Replace String in property file in Jenkins - jenkins

Question

I have a properties file where certain string shoudl be replaced with Jenkins parameter. I ahve tried using the variable directly in the Properties file which did not work.
properties file
DOCKER_TAG_SUFFIX=-REPLACE_RELEASE_VERSION
PROPERTY_FILE_PATH=someproperty
Jenkinsfile snippet
def jboss_parameters = readProperties file: jboss_propfile
jboss_parameters .replaceAll("RELEASE_VERSION",params.RELEASE_VERSION) # try1
jboss_parameters = readFile(jboss_propfile).replaceAll("REPLACE_RELEASE_VERSION",params.RELEASE_VERSION) # try2
# try 3
jboss_parameters.each{k,v ->
if (v == "REPLACE_RELEASE_VERSION" )
jboss_parameters.setProperty($k,params.RELEASE_VERSION)
}
# try 4
def jboss_source_file = new File(jboss_propfile)
def jboss_parameters = jboss_source_file.text.replace("REPLACE_RELEASE_VERSION",params.RELEASE_VERSION)
I am not able to find another way that works for me.
println jboss_parameters output
{DOCKER_TAG_SUFFIX=-REPLACE_RELEASE_VERSION, PROPERTY_FILE_PATH=someproperty}

Answer 1

The readProperties step returns a dictionary (map), not a string, that is crated from the properties file.
Your first attempt (# try1) fails because maps in groovy do not have a replaceAll function like strings have and therefore you will get an error.
Your third attempt (# try3) is failing because you are comparing the map values to REPLACE_RELEASE_VERSION without the - character and therefore the comparison always fails and no values are changed.
I tested the second attempt (# try 2) and it seems to be working, so i am not sure what is your issue, but it is easier to handle properties as a map instead of a string that is retuned from the readFile method.
So if you have only specific properties that need to be updated you can update them directly:
def jboss_parameters = readProperties file: jboss_propfile
jboss_parameters.DOCKER_TAG_SUFFIX = params.RELEASE_VERSION // update relevant property
Or if you have multiple properties that should be modified you can iterate and update each value using the collectEntries method. Something like:
def jboss_parameters = readProperties file: jboss_propfile
updated_parameters = jboss_parameters.collectEntries { key, value ->
[key, value.replaceAll("REPLACE_RELEASE_VERSION",params.RELEASE_VERSION)]
}