How to save log file separately for every transaction in JMeter?

Question

I wrote one selenium automation javascript in JMeter using a webdriver sampler.

In that, I try to find the total time taken for traversing from first page to last page of the website.

To print time or particular message I used WDS.log.info() function.

When running this script I got output in the .log file. Now, I want to save every log file separately for every transaction?

How we can achieve this?

Or is there any other idea to print or save my script result (which was generated in the log file) in a new file with each transaction?

Answer 1

If you want to print arbitrary data to the separate file you can do something like:

org.apache.commons.io.FileUtils.writeStringToFile(new java.io.File('somefile.log'), 'some-data', 'UTF-8', true)

see the FileUtils.writeStringToFile() JavaDoc for more information.

If you're going to run multiple threads a better idea would be using a JMeter Listener like Flexible File Writer for thread safety. Flexible File Writer listener can be installed using JMeter Plugins Manager