delete-azure-functons.yml

name: Delete old Azure Functions

on:
  workflow_dispatch:
    inputs:
      group:
        description: 'Which group?'
        type: 'choice'
        options:
          - 'prisma-e2e-linux'
          - 'prisma-e2e-windows'
      search:
        description: 'String matching the function name, e.g. "-2024-01-"'
        required: true
        default: '-2024-01-'

jobs:
  cleanup:
    runs-on: 'ubuntu-latest'
    env:
      AZURE_SP_TENANT: ${{ vars.AZURE_SP_TENANT }}
      AZURE_SP_PASSWORD: ${{ secrets.AZURE_SP_PASSWORD }}
      AZURE_SP_NAME: ${{ vars.AZURE_SP_NAME }}
      AZ_DELETE_GROUP: ${{ inputs.group }}
      AZ_DELETE_SEARCH: ${{ inputs.search }}

    steps:
      - name: Azure CLI script
        uses: azure/cli@v2
        with:
          azcliversion: latest
          inlineScript: |
            # Debug
            # az --version
            # az account show

            echo "Logging in to Azure..."
            az login --service-principal -u "$AZURE_SP_NAME" -p "$AZURE_SP_PASSWORD" --tenant "$AZURE_SP_TENANT"

            # From https://gist.github.com/sj26/88e1c6584397bb7c13bd11108a579746
            # This is free and unencumbered software released into the public domain.
            # Anyone is free to copy, modify, publish, use, compile, sell, or distribute this software, either in source code form or as a compiled binary, for any purpose, commercial or non-commercial, and by any means.
            # In jurisdictions that recognize copyright laws, the author or authors of this software dedicate any and all copyright interest in the software to the public domain. We make this dedication for the benefit of the public at large and to the detriment of our heirs and successors. We intend this dedication to be an overt act of relinquishment in perpetuity of all present and future rights to this software under copyright law.
            # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
            # For more information, please refer to https://unlicense.org
            #
            # Retry a command up to a specific numer of times until it exits successfully,
            # with exponential back off.
            #
            #  $ retry 5 echo Hello
            #  Hello
            #
            #  $ retry 5 false
            # Retry 1/5 exited 1, retrying in 60 seconds...
            # Retry 2/5 exited 1, retrying in 120 seconds...
            # Retry 3/5 exited 1, retrying in 240 seconds...
            # Retry 4/5 exited 1, retrying in 480 seconds...
            # Retry 5/5 exited 1, no more retries left.
            #
            function retry {
              # This was added for logs
              printf "Running command: retry %s\n" "$*"

              local retries=$1
              shift

              local count=0
              until "$@"; do
                exit=$?
                wait=$((2 ** $count * 60))
                count=$(($count + 1))
                if [ $count -lt $retries ]; then
                  echo "Retry $count/$retries exited $exit, retrying in $wait seconds..."
                  sleep $wait
                else
                  echo "Retry $count/$retries exited $exit, no more retries left."
                  return $exit
                fi
              done
              return 0
            }

            function deleteAZResources {
              echo "Fetching Azure functions matching the group and search..."

              # List functions to be deleted
              FIDS=$(az functionapp list --resource-group $AZ_DELETE_GROUP --output tsv --query "[?contains(@.name, '$AZ_DELETE_SEARCH')==\`true\`].id")

              if [ "$FIDS" != "" ]; then
                echo "The following functions will be deleted: $FIDS"
                az functionapp delete --verbose --ids $FIDS
              else
                echo "No functions to delete"
              fi
              return 0
            }

            MAX_RETRIES=5

            retry $MAX_RETRIES deleteAZResources