action.yml

# SPDX-FileCopyrightText: © Vegard IT GmbH (https://vegardit.com) and contributors
# SPDX-FileContributor: Sebastian Thomschke, Vegard IT GmbH
# SPDX-License-Identifier: Apache-2.0
#
# https://docs.github.com/en/actions/creating-actions/creating-a-composite-action
name: Configure fast APT mirror
description: Configures a fast APT mirror in Ubuntu runners, e.g. in case azure.archive.ubuntu.com is slow or unreachable.
author: Vegard IT GmbH (https://vegardit.com)
branding:
  color: blue
  icon: settings

inputs:
  healthchecks:     { default:    "20", description: "Number of mirrors from the mirrors list to check for availability and up-to-dateness." }
  speedtests:       { default:    "10", description: "Maximum number of healthy mirrors to test for speed." }
  parallel:         { default:     "2", description: "Number of parallel speed tests. May result in incorrect results because of competing connections but finds a suitable mirror faster." }
  sample-size:      { default:  "1024", description: "Number of kilobytes to download during the speed from each mirror." }
  sample-time:      { default:     "3", description: "Maximum number of seconds within the sample download from a mirror must finish." }
  exclude-current:  { default: "false", description: "Don't include the current APT mirror in the speed tests." }
  country:          { default:      "", description: "The country code to use for selecting mirrors. NOTE: Only applies to Ubuntu based distros. Defaults to http://mirrors.ubuntu.com/mirrors.txt" }

  repo-name:   { default: "vegardit/fast-apt-mirror.sh", description: "Repository containing the fast-apt-mirror.sh script" }
  repo-branch: { default: "v1", description: "Version (i.e. github branch) of the fast-apt-mirror.sh script to use" }

runs:
  using: "composite"
  steps:
    - name: "Linux: Configure fast APT mirror"
      if: runner.os == 'Linux'
      shell: bash
      run: |
        echo "::group::Linux: Configure fast APT mirror"
        set -euo pipefail

        # Step to get country code if not provided
        if [[ -z "${{ inputs.country }}" ]]; then
          echo "No country code provided, retrieving from public IP..."
          IP_ADDRESS=$(curl -s http://checkip.amazonaws.com)
          COUNTRY_CODE=$(curl -s http://ip-api.com/json/$IP_ADDRESS | jq -r '.countryCode')
          echo "Detected country code: $COUNTRY_CODE"
        else
          COUNTRY_CODE="${{ inputs.country }}"
        fi

        echo 'APT::Acquire::Retries "3";' | sudo tee /etc/apt/apt.conf.d/80-acquire-retries

        if [[ "${{ env.ACT }}" != "true" ]]; then
          # Workaround to avoid sporadic connectivity issues "Could not connect to azure.archive.ubuntu.com:80"
          # see https://github.com/actions/runner-images/issues/675
          # see https://github.com/actions/runner-images/issues/704
          if (set -x; curl -sSfL --retry 3 --max-time 6 https://raw.githubusercontent.com/${{ inputs.repo-name }}/${{ inputs.repo-branch }}/fast-apt-mirror.sh -o $HOME/fast-apt-mirror.sh); then
            bash $HOME/fast-apt-mirror.sh find --apply --verbose \
              --healthchecks ${{ inputs.healthchecks }} \
              --ignore-sync-state \
              --speedtests   ${{ inputs.speedtests }} \
              --parallel     ${{ inputs.parallel }} \
              --sample-size  ${{ inputs.sample-size }} \
              --sample-time  ${{ inputs.sample-time }} \
              --country      "$COUNTRY_CODE" \
              ${{ inputs.exclude-current == 'true' && '--exclude-current' || '' }}
          fi || exit 0 # don't fail action if APT mirror detection failed for whatever reason
        fi

        # refresh pkg cache if it does not exist or is older than 60min.
        # avoid potential 404 see https://github.com/actions/runner-images/issues/592
        if [[ ! -e /var/lib/apt/lists/partial ]] || [[ $(( $(date +%s) - $(sudo date +%s -r /var/lib/apt/lists/partial) )) -gt 3600 ]]; then
          (set -x; sudo apt-get update)
        fi
        echo "::endgroup::"