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From Brandon DeVries <...@jhu.edu>
Subject Re: Help required with my custom controller service
Date Tue, 11 Aug 2015 16:35:32 GMT
All,

Looks like I should be good now.  Thanks.

Brandon

On Mon, Aug 10, 2015 at 4:39 PM DAVID SMITH <davidrsmith@btinternet.com>
wrote:

> All
>
> That certainly cured the problem in my case.
>
> Dave
>
> Sent from Yahoo! Mail on Android
>
> ------------------------------
> * From: * Brandon DeVries <brd@jhu.edu>;
> * To: * dev@nifi.apache.org <dev@nifi.apache.org>;
> * Subject: * Re: Help required with my custom controller service
> * Sent: * Mon, Aug 10, 2015 8:25:58 PM
>
> Bryan and Mark,
>
> I suspect that will do it.  I'll check tomorrow.
>
> Brandon
>
> On Mon, Aug 10, 2015, 4:23 PM Bryan Bende <bbende@gmail.com> wrote:
>
> > Not sure if this is helpful, but there is a section about adding
> > dependencies on controller services at the end of this wiki page:
> >
> >
> >
> https://cwiki.apache.org/confluence/display/NIFI/Maven+Projects+for+Custom+Processors
> >
> >
> > On Monday, August 10, 2015, Mark Payne <markap14@hotmail.com> wrote:
> >
> > > Brandon,
> > >
> > > I've seen this occur when I forgot to add a dependency on the
> > > ssl-context-service-api-nar in my NAR's pom.
> > >
> > > You should have something like:
> > > <dependency>
> > >  <groupId>org.apache.nifi</groupId>
> > >  <artifactId>ssl-context-service-api</artifactId>
> > >  <version>0.3.0-SNAPSHOT</version>
> > >  <type>nar</type>
> > > </dependency>
> > >
> > > Is that by chance the issue, or is there something else going on?
> > >
> > > Thanks
> > > -Mark
> > >
> > > ----------------------------------------
> > > > From: brd@jhu.edu <javascript:;>
> > > > Date: Mon, 10 Aug 2015 19:13:50 +0000
> > > > Subject: Re: Help required with my custom controller service
> > > > To: dev@nifi.apache.org <javascript:;>
> > > >
> > > > All,
> > > >
> > > > Was this ever solved / explained? I'm having a similar issue. If
> > there's
> > > > a simple answer that I'm missing that would be great... otherwise I
> > might
> > > > post an example set of NARs somewhere tomorrow. Probably the simplest
> > > > question first is, if I want to create a custom processor that uses a
> > > > SSLContextService, what dependencies do I need to add where (assuming
> > > we're
> > > > using the processor NAR archetype)? I've created an example that
> > > compiles,
> > > > loads in NiFi, and can be dropped on the graph. However, it can not
> be
> > > > configured to use any currently existing SSLContextService, and any
> > that
> > > > are created have the same UUID issue described by David. Thoughts?
> > > >
> > > > Brandon
> > > >
> > > >
> > > >
> > > > On Tue, Jul 28, 2015 at 10:50 AM Mark Payne <markap14@hotmail.com
> > > <javascript:;>> wrote:
> > > >
> > > >> Dave,
> > > >>
> > > >> In addition to the points that Aldrin brought up, are your
> > CacheService
> > > >> interface
> > > >> and StandardCacheService classes in the same NAR?
> > > >>
> > > >> If they are not in the same NAR, does your NAR for
> > StandardCacheService
> > > >> have a Maven dependency
> > > >> on the NAR that houses CacheService?
> > > >>
> > > >> Thanks
> > > >> -Mark
> > > >>
> > > >> ----------------------------------------
> > > >>> From: aldrinpiri@gmail.com <javascript:;>
> > > >>> Date: Mon, 27 Jul 2015 23:26:58 -0400
> > > >>> Subject: Re: Help required with my custom controller service
> > > >>> To: dev@nifi.apache.org <javascript:;>; davidrsmith@btinternet.com
> > > <javascript:;>
> > > >>>
> > > >>> Dave,
> > > >>>
> > > >>> Some quick notes as I work through your setup.
> > > >>>
> > > >>> Did you create an entry in your
> > > >>> NAR's org.apache.nifi.controller.ControllerService file? This
would
> > be
> > > in
> > > >>> src/main/resources/META-INF/services directory of your project.
It
> > > seems
