mirror of
https://github.com/outbackdingo/kubernetes.git
synced 2026-01-27 10:19:35 +00:00
79 lines
2.4 KiB
Bash
Executable File
79 lines
2.4 KiB
Bash
Executable File
#!/usr/bin/env bash
|
|
|
|
# Copyright 2025 The Kubernetes Authors.
|
|
#
|
|
# Licensed under the Apache License, Version 2.0 (the "License");
|
|
# you may not use this file except in compliance with the License.
|
|
# You may obtain a copy of the License at
|
|
#
|
|
# http://www.apache.org/licenses/LICENSE-2.0
|
|
#
|
|
# Unless required by applicable law or agreed to in writing, software
|
|
# distributed under the License is distributed on an "AS IS" BASIS,
|
|
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
# See the License for the specific language governing permissions and
|
|
# limitations under the License.
|
|
|
|
# This script verifies if the golang linker is eliminating dead code in
|
|
# various components we care about, such as kube-apiserver, kubelet and others
|
|
# Usage: `hack/verify-deadcode-elimination.sh`.
|
|
|
|
set -o errexit
|
|
set -o nounset
|
|
set -o pipefail
|
|
|
|
KUBE_ROOT=$(dirname "${BASH_SOURCE[0]}")/..
|
|
source "${KUBE_ROOT}/hack/lib/init.sh"
|
|
|
|
kube::golang::setup_env
|
|
|
|
# Ensure that we find the binaries we build before anything else.
|
|
export GOBIN="${KUBE_OUTPUT_BIN}"
|
|
PATH="${GOBIN}:${PATH}"
|
|
|
|
# Install whydeadcode
|
|
go install github.com/aarzilli/whydeadcode@latest
|
|
|
|
# Prefer full path for running zeitgeist
|
|
WHYDEADCODE_BIN="$(which whydeadcode)"
|
|
|
|
pushd "${KUBE_ROOT}"
|
|
|
|
# Define an array of binaries to check
|
|
BINARIES=("kube-apiserver" "kubelet" "kube-controller-manager" "kube-scheduler" "kube-proxy")
|
|
FAILED=false
|
|
FAILED_BINARIES=()
|
|
|
|
for binary in "${BINARIES[@]}"; do
|
|
echo "Processing ${binary} ..."
|
|
output=$(KUBE_VERBOSE=4 GOLDFLAGS=-dumpdep make "${binary}" 2>&1 | grep "\->" | ${WHYDEADCODE_BIN} 2>&1)
|
|
if [[ -n "$output" ]]; then
|
|
echo "golang linker is not eliminating dead code in ${binary}, please check the trace output below:"
|
|
echo "(NOTE: that there may be false positives, but the first trace should be a real issue)"
|
|
echo "$output"
|
|
FAILED=true
|
|
FAILED_BINARIES+=("${binary}")
|
|
fi
|
|
|
|
# Find the binary and print its size
|
|
echo "Finding ${binary} binary and checking its size:"
|
|
binary_paths=$(find _output -type f -name "${binary}" | sort)
|
|
if [[ -n "${binary_paths}" ]]; then
|
|
# shellcheck disable=SC2086
|
|
ls -altrh ${binary_paths}
|
|
else
|
|
echo "Binary ${binary} not found in _output directory"
|
|
fi
|
|
echo ""
|
|
done
|
|
|
|
popd > /dev/null || true
|
|
|
|
if [[ "$FAILED" == "true" ]]; then
|
|
echo "Dead code elimination check failed for the following binaries:"
|
|
for failed_binary in "${FAILED_BINARIES[@]}"; do
|
|
echo " - ${failed_binary}"
|
|
done
|
|
exit 1
|
|
fi
|