Jenkins: groovy DSL: using the ternary operator to distinguish between FreeStyleJob and MatrixJob

Question

I am trying to write a groovy-dsl script for Jenkins to generate two jobs:

• The first job is a FreestyleJob
• The second one is a MatrixJob

Their definitions are almost the same; there are only minor differences between them. Therefore, I want to reuse most of the job code and I came to the following refactoring scenario (please focus in the fifth line, in the ternary operator):

[
    ['toolchainsBuild': false],
    ['toolchainsBuild': true],
].each { Map config ->
    config.toolchainsBuild ? job("job1") : matrixJob("job2") {
        // job definition follows...for example:
        out.println("debug")
        steps {
            cmake {
                buildToolStep {}
            }
        }
        // if (config.toolchainsBuild) {
        //     ... // different actions, depending on the job type
        // }
    }
}

However, this does not work. Proof: debug is printed just once in the logfile (it should appear twice, as I want two different jobs to be defined).

I also tried to wrap the ternary operator and its operands in parentheses, as in:

(config.toolchainsBuild ? job("job1") : matrixJob("job2")) {
// ...

However, this causes a syntax error:

Processing provided DSL script
ERROR: (script, line 20) No signature of method: javaposse.jobdsl.dsl.jobs.MatrixJob.call() is applicable for argument types: (script$_run_closure1$_closure2) values: [script$_run_closure1$_closure2@2cb2656f]
Possible solutions: wait(), label(), any(), wait(long), label(java.lang.String), each(groovy.lang.Closure)
Started calculate disk usage of build
Finished Calculation of disk usage of build in 0 seconds
Started calculate disk usage of workspace
Finished Calculation of disk usage of workspace in 0 seconds
Notifying upstream projects of job completion
Finished: FAILURE

How can I rewrite the above expression to produce two different jobs, depending on the value of the boolean?

I believe the problem is related to the usage of the ternary operator with closures, maybe it is not intended to be used this way?

Answer 1

I managed to solve it this way:

def jobInstance = !config.toolchainsBuild ? job("job1") : matrixJob("job2")

jobInstance.with {
    // ... job definition follows
}

I.e., by using the with method. This way, the closure is only written once.