action.yml

# action.yml
name: install-faas-cli
description: 'Install faas-cli and put it on your path'
branding:
  icon: 'package'
  color: 'blue'
# This is pinned to the last major release, we have to bump it for each action version.
inputs:
  faas-cli-release:
    description: 'faas-cli release version to use in the actions.'
    required: false
    default: '0.16.23'
runs:
  using: "composite"
  steps:
    # We verify the version against a SHA **in the published action itself**, not in the GCS bucket.
    - run: |
        trap "popd" EXIT
        mkdir -p $HOME/.faas-cli
        pushd $HOME/.faas-cli
        bootstrap_version='0.16.23'
        expected_bootstrap_version_digest='1d369ee4037478825fec967367e3d14ee71ec95dae5fae7fcd61d6d6500b4179'
        curl -L https://github.com/openfaas/faas-cli/releases/download/${bootstrap_version}/faas-cli -o faas-cli
        shaBootstrap=$(sha256sum faas-cli | cut -d' ' -f1);

        if [[ $shaBootstrap != ${expected_bootstrap_version_digest} ]]; then exit 1; fi
        chmod +x faas-cli
        # If the bootstrap and specified `faas-cli` releases are the same, we're done.
        if [[ ${{ inputs.faas-cli-release }} == ${bootstrap_version} ]]; then exit 0; fi

        semver='^([0-9]+\.){0,2}(\*|[0-9]+)$'
        if [[ ${{ inputs.faas-cli-release }} =~ $semver ]]; then
          echo "INFO: Custom faas-cli Version ${{ inputs.faas-cli-release }}"
        else
          echo "ERROR: Unable to validate faas-cli version: '${{ inputs.faas-cli-release }}'"
          exit 1
        fi

        # Download custom faas-cli
        curl -L https://github.com/openfaas/faas-cli/releases/download/${{ inputs.faas-cli-release }}/faas-cli -o faas-cli_${{ inputs.faas-cli-release }}
        shaCustom=$(sha256sum faas-cli_${{ inputs.faas-cli-release }} | cut -d' ' -f1);
        curl -L https://github.com/openfaas/faas-cli/releases/download/${{ inputs.faas-cli-release }}/faas-cli.sha256 -o faas-cli.sha256
        expectedSha=$(cat faas-cli.sha256 | cut -d' ' -f1)
        # same hash means it is the same release
        if [[ $shaCustom == $expectedSha ]];
        then
          rm -f faas-cli faas-cli.sha256
          mv faas-cli_${{ inputs.faas-cli-release }} faas-cli
          chmod +x faas-cli
        else
          echo "ERROR: Wrong sha for faas-cli: '${{ inputs.faas-cli-release }}'"
          exit 1
        fi
      shell: bash
    - run: echo "$HOME/.faas-cli" >> $GITHUB_PATH
      shell: bash