sdc-cn-comments

#!/bin/bash

# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
# file, You can obtain one at http://mozilla.org/MPL/2.0/.

# Copyright (c) 2015, Brian Bennett <bahamat@digitalelf.net>

cn=$1; shift
action=$1; shift

set -o errexit

get_server_uuid () {
    if (( ${#cn} == 36 )); then
        echo "$cn"
    else
        sdc-cnapi "/servers?hostname=$cn" -f | json -Ha uuid
        if (( $? > 0 )); then
            usage ; exit 1
        fi
    fi
}

do_delete_comment () {
    sdc-cnapi "/servers/$uuid" -f -X POST -d '{"comments":""}' >/dev/null
}

do_set_comment() {
    if [[ -z $1 ]]; then
        echo "Cannot set empty comment. Use delete instead."
        usage; exit 1
    fi
    json=$(json -o json-0 -e "this.comments=\"$*\"" <<< '{}')
    sdc-cnapi "/servers/$uuid" -f -X POST -d "$json" >/dev/null
    do_get_comment
}

do_get_comment () {
    printf "%s: " "$cn"
    sdc-cnapi "/servers/$uuid" -f | json -Ha comments
}


usage () {
    printf "Usage:\n"
    printf "\t%s get CN\n" "${0/.*\/}"
    printf "\t%s set CN comment\n" "${0/.*\/}"
    printf "\t%s delete CN\n" "${0/.*\/}"
    printf "\nNote: comment should not be quoted.\n"
}

if [[ -z $cn ]]; then
    echo "No CN provided"
    usage ; exit 1
fi

uuid=$(get_server_uuid)

if [[ -z $uuid ]]; then
    printf "Invalid CN: %s\n" "$cn"
    usage ; exit 1
fi

case "${action:=get}" in
    del|delete) do_delete_comment;;
    set) do_set_comment "$*";;
    get) do_get_comment;;
    *) usage; exit 1;;
esac