Reading an updated CSV in the same thread in Jmeter

Question

So I have a test plan in Jmeter which reads an Auth token from CSV and does POST request.
But if it fails then I run a script that would update the CSV with a new Auth token.

The problem is that I do 4 different POST in one thread. So when 1 of them fails I run the script and want the other POST in the same thread to read the updated CSV.

But in Jmeter once it reads a CSV file it uses the the same values for the whole thread.
I see option for ALL Threads, Current Thread Group, and Current Thread.
But do not want to even share it in a current thread. I want to read the CSV for every POST in my current thread.

UPDATE from comments below.

My current test plan looks like the following:

HTTP POST --Read Auth Key From auth.csv
IF Controller (if last Sample Not Ok)
    -- Run the Script Update the auth.csv
HTTP POST --Read from auth.csv
IF Controller(if last Sample Not Ok)
    -- Run the Script Update the auth.csv

The problem is the 2nd POST request uses the old values from the CSV and not the new updated csv.

Can you provide what you have currently done, or any ideas you have as to how you would like this accomplished? — rud3y
My Current Test Plan Looks Like This 1)HTTP POST -Read Auth Key From auth.csv 2) IF Controller(if last Sample Not Ok) -- Run the Script Update the auth.csv 3) HTTP POST --Read from auth.csv 4)IF Controller(if last Sample Not Ok) -- Run the Script Update the auth.csv The problem is the second post uses the old values from the CSV and not the new updated csv — user2113551
basically I want to read the same csv file twice in the same thread. Right now ot only reads once for the first time and If I try again to read the same csv it uses the cached values. — user2113551
can you copy that file into another file and read that, then come back and try to read the first one you copied when it changes values? — rud3y
Can't you use CSV Data Set Config and re-read the auth from the csv-file into a variable before each HTTP POST? — ghdalum

Bruno Coitos Bruno Coitos · Accepted Answer · 2017-04-06T17:25:15

To do that you could use each HTTP POST and CSV Data Set Config "inside" a Transaction Controller.

Your Test Plan could be something like this:

Transaction Controller
    CSV Data Set Config
    HTTP POST 

IF Controller (if last Sample Not Ok)
    -- Run the Script Update the auth.csv

Transaction Controller
    CSV Data Set Config
    HTTP POST 

IF Controller (if last Sample Not Ok)
    -- Run the Script Update the auth.csv

Reading an updated CSV in the same thread in Jmeter

1 Answers