228 lines
5.4 KiB
Bash
Executable File
228 lines
5.4 KiB
Bash
Executable File
#!/bin/sh
|
||
|
||
# This script will check if any APT upgrade is available and
|
||
# will prepare the host in order to apply upgrade with another script
|
||
# 1. Create a temp file
|
||
# 2. Disable SGE queue
|
||
|
||
# This script can be call by a cronjob (eg. weekly)
|
||
# Another script should try to apply upgrades also with cron (eg. hourly)
|
||
|
||
# Vars {{{
|
||
readonly PROGNAME=$(basename "${0}")
|
||
readonly PROGDIR=$(readlink -m $(dirname "${0}"))
|
||
readonly ARGS="${*}"
|
||
readonly NBARGS="${#}"
|
||
[ -z "${DEBUG}" ] && DEBUG=1
|
||
## Export DEBUG for sub-script
|
||
export DEBUG
|
||
|
||
readonly APT_TMP_FILE="/tmp/.apt.upgrade"
|
||
|
||
## Colors
|
||
readonly PURPLE='\033[1;35m'
|
||
readonly RED='\033[0;31m'
|
||
readonly RESET='\033[0m'
|
||
readonly COLOR_DEBUG="${PURPLE}"
|
||
# }}}
|
||
|
||
usage() { # {{{
|
||
|
||
cat <<- EOF
|
||
usage: $PROGNAME
|
||
|
||
Verify if any APT package upgrade is available and
|
||
try to prepare the host by :
|
||
* Disabling SGE queue
|
||
|
||
EXAMPLES :
|
||
- Verify upgrade and prepare the current host
|
||
${PROGNAME}
|
||
|
||
OPTIONS :
|
||
-d,--debug
|
||
Enable debug messages.
|
||
|
||
-h,--help
|
||
Print this help message.
|
||
EOF
|
||
|
||
}
|
||
# }}}
|
||
debug_message() { # {{{
|
||
|
||
local_message="${1}"
|
||
|
||
## Print message if DEBUG is enable (=0)
|
||
[ "${DEBUG}" -eq "0" ] && printf '\e[1;35m%-6b\e[m\n' "DEBUG − ${PROGNAME} : ${local_message}"
|
||
|
||
return 0
|
||
}
|
||
# }}}
|
||
is_apt_upgrade_absent() { # {{{
|
||
|
||
## Count the number of upgradable packages and substract 1 for the header
|
||
local_apt_upgrade_number="$(apt list --upgradable 2>/dev/null \
|
||
| wc -l \
|
||
| awk '{print $1-1}')"
|
||
|
||
case "${local_apt_upgrade_number}" in
|
||
0 ) ## No available upgrade
|
||
return_apt_upgrade_absent="0"
|
||
;;
|
||
* ) ## Upgrade seems available
|
||
return_apt_upgrade_absent="1"
|
||
;;
|
||
esac
|
||
|
||
## Simple debug message to valid current variable
|
||
debug_message "is_apt_upgrade_absent − \
|
||
APT upgrade available for this system: ${RED}${local_apt_upgrade_number:=/dev/null}${COLOR_DEBUG}."
|
||
|
||
return "${return_apt_upgrade_absent}"
|
||
|
||
}
|
||
# }}}
|
||
is_apt_upgrade_present() { # {{{
|
||
|
||
## Count the number of upgradable packages and substract 1 for the header
|
||
local_apt_upgrade_number="$(apt list --upgradable 2>/dev/null \
|
||
| wc -l \
|
||
| awk '{print $1-1}')"
|
||
|
||
case "${local_apt_upgrade_number}" in
|
||
0 ) ## No available upgrade
|
||
return_apt_upgrade_present="1"
|
||
;;
|
||
* ) ## Upgrade seems available
|
||
return_apt_upgrade_present="0"
|
||
;;
|
||
esac
|
||
|
||
## Simple debug message to valid current variable
|
||
debug_message "is_apt_upgrade_present − \
|
||
APT upgrade available for this system: ${RED}${local_apt_upgrade_number:=/dev/null}${COLOR_DEBUG}."
