ci, Makefile: add make rule to check bazel prepare (#38818)

close #38817

Makefile

@@ -14,7 +14,7 @@
 
 include Makefile.common
 
-.PHONY: all clean test server dev benchkv benchraw check checklist parser tidy ddltest build_br build_lightning build_lightning-ctl build_dumpling ut bazel_build bazel_prepare bazel_test check-file-perm bazel_lint
+.PHONY: all clean test server dev benchkv benchraw check checklist parser tidy ddltest build_br build_lightning build_lightning-ctl build_dumpling ut bazel_build bazel_prepare bazel_test check-file-perm check-bazel-prepare bazel_lint
 
 default: server buildsucc
 
@@ -31,7 +31,7 @@ dev: checklist check explaintest gogenerate br_unit_test test_part_parser_dev ut
 # Install the check tools.
 check-setup:tools/bin/revive
 
-check: parser_yacc check-parallel lint tidy testSuite errdoc
+check: parser_yacc check-parallel lint tidy testSuite errdoc check-bazel-prepare
 
 fmt:
 	@echo "gofmt (simplify)"
@@ -393,6 +393,10 @@ bazel_prepare:
 	bazel run //:gazelle
 	bazel run //:gazelle -- update-repos -from_file=go.mod -to_macro DEPS.bzl%go_deps  -build_file_proto_mode=disable
 
+check-bazel-prepare:
+	@echo "make bazel_prepare"
+	./tools/check/check-bazel-prepare.sh
+
 bazel_test: failpoint-enable bazel_ci_prepare
 	bazel $(BAZEL_GLOBAL_CONFIG) test $(BAZEL_CMD_CONFIG) \
 		-- //... -//cmd/... -//tests/graceshutdown/... \

tools/check/check-bazel-prepare.sh

@@ -0,0 +1,31 @@
+#!/usr/bin/env bash
+# Copyright 2022 PingCAP, Inc.
+#
+# 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.
+#
+# set is used to set the environment variables.
+#  -e: exit immediately when a command returning a non-zero exit code.
+#  -u: treat unset variables as an error.
+#  -o pipefail: sets the exit code of a pipeline to that of the rightmost command to exit with a non-zero status,
+#       or to zero if all commands of the pipeline exit successfully.
+set -euo pipefail
+
+before_checksum=`find . -type f \( -name *.bazel -o -name *.bzl \) -exec md5sum {} \;| sort -k 2`
+make bazel_prepare
+after_checksum=`find . -type f \( -name *.bazel -o -name *.bzl \) -exec md5sum {} \;| sort -k 2`
+if [ "$before_checksum" != "$after_checksum" ]
+then
+  echo "Please run \`make bazel_prepare\` to update \`.bazel\` files"
+  diff <(echo "$before_checksum") <(echo "$after_checksum")
+  exit 1
+fi