def pong_handler(event, source=None):
cmd = Message('PING', next(pyons.get_model().command_index))
pyons.get_model().num_pings_generated += 1
pyons.create_timeout(pyons.get_model().next_ping_timeout, cmd)
pyons.info("received {}, sending {} in {} sec.".format(
event, cmd, pyons.get_model().next_ping_timeout),
sender="pong_handler")
def _handle_generate_vehicle(self, event, source):
msg, lane = event
assert source is self and msg == 'generate vehicle'
model = pyons.get_model()
vehicle = Factory().build_vehicle(lane, model.channel)
model.add_vehicle(vehicle)
pyons.create_timeout(self.params.vehicle_generation_interval(),
('generate vehicle', lane))
self.n_generated += 1
if self.n_generated % 10 == 0:
print("{:4.1f} [GENERATOR] created {} vehicles".format(
systime.time() - self.t_started, self.n_generated))
def handle_update_position(event, source):
assert event == UPDATE_POSITION_EVENT and source is None
model = pyons.get_model()
for tag in model.tags:
assert isinstance(tag, Tag)
tag.update_position()
tag.update_received_power()
j = journal.Journal()
if j.channel_state_logging_enabled:
rec = build_channel_state_record(model.reader, tag, model.channel)
j.write_channel_state(rec)
pyons.create_timeout(model.position_update_interval, UPDATE_POSITION_EVENT)
def handle_response(self, event, source):
if not isinstance(source, Server):
raise RuntimeError("expected events from server only")
self.num_responses_received += 1
pyons.info("received {} from the server".format(event), self)
self.next_request_timeout_id = pyons.create_timeout(
self.request_interval, "timeout")
def receive_finished(self, frame, rx_power, snr=None, ber=None):
if frame is None:
# pyons.fine("receive error {snr}{ber}".format(
# snr=('' if snr is None else ' snr={:.2f}dB'.format(snr)),
# ber=('' if ber is None else ' ber={:.2f}'.format(ber))),
# sender=self.name)
self._reply_timeout_id = pyons.create_timeout(
gen2.max_t2(self.blf), Reader.REPLY_TIMEOUT_EVENT)
return
assert isinstance(frame, gen2.TagFrame)
# pyons.fine("received: {reply}, power={power}dBm{snr}{ber}".format(
# reply=frame.reply, power=rx_power,
# snr=('' if snr is None else ' snr={:.2f}dB'.format(snr)),
# ber=('' if ber is None else ' ber={:.2f}'.format(ber))),
# sender=self.name)
self._cancel_reply_timeout()
self._cancel_delayed_send()
self._last_rx_end = pyons.time()
reply = frame.reply
if isinstance(reply, gen2.Rn16Reply):
self._handle_rn16_reply(reply)
elif isinstance(reply, gen2.AckReply):
self._handle_ack_reply(reply)
elif isinstance(reply, gen2.ReqRnReply):
self._handle_reqrn_reply(reply)
elif isinstance(reply, gen2.ReadReply):
self._handle_read_reply(reply)
else:
raise RuntimeError("reader doesn't support reply {}".format(
type(reply)))
def generate(self, event, source):
assert source is self and event == "timeout"
client_id = self.next_client_id
pyons.info("building a new client #{}".format(client_id), self)
client = Client(client_id, self.server, self.max_requests,
self.request_interval)
pyons.add_entity(client)
self.next_timeout_id = pyons.create_timeout(self.timeout, "timeout")
self.next_client_id += 1
def _signal_transmission_started(self):
if self._state != Signal.State.INIT:
return
if self.sender is None:
raise pyons.errors.MissingFieldError(self.__class__.__name__,
'sender')
if self.receiver is None:
raise pyons.errors.MissingFieldError(self.__class__.__name__,
'receiver')
if self.frame is None:
raise pyons.errors.MissingFieldError(self.__class__.__name__,
'frame')
self.update_transmitter_power(self.initial_power)
distance = vectors.length(self.receiver.node.antenna.position -
self.sender.node.antenna.position)
delay = distance / SPEED_OF_LIGHT
duration = self.frame.duration
self._begin_timeout_id = pyons.create_timeout(delay, 'rx-begin')
