Demo Lambda Deployment using Jenkinsfile

cd ~
rm -rf sandbox
cd ~/solar-system
git fetch origin
git checkout main
git pull

stage('Lambda - S3 Upload & Deploy') {
    when { branch 'main' }
    steps {
        withAWS(credentials: 'aws-s3-ec2-lambda-creds', region: 'us-east-2') {
            sh '''
                echo "----- Before Modification -----"
                tail -5 app.js

                echo "----- Modifying app.js for Lambda -----"
                sed -i "/app\\.listen(3000/s/^\\/\\///" app.js
                sed -i "s|module.exports = app;|//module.exports = app;|g" app.js
                sed -i "s|//module.exports.handler|module.exports.handler|g" app.js

                echo "----- After Modification -----"
                tail -5 app.js
            '''

            sh '''
                echo "----- Creating deployment package -----"
                zip -qr solar-system-lambda-${BUILD_ID}.zip app* package* index.html node*
                ls -ltr solar-system-lambda-${BUILD_ID}.zip
            '''

            s3Upload(
                file: "solar-system-lambda-${BUILD_ID}.zip",
                bucket: 'solar-system-lambda-bucket'
            )
        }

        sh '''
            echo "----- Updating Lambda function code -----"
            aws lambda update-function-code \
                --function-name solar-system-function \
                --s3-bucket solar-system-lambda-bucket \
                --s3-key solar-system-lambda-${BUILD_ID}.zip
        '''
    }
}

git add Jenkinsfile index.html
git commit -m "Add Lambda deployment stage and bump frontend version"
git push origin main

// app.js (excerpt)
const mongoose = require('mongoose');
// ...
mongoose.connect(process.env.MONGO_URI, {
  user: process.env.MONGO_USERNAME,
  pass: process.env.MONGO_PASSWORD,
  useNewUrlParser: true,
  useUnifiedTopology: true
}, (err) => {
  if (err) {
    console.error("MongoDB Connection Error:", err);
  } else {
    console.log("MongoDB Connection Successful");
  }
});

pipeline {
    agent any

    environment {
        MONGO_URI          = credentials('mongo-db-uri')
        MONGO_USERNAME     = credentials('mongo-db-username')
        MONGO_PASSWORD     = credentials('mongo-db-password')
        SONAR_SCANNER_HOME = tool 'sonarqube-scanner-610'
        GITEA_TOKEN        = credentials('gitea-api-token')
    }

    stages {
        // … existing stages … 
        stage('Lambda - S3 Upload & Deploy') { … }
    }
}