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#!/usr/bin/env bash
# Copyright 2024 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
function usage {
local script="$(basename $0)"
echo >&2 "Usage: ${script} <maximum go directive>
This script should be run at the root of a module.
Compare the go directive in the local working copy's go.mod
to the specified maximum version it can be. Versions provided
here are of the form 1.x.y, without the 'go' prefix.
Examples:
${script} 1.20
${script} 1.21.6
"
exit 1
}
max="$1"
# If max is empty, print usage and error
if [[ -z "${max}" ]]; then
usage;
fi
# Don't specify the version with the go prefix, just 1.x.y will do.
if [[ ! "${max}" =~ ^[0-9]\.[0-9]+(\.[0-9]+)?$ ]]; then
usage
fi
current=$(awk '/^go / {print $2;}' go.mod)
if [[ -z "${current}" ]]; then
echo >&2 "FAIL: could not get value of go directive from go.mod"
exit 1
fi
if ! printf '%s\n' "${current}" "${max}" | sort --check=silent --version-sort; then
echo >&2 "FAIL: current Go directive ${current} is greater than ${max}"
exit 1
fi
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