Gradle : Copy different properties file depending on the environment and create jar - gradle

Question

I am evaluating gradle for my spring boot project. Everything seems to work but here is where I am stuck. I have 2 properties file. One for prod i.e.:
application_prod.properties
and another for qa i.e.:
application_qa.properties
My requirement is such that while I build (create jar file) the project from gradle, I've to rename the properties file to
application.properties
and then build the jar file. As far as I know, gradle has a default build task. So here I've to override it such that it considers only the required properties file and rename it and then build depending on the environment.
How can I achieve this?

Answer 1

What you need to do is to override processResources configuration:
processResources {
def profile = (project.hasProperty('profile') ? project.profile : 'qa').toLowerCase()
include "**/application_${profile}.properties"
rename {
'application.properties'
}
}
With the following piece of code changed you will get the output below:
$ ./gradlew run -Pprofile=PROD
:compileJava UP-TO-DATE
:processResources UP-TO-DATE
:classes UP-TO-DATE
:run
LOL
Profile: PROD
BUILD SUCCESSFUL
Total time: 3.63 secs
$ ./gradlew run -Pprofile=QA
:compileJava UP-TO-DATE
:processResources
:classes
:run
LOL
Profile: QA
BUILD SUCCESSFUL
Total time: 3.686 secs
$ ./gradlew run
:compileJava UP-TO-DATE
:processResources UP-TO-DATE
:classes UP-TO-DATE
:run
LOL
Profile: QA
BUILD SUCCESSFUL
Total time: 3.701 secs
Demo is here.