subsurface/.github/workflows/linux-snap.yml

name: Linux Snap

on:
  push:
    branches:
    - master
  pull_request:
    branches:
    - master

jobs:
  Snap:
    runs-on: ubuntu-latest

    timeout-minutes: 60
    steps:
    - name: Check out code
      uses: actions/checkout@v3
      with:
        # Needed for version determination to work
        fetch-depth: 0

    - name: atomically create or retrieve the build number
      id: version_number
      if: github.event_name == 'push'
      run: |
        cd .. # check out parallel to subsurface sources
        url="https://subsurface:${{ secrets.NIGHTLY_BUILDS }}@github.com/subsurface/nightly-builds"
        # the clone followed by the pointless push should verify that the password is stored in the config
        # that way the script doesn't need the password
        git clone -b main https://github.com/subsurface/nightly-builds
        cd nightly-builds
        git remote set-url origin "$url"
        git push origin main
        cd ..
        bash -x subsurface/scripts/get-or-create-build-nr.sh ${{ github.sha }}
        cp nightly-builds/latest-subsurface-buildnumber subsurface
        echo "CICD-release" > subsurface/latest-subsurface-buildnumber-extension
        version=$(bash subsurface/scripts/get-version)
        echo "version=$version" >> $GITHUB_OUTPUT

    - name: store dummy version and build number for pull request
      if: github.event_name == 'pull_request'
      run: |
        echo "100" > latest-subsurface-buildnumber
        echo "CICD-pull-request" > latest-subsurface-buildnumber-extension

    - name: Set up LXD
      uses: canonical/setup-lxd@main

    - name: Set up CCache
      id: setup-ccache
      run: |
        sudo apt-get install ccache
        mkdir -p ${HOME}/.ccache
        ccache --max-size=2G
        /snap/bin/lxc profile device add default ccache disk source=${HOME}/.ccache/ path=/root/.ccache

        # Patch snapcraft.yaml to enable ccache
        patch -p1 < .github/workflows/linux-snap.patch

        # Find common base between master and HEAD to use as cache key.
        git -c protocol.version=2 fetch --no-tags --prune --progress --no-recurse-submodules origin master
        echo "key=$( git merge-base origin/master ${{ github.sha }} )" >> $GITHUB_OUTPUT

    - name: CCache
      uses: actions/cache@v3
      with:
        key: ccache-${{ runner.os }}-${{ steps.setup-ccache.outputs.key }}
        restore-keys: |
          ccache-${{ runner.os }}-
        path: ~/.ccache/**

    - name: Build and verify the snap
      uses: canonical/actions/build-snap@release
      id: build-snap
      with:
        setup-lxd: false

    - name: Clear CCache stats
      run: ccache --show-stats --zero-stats

    - name: Upload the snap
      if: github.event_name == 'push'
      uses: actions/upload-artifact@v2
      with:
        name: ${{ steps.build-snap.outputs.snap-name }}
        path: ${{ steps.build-snap.outputs.snap-path }}
        if-no-files-found: error