try lock with consul

session_id=$(curl -s -XPUT "${consul_address}/v1/session/create" -d "{\"Name\": \"${task_name}\"}"  | jq -r '.ID')
acquire_lock() {
    session_id=${1}
    echo "Trying to acquire the lock..."
    result=$(curl -s -XPUT "${consul_address}/v1/kv/locks/${task_name}/.lock?acquire=${session_id}")
    [ "${result}" == "true" ] && echo "Lock acquired"
}
release_lock() {
    session_id=${1}
    echo "Releasing the lock..."
    result=$(curl -s -XPUT "${consul_address}/v1/kv/locks/${task_name}/.lock?release=${session_id}")
    [ "${result}" == "true" ] && echo "Lock released"
}
destroy_session () {
    session_id=${1}
    echo "Destroying the session..."
    result=$(curl -s -XPUT "${consul_address}/v1/session/destroy/${session_id}")
    [ "${result}" == "true" ] && echo "Session destroyed"
}
if ! acquire_lock "${session_id}"; then
    destroy_session "${session_id}"
    echo "Unable to acquire the lock."
    echo "The job is probably already running on an other server."
    exit 0
fi
do_stuff
release_lock "${session_id}"
destroy_session "${session_id}"