OCP4: check upgrade channel for a particular release

ocp4-chk-upgrade-channel

#!/bin/bash
# ocp4-chk-upgrade-channel v0.0.3 last mod 2020/01/23
# Copyright 2020 Ryan Sawhill Aroha <[email protected]>
#
#    This program is free software: you can redistribute it and/or modify
#    it under the terms of the GNU General Public License as published by
#    the Free Software Foundation, either version 3 of the License, or
#    (at your option) any later version.
#
#    This program is distributed in the hope that it will be useful,
#    but WITHOUT ANY WARRANTY; without even the implied warranty of
#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
#    General Public License <gnu.org/licenses/gpl.html> for more details.

# Colors
[[ ${NO_COLORS} ]] || declare -A c=([z]='\033[0;0m' [Q]='\033[0;0m\033[1;1m' [r]='\033[0;31m' [R]='\033[1;31m' [g]='\033[0;32m' [G]='\033[1;32m' [y]='\033[0;33m' [Y]='\033[1;33m' [b]='\033[0;34m' [B]='\033[1;34m' [m]='\033[0;35m' [M]='\033[1;35m' [c]='\033[0;36m' [C]='\033[1;36m')

print() {
	local echo_opts=
	while [[ $1 =~ ^- ]]; do
		echo_opts+="$1 "
		shift
	done
	echo -e $echo_opts "$@"
}

halp() {
	rc=0
	if [[ $@ ]]; then
		print "${c[R]}✘ ERROR: $@${c[z]}\n"
		rc=1
	fi
	cat <<-EOF
		usage: ${0##*/} [-v|--verbose] OCP_VERSION
		Figure out the highest upgrade channel in which OCP_VERSION can be found
		Ordering: "stable", "fast", "candidate", "prerelease"
		OCP_VERSION should be something like "4.1.15" or "4.2.2"
		
		Requires:
		  • curl
		  • jq (https://github.com/stedolan/jq/releases)
	EOF
	exit $rc
}

verbose=0

until [[ -z $1 ]]; do
	case $1 in
		-v|--verbose)
			verbose=1; shift;;
		4.*)
			version=$1
			[[ $version =~ ^4\.[0-9]+\.[0-9]+$ ]] && major=${1%.*} minor=${1##*.} || halp "Invalid OCP_VERSION specified"
			shift;;
		-h|--help) halp;;
		*) halp "Invalid arguments"
	esac
done

url=https://mirror.openshift.com/pub/openshift-v4/clients/ocp/$version

validate_url() {
	local errs
	errs=$(curl --fail -o /dev/null -LSsI $1 2>&1) && return
	print "$indent${c[R]}✘ Failed to get $1${c[z]}${c[r]}\n$indent  $errs${c[z]}"
	return 2
}

jq_help=$(jq -h)
if [[ $? -gt 0 || ! $jq_help =~ "jq - commandline JSON processor" ]]; then
	print "${c[R]}✘ Unexpected error running 'jq --help' command -- need jq from https://github.com/stedolan/jq/releases${c[z]}"
	exit 1
fi

# Make sure release exists
validate_url $url/release.txt || exit

print "${c[Q]}RH OCP v$major release $minor${c[z]}"

# Check upgrade channel
for channel in stable fast candidate prerelease x; do
	verboseOutput=$(curl -sSH "Accept: application/json" "https://api.openshift.com/api/upgrades_info/v1/graph?channel=${channel}-${major}&arch=amd64" | jq -Ce --arg version $version '.nodes[] | select(.version == $version)')
	(( $? == 0 )) && break
done

rc=0

case $channel in
	x)
		rc=1 verbose=0 channelMsg="${c[R]} ☢️  ☣️  U N K N O W N  ☣️  ☢️ \n${c[r]}WARNING: Could not find release in ANY upgrade channel!" ;;
	stable)
		rc=0 channelMsg="${c[G]}✔✔✔ $channel ✔✔✔" ;;
	fast)
		rc=3 channelMsg="${c[Y]}⚠️ ⚠️ $channel ⚠️ ⚠️ \n${c[m]}WARNING: Release has not (yet) been tagged into the stable channel" ;;
	candidate|prerelease)
		rc=1 channelMsg="${c[R]}⛔ ⛔ $channel ⛔ ⛔ \n${c[m]}WARNING: Release has not (yet) been tagged into the stable channel" ;;
esac

print "${c[Q]}Highest upgrade channel: $channelMsg${c[z]}"
(( verbose == 1 )) && echo "$verboseOutput"
exit $rc

Hey @nccurry
Since you're the only one that forked this, I just wanted to take a sec to let you know the original script has been completely overhauled. Ref: https://gist.github.com/ryran/072409b1b7efd5018683a8c45e019652#gistcomment-3657193