Sorry, Try this link: https://pasteboard.co/IXejthc.png
On Mon, Mar 2, 2020 at 9:35 AM Midhun Mohan <midhun.mo...@esginc.us> wrote: > Hi Eduardo, > Can you please send the Image again, I am not able to open it > > On Mon, 2 Mar 2020 at 18:02, Eduardo Fontes <eduardo.fon...@gmail.com> > wrote: > > > Hi Midhun, > > > > I think this flow will do what you want. > > > > [image: image.png] > > > > Be advised that use of Wait/Notify will slow down the average throughput > > of your flow because the aditional steps with the Cache. > > > > > > > > > > On Sun, Mar 1, 2020 at 12:57 PM Midhun Mohan <midhun.mo...@esginc.us> > > wrote: > > > >> So I would like to know your suggestions on how to implement wait and > >> notify. > >> > >> In my case messages will flow one after another > >> > >> If a failure occurs I need to retry the failure before the orginal ones, > >> and notify users if it fails again. > >> > >> > >> On Sun, 1 Mar 2020, 6:31 pm Emanuel Oliveira, <emanu...@gmail.com> > wrote: > >> > >> > Hi, > >> > > >> > Invokehttp have 4 exits > >> > - success > >> > - error retry -> loop/count retries (updateattribite) -> if retries > > >> max > >> > then logmessage(error) flow stops here ff discarded Otherwise loop > >> back to > >> > invokehttp. > >> > - error type 2 (bad password etc, ) > >> > - error type 3 (connectivity problems) you may want also to loop this > >> one > >> > with some delay , count retries and exit /log/stop after max. > >> > > >> > I just highly advise prior to invokehttp to have an updateattribute > >> > deleting all attributes that don't start with some prefix.. to be sure > >> your > >> > ff looping doesnt keep adfing different errors, attributes wriiten by > >> > invoke http. > >> > > >> > As good practice we prefix name all control attributes with > >> flow_xxxxxxx so > >> > our "cleanup," Updateattribute before Invokehttp have special regex > >> sayng > >> > "delete all attributes that don't start with flow_ > >> > (If you interested tomorrow when im back in office i csn share the > >> regex a > >> > bit tricky). > >> > > >> > Hope this helps, i just would love all processors to be as good as > >> > invokehttp providing hard multipke exit points for specifics + all the > >> nice > >> > write attributes invokehttp adds that ptovide high details on errors > or > >> > success (atttibutes created/added by invokehttp to ff are prefixed > with > >> > invoke.xxxxx > >> > > >> > Cheers, > >> > Emanuel O. > >> > > >> > > >> > > >> > > >> > > >> > > >> > On Sun, 1 Mar 2020, 12:42 Midhun Mohan, <midhun.mo...@esginc.us> > wrote: > >> > > >> > > Hi my use case is > >> > > > >> > > When a invokehttp processor fails I need to stop the incoming > message > >> and > >> > > retry the failed message 2 times and if it is success start the > >> execution > >> > > normally or if it fails again need to notify admins and stop the > main > >> > > invoke http processor. > >> > > > >> > > > >> > > > >> > > Hope you can get the scenario from this > >> > > > >> > > On Sun, 1 Mar 2020, 5:30 pm Eduardo Fontes, < > eduardo.fon...@gmail.com > >> > > >> > > wrote: > >> > > > >> > > > Hi Midhun, > >> > > > > >> > > > You can use DistributedMapCacheServer which starts a cache service > >> > within > >> > > > NiFi's process, but I not recommend in production. Instead you > could > >> > use > >> > > > RedisConnectionPoolService. > >> > > > > >> > > > To use solution Wait/Notify the NiFi must know the number of > >> flowfiles > >> > to > >> > > > process in one queue before start another queue. If it is a > batch/on > >> > > demand > >> > > > flow I think it's easier. If it is a continuos/streamming flow you > >> must > >> > > > define a window, by number of flowfiles or by time, to switch > >> between > >> > > > queues. > >> > > > > >> > > > Please let me know what is your case. > >> > > > > >> > > > On Fri, Feb 28, 2020 at 2:39 PM Midhun Mohan < > >> midhun.mo...@esginc.us> > >> > > > wrote: > >> > > > > >> > > > > I think wait and notify can solve my problem. I checked the > >> > documents , > >> > > > > which is bit unclear to me. Can anyone help me? > >> > > > > > >> > > > > Just to know few things like whether we need to configure a > cache > >> > > server, > >> > > > > if so which one is best > >> > > > > And also getting confused on how to configure wait and notify > >> signals > >> > > > > > >> > > > > On Fri, 28 Feb 2020, 10:59 pm Eduardo Fontes, < > >> > > eduardo.fon...@gmail.com> > >> > > > > wrote: > >> > > > > > >> > > > > > Hi! Maybe you should try another approach, like Wait/Notify or > >> > > > configure > >> > > > > > prioritizer just before the funnel, depending on your demand. > >> > > > > > > >> > > > > > On Fri, Feb 28, 2020 at 11:40 AM Midhun Mohan < > >> > > midhun.mo...@esginc.us> > >> > > > > > wrote: > >> > > > > > > >> > > > > > > Hi all, > >> > > > > > > How to prioritize one queue before a funnel? > >> > > > > > > > >> > > > > > > I need to make sure one queue is emptied before another > >> queue is > >> > > > taken > >> > > > > > > over for executing, I tried with a priority attribute but it > >> > fails > >> > > > > when a > >> > > > > > > queue with less priority has messages before the queue with > >> high > >> > > > > > priority. > >> > > > > > > > >> > > > > > > -- > >> > > > > > > > >> > > > > > > > >> > > > > > > Regards, > >> > > > > > > Midhun Mohan > >> > > > > > > > >> > > > > > > >> > > > > > >> > > > > >> > > > >> > > >> > > > > -- > > > Regards, > Midhun Mohan >
