How to read properties file from Jenkins 2.0 pipeline script

Question

I am attempting to write a pipeline script to use with Jenkins 2.0 to replicate our existing build. This original build used the envInject plugin to read a Java properties

Answer 1

i wasn't able to figure out how to interpolate the plain text from readProperties, so i just made a workaround to expand the variable.

def props = readProperties  file: 'dir/my.properties'
def release = expand_property(props['RELEASE'])

def expand_property(property) {
  def info 
  node("anyUnixNode") {
    info = sh(script: "echo $property", returnStdout: true)
  }
  info = info.trim()
  return info   
}