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  2. RPG400-L
  3. May 2019

Re: HTTP API or Web Service concurrency issue

On Fri, May 31, 2019 at 2:54 PM Mike Jones <mike.jones.sysdev@xxxxxxxxx>
wrote:


In step a.1, the IFS output file created contains a timestamp in the file
name, with a precision of 6 fractional seconds. That should do a very good
job ensuring a unique file name, but I see that as a potential problem
where 2 jobs could, in theory, obtain the same exact timestamp, and collide
on the IFS output file name. I'll likely recommend shoring that up to
ensure uniqueness.



Yeah...that could be a problem...

Take a look at the tmpfile() — Create Temporary File API
https://www.ibm.com/support/knowledgecenter/ssw_ibm_i_72/rtref/tempfile.htm
IIRC, HTTP API even makes use of it...

Charles

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