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| 1 | +#!/bin/bash |
| 2 | + |
| 3 | +# Copyright 2022 The Kubernetes Authors. |
| 4 | +# |
| 5 | +# Licensed under the Apache License, Version 2.0 (the "License"); |
| 6 | +# you may not use this file except in compliance with the License. |
| 7 | +# You may obtain a copy of the License at |
| 8 | +# |
| 9 | +# http://www.apache.org/licenses/LICENSE-2.0 |
| 10 | +# |
| 11 | +# Unless required by applicable law or agreed to in writing, software |
| 12 | +# distributed under the License is distributed on an "AS IS" BASIS, |
| 13 | +# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 14 | +# See the License for the specific language governing permissions and |
| 15 | +# limitations under the License. |
| 16 | + |
| 17 | +# Some useful colors. |
| 18 | +if [[ -z "${color_start-}" ]]; then |
| 19 | + declare -r color_start="\033[" |
| 20 | + declare -r color_red="${color_start}0;31m" |
| 21 | + declare -r color_yellow="${color_start}0;33m" |
| 22 | + declare -r color_green="${color_start}0;32m" |
| 23 | + declare -r color_norm="${color_start}0m" |
| 24 | +fi |
| 25 | + |
| 26 | +# Returns the server version as MMmmpp, with MM as the major |
| 27 | +# component, mm the minor component, and pp as the patch |
| 28 | +# revision. e.g. 0.7.1 is echoed as 701, and 1.0.11 would be |
| 29 | +# 10011. (This makes for easy integer comparison in bash.) |
| 30 | +function kube_server_version() { |
| 31 | + local server_version |
| 32 | + local major |
| 33 | + local minor |
| 34 | + local patch |
| 35 | + |
| 36 | + # This sed expression is the POSIX BRE to match strings like: |
| 37 | + # Server Version: &version.Info{Major:"0", Minor:"7+", GitVersion:"v0.7.0-dirty", GitCommit:"ad44234f7152e9c66bc2853575445c7071335e57", GitTreeState:"dirty"} |
| 38 | + # and capture the GitVersion portion (which has the patch level) |
| 39 | + server_version=$(${KUBECTL} --match-server-version=false version | grep "Server Version:") |
| 40 | + read major minor patch < <( |
| 41 | + echo ${server_version} | \ |
| 42 | + sed "s/.*GitVersion:\"v\([0-9]\{1,\}\)\.\([0-9]\{1,\}\)\.\([0-9]\{1,\}\).*/\1 \2 \3/") |
| 43 | + printf "%02d%02d%02d" ${major} ${minor} ${patch} | sed 's/^0*//' |
| 44 | +} |
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