sub worker{
    my $self = shift;

    while( my $task = $some_queue->dequeue ) {
        
        # do_something() can print debug output to STDOUT
        my $result = $self->do_something();
        
        my $status = { result => $result, time => time(), worker_id => $self->id};
        $self->update_status( $status);
    }

}