kedaScaleTest.yml

name: KEDA Scale self hosted

on:
  workflow_dispatch:

env:
  AZ_STORAGE_ACCOUNT: aca2keda2scaler126
  AZ_QUEUE_NAME: gh-runner-scaler

jobs:
  #External Job to create and associate workflow with a unique QueueId on Azure queue to scale up KEDA
  scale-keda-queue-up:
    runs-on: ubuntu-latest 
    steps:
    - name: "Login via Azure CLI"
      uses: azure/login@v2.1.1
      with:
        creds: ${{ secrets.AZURE_CREDENTIALS }}

    - name: scale up self hosted
      id: scaleJob
      run: |
        OUTPUT=$(az storage message put --queue-name "${{ env.AZ_QUEUE_NAME }}" --content "${{ github.run_id }}" --account-name "${{ env.AZ_STORAGE_ACCOUNT }}")
        echo "::set-output name=scaleJobId::$(echo "$OUTPUT" | grep "id" | sed 's/^.*: //' | sed 's/,*$//g')"
        echo "::set-output name=scaleJobPop::$(echo "$OUTPUT" | grep "popReceipt" | sed 's/^.*: //' | sed 's/,*$//g')"
    outputs:
      scaleJobId: ${{ steps.scaleJob.outputs.scaleJobId }}
      scaleJobPop: ${{ steps.scaleJob.outputs.scaleJobPop }}

  #Subsequent Jobs runs-on [self-hosted]. Job1, Job2, JobN etc etc
  testRunner:
    needs: scale-keda-queue-up
    runs-on: [self-hosted]
    steps:
    - uses: actions/checkout@v4.1.7
    - name: Install Terraform
      uses: hashicorp/setup-terraform@v3.1.1
    - name: Display Terraform Version
      run: terraform --version
    - name: Display Azure-CLI Version
      run: az --version
    - name: Delay runner finish (2min)
      run: sleep 2m
    
    #Remove unique QueueId on Azure queue associated with workflow as final step to scale down KEDA
    - name: "Login via Azure CLI"
      uses: azure/login@v2.1.1
      with:
        creds: ${{ secrets.AZURE_CREDENTIALS }}

    - name: scale down self hosted
      run: |
        az storage message delete --id ${{needs.scale-keda-queue-up.outputs.scaleJobId}} --pop-receipt ${{needs.scale-keda-queue-up.outputs.scaleJobPop}} --queue-name "${{ env.AZ_QUEUE_NAME }}" --account-name "${{ env.AZ_STORAGE_ACCOUNT }}"