def _build_connection(self, config):
"""
Constructs and returns a Connection object according to the given
configuration. The object returned here is a VadcpClient instance.
@param config configuration dict
@retval a VadcpClient instance
@throws InstrumentParameterException Invalid configuration.
"""
log.info('_build_connection: config=%s' % config)
c4 = config['four_beam']
outfilename = 'vadcp_output_%s_%s.txt' % (c4.host, c4.port)
u4_outfile = file(outfilename, 'w')
c5 = config['fifth_beam']
outfilename = 'vadcp_output_%s_%s.txt' % (c5.host, c5.port)
u5_outfile = file(outfilename, 'w')
log.info("setting VadcpClient with config: %s" % config)
try:
client = VadcpClient(config, u4_outfile, u5_outfile)
except (TypeError, KeyError):
raise InstrumentParameterException('Invalid comms config dict.'
' config=%s' % config)
# set data_listener to the client so we can notify corresponding
# DriverAsyncEvent.SAMPLE events:
def _data_listener(sample):
log.info("_data_listener: sample = %s" % str(sample))
self._driver_event(DriverAsyncEvent.SAMPLE, val=sample)
client.set_data_listener(_data_listener)
return client
def setUpClass(cls):
super(Test, cls).setUpClass()
if cls._skip_reason:
return
ReceiverBuilder.use_greenlets()
cls._samples_recd = 0
c4 = cls._conn_config['four_beam']
outfilename = 'vadcp_output_%s_%s.txt' % (c4.host, c4.port)
u4_outfile = file(outfilename, 'w')
c5 = cls._conn_config['fifth_beam']
outfilename = 'vadcp_output_%s_%s.txt' % (c5.host, c5.port)
u5_outfile = file(outfilename, 'w')
cls._client = VadcpClient(cls._conn_config, u4_outfile, u5_outfile)
cls._client.set_generic_timeout(cls._timeout)
log.info("connecting")
cls._client.set_data_listener(cls._data_listener)
cls._client.connect()
log.info("sending break and waiting for prompt")
cls._client.send_break()
def configure(self, *args, **kwargs):
"""
Configure the driver for communications with the device via
port agent / logger (valid but unconnected connection object).
@param config comms config dict.
@raises InstrumentStateException if command not allowed in current
state
@throws InstrumentParameterException if missing comms or invalid
config dict.
"""
if log.isEnabledFor(logging.DEBUG):
log.debug("args=%s kwargs=%s" % (str(args), str(kwargs)))
self._assert_state(DriverState.UNCONFIGURED)
config = kwargs.get('config', None)
if config is None:
# raise InstrumentParameterException(msg="'config' parameter required")
config = args[0]
c4 = config['four_beam']
outfilename = 'vadcp_output_%s_%s.txt' % (c4.host, c4.port)
u4_outfile = file(outfilename, 'w')
c5 = config['fifth_beam']
outfilename = 'vadcp_output_%s_%s.txt' % (c5.host, c5.port)
u5_outfile = file(outfilename, 'w')
# Verify dict and construct connection client.
log.info("setting VadcpClient with config: %s" % config)
try:
self._client = VadcpClient(config, u4_outfile, u5_outfile)
except (TypeError, KeyError):
raise InstrumentParameterException('Invalid comms config dict.'
' config=%s' % config)
self._driver_event(DriverAsyncEvent.STATE_CHANGE)
self._state = DriverState.DISCONNECTED
