Context manager to ensure the clean creation and destruction of a socket.

    host
        The IP or hostname of the carbon server
    port
        The port that carbon is listening on

def _carbon(host, port):
    '''
    Context manager to ensure the clean creation and destruction of a socket.

    host
        The IP or hostname of the carbon server
    port
        The port that carbon is listening on
    '''
    carbon_sock = None

    try:
        carbon_sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM,
                                    socket.IPPROTO_TCP)

        carbon_sock.connect((host, port))
    except socket.error as err:
        log.error('Error connecting to %s:%s, %s', host, port, err)
        raise
    else:
        log.debug('Connected to carbon')
        yield carbon_sock
    finally:
        if carbon_sock is not None:
            # Shut down and close socket
            log.debug('Destroying carbon socket')

            carbon_sock.shutdown(socket.SHUT_RDWR)
            carbon_sock.close()