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#!/bin/sh
# container-tools - Manage systemd-nspawn containers
# Copyright (C) 2014-2017 Daniel Baumann <daniel.baumann@open-infrastructure.net>
#
# 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 for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
set -e
Parameters ()
{
GETOPT_LONGOPTIONS="delay:,"
GETOPT_OPTIONS="d:,"
PARAMETERS="$(getopt --longoptions ${GETOPT_LONGOPTIONS} --name=${COMMAND} --options ${GETOPT_OPTIONS} --shell sh -- ${@})"
if [ "${?}" != "0" ]
then
echo "'${COMMAND}': getopt exit" >&2
exit 1
fi
eval set -- "${PARAMETERS}"
while true
do
case "${1}" in
-d|--delay)
DELAY="${2}"
shift 2
;;
--)
shift 1
break
;;
*)
echo "'${COMMAND}': getopt error" >&2
exit 1
;;
esac
done
}
Usage ()
{
echo "Usage: container ${COMMAND} [-d|--delay DELAY]" >&2
exit 1
}
Parameters "${@}"
DELAY="${DELAY:-1}"
HOST="$(hostname -f)"
# Pre hooks
for FILE in "${HOOKS}/pre-${COMMAND}".* "${HOOKS}/${NAME}.pre-${COMMAND}"
do
if [ -x "${FILE}" ]
then
"${FILE}"
fi
done
# Run
Top ()
{
HOME="$(tput cup 0 0)"
ED="$(tput ed)"
EL="$(tput el)"
printf '%s%s' "${HOME}" "${ED}"
while true
do
ROWS="$(tput lines)"
COLS="$(tput cols)"
CMD="${@}"
${SHELL:=sh} -c "${CMD}" | head -n ${ROWS} | while IFS= read LINE
do
printf '%-*.*s%s\n' ${COLS} ${COLS} "${LINE}" "${EL}"
done
printf '%s%s' "${ED}" "${HOME}"
sleep ${DELAY}
done
}
trap 'clear' EXIT HUP INT QUIT TERM
Top "container list && printf '%-59s %-19s\n' \" Host: ${HOST}\" \"\$(date +%Y-%m-%d\ %H:%M:%S)\""
# Post hooks
for FILE in "${HOOKS}/post-${COMMAND}".* "${HOOKS}/${NAME}.post-${COMMAND}"
do
if [ -x "${FILE}" ]
then
"${FILE}"
fi
done
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