run_clang_tidy.sh

#!/bin/bash

set -e

echo "Generating compilation database..."
# The compilation database generate script doesn't support passing build options via CLI.
# Writing them into bazelrc
echo "build ${BAZEL_BUILD_OPTIONS}" >> .bazelrc

# bazel build need to be run to setup virtual includes, generating files which are consumed
# by clang-tidy
"${ENVOY_SRCDIR}/tools/gen_compilation_database.py" --run_bazel_build --include_headers

# It had to be in ENVOY_CI_DIR to run bazel to generate compile database, but clang-tidy-diff
# diff against current directory, moving them to ENVOY_SRCDIR.
mv ./compile_commands.json "${ENVOY_SRCDIR}/compile_commands.json"
cd "${ENVOY_SRCDIR}"

# Do not run incremental clang-tidy on check_format testdata files.
function exclude_testdata() {
  grep -v tools/testdata/check_format/
}

if [[ "${RUN_FULL_CLANG_TIDY}" == 1 ]]; then
  echo "Running full clang-tidy..."
  run-clang-tidy-7
elif [[ -z "${CIRCLE_PR_NUMBER}" && "$CIRCLE_BRANCH" == "master" ]]; then
  echo "On master branch, running clang-tidy-diff against previous commit..."
  git diff HEAD^ | exclude_testdata | clang-tidy-diff-7.py -p 1
else
  echo "Running clang-tidy-diff against master branch..."
  git fetch https://github.com/envoyproxy/envoy.git master
  git diff $(git merge-base HEAD FETCH_HEAD)..HEAD | exclude_testdata | \
    clang-tidy-diff-7.py -p 1
fi