#!/bin/bash
# rdl_ssh_touch -- try and fix connection

login=$1
file=$2

RDL_PROM_LINES+="
job rdl_ssh_touch
login $login
file $file
"

try_connection() {
    timeout 20 ssh "$login" touch "$file"
}

export -f try_connection

should_reset() {
    last_run=$(< /var/rdl_ssh_touch/"$login")

    if ! test "$last_run" ; then
	echo Can\'t get a last timestamp in echo /var/rdl_ssh_touch/"$login"
	mkdir -v /var/rdl_ssh_touch
	return 0
    else
	# (time now) - (last time) > 6 hours?
	if test $(( $(date +%s) - "$last_run" )) -gt $(( 60 * 60 * 6 )); then
	    return 0
	else
	    echo Already resetted at $(date -d @"$last_run" +"%F %T")
	    return 1
	fi
    fi
}



if ! rdl_prometheus try_connection; then
    echo Can\'t ssh "$login" touch "$file".
    if should_reset; then
	echo Resetting...
	date +%s > /var/rdl_ssh_touch/"$login" \
	    && rdl_prometheus rdl_restart_network \
	    && echo Ok
    fi
fi