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Posted to dev@nifi.apache.org by Brandon DeVries <br...@jhu.edu> on 2015/08/10 21:13:50 UTC
Re: Help required with my custom controller service
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 <ma...@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: aldrinpiri@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; davidrsmith@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 <davidrsmith@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
> >>
> >>
>
Re: Help required with my custom controller service
Posted by Brandon DeVries <br...@jhu.edu>.
All,
Looks like I should be good now. Thanks.
Brandon
On Mon, Aug 10, 2015 at 4:39 PM DAVID SMITH <da...@btinternet.com>
wrote:
> All
>
> That certainly cured the problem in my case.
>
> Dave
>
> Sent from Yahoo! Mail on Android
>
> ------------------------------
> * From: * Brandon DeVries <br...@jhu.edu>;
> * To: * dev@nifi.apache.org <de...@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 <bb...@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 <ma...@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
> >
>
Re: Help required with my custom controller service
Posted by DAVID SMITH <da...@btinternet.com>.
All
That certainly cured the problem in my case.
Dave
Sent from Yahoo! Mail on Android
Re: Help required with my custom controller service
Posted by Brandon DeVries <br...@jhu.edu>.
Bryan and Mark,
I suspect that will do it. I'll check tomorrow.
Brandon
On Mon, Aug 10, 2015, 4:23 PM Bryan Bende <bb...@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 <ma...@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
>
Re: Help required with my custom controller service
Posted by Bryan Bende <bb...@gmail.com>.
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 <ma...@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
RE: Help required with my custom controller service
Posted by Mark Payne <ma...@hotmail.com>.
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
> 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 <ma...@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: aldrinpiri@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; davidrsmith@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 <davidrsmith@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
>>>>
>>>>
>>