Add healthcheck URL to borg install

conf/backup-with-borg

@@ -17,12 +17,21 @@ filter_hooks() {
     sudo ls /usr/share/yunohost/hooks/backup/ /etc/yunohost/hooks.d/backup/ | grep "\-$1_" | cut -d"-" -f2 | uniq 2>> "$err_file"
 }
 
+healthcheck_url="$(sudo yunohost app setting "${borg_id}" healthcheck_url)"
+healthcheck() {
+    if [[ -n "$healthcheck_url" ]]; then
+        curl -s -m 10 -o /dev/null --data-raw "$(echo $2 | tail --bytes=10000)" "$healthcheck_url/$1"
+    fi
+}
+
 fail_if_partially_failed() {
     grep Skipped|Error
 }
 sudo yunohost app setting "${borg_id}" last_run -v "${current_date}"
 sudo yunohost app setting "${borg_id}" state -v "ongoing"
 
+healthcheck "start"
+
 # Backup system part conf
 conf=$(sudo yunohost app setting "${borg_id}" conf)
 if [[ "$conf" = "1" ]]; then
@@ -74,8 +83,10 @@ repository="$(sudo yunohost app setting "${borg_id}" repository)"
 mailalert="$(sudo yunohost app setting "${borg_id}" mailalert)"
 if [[ -n "$errors" ]]; then
     sudo yunohost app setting "${borg_id}" state -v "failed"
+    healthcheck "fail" "$errors"
 else
     sudo yunohost app setting "${borg_id}" state -v "successful"
+    healthcheck
 fi
 
 if [[ -n "$errors" && $mailalert != "never" ]]; then

config_panel.toml

@@ -46,6 +46,12 @@ services = []
         choices.errors_only = "Only if an error occured"
         choices.never = "Never alert me"
         help = "Alerts are sent to the first user of this server"
+
+        [main.general.healthcheck_url]
+        ask.en = "Healthcheck URL"
+        type = "string"
+        help = "Use a healthcheck to detect silent failures. It's optional, if you don't know what it is, just leave it blank or look it up: https://healthchecks.io"
+        optional = "true"
         
     [main.content]
     name = "What should be backuped?"

scripts/config

@@ -62,6 +62,11 @@ validate__on_calendar() {
         echo 'Please follow systemd OnCalendar format: https://man.archlinux.org/man/systemd.time.7#CALENDAR_EVENTS'
 }
 
+validate__healthcheck_url() {
+    [[ $healthcheck_url =~ ^https?://[^/]+(/.*)?$ ]] ||
+        echo 'Please enter a valid URL'
+}
+
 #=================================================
 # SPECIFIC SETTERS FOR TOML SHORT KEYS
 #=================================================