Thanks Matt. I got it. We implemented a similar approach to retry in database failures. I will try that now.
On Thu, Jul 30, 2020 at 3:31 PM Matt Burgess <mattyb...@apache.org> wrote: > Asmath, > > InvokeHttp routes the original flowfile to a number of different > relationships based on things like the status code. For example if > you're looking for a 2xx code but want to retry on that for some > reason, you'd use the "Original" relationship. If you want a retryable > code (5xx) you can use the "Retry" relationship, and so on. If you > need a specific code, you can use RouteOnAttribute to match the > "invokehttp.status.code" attribute to the code(s) you want, and all > that match can be sent back to the original InvokeHttp processor. > > That's a simpler pattern but they can get more complex. For example > you can start the flowfile with an attribute "retries" set to 5, and > before you send the flow file back to InvokeHttp, you'd decrement the > counter with UpdateAttribute and then perhaps drop the flowfile or > send it to some other mechanism after retries becomes zero. Also you > could put a delay in the flow so you're not retrying the same thing as > fast as possible (that could constitute a Denial-Of-Service attack on > the HTTP endpoint you're trying to reach). I can't remember which > relationships from InvokeHttp penalize the flowfile, so there's a > chance that the processor will handle the delay for you (see the > User's Guide section on penalized flowfiles). > > Regards, > Matt > > On Thu, Jul 30, 2020 at 3:38 PM KhajaAsmath Mohammed > <mdkhajaasm...@gmail.com> wrote: > > > > can you please let me know how to use this in NIFI. > > > > On Thu, Jul 30, 2020 at 11:19 AM Otto Fowler <ottobackwa...@gmail.com> > wrote: > >> > >> nipyapi does something like that: > https://github.com/Chaffelson/nipyapi/blob/164351ee2d92f8c4a75989310662bbad0f7bafc4/nipyapi/utils.py#L210 > >> > >> > >> > >> > >> On July 30, 2020 at 11:22:29, KhajaAsmath Mohammed ( > mdkhajaasm...@gmail.com) wrote: > >> > >> Hi, > >> > >> I am looking for some information on how to do retry logic on restapi > until we get specific status code. Please let me know if you have any > approach/templates for this > >> > >> Thanks, > >> Asmath >
