Jenkins Pipeline Build using parameters

Question

I'm trying to execute an existing job ('jenkins-test-project-build') using the build method with Jenkins pipeline.

 build('jenkins-test-project-build', param1 : 'some-value')

When I try to execute this I get te following error:

java.lang.IllegalArgumentException: Expected named arguments but got [{param1=some-value}, jenkins-test-project-build]

at org.jenkinsci.plugins.workflow.cps.DSL.parseArgs(DSL.java:442)

at org.jenkinsci.plugins.workflow.cps.DSL.parseArgs(DSL.java:380)

at org.jenkinsci.plugins.workflow.cps.DSL.invokeStep(DSL.java:156)

at org.jenkinsci.plugins.workflow.cps.DSL.invokeMethod(DSL.java:126)

...

Answer 1

This error occurs because you havent passed the name of the attribute which should store 'jenkins-test-project-build'.

In your case you should pass job attribute,

build(job: 'jenkins-test-project-build', param1 : 'some-value')

Answer 2

First, as @sophie may mentioned it you should name your parameters if you have more than one (you can forget to name it only if you only use the default parameter job, e.g. build 'my-simple-job-without-params').

The second problem is that you are not passing parameters correctly. To pass parameters to a downstream job, you should use the parameter named parameters and give it an array of objects that define each of your parameters, e.g. :

build job: 'jenkins-test-project-build', parameters: [[$class: 'StringParameterValue', name: 'param1', value: "some-value" ]]

Also, note that parenthesis are optional in a Groovy method call.