How to identify the Build job executor ( Person who is running the build )

Summary: How to identify the Build job executor ( Person who is running the build )

Content (required): Build Job executor is the person who is running the build job (Not VM in this case).

We are planning to append the build log history in the file. Where we are storing the Branch Name, Time Stamp, Input data and also we want to append the name of the person who is running the build job for future reference.

We can add a parameter and make it mandatory, but there any name can be entered.. So we want to pick it from the system.