Trigger CI workflows based on assigned label. (p4lang#4348)

* Trigger workflows based on assigned label.

* Conditional requirements.txt

.github/workflows/ci-ubuntu-18-nightly.yml

@@ -3,41 +3,40 @@ name: "test-p4c-ubuntu-18.04"
 on:
   schedule:
     # Every day on midnight UTC
-    - cron: '0 0 * * *'
-
-# Cancel any preceding run on the pull request.
-concurrency:
-  group: test-${{ github.event.pull_request.number || github.ref }}
-  cancel-in-progress: ${{ github.ref != 'refs/heads/main' }}
+    - cron: "0 0 * * *"
+  pull_request:
+    branches: [main]
 
 jobs:
   # Build with gcc and test p4c on Ubuntu 18.04.
   test-ubuntu18:
+    # Only run on pull requests with the "run-ubuntu18" label.
+    if: contains(github.event.pull_request.labels.*.name, 'run-ubuntu18')
     strategy:
       fail-fast: false
     runs-on: ubuntu-latest
     env:
       CTEST_PARALLEL_LEVEL: 4
     steps:
-    - uses: actions/checkout@v3
-      with:
-        submodules: recursive
-        fetch-depth: 0
+      - uses: actions/checkout@v3
+        with:
+          submodules: recursive
+          fetch-depth: 0
 
-    - name: ccache
-      uses: hendrikmuhs/ccache-action@v1
-      with:
-        key: test-ubuntu-18.04-gcc
-        max-size: 1000M
+      - name: ccache
+        uses: hendrikmuhs/ccache-action@v1
+        with:
+          key: test-ubuntu-18.04-gcc
+          max-size: 1000M
 
-    - name: Build (Ubuntu 18.04, GCC)
-      run: |
-        docker build -t p4c --build-arg BASE_IMAGE=ubuntu:18.04 --build-arg IMAGE_TYPE=test \
-        --build-arg ENABLE_TEST_TOOLS=OFF .
-        ./tools/export_ccache.sh
+      - name: Build (Ubuntu 18.04, GCC)
+        run: |
+          docker build -t p4c --build-arg BASE_IMAGE=ubuntu:18.04 --build-arg IMAGE_TYPE=test \
+          --build-arg ENABLE_TEST_TOOLS=OFF .
+          ./tools/export_ccache.sh
 
-      # run with sudo (...) --privileged
-      # this is needed to create network namespaces for the ebpf tests.
-    - name: Run tests (Ubuntu 18.04)
-      run: |
-        sudo -E docker run --privileged -w /p4c/build -e $CTEST_PARALLEL_LEVEL p4c ctest --output-on-failure --schedule-random
+        # run with sudo (...) --privileged
+        # this is needed to create network namespaces for the ebpf tests.
+      - name: Run tests (Ubuntu 18.04)
+        run: |
+          sudo -E docker run --privileged -w /p4c/build -e $CTEST_PARALLEL_LEVEL p4c ctest --output-on-failure --schedule-random

.github/workflows/ci-ubuntu-20-sanitizer-nightly.yml

@@ -3,16 +3,16 @@ name: "test-p4c-ubuntu-20.04-sanitizers"
 on:
   schedule:
     # Every day on midnight UTC
-    - cron: '0 0 * * *'
-
-# Cancel any preceding run on the pull request.
-concurrency:
-  group: test-${{ github.event.pull_request.number || github.ref }}
-  cancel-in-progress: ${{ github.ref != 'refs/heads/main' }}
+    - cron: "0 0 * * *"
+  pull_request:
+    branches:
+      - main
 
 jobs:
   # Build with clang and test p4c on Ubuntu 20.04.
   test-ubuntu20-clang-sanitizers:
+    # Only run on pull requests with the "run-sanitizer" label.
+    if: contains(github.event.pull_request.labels.*.name, 'run-sanitizer')
     strategy:
       fail-fast: false
     runs-on: ubuntu-20.04
@@ -25,21 +25,21 @@ jobs:
       UBSAN_OPTIONS: print_stacktrace=1
       ASAN_OPTIONS: print_stacktrace=1:detect_leaks=0
     steps:
-    - uses: actions/checkout@v3
-      with:
-        submodules: recursive
+      - uses: actions/checkout@v3
+        with:
+          submodules: recursive
 
