling 'asControllerService' on
> a
> >> PropertyValue object:
> >>
> >> SSLContextService sslContextService = context.getProperty(
> >> SSL_CONTEXT_SERVICE).asControllerService(SSLContextService.class);
> >>
> >> Does this give you what you need?
> >>
> >> Thanks
> >> -Mark
> >>
> >>
> >> On Apr 11, 2016, at 10:04 AM, Vincent Russell <
> vincent.russ...@gmail.com>
> >> wrote:
> >>
> >> Is it possible to user one controller service inside of another service?
> >> Can it be brought in from the ControllerServiceInitializationContext?
> >>
> >> If so, how is this done?
> >>
> >> Thank you,
> >> Vincent
> >>
> >>
> >>
>
>

Re: Controller service reference another service

[Mark Payne]

Vincent,

I moved users@nifi to the BCC and instead am redirecting this to the dev@nifi 
mailing list,
as this is developer question moreso than a user question.

Certainly, you can reference one controller service from another. Generally, 
controller services
are referenced by using a PropertyDescriptor that identifies the controller 
service. For example:

public static final PropertyDescriptor SSL_CONTEXT_SERVICE = new 
PropertyDescriptor.Builder()
.name("SSL Context Service")
.description("The Controller Service to use in order to obtain an 
SSL Context")
.required(false)
.identifiesControllerService(SSLContextService.class)
.build();

This allows the user to choose the appropriate Controller Service. Node the 
'identifiesControllerService' call.
The service itself is then obtained by calling 'asControllerService' on a 
PropertyValue object:

SSLContextService sslContextService = 
context.getProperty(SSL_CONTEXT_SERVICE).asControllerService(SSLContextService.class);

Does this give you what you need?

Thanks
-Mark


> On Apr 11, 2016, at 10:04 AM, Vincent Russell  
> wrote:
> 
> Is it possible to user one controller service inside of another service?  Can 
> it be brought in from the ControllerServiceInitializationContext? 
> 
> If so, how is this done?
> 
> Thank you,
> Vincent