New script to check maco's upgrade

cluster/maco.check.update.sh

@@ -0,0 +1,154 @@
+#!/bin/sh
+
+# This script will check if Maco require an upgrade and
+# will prepare the host in order to apply upgrade :
+#   1. 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 "${DEBUG}" ] && readonly DEBUG=0
+## Export DEBUG for sub-script
+export DEBUG
+
+## Colors
+readonly PURPLE='\033[1;35m'
+readonly RED='\033[0;31m'
+readonly RESET='\033[0m'
+readonly COLOR_DEBUG="${PURPLE}"
+
+## Maco
+readonly MACO_LOCAL_DIR="/opt/maco"
+readonly MACO_INSTALL_DIR="/mnt/store.ipr/InstallProgs/ipr/maco"
+# }}}
+
+manage_args() {                                                 # {{{
+
+	case "${NBARGS}" in
+		0 ) ## Nothing to do
+			;;
+		* )
+			printf '%b\n' "${RED}Don't expect any arguments.${RESET}"
+			printf '%b\n' "---"
+			usage
+			exit 1
+			;;
+	esac
+
+}
+# }}}
+usage() {                                                       # {{{
+
+	cat <<- EOF
+usage: $PROGNAME
+
+Compare current version of Maco script with the latest and
+ the urgent versions then try to prepare the host by :
+	* Disabling SGE queue
+
+EXAMPLES :
+    - Verify Maco's upgrade and prepare the current host
+        ${PROGNAME}
+	EOF
+
+}
+# }}}
+debug_message() {                                               # {{{
+
+	local_message="${1}"
+
+	## Print message if DEBUG is enable (=0)
+	[ "${DEBUG}" -eq "0" ] && printf '\e[1;35m%-6b\e[m\n' "DEBUG − ${PROGNAME} : ${local_message}"
+
+}
+# }}}
+is_maco_urgent_upgrade_require() {                                                # {{{
+
+	return_urgent_upgrade=""
+
+	if [ "${URGENT_TIMESTAMP}" -gt "${CURRENT_TIMESTAMP}" ]; then
+		debug_message "is_maco_urgent_upgrade_require − \
+Urgent Maco upgrade is available (from version ${CURRENT_MACO_VERSION} to ${URGENT_MACO_VERSION})."
+		return_urgent_upgrade="0"
+	else
+		debug_message "is_maco_urgent_upgrade_require − \
+Local Maco (${CURRENT_MACO_VERSION}) is newer than urgent upgrade (${URGENT_MACO_VERSION})."
+		return_urgent_upgrade="1"
+	fi
+
+	return "${return_urgent_upgrade}"
+
+}
+# }}}
+is_maco_upgrade_require() {                                                # {{{
+
+	return_upgrade=""
+
+	if [ "${LATEST_TIMESTAMP}" -gt "${CURRENT_TIMESTAMP}" ]; then
+		debug_message "is_maco_upgrade_require − \
+Latest Maco upgrade is available (from version ${CURRENT_MACO_VERSION} to ${LATEST_MACO_VERSION})."
+		return_upgrade="0"
+	else
+		debug_message "is_maco_upgrade_require − \
+Local Maco (${CURRENT_MACO_VERSION}) seems up to date (latest : ${LATEST_MACO_VERSION})."
+		return_upgrade="1"
+	fi
+
+	return "${return_upgrade}"
+
+}
+# }}}
+is_maco_uptodate() {                                                # {{{
+
+	return_uptodate=""
+
+	if [ "${CURRENT_TIMESTAMP}" = "${LATEST_TIMESTAMP}" ]; then
+		debug_message "is_maco_uptodate − \
+Local Maco (${CURRENT_MACO_VERSION}) is up to date (latest : ${LATEST_MACO_VERSION})."
+		return_uptodate="0"
+	else
+		debug_message "is_maco_uptodate − \
+Local Maco version (${CURRENT_MACO_VERSION}) is different from latest version (${LATEST_MACO_VERSION})."
+		return_uptodate="1"
+	fi
+
+	return "${return_uptodate}"
+
+}
+# }}}
+main() {                                                        # {{{
+
+	manage_args "${ARGS}"
+
+	## Get all Maco's versions (date)
+	readonly CURRENT_MACO_VERSION=$(< "${MACO_LOCAL_DIR}/maco-version.txt" awk -v FS=. '{ print $1 "-" $2 "-" $3 "T" $4 ":" $5 ":" $6 }' \
+		|| exit 1)
+	readonly LATEST_MACO_VERSION=$(< "${MACO_INSTALL_DIR}/maco-version.txt" awk -v FS=. '{ print $1 "-" $2 "-" $3 "T" $4 ":" $5 ":" $6 }' \
+		|| exit 2)
+	readonly URGENT_MACO_VERSION=$(< "${MACO_INSTALL_DIR}/urgent-maco-version.txt" awk -v FS=. '{ print $1 "-" $2 "-" $3 "T" $4 ":" $5 ":" $6 }' \
+		|| exit 3)
+	## Convert version to timestamp
+	readonly CURRENT_TIMESTAMP=$(date -d "${CURRENT_MACO_VERSION}" "+%s")
+	readonly LATEST_TIMESTAMP=$(date -d "${LATEST_MACO_VERSION}" "+%s")
+	readonly URGENT_TIMESTAMP=$(date -d "${URGENT_MACO_VERSION}" "+%s")
+
+	is_maco_urgent_upgrade_require \
+		&& exit 0
+
+	is_maco_upgrade_require \
+		&& exit 0
+
+	is_maco_uptodate \
+		&& exit 0
+
+}
+# }}}
+
+main
+
+exit 255