maintenance-mode-toggle.yaml

name: Toggle Maintenance Mode in Lambda

on:
  workflow_dispatch:
    inputs:
      name:
        description: Who to greet
        default: Allen

permissions:
  id-token: write
  contents: read

jobs:
  toggle-maintenance-mode:
    name: Toggle maintenance mode
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v4

      - name: Configure aws credentials
        uses: aws-actions/configure-aws-credentials@v4
        with:
          role-to-assume: arn:aws:iam::154471991214:role/github_action
          aws-region: us-west-2

      - name: Toggle maintenance mode
        run: |
          MAINTENANCE_MODE=$(aws lambda get-function-configuration \
          --function-name docfunc-production-web \
          --region us-west-2 | jq -r '.Environment.Variables.MAINTENANCE_MODE')

          ENVIRONMENT=$(aws lambda get-function-configuration \
          --function-name docfunc-production-web \
          --region us-west-2 | jq -r '.Environment')

          if [[ ${MAINTENANCE_MODE} == 0 ]]; then
            NEW_ENVIRONMENT=$(echo $ENVIRONMENT | jq -r '.Variables.MAINTENANCE_MODE="1"|tostring')
            STATUS="ENABLE"
          elif [[ ${MAINTENANCE_MODE} == 1 ]]; then
            NEW_ENVIRONMENT=$(echo $ENVIRONMENT | jq -r '.Variables.MAINTENANCE_MODE="0"|tostring')
            STATUS="DISABLE"
          else
            echo 'MAINTENANCE_MODE must be 1 or 0'
            exit 1
          fi

          # https://github.com/aws/aws-cli/issues/2638
          aws lambda update-function-configuration \
          --function-name docfunc-production-web \
          --region us-west-2 \
          --environment $NEW_ENVIRONMENT | jq -r '.Environment.Variables.MAINTENANCE_MODE'

          echo "Maintenance mode is $STATUS"