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From 尹文才 <>
Subject Re: Trigger timer-driven processor to run from outside NIFI
Date Fri, 14 Jul 2017 07:13:42 GMT
Thanks Koji, I checked the NIFI REST API and it seems that I need to use
Groovy to do it(I don't understand Groovy), is there any Java related
examples which interact with NIFI via REST API? Thanks.


2017-07-14 13:49 GMT+08:00 Koji Kawamura <>:

> Hi Ben,
> Just an idea, using ListenHTTP or HandleHTTPRequest (or whatever
> listener type processor you can use) in front of your processor might
> be helpful. You also need to change your processor to support incoming
> FlowFile as well if it doesn't currently. This way, the outside
> application can send a simple HTTP request to do your processor its
> job.
> Another possible way would be using NiFi REST API, stop the processor
> and then restart it. When the processor is restarted, its onTrigger
> will be called, and it will wait for next time to be scheduled (next
> 5min in your case).
> Thanks,
> Koji
> On Wed, Jul 12, 2017 at 5:04 PM, 尹文才 <> wrote:
> > Hi guys, is it possible for a Java application outside the NIFI
> environment
> > to trigger a timer-driven processor to do its work(I mean its ontrigger
> > method will be called) when the processor is not yet due to be triggered?
> > The reason why I'm asking about this is because I have a Java
> applicatiion
> > with UI outside NIFI and there're some configuration data that could be
> > updated into a database, and my processor in NIFI need to get the updated
> > configuration
> > data from that database as soon as possible, but my processor is
> configured
> > to be timer driven of 5 mins. I hope the processor could be triggered to
> > run after the configuration is updated by the Java application when it's
> > not yet reached
> > the time for it to be triggered. Thanks.
> >
> > Regards,
> > Ben

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