New mode that check update if last update failed

cluster/maco.check.update.sh

@@ -62,6 +62,9 @@ OPTIONS :
     -d,--debug
         Enable debug messages.
 
+    -f,--fail
+        Check update only if the last Maco update failed.
+
     -h,--help
         Print this help message.
 
@@ -231,6 +234,36 @@ Local Maco version (${CURRENT_MACO_VERSION}) is different from latest version ($
 
 	return "${return_uptodate}"
 
+}
+# }}}
+is_maco_status_ok() {                                           # {{{
+
+	## Maco status not ok by default
+	return_maco_status_ok="1"
+
+	## Check if Maco status file is present
+	if [ -f "${MACO_STATUS_FILE}" ]; then
+		debug_message "is_maco_status_ok − \
+Maco status file (${MACO_STATUS_FILE}) exists."
+		local_maco_status=$(grep --max-count=1 -- MacoStatus "${MACO_STATUS_FILE}" | cut --delimiter="=" --fields=2)
+
+		## Check current Maco status
+		if [ "${local_maco_status}" = "last-update-succeeded" ]; then
+			debug_message "is_maco_status_ok − \
+Last Maco upgrade succeed (${local_maco_status})."
+			return_maco_status_ok="0"
+		else
+			debug_message "is_maco_status_ok − \
+Maco require upgrade/maintenance (current state: ${local_maco_status})."
+		fi
+
+	else
+		debug_message "is_maco_status_ok − \
+Maco status file (${MACO_STATUS_FILE}) doesn't exists."
+	fi
+
+	return "${return_maco_status_ok}"
+
 }
 # }}}
 prepare_host_for_upgrade() {                                    # {{{
@@ -274,6 +307,13 @@ main() {                                                        # {{{
 	### }}}
 	## }}}
 
+	## If MACO_FAILED_MODE wasn't defined (argument, environment variable,…) {{{
+	if [ -z "${MACO_FAILED_MODE}" ]; then
+		### Set False by default
+		MACO_FAILED_MODE="1"
+	fi
+	## }}}
+
 	## Get all Maco's versions (date)
 	readonly CURRENT_MACO_VERSION=$(< "${MACO_LOCAL_DIR}/maco-version.txt" awk -v FS=. '{ print $1 "-" $2 "-" $3 "T" $4 ":" $5 ":" $6 }' )
 	readonly LATEST_MACO_VERSION=$(< "${MACO_INSTALL_DIR}/maco-version.txt" awk -v FS=. '{ print $1 "-" $2 "-" $3 "T" $4 ":" $5 ":" $6 }' )
@@ -282,12 +322,24 @@ main() {                                                        # {{{
 	readonly CURRENT_TIMESTAMP=$(date -d "${CURRENT_MACO_VERSION}" "+%s")
 	readonly LATEST_TIMESTAMP=$(date -d "${LATEST_MACO_VERSION}" "+%s")
 	readonly URGENT_TIMESTAMP=$(date -d "${URGENT_MACO_VERSION}" "+%s")
+	# Maco status file
+	readonly MACO_STATUS_FILE="/var/fr.univ-rennes1.ipr.maco.machinestate.txt"
 
 	## If a variable is empty
 	##  Exit with error code
 	is_var_empty "${CURRENT_MACO_VERSION}" "${LATEST_MACO_VERSION}" "${URGENT_MACO_VERSION}" "${CURRENT_TIMESTAMP}" "${LATEST_TIMESTAMP}" "${URGENT_TIMESTAMP}" \
 		&& exit 1
 
+	## If MACO_FAILED_MODE is set {{{
+	### Exit if Maco last-update-succeeded
+	if [ "${MACO_FAILED_MODE}" -eq "0" ]; then
+		### If Macostatus=last-update-succeeded
+		### Exit
+		is_maco_status_ok \
+			&& exit 0
+	fi
+	## }}}
+
 	is_maco_uptodate \
 		&& exit 0
 
@@ -327,6 +379,9 @@ if [ ! "${NBARGS}" -eq "0" ]; then
 	while printf -- '%s' "${1}" | grep -q -E -- "^-+"; do
 
 	case "${1}" in
+		-f|--fail )     ## Failed mode
+			MACO_FAILED_MODE="0"
+			;;
 		-h|--help )     ## help
 			usage
 			## Exit after help informations