Jenkins configuration for a project with local project dependencies - jenkins-pipeline

Question

I have a automation project which makes use of .jar of a util project. I am very new to Jenkins so can somebody guide me as to how to create a jenkin job and handle local project jar dependencies aswell.

Answer 1

Since this is jenkins pipeline you need to do the following.
Create a repo with a jenkinsfile*
Create a multi branch pipeline job in jenkins and point to your repo.
When a build is started it will interpret your jenkinsfile and execute all the defined steps.
By making use of a .jar what do you mean? Is it an executable on the same machine? In that case add it to your path and use it when executing a shell or a bat script in the jenkinsfile.
More info here: https://www.jenkins.io/doc/book/pipeline/
*Example jenkinsfile:
pipeline {
agent any
options {
//Discard old builds, not necessary but nice to have
buildDiscarder(logRotator(numToKeepStr: '30', artifactNumToKeepStr: '20'))
}
environment {
// Example of how to retrieve credentials and set them as environment variables
EXAMPLE_CREDENTIAL= credentials('EXAMPLE_CREDENTIAL')
}
stages {
stage('A build step') {
steps {
// do your stuff here, this can also be divided into several stages like one for building the code and one for executing it
}
}
}
// Post build actions, e.g archiving, clean up etc
post {
always {
archiveArtifacts artifacts: '**/*.*', fingerprint: true
deleteDir()
}
}
}

Answer 2

I would not build in dependencies to local projects. If it's just an executable .jar file you can add it as a secret file the same way you add credentials and while executing the job copy it to your workspace like this:
environment {
FILE = credentials('my_file')
}
stages {
stage('Preperation'){
steps {
// Copy your fie to the workspace
sh "cp ${FILE} ${WORKSPACE}"
// Verify the file is copied.
sh "ls -la"
}
}
}
An alternative could be adding the file to your path and access the executable via the command line when executing the job.
If you want the whole project I would definitely check that out. I.e you need to add a a shell command for checking the project out.

Answer 3

Thanks Jan for your direction. I achieved output with the following code:
pipeline
agent any <br/>
stages {<br/>
stage('Building dependent project') { <br/>
steps {<br/>
echo "Building dependent project"<br/>
git (
url: 'https:**********.git',
credentialsId: '***********************',
branch: "master"
)
sh "mvn clean install -DskipTests"
}
}
stage('Building and testing main Project') {
steps {
git (
url: 'https://************.git',
credentialsId: '******************',
branch: "exp3"
)
sh "mvn clean install -Dapp=${App} -Denv=${Envir} -Dversion=${Version}"
}
}
}
}