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: b...@jhu.edu > Date: Mon, 10 Aug 2015 19:13:50 +0000 > Subject: Re: Help required with my custom controller service > To: dev@nifi.apache.org > > 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 <marka...@hotmail.com> 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: aldrinp...@gmail.com >>> Date: Mon, 27 Jul 2015 23:26:58 -0400 >>> Subject: Re: Help required with my custom controller service >>> To: dev@nifi.apache.org; davidrsm...@btinternet.com >>> >>> 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 <davidrsm...@btinternet.com >>> >>> 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 >>>> >>>> >>