-    - name: ccache
-      uses: hendrikmuhs/ccache-action@v1
-      with:
-        key: test-${{ runner.os }}-clang
-        max-size: 1000M
+      - name: ccache
+        uses: hendrikmuhs/ccache-action@v1
+        with:
+          key: test-${{ runner.os }}-clang
+          max-size: 1000M
 
-    - name: Build (Ubuntu 20.04, Clang, Sanitizers)
-      run: |
-        tools/ci-build.sh
+      - name: Build (Ubuntu 20.04, Clang, Sanitizers)
+        run: |
+          tools/ci-build.sh
 
-    - name: Run tests (Ubuntu 20.04)
-      # Need to use sudo for the eBPF kernel tests.
-      run: sudo -E ctest --output-on-failure --schedule-random
-      working-directory: ./build
+      - name: Run tests (Ubuntu 20.04)
+        # Need to use sudo for the eBPF kernel tests.
+        run: sudo -E ctest --output-on-failure --schedule-random
+        working-directory: ./build

.github/workflows/ci-validation-nightly.yml

@@ -3,39 +3,39 @@ name: "validate-p4c"
 on:
   schedule:
     # Every day on midnight UTC
-    - cron: '0 0 * * *'
-
-# Cancel any preceding run on the pull request.
-concurrency:
-  group: validation-${{ github.event.pull_request.number || github.ref }}
-  cancel-in-progress: ${{ github.ref != 'refs/heads/main' }}
+    - cron: "0 0 * * *"
+  pull_request:
+    branches:
+      - main
 
 jobs:
   # We run validation in parallel with the normal tests.
   # Validation ensures that P4C compiles P4-16 programs correctly.
   # We only test the front end and some mid end passes for now.
   validate:
+    # Only run on pull requests with the "run-validation" label.
+    if: contains(github.event.pull_request.labels.*.name, 'run-validation')
     env:
       CTEST_PARALLEL_LEVEL: 4
       IMAGE_TYPE: test
       VALIDATION: ON
     runs-on: ubuntu-20.04
     steps:
-    - uses: actions/checkout@v3
-      with:
-        submodules: recursive
+      - uses: actions/checkout@v3
+        with:
+          submodules: recursive
 
-    - name: ccache
-      uses: hendrikmuhs/ccache-action@v1
-      with:
-        key: validation-${{ runner.os }}
-        max-size: 1000M
+      - name: ccache
+        uses: hendrikmuhs/ccache-action@v1
+        with:
+          key: validation-${{ runner.os }}
+          max-size: 1000M
 
-    - name: Build (Ubuntu 20.04)
-      run: |
-        tools/ci-build.sh
+      - name: Build (Ubuntu 20.04)
+        run: |
+          tools/ci-build.sh
 
-    - name: Validate
-      run: |
+      - name: Validate
+        run: |
           ctest  -R toz3-validate-p4c --output-on-failure --schedule-random
-      working-directory: ./build
+        working-directory: ./build

requirements.txt

@@ -7,6 +7,10 @@ scapy==2.4.5
 clang-format==15.0.6
 black==22.3.0
 isort==5.10.0
-protobuf==3.20.1
-googleapis-common-protos==1.50.0
-grpcio==1.51.1
+protobuf==3.20.2; python_version > '3.6'
+grpcio==1.51.1; python_version > '3.6'
+googleapis-common-protos==1.53.0; python_version > '3.6'
+# Ubuntu 18.04 uses Python 3.6, which is not supported by recent versions of Protobuf.
+protobuf==3.19.2; python_version <= '3.6'
+googleapis-common-protos==1.53.0; python_version <= '3.6'
+grpcio==1.48.2; python_version <= '3.6'