Jenkins - matrix jobs - variables on different slaves overwrite each other? - jenkins

Question

I think i dont get how matrix builds work. When i set some variable in some stage depending on which node i run, then on rest of the stage sometimes this variable is set as it should and sometimes it gets values from other nodes (axes). In example below its like job which runs on ub18-1 sometimes has VARIABLE1='Linux node' and sometimes is VARIABLE1='Windows node'. Or gitmethod sometimes it is created from LinuxGitInfo and sometimes WindowsGitInfo.
Source i based on
https://jenkins.io/doc/book/pipeline/syntax/#declarative-matrix
Script almost exactly the same as real one
#Library('firstlibrary') _
import mylib.shared.*
pipeline {
parameters {
booleanParam name: 'AUTO', defaultValue: true, description: 'Auto mode sets some parameters for every slave separately'
choice(name: 'SLAVE_NAME', choices:['all', 'ub18-1','win10'],description:'Run on specific platform')
string(name: 'BRANCH',defaultValue: 'master', description: 'Preferably common label for entire group')
booleanParam name: 'SONAR', defaultValue: false, description: 'Scan and gateway'
booleanParam name: 'DEPLOY', defaultValue: false, description: 'Deploy to Artifactory'
}
agent none
stages{
stage('BuildAndTest'){
matrix{
agent {
label "$NODE"
}
when{ anyOf{
expression { params.SLAVE_NAME == 'all'}
expression { params.SLAVE_NAME == env.NODE}
}}
axes{
axis{
name 'NODE'
values 'ub18-1', 'win10'
}
}
stages{
stage('auto mode'){
when{
expression { return params.AUTO }
}
steps{
echo "Setting parameters for each slave"
script{
nodeLabelsList = env.NODE_LABELS.split()
if (nodeLabelsList.contains('ub18-1')){
println("Setting params for ub18-1");
VARIABLE1 = 'Linux node'
}
if (nodeLabelsList.contains('win10')){
println("Setting params for Win10");
VARIABLE1 = 'Windows node'
}
if (isUnix()){
gitmethod = new LinuxGitInfo(this,env)
} else {
gitmethod = new WindowsGitInfo(this, env)
}
}
}
}
stage('GIT') {
steps {
checkout scm
}
}
stage('Info'){
steps{
script{
sh 'printenv'
echo "branch: " + env.BRANCH_NAME
echo "SLAVE_NAME: " + env.NODE_NAME
echo VARIABLE1
gitinfo = new GitInfo(gitmethod)
gitinfo.init()
echo gitinfo.author
echo gitinfo.id
echo gitinfo.msg
echo gitinfo.buildinfo
}
}
}
stage('install'){
steps{
sh 'make install'
}
}
stage('test'){
steps{
sh 'make test'
}
}
}
}
}
}
}

Answer 1

Ok i solved the problem by defining variables maps with node/slave names as keys. Some friend even suggested to define variables in yml/json file in repository and parse them. Maybe i will, but so far this works well
example:
before the pipelines
def DEPLOYmap = [
'ub18-1': false,
'win10': true
]
in stages
when {
equals expected: true, actual: DEPLOYmap[NODE]
}