ci.yaml

name: CI
concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: ${{ github.event_name == 'pull_request' }}
on:
  pull_request: {}
  push:
    branches:
      - main

jobs:
  get-changed-files:
    name: Get Changed Files
    runs-on: ubuntu-20.04
    outputs:
      changed-files: ${{ steps.changed-files.outputs.all_changed_and_modified_files }}
      control-plane-changed: ${{ steps.control-plane-changed.outputs.any_modified }}
      dataplane-changed: ${{ steps.dataplane-changed.outputs.any_modified }}
      workflow-changed: ${{ steps.workflow-changed.outputs.any_modified }}
    steps:
    - uses: actions/checkout@93ea575cb5d8a053eaa0ac8fa3b40d7e05a33cc8
      with:
        fetch-depth: 0
    - name: Get list of all changes
      uses: tj-actions/changed-files@716b1e13042866565e00e85fd4ec490e186c4a2f
      id: changed-files
    - name: Check if any files related to the building of the control plane image have changed (see the Dockerfiles)
      uses: tj-actions/changed-files@716b1e13042866565e00e85fd4ec490e186c4a2f
      id: control-plane-changed
      with:
        files: |
          Dockerfile
          go.mod
          go.sum
          main.go
          controllers/
          LICENSE
    - name: Check if any files related to the building of the dataplane image have changed (see the Dockerfiles)
      uses: tj-actions/changed-files@716b1e13042866565e00e85fd4ec490e186c4a2f
      id: dataplane-changed
      with:
        files: |
          dataplane/Dockerfile
          dataplane/go.mod
          dataplane/go.sum
          dataplane/main.go
          dataplane/xdp.c
          dataplane/Makefile
          dataplane/LICENCE
    - name: Check if any of the workflow files have changed
      uses: tj-actions/changed-files@716b1e13042866565e00e85fd4ec490e186c4a2f
      id: workflow-changed
      with:
        files: |
          .github/workflows/
    - name: List all changed files
      run: |
        for file in ${{ steps.changed-files.outputs.all_changed_files }}; do
          echo "$file"
        done

  pr-docker-build:
    name: PR Docker build
    needs: [ get-changed-files ]
    if: >-
      github.event_name == 'pull_request' 
      && (
        needs.get-changed-files.outputs.control-plane-changed == 'true'
        || needs.get-changed-files.outputs.dataplane-changed == 'true'
        || needs.get-changed-files.outputs.workflow-changed == 'true'
      )
    runs-on: ubuntu-22.04
    steps:
    - uses: actions/checkout@93ea575cb5d8a053eaa0ac8fa3b40d7e05a33cc8
    - name: Set up Docker Buildx
      uses: docker/setup-buildx-action@c74574e6c82eeedc46366be1b0d287eff9085eb6
      with:
        install: true
    - name: Docker build - Control Plane
      uses: docker/build-push-action@c56af957549030174b10d6867f20e78cfd7debc5
      with:
        context: .
        cache-from: type=gha
        cache-to: type=gha,mode=max
        tags: kubernetes-sigs/blixt-controlplane:pr-${{ github.event.pull_request.number }}-${{ github.event.pull_request.head.sha }}
        outputs: type=docker,dest=/tmp/blixt-controlplane.tar
    - name: Upload Image Artifact - Control Plane
      uses: actions/upload-artifact@3cea5372237819ed00197afe530f5a7ea3e805c8
      with:
        name: blixt-controlplane
        path: /tmp/blixt-controlplane.tar
    - name: Docker build - Dataplane
      uses: docker/build-push-action@c56af957549030174b10d6867f20e78cfd7debc5
      with:
        context: dataplane
        cache-from: type=gha
        cache-to: type=gha,mode=max
        tags: kubernetes-sigs/blixt-dataplane:pr-${{ github.event.pull_request.number }}-${{ github.event.pull_request.head.sha }}
        outputs: type=docker,dest=/tmp/blixt-dataplane.tar
    - name: Upload Image Artifact - Dataplane
      uses: actions/upload-artifact@3cea5372237819ed00197afe530f5a7ea3e805c8
      with:
        name: blixt-dataplane
        path: /tmp/blixt-dataplane.tar

  main-docker-build:
    name: Main branch Docker build
    needs: [ get-changed-files ]
    if: >-
      github.event_name == 'push'
      && (
        needs.get-changed-files.outputs.control-plane-changed == 'true'
        || needs.get-changed-files.outputs.dataplane-changed == 'true'
        || needs.get-changed-files.outputs.workflow-changed == 'true'
      )
    runs-on: ubuntu-22.04
    steps:
    - uses: actions/checkout@93ea575cb5d8a053eaa0ac8fa3b40d7e05a33cc8
    - name: Set up Docker Buildx
      uses: docker/setup-buildx-action@c74574e6c82eeedc46366be1b0d287eff9085eb6
      with:
        install: true
    - name: Login to GitHub Container Registry
      uses: docker/login-action@v2
      with:
        registry: ghcr.io
        username: ${{ github.actor }}
        password: ${{ secrets.GITHUB_TOKEN }}
    - name: Docker build - Control Plane
      uses: docker/build-push-action@c56af957549030174b10d6867f20e78cfd7debc5
      with:
        context: .
        push: false # TODO: https://github.com/kubernetes-sigs/blixt/issues/106
        cache-from: type=gha
        cache-to: type=gha,mode=max
        tags: ghcr.io/kubernetes-sigs/blixt-controlplane:latest
    - name: Docker build - Data Plane
      uses: docker/build-push-action@c56af957549030174b10d6867f20e78cfd7debc5
      with:
        context: dataplane
        push: false # TODO: https://github.com/kubernetes-sigs/blixt/issues/106
        cache-from: type=gha
        cache-to: type=gha,mode=max
        tags: ghcr.io/kubernetes-sigs/blixt-dataplane:latest