From a1f2787897a81c375a4de28482b5eb649851800a Mon Sep 17 00:00:00 2001
From: Benjamin Elder <bentheelder@google.com>
Date: Sun, 28 Feb 2021 14:15:57 -0800
Subject: [PATCH] automate removing bazel in hack/update-bazel.sh

---
 hack/update-bazel.sh | 113 ++++++++-----------------------------------
 1 file changed, 20 insertions(+), 93 deletions(-)

diff --git a/hack/update-bazel.sh b/hack/update-bazel.sh
index 7475d4c3ef2..9e7eb55b48e 100755
--- a/hack/update-bazel.sh
+++ b/hack/update-bazel.sh
@@ -18,99 +18,26 @@ set -o nounset
 set -o pipefail
 
 KUBE_ROOT=$(dirname "${BASH_SOURCE[0]}")/..
-source "${KUBE_ROOT}/hack/lib/init.sh"
 
-# Ensure that we find the binaries we build before anything else.
-export GOBIN="${KUBE_OUTPUT_BINPATH}"
-PATH="${GOBIN}:${PATH}"
+# delete all bazel related files
+find "${KUBE_ROOT}" \( \
+  -name BUILD \
+  -o -name BUILD.bazel \
+  -o -name '*.bzl' \
+\) \
+  -delete
 
-pushd "${KUBE_ROOT}/hack/tools" >/dev/null
-  GO111MODULE=on go install github.com/bazelbuild/bazel-gazelle/cmd/gazelle
-  GO111MODULE=on go install github.com/bazelbuild/buildtools/buildozer
-  GO111MODULE=on go install k8s.io/repo-infra/cmd/kazel
-popd >/dev/null
+# remove additional one-off bazel related files
+# NOTE: most of these will be pairs of symlinked location in "${KUBE_ROOT}/"
+# and the actual location in "${KUBE_ROOT}/build/root/"
+rm -f \
+  "${KUBE_ROOT}/build/root/BUILD.root" \
+  "${KUBE_ROOT}/WORKSPACE" \
+  "${KUBE_ROOT}/build/root/WORKSPACE" \
+  "${KUBE_ROOT}/.bazelrc" \
+  "${KUBE_ROOT}/build/root/.bazelrc" \
+  "${KUBE_ROOT}/.bazelversion" \
+  "${KUBE_ROOT}/build/root/.bazelversion" \
+  "${KUBE_ROOT}/.kazelcfg.json" \
+  "${KUBE_ROOT}/build/root/.kazelcfg.json"
 
-# Find all of the staging repos.
-while IFS='' read -r repo; do staging_repos+=("${repo}"); done <\
-  <(cd "${KUBE_ROOT}/staging/src" && find k8s.io -mindepth 1 -maxdepth 1 -type d | LC_ALL=C LANG=C sort)
-
-# Save the staging repos into a Starlark list that can be used by Bazel rules.
-(
-  cat "${KUBE_ROOT}/hack/boilerplate/boilerplate.generatebzl.txt"
-  echo "# This file is autogenerated by hack/update-bazel.sh."
-  # avoid getting caught by the boilerplate checker
-  rev <<<".TIDE TON OD #"
-  echo
-  echo "staging_repos = ["
-  for repo in "${staging_repos[@]}"; do
-    echo "    \"${repo}\","
-  done
-  echo "]"
-) >"${KUBE_ROOT}/staging/repos_generated.bzl"
-
-# Ensure there's a BUILD file at vendor/ so the all-srcs rule in the root
-# BUILD.bazel file is isolated from changes under vendor/.
-touch "${KUBE_ROOT}/vendor/BUILD"
-# Ensure there's a BUILD file at the root of each staging repo. This prevents
-# the package-srcs glob in vendor/BUILD from following the symlinks
-# from vendor/k8s.io into staging. Following these symlinks through
-# vendor results in files being excluded from the kubernetes-src tarball
-# generated by Bazel.
-for repo in "${staging_repos[@]}"; do
-  touch "${KUBE_ROOT}/staging/src/${repo}/BUILD"
-done
-
-# Warning: Please be careful when ignoring these pkg-config errors.
-# As gazelle doesn't support pkg-config, if we suppress these errors here, we actually need to modify the script below to handle it manually.
-# For instance, in the case of `libseccomp`, we set the link option `-lseccomp` to make it work properly.
-KNOWN_PKG_CONFIG_ERRORS=(
-  "vendor/github.com/seccomp/libseccomp-golang/seccomp(_internal)?.go: pkg-config not supported: #cgo pkg-config: libseccomp"
-  "vendor/github.com/google/cadvisor/nvm/machine_libipmctl.go: pkg-config not supported: #cgo pkg-config: libipmctl"
-)
-
-# Run gazelle to update Go rules in BUILD files.
-# filter out known pkg-config error (see buildozer workaround below)
-# NOTE: the `|| exit "${PIPESTATUS[0]}"` is to ignore grep errors
-# while preserving the exit code of gazelle
-gazelle fix \
-    -external=vendored \
-    -mode=fix \
-    -repo_root "${KUBE_ROOT}" \
-    "${KUBE_ROOT}" \
-    2>&1 | grep -Ev "$(kube::util::join \| "${KNOWN_PKG_CONFIG_ERRORS[@]}")" || (exit "${PIPESTATUS[0]}")
-
-# Run kazel to update the pkg-srcs and all-srcs rules as well as handle
-# Kubernetes code generators.
-kazel
-
-# make targets in vendor manual
-# buildozer exits 3 when no changes are made ¯\_(ツ)_/¯
-# https://github.com/bazelbuild/buildtools/tree/master/buildozer#error-code
-buildozer -quiet 'add tags manual' '//vendor/...:%go_binary' '//vendor/...:%go_test' && ret=$? || ret=$?
-if [[ $ret != 0 && $ret != 3 ]]; then
-  exit 1
-fi
-
-# mark all ./test/integration/* targets as integration
-# see comment above re: buildozer exit codes
-buildozer -quiet 'add tags integration' '//test/integration/...:%go_test' && ret=$? || ret=$?
-if [[ $ret != 0 && $ret != 3 ]]; then
-  exit 1
-fi
-
-# restrict ./vendor/github.com/prometheus/* targets visibility
-# see comment above re: buildozer exit codes
-buildozer -quiet 'set visibility //build/visible_to:vendor_githubcom_prometheus_CONSUMERS' '//vendor/github.com/prometheus/...:go_default_library' && ret=$? || ret=$?
-if [[ $ret != 0 && $ret != 3 ]]; then
-  exit 1
-fi
-
-# we need to set this because gazelle doesn't support pkg-config, which would set this link option
-# see comment above re: buildozer exit codes
-buildozer -quiet 'set clinkopts select({"@io_bazel_rules_go//go/platform:linux":["-lseccomp",],"//conditions:default":[],})' //vendor/github.com/seccomp/libseccomp-golang:go_default_library && ret=$? || ret=$?
-if [[ $ret != 0 && $ret != 3 ]]; then
-  exit 1
-fi
-
-# Avoid bazel stuff in tools/ directory
-rm hack/tools/BUILD