[build] log rbe output to an artifact

Author: titusfortner

.github/workflows/bazel.yml

@@ -83,6 +83,7 @@ jobs:
       TWINE_PASSWORD: ${{ secrets.TWINE_PASSWORD }}
       TWINE_USERNAME: ${{ secrets.TWINE_USERNAME }}
       NODE_AUTH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+      BAZEL_LOG_FILE: bazel-logs/bzl_${{ github.run_id }}.log
       SE_AVOID_STATS: true
     steps:
       - name: Checkout source tree

.github/workflows/ci-rbe.yml

@@ -26,4 +26,6 @@ jobs:
       name: All RBE tests
       caching: false
       ruby-version: jruby-9.4.12.0
+      upload-name: bazel-logs
+      upload-path: bazel-logs
       run: ./scripts/github-actions/ci-build.sh

scripts/github-actions/ci-build.sh

@@ -4,12 +4,25 @@ set -eufo pipefail
 # We want to see what's going on
 set -x
 
-# Now run the tests. The engflow build uses pinned browsers
-# so this should be fine
-# shellcheck disable=SC2046
-bazel test --config=remote-ci --build_tests_only \
-  --keep_going --flaky_test_attempts=2 \
-  //... -- $(cat .skipped-tests | tr '\n' ' ')
+run_bazel_tests() {
+  # shellcheck disable=SC2046
+  bazel test --config=remote-ci --build_tests_only \
+    --keep_going --flaky_test_attempts=2 \
+    //... -- $(cat .skipped-tests | tr '\n' ' ')
+}
+
+# Prepare log directory if BAZEL_LOG_FILE is set and run tests
+if [ -n "${BAZEL_LOG_FILE:-}" ]; then
+  LOG_DIR=$(dirname "$BAZEL_LOG_FILE")
+  if mkdir -p "$LOG_DIR"; then
+    run_bazel_tests 2>&1 | tee "$BAZEL_LOG_FILE"
+  else
+    echo "Error: Failed to create directory for BAZEL_LOG_FILE" >&2
+    exit 1
+  fi
+else
+  run_bazel_tests
+fi
 
 # Build the packages we want to ship to users
 bazel build --config=remote-ci --build_tag_filters=release-artifact //...