[Code health] Include what you use cleanup, part 5 #934


	name: include-what-you-use

	on:
	push:
	branches: [ main ]
	pull_request:
	branches: [ main ]

	jobs:
	iwyu:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v4
	with:
	submodules: 'recursive'

	- name: setup dependencies
	run: \|
	sudo apt update -y
	sudo apt install -y --no-install-recommends --no-install-suggests \
	build-essential \
	iwyu \
	cmake \
	ninja-build \
	libssl-dev \
	libcurl4-openssl-dev \
	libprotobuf-dev \
	protobuf-compiler \
	libgmock-dev \
	libgtest-dev \
	libbenchmark-dev

	- name: Prepare CMake
	run: \|
	TOPDIR=`pwd`
	mkdir build && cd build
	CC="clang" CXX="clang++" cmake \
	-DCMAKE_CXX_STANDARD=14 \
	-DWITH_STL=CXX14 \
	-DCMAKE_CXX_INCLUDE_WHAT_YOU_USE="include-what-you-use;-w;-Xiwyu;--mapping_file=${TOPDIR}/.iwyu.imp;" \
	-DBUILD_TESTING=ON \
	-DBUILD_W3CTRACECONTEXT_TEST=ON \
	-DWITH_OTLP_GRPC=OFF \
	-DWITH_OTLP_HTTP=ON \
	-DWITH_OTLP_FILE=ON \
	-DWITH_OTLP_HTTP_COMPRESSION=ON \
	-DWITH_ZIPKIN=ON \
	-DWITH_PROMETHEUS=OFF \
	..

	- name: iwyu_tool
	run: \|
	cd build
	make -k 2>&1 \| tee -a iwyu.log

	- uses: actions/upload-artifact@v4
	if: success() \|\| failure()
	with:
	name: Logs (include-what-you-use)
	path: ./build/*.log

	- name: count warnings
	run: \|
	cd build
	export WARNING_COUNT=`grep -c "include-what-you-use reported diagnostics:" iwyu.log`
	echo "include-what-you-use reported ${WARNING_COUNT} warning(s)"
	# Acceptable limit, to decrease over time down to 0
	export WARNING_LIMIT=10
	# FAIL the build if WARNING_COUNT > WARNING_LIMIT
	exit $(( WARNING_COUNT > WARNING_LIMIT ? 1 : 0 ))

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