self._end_timeout_id = pyons.create_timeout(duration + delay, 'rx-end')
self._state = Signal.State.STARTED
def power_on(self):
if self.is_powered_on:
return
# pyons.fine("powered on", sender=self.name)
self._cancel_power_timeout()
self._power = self.max_tx_power
self._last_powered_on = pyons.time()
self._inventory_flag = gen2.InventoryFlag.A
self.transceiver.set_power(self._power)
for transceiver in self.channel.passive_transceivers:
transceiver.node.update_received_power()
if self.power_on_interval is not None:
self._power_off_timeout_id = pyons.create_timeout(
self.power_on_interval, Reader.POWER_OFF_TIMEOUT_EVENT)
self._handle_round_start()
def power_off(self):
if not self.is_powered_on:
return
# pyons.fine("powered off", sender=self.name)
self._power = None
self._last_powered_off = pyons.time()
self._inventory_flag = None
self._cancel_power_timeout()
self._cancel_delayed_send()
self._cancel_reply_timeout()
self.transceiver.set_power(None)
self.transceiver.clear()
for transceiver in self.channel.passive_transceivers:
transceiver.node.update_received_power()
if self.power_off_interval is not None:
self._power_on_timeout_id = pyons.create_timeout(
self.power_off_interval, Reader.POWER_ON_TIMEOUT_EVENT)
def send(self, frame):
assert isinstance(self.channel, Channel)
if len(self._tx_signals) > 0:
raise RuntimeError("send() while another TX is running")
peers = self.channel.get_peers(self)
for peer in peers:
if peer.node.turned_on:
signal = Signal(sender=self,
receiver=peer,
frame=frame,
power=self.power,
channel=self.channel)
self._tx_signals.append(signal)
pyons.add_entity(signal)
self._tx_end_timeout = pyons.create_timeout(frame.duration, 'tx-end')
# If start sending, nothing would be received anyway
for signal in self._rx_signals:
if signal.state != Signal.State.FINISHED:
signal.broken = True
def _send(self, cmd):
if isinstance(cmd, gen2.Query):
preamble = gen2.ReaderFrame.Preamble(tari=self.tari,
rtcal=self.rtcal,
trcal=self.trcal)
else:
preamble = gen2.ReaderFrame.Sync(tari=self.tari, rtcal=self.rtcal)
frame = gen2.ReaderFrame(preamble=preamble, cmd=cmd)
# pyons.fine("send: {cmd}, duration={duration:.2f}us".format(
# cmd=cmd, duration=frame.duration*1e6), sender=self.name)
self._cancel_delayed_send()
t2 = gen2.min_t2(self.blf)
time_from_rx_end = pyons.time() - self._last_rx_end
if time_from_rx_end >= t2:
self.transceiver.send(frame)
else:
dt = t2 - time_from_rx_end
self._delayed_send_timeout_id = pyons.create_timeout(
dt, (Reader.DELAYED_SEND_EVENT, frame))
def _create_command_timeout(self):
self._cancel_command_timeout()
self._command_timeout_id = pyons.create_timeout(
gen2.max_t2(self.blf), Tag.COMMAND_TIMEOUT_EVENT)
def ping_handler(event, source=None):
reply = Message('PONG', event.index)
pyons.get_model().num_pongs_generated += 1
pyons.create_timeout(pyons.get_model().reply_timeout, reply)
pyons.info("received {}, sending {} in {} sec.".format(
event, reply, pyons.get_model().reply_timeout), sender="ping_handler")
def initialize():
pyons.info("PingPong is initializing", sender="initialize")
cmd = Message('PING', next(pyons.get_model().command_index))
pyons.get_model().num_pings_generated += 1
pyons.create_timeout(0, cmd)
def _initializer(self):
self.n_generated = 0
self.t_started = systime.time()
for lane in range(0, self.params.lanes_number):
pyons.create_timeout(self.params.vehicle_generation_interval(),
('generate vehicle', lane))
def initialize(self):
self.next_timeout_id = pyons.create_timeout(0, "timeout")
def send_finished(self):
self._last_tx_end = pyons.time()
dt = gen2.max_t1(rtcal=self.rtcal, blf=self.blf) + gen2.t3()
self._reply_timeout_id = pyons.create_timeout(
dt, Reader.REPLY_TIMEOUT_EVENT)
def init_mobility_manager():
model = pyons.get_model()
pyons.create_timeout(model.position_update_interval, UPDATE_POSITION_EVENT)
