topic Wait for Input Feed file in Talend Studio

Wait for Input Feed file

_AnonymousUser — Mon, 23 May 2016 20:35:44 GMT

Hi All
My project requirement is to check on input feed file location did file came from UPSTREAM, if yes the ETL should load it.
In case feed file not came from UPSTREAM wait and check after sometime 3 attempts.
We have component like tWaitFile which is working perfectly once the file arrives.
I need help in case after 3 attempts of checking the file did't came how should i capture the flow and log error.

Thanks

Re: Wait for Input Feed file

Anonymous — Tue, 24 May 2016 07:37:35 GMT

If tWaitForFile is not working for you, then it sounds like you need a loop.
tLoop->tFileExists(NotExists)->tJava_1
(Exists)->tJava_2
In tJava_1, you can Thread.sleep(xxxx) and set a flag (globalMap) to indicate that the file was not found.
In tJava_2, you can set a flag (globalMap) to indicate that the file was found, and do your stuff. You'll also want to set the loop-to value to the current iteration count so that you're loop exists (read the help for the different tLoop options).
You can then have tLoop(OnSubJobOK)->tJava_3
In tJava_3, you test your flag so that you can raise an error if no file was processed.

Re: Wait for Input Feed file

_AnonymousUser — Wed, 25 May 2016 20:34:11 GMT

Thanks mate for taking out the time and replying.