Setting up GitHub Actions to Deploy JAVA code on Elastic Beanstalk

See the previous post for details on how to understand the basics of GitHub actions and to set it up

The below is the workflow yml that will build and deploy a maven war file to Elastic Beanstalk. If you’ve questions on how to use this, and why certain things are being used, fire away in the comments.

GitHub action for Java (using maven)

name: <name>
on:
  push:
    branches:
      - <branch>
  workflow_dispatch:
concurrency: <name>
jobs:
  <name>:
    name: <name>
    timeout-minutes: <time to wait before timeout>
    runs-on: ubuntu-latest
    env:
      CORRETTO_URL: https://corretto.aws/downloads/latest/amazon-corretto-8-x64-linux-jdk.tar.gz
    steps:
      - name: Checkout the code
        uses: actions/checkout@v2
        with:
          fetch-depth: 0
      - name: Cache jdk binary
        uses: actions/cache@v2
        with:
          path: ${{ runner.temp }}/jdk
          key: ${{ runner.os }}-jdk-8
          restore-keys: ${{ runner.os }}-jdk
      - name: retrieve latest corretto 8 jdk
        run: |
          test -d ${{ runner.temp }}/jdk || mkdir ${{ runner.temp }}/jdk
          test -f ${{ runner.temp }}/jdk/corretto.tar.gz || ( wget -qP ${{ runner.temp }}/jdk $ {{ env.CORRETTO_URL }} )
      - name: Set up JDK 8 from file
        uses: actions/setup-java@v2
        with:
          distribution: 'jdkfile'
          jdkFile: ${{ runner.temp }}/jdk/corretto.tar.gz
          java-version: '8'
          architecture: x64
          cache: "maven"
      - name: Enable caching
        uses: actions/cache@v2
        with:
          path: ~/.m2/repository
          key: ${{ runner.os }}-m2-${{ hashFiles('**/pom.xml') }}
          restore-keys: |
            ${{ runner.os }}-m2
      - name: Create the installer after running the tests
        run: mvn clean install
      - name: Get the current time
        id: time
        uses: nanzm/get-time-action@v1.1
        with:
          timeZone: 8
          format: 'YYYY-MM-DD-HH-mm-ss'
      - name: Configure AWS credentials
        uses: aws-actions/configure-aws-credentials@v1
        with:
          aws-access-key-id: ${{ secrets.AWS_ACCESS_KEY_ID }}
          aws-secret-access-key: ${{ secrets.AWS_SECRET_ACCESS_KEY }}
          aws-region: us-east-1
      - name: Upload the war file to AWS
        env:
          TIME: "${{ steps.time.outputs.time }}"
        run: |
          cp ./<project>/target/<filename>.war ./<project>/target/$TIME.war
          aws s3 cp ./<project>/target/$TIME.war s3://<s3 bucket name>/
          aws elasticbeanstalk create-application-version --application-name <app name> --version-label $TIME --source-bundle S3Bucket="<s3 bucket name>",S3Key="$TIME.war" --auto-create-application
          aws elasticbeanstalk update-environment --environment-name <env name> --version-label $TIME