feature-branch-deployment.yaml

name: Feature Branch Deployment Workflow
on:
  workflow_call:
    inputs:
      # Mandatory inputs
      githubRef:
        required: true
        type: string
      gitSha:
        required: true
        type: string
    secrets:
      AWS_ACCOUNT_ID:
        required: true
      GH_AWS_ACCESS_KEY_ID:
        required: true
      GH_AWS_SECRET_ACCESS_KEY:
        required: true
jobs:
  feature-branch-deploy:
    runs-on: ubuntu-latest
    if: startsWith(${{ inputs.githubRef }}, 'refs/heads/feat/') == true
    steps:
      - uses: actions/checkout@v2
      - name: Get Pull Request Metadata
        id: pr
        run: |-
          export PULL_REQUEST_NUMBER=$(gh pr view --json number -q .number || echo "")
          export PULL_REQUEST_CLOSED=$(gh pr view --json closed -q .closed || echo "")
          echo "pull_request_number=$PULL_REQUEST_NUMBER" >> $GITHUB_OUTPUT
          echo "pull_request_closed=$PULL_REQUEST_CLOSED" >> $GITHUB_OUTPUT
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
      - id: synth
        name: Synth cdk8s manifests
        if: (steps.pr.outputs.pull_request_number) && (steps.pr.outputs.pull_request_closed == 'false')
        run: |-
          cd k8s
          yarn install --frozen-lockfile

          # Get repo name (by removing owner/organization)
          export DEPLOY_TO_FEATURE_BRANCH=true
          export RELEASE_NAME=${REPOSITORY#*/}-pr-${{ steps.pr.outputs.pull_request_number }}

          # Export RELEASE_NAME as an output
          echo "RELEASE_NAME=$RELEASE_NAME" >> $GITHUB_OUTPUT

          yarn build
        env:
          PR_NUMBER: ${{ steps.pr.outputs.pull_request_number }}
          GIT_SHA: ${{ inputs.gitSha }}
          REPOSITORY: ${{ github.repository }}
          AWS_ACCOUNT_ID: ${{ secrets.AWS_ACCOUNT_ID }}
      - name: Deploy
        if: steps.synth.outcome == 'success'
        run: |-
          aws eks --region us-east-1 update-kubeconfig --name production --role-arn arn:aws:iam::${AWS_ACCOUNT_ID}:role/kubectl
          # Get repo name from synth step
          RELEASE_NAME=${{ steps.synth.outputs.RELEASE_NAME }}
          # Deploy
          kubectl apply -f k8s/dist/ -l app.kubernetes.io/component=certificate
          kubectl apply -f k8s/dist/ --prune -l app.kubernetes.io/part-of=$RELEASE_NAME
        env:
          AWS_ACCOUNT_ID: ${{ secrets.AWS_ACCOUNT_ID }}
          AWS_ACCESS_KEY_ID: ${{ secrets.GH_AWS_ACCESS_KEY_ID }}
          AWS_SECRET_ACCESS_KEY: ${{ secrets.GH_AWS_SECRET_ACCESS_KEY }}
      - name: Find feature branch complete announcement if exists
        uses: peter-evans/find-comment@v2
        id: find-announcement
        with:
          issue-number: ${{ steps.pr.outputs.pull_request_number }}
          body-includes: Deployment preview for
          token: ${{ secrets.GITHUB_TOKEN }}
      - name: Announce successful feature branch deployment
        uses: peter-evans/create-or-update-comment@v2
        with:
          comment-id: ${{ steps.find-announcement.outputs.comment-id }}
          issue-number: ${{ steps.pr.outputs.pull_request_number }}
          edit-mode: replace
          body: |-
            Deployment preview for commit `${{ github.sha }}` ready at:
            [pr-${{ steps.pr.outputs.pull_request_number }}.pennlabs.org](https://pr-${{ steps.pr.outputs.pull_request_number }}.pennlabs.org)