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Posted to users@nifi.apache.org by Vincent Russell <vi...@gmail.com> on 2016/04/11 16:04:58 UTC
Controller service reference another service
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
Posted by Vincent Russell <vi...@gmail.com>.
Yes. Thank you.
On Mon, Apr 11, 2016 at 11:11 AM, Mark Payne <ma...@hotmail.com> 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 <vi...@gmail.com>
> 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 <ma...@hotmail.com>
> 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.russell@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
Posted by Mark Payne <ma...@hotmail.com>.
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 <vi...@gmail.com> 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 <ma...@hotmail.com> 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 <vi...@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
Posted by Vincent Russell <vi...@gmail.com>.
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 <ma...@hotmail.com> 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 <vi...@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
Posted by Mark Payne <ma...@hotmail.com>.
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 <vi...@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
Posted by Mark Payne <ma...@hotmail.com>.
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 <vi...@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