Jenkinsfile

pipeline {
    agent any
    stages {
        stage("Deploy") {
            steps {
                withKubeConfig([credentialsId: '[CREDENTIAL_ID]', serverUrl: '[AUTHENTICATION_SERVER]']) {
                    script {
                        active = sh(returnStdout: true, script: "kubectl get vs [VIRTUAL_SERVICE] -o yaml | grep -B1 'weight: 100' | pcregrep -o1 'subset: (.*)'").trim()
                        echo "active: $active"

                        if (active == "blue") {
                            env.SUBSET = "green"
                        } else {
                            env.SUBSET = "blue"
                        }

                        echo "subset: ${env.SUBSET}"
                        echo "version: ${env.NEW_VERSION}"
                        sh(returnStdout: true, script: "SUBSET=${env.SUBSET} NEW_VERSION=${env.NEW_VERSION} envsubst < [DEPLOY_YAML_DIR]")
                    }
                }
            }
        }
    }
}