#!/bin/sh

function ssh_tunnel() {
    echo "Starting jump-machine-production tunnel on 127.0.0.1:2222 ....."
    ssh -o ExitOnForwardFailure=yes -o ServerAliveInterval=30 -NnT -L 127.0.0.1:2222:remote-production-machine:6379 jump-machine-production
}

function close_ssh_tunnel() {
    echo "Ending tunnel session on 127.0.0.1:2222"
    kill `ps -ax | grep "ssh" | grep "remote-production-machine" | cut -d ' ' -f 1`
}

ssh_tunnel &

#the below line registers function close_ssh_tunnel to be called during script finish.
#This will be called irrespective of script success or failure.
trap close_ssh_tunnel EXIT

(
echo "DEL keyToBeDeleted"
echo "exit"
) | telnet 127.0.0.1 2222

exit 0