kops/hack/verify-gomod

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#!/usr/bin/env bash
# Copyright 2019 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.
set -o errexit
set -o nounset
set -o pipefail
export REPO_ROOT="${REPO_ROOT:-$(git rev-parse --show-toplevel)}"
cd "${REPO_ROOT}"
changes=$(git status --porcelain || true)
if [ -n "${changes}" ]; then
echo "ERROR: go modules are not up to date; please run: go mod tidy"
echo "changed files:"
printf "%s" "${changes}\n"
echo "git diff:"
git --no-pager diff
exit 1
fi