publish-target-allocator.yaml

name: "Publish target allocator"

on:
  push:
    paths:
      - 'cmd/otel-allocator/**'
      - '.github/workflows/publish-target-allocator.yaml'
    branches:
      - main
    tags:
      - 'v*'
  workflow_dispatch:

env:
  PLATFORMS: linux/amd64,linux/arm64,linux/s390x,linux/ppc64le

jobs:
  publish:
    runs-on: ubuntu-22.04

    steps:
      - uses: actions/checkout@v4

      - uses: actions/setup-go@v5
        with:
          go-version: '~1.22.4'

      # TODO: We're currently not using this. Should we?
      - name: Read version
        run: |
          echo "VERSION=$(git describe --tags | sed 's/^v//')" >> $GITHUB_ENV
          echo "VERSION_DATE=$(date -u +'%Y-%m-%dT%H:%M:%SZ')" >> $GITHUB_ENV

      - name: Build the binary for each supported architecture
        run: |
          for platform in $(echo $PLATFORMS | tr "," "\n"); do
            arch=${platform#*/}
            echo "Building target allocator for $arch"
            make targetallocator ARCH=$arch
          done

      - name: Docker meta
        id: meta
        uses: docker/metadata-action@v5
        with:
          images: |
            otel/target-allocator
            ghcr.io/open-telemetry/opentelemetry-operator/target-allocator
          tags: |
            type=semver,pattern={{version}}
            type=semver,pattern={{major}}.{{minor}}
            type=semver,pattern={{raw}}
            type=ref,event=branch

      - name: Set up QEMU
        uses: docker/setup-qemu-action@v3

      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v3

      - name: Cache Docker layers
        uses: actions/cache@v4
        with:
          path: /tmp/.buildx-cache
          key: ${{ runner.os }}-buildx-${{ github.sha }}
          restore-keys: |
            ${{ runner.os }}-buildx-

      - name: Log into Docker.io
        uses: docker/login-action@v3
        if: ${{ github.event_name == 'push' }}
        with:
          username: ${{ secrets.DOCKER_USERNAME }}
          password: ${{ secrets.DOCKER_PASSWORD }}

      - name: Login to GitHub Package Registry
        uses: docker/login-action@v3
        if: ${{ github.event_name == 'push' }}
        with:
          registry: ghcr.io
          username: ${{ github.repository_owner }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Build and push
        uses: docker/build-push-action@v6
        with:
          context: cmd/otel-allocator
          platforms: ${{ env.PLATFORMS }}
          push: true
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}
          cache-from: type=local,src=/tmp/.buildx-cache
          cache-to: type=local,dest=/tmp/.buildx-cache