Run multiple Jobs in parallel via Jenkins Declarative pipeline syntax - jenkins

Question

I want to execute multiple jobs from a single pipeline using declarative syntax in parallel. Can this be possible!! I know we can make a declarative parallel pipeline using "parallel" parameter.
pipeline {
agent any
parallel{
stages {
stage('Test1') {
steps {
sh 'pip install -r requirements.txt'
}
}
stage('Test2') {
steps {
echo 'Stage 2'
sh 'behave -f allure_behave.formatter:AllureFormatter -o allure-results features/scenarios/**/*.feature'
}
}
stage('Test3') {
steps {
script {
allure([
includeProperties: false,
jdk: '',
properties: [],
reportBuildPolicy: 'ALWAYS',
results: [[path: 'allure-results']]
])
}
}
}
}
}
}
Below image will show you the proper flow that I want. Any approach how to do it?

Answer 1

// Pipeline project: SO-69680107-1-parallel-downstream-jobs-matrix
pipeline {
agent any
stages {
stage('Clean Workspace') {
steps {
cleanWs()
}
}
stage('Job matrix') {
matrix {
axes {
axis {
name 'job'
values 'SO-69680107-2', 'SO-69680107-3', 'SO-69680107-k' // , ...
}
}
stages {
stage('Run job') {
steps {
build "$job"
copyFiles( "$WORKSPACE\\..\\$job", "$WORKSPACE")
}
} // stage 'Run job'
}
} // matrix
} // stage 'Job matrix'
stage('List upstream workspace') {
steps {
bat "#dir /b \"$WORKSPACE\""
}
}
} // stages
}
def copyFiles( downstreamWorkspace, upstreamWorkspace ) {
dir("$downstreamWorkspace") {
bat """
#set prompt=\$g\$s
#echo Begin: %time%
dir /b
xcopy /f *.* \"$upstreamWorkspace\\\"
#echo End: %time%
"""
}
}
Template for downstream projects SO-69680107-2, SO-69680107-3, SO-69680107-k:
// Pipeline project: SO-69680107-X
pipeline {
agent any
stages {
stage('Stage X') {
steps {
sh 'set +x; echo "Step X" | tee SO-69680107-X.log; date; sleep 3; date'
}
}
}
}