Pipeline model - multiple pipelines with processing outside the pipeline sections

pipeline-model-multiple.groovy

// First pipeline declaration
pipeline {
    
    // Run on any node
    agent label: ""

    stages {
        stage('Section 1') {
            steps {
                    echo "Section 1 pipeline"
                    
                    // This will tie up a node. Look at executors while waiting.
                    input message: 'Wait for process', ok: 'Done waiting'                             
            }
        }
    }
}

// This does not tie up a node. Look at executors while waiting.
stage('Approval') {
    echo "Approval stage"
    input message: 'Approve next section', ok: 'Approve'    
}

// Second pipelne declaration
pipeline {
    
    // Run on any node
    agent label: ""

    stages {
        stage('Section 2') {
            steps {
                    echo "Pipeline section 2"                
            }
        }
    }
}