[dpdk-dev] [PATCH] ci: hook to Github Actions

[David Marchand <david.marchand@redhat.com>]

With the recent changes in terms of free access to the Travis CI, let's
offer an alternative with Github Actions.
Running jobs on ARM is not supported unless using external runners, so
this commit only adds builds for x86_64 and cross compiling for i386 and
aarch64.

Differences with the Travis CI integration:
- All jobs generate documentation.
  This is not that heavy and the default timeout on actions is never
  reached so no reason splitting this into multiple jobs.
- Error logs are not dumped to the console when something goes wrong.
  Instead, they are gathered in a "catch-all" step and attached as
  artifacts.
- A cache entry is stored once and for all, but if no cache is found you
  can inherit from the default branch cache. The cache is 5GB large, for
  the whole git repository.
- The maximum retention of logs and artifacts is 3 months.
- /home/runner is world writable, so a workaround has been added for
  starting dpdk processes.

Signed-off-by: David Marchand <david.marchand@redhat.com>
---
 .ci/linux-build.sh          |  4 +-
 .github/workflows/build.yml | 98 +++++++++++++++++++++++++++++++++++++
 MAINTAINERS                 |  1 +
 3 files changed, 102 insertions(+), 1 deletion(-)
 create mode 100644 .github/workflows/build.yml

diff --git a/.ci/linux-build.sh b/.ci/linux-build.sh
index d079801d78..a2a0e5bf42 100755
--- a/.ci/linux-build.sh
+++ b/.ci/linux-build.sh
@@ -12,7 +12,9 @@ on_error() {
         fi
     done
 }
-trap on_error EXIT
+# We capture the error logs as artifacts in Github Actions, no need to dump
+# them via a EXIT handler.
+[ -n "$GITHUB_WORKFLOW" ] || trap on_error EXIT
 
 install_libabigail() {
     version=$1
diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
new file mode 100644
index 0000000000..e0a8f1ed52
--- /dev/null
+++ b/.github/workflows/build.yml
@@ -0,0 +1,98 @@
+name: build
+
+on: push
+
+defaults:
+  run:
+    shell: bash --noprofile --norc -exo pipefail {0}
+
+jobs:
+  build:
+    name: ${{ join(matrix.config.*, '-') }}
+    runs-on: ${{ matrix.config.os }}
+    env:
+      PKGS: |
+        ccache libnuma-dev python3-setuptools python3-wheel python3-pip \
+        ninja-build libbsd-dev libpcap-dev libibverbs-dev libcrypto++-dev \
+        libfdt-dev libjansson-dev doxygen graphviz python3-sphinx \
+        python3-sphinx-rtd-theme
+      CC: ccache ${{ matrix.config.compiler }}
+      JOBNAME: ${{ join(matrix.config.*, '-') }}
+
+    strategy:
+      fail-fast: false
+      matrix:
+        config:
+          - os: ubuntu-18.04
+            compiler: gcc
+            library: static
+          - os: ubuntu-18.04
+            compiler: gcc
+            library: shared
+          - os: ubuntu-18.04
+            compiler: clang
+            library: static
+          - os: ubuntu-18.04
+            compiler: clang
+            library: shared
+          - os: ubuntu-18.04
+            compiler: gcc
+            library: static
+            cross: i386
+          - os: ubuntu-18.04
+            compiler: gcc
+            library: static
+            cross: aarch64
+          - os: ubuntu-18.04
+            compiler: gcc
+            library: shared
+            cross: aarch64
+
+    steps:
+    - uses: actions/checkout@v2
+    - uses: actions/cache@v2
+      with:
+        path: ~/.ccache
+        key: ${{ env.JOBNAME }}-${{ github.ref }}
+        restore-keys: |
+          ${{ env.JOBNAME }}-refs/heads/main
+    - name: Install packages
+      run: sudo apt install -y ${{ env.PKGS }}
+    - name: Install i386 cross compiling packages
+      if: matrix.config.cross == 'i386'
+      run: sudo apt install -y gcc-multilib
+    - name: Install aarch64 cross compiling packages
+      if: matrix.config.cross == 'aarch64'
+      run: |
+        sudo apt install -y gcc-aarch64-linux-gnu libc6-dev-arm64-cross \
+          pkg-config-aarch64-linux-gnu
+    - name: Prepare environment
+      run: |
+         .ci/linux-setup.sh
+         # Workaround on $HOME permissions as EAL checks them for plugin loading
+         chmod o-w $HOME
+    - name: Build and test
+      run: |
+        export DEF_LIB=${{ matrix.config.library }}
+        export BUILD_DOCS=1
+        case '${{ matrix.config.cross }}' in
+        'i386')
+            export BUILD_32BIT=1
+        ;;
+        'aarch64')
+            export AARCH64=1
+        ;;
+        '')
+            export RUN_TESTS=1
+        ;;
+        esac
+        .ci/linux-build.sh
+    - name: Upload logs on failure
+      if: failure()
+      uses: actions/upload-artifact@v2
+      with:
+        name: meson-logs-${{ env.JOBNAME }}
+        path: |
+          build/meson-logs/testlog.txt
+          build/.ninja_log
+          build/meson-logs/meson-log.txt
diff --git a/MAINTAINERS b/MAINTAINERS
index 214515060a..95b61085b7 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -109,6 +109,7 @@ Public CI
 M: Aaron Conole <aconole@redhat.com>
 M: Michael Santana <maicolgabriel@hotmail.com>
 F: .travis.yml
+F: .github/workflows/build.yml
 F: .ci/
 
 ABI Policy & Versioning
-- 
2.23.0