> > > >>> like this isn't likely the case, but a point that can sometimes
get
> > > >>> overlooked.
> > > >>>
> > > >>> Your accessing of the service property in your processor looks
> good.
> > > >>>
> > > >>> Did you accidentally override
> > > AbstractControllerService#getIdentifier()?
> > > >>> It seems like this could lead to the error you are seeing, but
it
> is
> > > hard
> > > >>> to be sure.
> > > >>>
> > > >>> If you are able to share more code with us, we can provide some
> more
> > > >>> pointed assistance. Have you managed to get your processor and
> > > controller
> > > >>> service running within the test framework [1]? If not, I would
> > suggest
> > > >>> doing so to cut down on iterations in debugging your problems
as
> well
> > > as
> > > >>> providing a means for you to easily step through the code.
> > > >>>
> > > >>> [1]
> > > >>
> > http://nifi.apache.org/docs/nifi-docs/html/developer-guide.html#testing
> > > >>>
> > > >>> On Sun, Jul 26, 2015 at 4:45 PM, DAVID SMITH <
> > > davidrsmith@btinternet.com <javascript:;>
> > > >>>
> > > >>> wrote:
> > > >>>
> > > >>>> Hi
> > > >>>> I have been trying to write a simple Cache Controller Service
that
> > > uses
> > > >> a
> > > >>>> Map to hold <String, String> key/value pairs. I am using
> > > >>>> nifi-0.1.0-incubating. I have created an Interface called
> > CacheService
> > > >>>> which extends ControllerService.public interface CacheService
> > extends
> > > >>>> ControllerService {
> > > >>>>
> > > >>>> I have created an implementation called StandardCacheService
which
> > is
> > > as
> > > >>>> follows:
> > > >>>> public class StandardCacheService extends
> AbstractControllerService
> > > >>>> implements CacheService {
> > > >>>> I have compiled the StandardCacheService and created a nar
which I
> > > have
> > > >>>> then put into my NiFi lib directory, my StandardCacheService
> > > Controller
> > > >>>> Service appears in the Controller services tab of the NiFi
Flow
> > > Settings
> > > >>>> panel, I can edit it and enable it. Also there are no abnormal
log
> > > >> messages.
> > > >>>> However, when I try to configure the CacheService in my test
> > > Processor,
> > > >>>> again I get no errors but when I cannot see my
> StandardCacheService.
> > > My
> > > >>>> processor has the following snippets to implement the Cache
> > > >>>> Service/Controller:
> > > >>>> public static final PropertyDescriptor CACHE_SERVICE = new
> > > >>>> PropertyDescriptor.Builder()
> > > >>>> .name("Cache Service")
> > > >>>> .description("The Controller Service to use in order to obtain
a
> > > >>>> Cache Service")
> > > >>>> .required(false)
> > > >>>> .identifiesControllerService(CacheService.class)
> > > >>>> .build();
> > > >>>>
> > > >>>> final CacheService cache =
> > > >>>>
> > > >>
> > >
> >
> context.getProperty(CACHE_SERVICE).asControllerService(CacheService.class);
> > > >>>>
> > > >>>>
> > > >>>>
> > > >>>>
> > > >>>> When configuring the processor, the 'Cache Service' drop down
> > doesn't
> > > >> show
> > > >>>> a populated list showing my StandardCacheService, but it does
> allow
> > me
> > > >> to
> > > >>>> create a new service, the resulting panel allows me to then
select
> > > >>>> StandardCacheService. When I select 'create' I get a UUID
value in
> > the
> > > >>>> Value property of the Configure Processor panel. When I then
apply
> > > this
> > > >>>> the processor shows a yellow triangle, when I hover over it
I get
> > the
> > > >>>> following message:
> > > >>>> 'Cache Service validated against <UUID> is invalid because
Invalid
> > > >>>> Controller service <UUID> is not a valid Controller
service
> > Identifier
> > > >> or
> > > >>>> does not reference the correct type of Controller service.'
> > > >>>> Can you help please
> > > >>>> Many thanksDave
> > > >>>>
> > > >>>>
> > > >>
> > >
> >
> >
> >
> > --
> > Sent from Gmail Mobile
> >
>

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