Issue
I'm trying to set up a Jenkins Declarative Pipeline with maven. So far I can get maven to run, but I can't get it to use my defined Maven Settings.xml.
pipeline{
agent any
tools{
maven 'Apache Maven 3.3'
// without mavenSettingsConfig, my settings.xml is not used. With it, this blows up
mavenSettingsConfig: 'Global Maven Settings'
jdk 'jdk9
}
stages {
stage('Preparation'){
steps{
//code checkout stuff here--this works fine
}
}
stage('Build'){
steps{
sh "mvn clean install -P foo"
}
}
}
}
The problem seems to be mavenSettingsConfig. Without that property, I can't figure out how to set the settings.xml, and my custom maven stuff doesn't work. (Profile foo, for example.) With the mavenSettingsConfig, it blows up:
BUG! exception in phase 'canonicalization' in source unit 'WorkflowScript' unexpected NullpointerException....
The documentation has a big TODO in it where it would provide an example for this! So how do I do it?
(Documentation TODO at https://wiki.jenkins.io/display/JENKINS/Pipeline+Maven+Plugin. It actually says "TODO provide a sample with Jenkins Declarative Pipeline")
Solution
my advice is to use the Config File Provider plugin: https://wiki.jenkins.io/display/JENKINS/Config+File+Provider+Plugin
With it, you define your config file once in Jenkins' "Config File Management" screen and then have code like this in your pipeline:
stage('Build'){
steps{
configFileProvider([configFile(fileId: 'my-maven-settings-dot-xml', variable: 'MAVEN_SETTINGS_XML')]) {
sh 'mvn -U --batch-mode -s $MAVEN_SETTINGS_XML clean install -P foo'
}
}
}
Hope it helps
Answered By - Francois Marot
Answer Checked By - Marilyn (JavaFixing Volunteer)