In Jenkins Pipeline, you can use conditional stages or steps to control the flow of your pipeline based on specific conditions. Here are some ways you can achieve this:
When: You can use the "when" directive to execute a stage or step based on a specific condition. For example:
stage('Deploy') {
when {
branch 'master'
}
steps {
// deploy to production
}
}In this example, the "Deploy" stage will only be executed if the pipeline is running on the "master" branch.
Script: You can also use the "script" directive to run a block of Groovy code that evaluates a condition. For example:
stage('Build') {
steps {
// build code
}
}
stage('Deploy') {
steps {
script {
if (env.BUILD_STATUS == 'SUCCESS') {
// deploy to production
} else {
echo 'Build failed, skipping deployment'
}
}
}
}In this example, the "Deploy" stage will only be executed if the "Build" stage completed successfully.
Try-Catch: You can use the try-catch block to handle exceptions and failures in your pipeline. For example:
try {
stage('Build') {
steps {
// build code
}
}
stage('Deploy') {
steps {
// deploy to production
}
}
} catch (Exception e) {
stage('Notify') {
steps {
// notify team of failure
}
}
}In this example, if the "Build" or "Deploy" stage fails, the pipeline will execute the "Notify" stage to notify the team of the failure.
These are just a few examples of how you can use conditional stages or steps in Jenkins Pipeline. You can also use plugins like the Conditional BuildStep Plugin or the Build Pipeline Plugin to achieve more complex conditional workflows.
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