Set a Jenkins environment variable based on a job parameter

Question

I am trying to set an environment variable based on a choice parameter the user chooses. Each project has a property project dependency. I'd like to have the user choose the project and then load the property name from a property file. Something like

Proj1=property1

Proj2=property2

Proj3=property3

If the user chooses proj1, property1 should be allocated to it automatically.

Answer 1

So if you give choice parameter the name PROJECT_NAME and the choices to be :-

proj1

proj2

proj3

then, Jenkins will automatically assign one of these value(i.e proj1, proj2, proj3) to variable PROJECT_NAME as per the choice triggered to start the build. You can infact use $PROJECT_NAME as a variable anywhere in the job configuration page.

you can use a build shell to perform your mapping the proj1, proj2 and proj3 to property1, property2 and property3.

if [ $PROJECT_NAME = "proj1" ] 
    then <your logic goes here for implementing theme1>
fi
.....