将动态参数传递给Gradle Jenkins插件

Question

I am using the Gradle Jenkins plugin to create a Jenkins Job that executes a Gradle build. I have a couple of parameters that are always required and these are passed to a Jenkins "Parameterized build". These parameters are correctly passed to gradlew.bat with the following format:

-DParam1=value1 

Now there are some additional parameters that are dynamic in nature and I'd prefer to use a single Jenkins parameter such as "AdditionalParamters" and pass these values like so:

 "-DoptionalParam1=value1 -DOptionalParam2=value2". 

If I use such a parameter, then the value passed to Gradle is "-DAdditionalParamters=-DoptionalParam1=value1 -DOptionalParam2=value2" and this is not what I'd intended to pass.

So are there any means of passing multiple System parameters to gradle by using a single Jenkins parameter?

Answer 1

When Jenkins passes the parameters to Gradle, they are set as Systems Properties. The task now is to parse the "-DoptionalParam1=value1 -DOptionalParam2=value2" passed as an "Additional Parameters" and then pass these further to the Java application as JVM paramters. Below is the Gralde code snippet that does it. To simplify the "Additional Paramter" is passed as "optionalParam1=value1 OptionalParam2=value2", ie without the -D syntax.

    task runJavaApp(type: JavaExec, dependsOn: build) {

        def jvmParams = []
        project.gradle.startParameter.systemPropertiesArgs.entrySet().each{
        if (it.key!="Additional Parameters") {
            jvmParams <<  "-D${it.key}=${it.value}"
        } else {
            def tokens = (it.value).split(/\s{1,}/)
            tokens.each {
                def key, value
                if (it.split('=').length == 2)
                    (key, value )= it.split('=')
                else
                    throw new Exception("'${it}' should be of type key=value");
                jvmParams <<  "-D${key}=${value}"
                }
            }//if
        }
        jvmArgs jvmParams
        workingDir = project.executeDir
        classpath = sourceSets.main.runtimeClasspath + files(project.executeDir)
        main = 'myApplicaionMainClass'
    }