Prune workflows based on changed files (#296)

Contributes to rapidsai/build-planning#94

Authors:
  - Kyle Edwards (https://github.com/KyleFromNVIDIA)

Approvers:
  - James Lamb (https://github.com/jameslamb)

URL: #296

.github/workflows/pr.yaml

@@ -12,6 +12,7 @@ concurrency:
 jobs:
   pr-builder:
     needs:
+      - changed-files
       - checks
       - conda-cpp-build
       - docs-build
@@ -25,6 +26,25 @@ jobs:
       - wheel-tests-distributed-ucxx
     secrets: inherit
     uses: rapidsai/shared-workflows/.github/workflows/[email protected]
+    if: always()
+    with:
+      needs: ${{ toJSON(needs) }}
+  changed-files:
+    secrets: inherit
+    uses: rapidsai/shared-workflows/.github/workflows/[email protected]
+    with:
+      files_yaml: |
+        test_cpp:
+          - '**'
+          - '!.pre-commit-config.yaml'
+          - '!README.md'
+          - '!docs/**'
+          - '!python/**'
+        test_python:
+          - '**'
+          - '!.pre-commit-config.yaml'
+          - '!README.md'
+          - '!docs/**'
   checks:
     secrets: inherit
     uses: rapidsai/shared-workflows/.github/workflows/[email protected]
@@ -47,23 +67,26 @@ jobs:
       container_image: "rapidsai/ci-conda:latest"
       run_script: "ci/build_docs.sh"
   conda-cpp-tests:
-    needs: conda-cpp-build
+    needs: [conda-cpp-build, changed-files]
     secrets: inherit
     uses: rapidsai/shared-workflows/.github/workflows/[email protected]
+    if: fromJSON(needs.changed-files.outputs.changed_file_groups).test_cpp
     with:
       build_type: pull-request
       container-options: "--cap-add CAP_SYS_PTRACE --shm-size=8g --ulimit=nofile=1000000:1000000"
   conda-python-tests:
-    needs: conda-cpp-build
+    needs: [conda-cpp-build, changed-files]
     secrets: inherit
     uses: rapidsai/shared-workflows/.github/workflows/[email protected]
+    if: fromJSON(needs.changed-files.outputs.changed_file_groups).test_python
     with:
       build_type: pull-request
       container-options: "--cap-add CAP_SYS_PTRACE --shm-size=8g --ulimit=nofile=1000000:1000000"
   conda-python-distributed-tests:
-    needs: conda-cpp-build
+    needs: [conda-cpp-build, changed-files]
     secrets: inherit
     uses: rapidsai/shared-workflows/.github/workflows/[email protected]
+    if: fromJSON(needs.changed-files.outputs.changed_file_groups).test_python
     with:
       build_type: pull-request
       script: "ci/test_python_distributed.sh"
@@ -83,9 +106,10 @@ jobs:
       build_type: pull-request
       script: ci/build_wheel_ucxx.sh
   wheel-tests-ucxx:
-    needs: wheel-build-ucxx
+    needs: [wheel-build-ucxx, changed-files]
     secrets: inherit
     uses: rapidsai/shared-workflows/.github/workflows/[email protected]
+    if: fromJSON(needs.changed-files.outputs.changed_file_groups).test_python
     with:
       build_type: pull-request
       container-options: "--cap-add CAP_SYS_PTRACE --shm-size=8g --ulimit=nofile=1000000:1000000"
@@ -98,9 +122,10 @@ jobs:
       build_type: pull-request
       script: ci/build_wheel_distributed_ucxx.sh
   wheel-tests-distributed-ucxx:
-    needs: [wheel-build-ucxx, wheel-build-distributed-ucxx]
+    needs: [wheel-build-ucxx, wheel-build-distributed-ucxx, changed-files]
     secrets: inherit
     uses: rapidsai/shared-workflows/.github/workflows/[email protected]
+    if: fromJSON(needs.changed-files.outputs.changed_file_groups).test_python
     with:
       build_type: pull-request
       container-options: "--cap-add CAP_SYS_PTRACE --shm-size=8g --ulimit=nofile=1000000:1000000"