|
||
|
||
return "${return_apt_upgrade_present}"
|
||
|
||
}
|
||
# }}}
|
||
is_pending_job_empty() { # {{{
|
||
|
||
## Count the number of pending jobs (qw state only)
|
||
## Excluding root's jobs
|
||
local_pending_jobs="$(qstat -s p -u '*' \
|
||
| grep --count --perl-regexp -- "(?=.*?\bqw\b)((?!root).)*$")"
|
||
|
||
case "${local_pending_jobs}" in
|
||
0 ) ## Pending jobs list is empty
|
||
return_pending_job_empty="0"
|
||
;;
|
||
* ) ## Some jobs are waiting
|
||
return_pending_job_empty="1"
|
||
;;
|
||
esac
|
||
|
||
## Simple debug message to valid current variable
|
||
debug_message "is_pending_job_empty − \
|
||
Pending jobs for the compute cluster: ${RED}${local_pending_jobs:=/dev/null}${COLOR_DEBUG}."
|
||
|
||
return "${return_pending_job_empty}"
|
||
|
||
}
|
||
# }}}
|
||
main() { # {{{
|
||
|
||
sge_disable_host_queue_script="${PROGDIR}/sge.disable.host.queue.sh"
|
||
|
||
## If NO APT package upgrade is available {{{
|
||
### Ensure to remove any temp file related to APT upgrades
|
||
### Exit
|
||
is_apt_upgrade_absent \
|
||
&& rm -f -- "${APT_TMP_FILE}" \
|
||
&& exit 0
|
||
## }}}
|
||
|
||
## If pending job list is empty AND {{{
|
||
## APT package upgrade is available
|
||
### Create a temp file
|
||
### Disable SGE queue
|
||
is_pending_job_empty \
|
||
&& is_apt_upgrade_present \
|
||
&& touch "${APT_TMP_FILE}" && echo "APT upgrade is available." >> "${APT_TMP_FILE}" \
|
||
&& sh "${sge_disable_host_queue_script}" \
|
||
&& exit 0
|
||
## }}}
|
||
|
||
## If APT package upgrade is available {{{
|
||
### Create a temp file
|
||
### Disable SGE queue
|
||
is_apt_upgrade_present \
|
||
&& touch "${APT_TMP_FILE}" && echo "APT upgrade is available." >> "${APT_TMP_FILE}" \
|
||
&& sh "${sge_disable_host_queue_script}" \
|
||
&& exit 0
|
||
## }}}
|
||
|
||
}
|
||
# }}}
|
||
|
||
# Manage arguments # {{{
|
||
# This code can't be in a function due to arguments
|
||
|
||
if [ ! "${NBARGS}" -eq "0" ]; then
|
||
|
||
manage_arg="0"
|
||
|
||
## If the first argument is not an option
|
||
if ! printf -- '%s' "${1}" | grep -q -E -- "^-+";
|
||
then
|
||
## Print help message and exit
|
||
printf '%b\n' "${RED}Invalid option: ${1}${RESET}"
|
||
printf '%b\n' "---"
|
||
usage
|
||
|
||
exit 1
|
||
fi
|
||
|
||
# Parse all options (start with a "-") one by one
|
||
while printf -- '%s' "${1}" | grep -q -E -- "^-+"; do
|
||
|
||
case "${1}" in
|
||
-d|--debug ) ## debug
|
||
DEBUG=0
|
||
;;
|
||
-h|--help ) ## help
|
||
usage
|
||
## Exit after help informations
|
||
exit 0
|
||
;;
|
||
* ) ## unknow option
|
||
printf '%b\n' "${RED}Invalid option: ${1}${RESET}"
|
||
printf '%b\n' "---"
|
||
usage
|
||
exit 1
|
||
;;
|
||
esac
|
||
|
||
debug_message "Arguments management − \
|
||
${RED}${1}${COLOR_DEBUG} option managed."
|
||
|
||
## Move to the next argument
|
||
shift
|
||
manage_arg=$((manage_arg+1))
|
||
|
||
done
|
||
|
||
debug_message "Arguments management − \
|
||
${RED}${manage_arg}${COLOR_DEBUG} argument(s) successfully managed."
|
||
else
|
||
debug_message "Arguments management − \
|
||
No arguments/options to manage."
|
||
fi
|
||
|
||
# }}}
|
||
|
||
main
|
||
|
||
exit 255
|