def _configure_and_stream(
self,
config: dict[str, Any] | None) -> AsyncGenerator[DataEvent, None]:
if config is None:
return stream.empty()
try:
# Run all config steps in order (concat) and one at a time (task_limit=1). Drop the output. There is
# nothing to compare them to (filter => false), then read all sensors of the bricklet and process them in
# parallel (flatten).
config_stream = stream.chain(
stream.iterate(config["on_connect"])
| pipe.starmap(lambda func, timeout: stream.just(func()) | pipe
.timeout(timeout))
| pipe.concat(task_limit=1)
| pipe.filter(lambda result: False),
stream.iterate(config["config"].items())
| pipe.starmap(self._parse_callback_configuration)
| pipe.starmap(self._set_callback_configuration)
| pipe.flatten()
|
pipe.map(lambda args: self._read_sensor(config["uuid"], *args))
| pipe.flatten(),
)
return config_stream
except NotConnectedError:
# Do not log it
raise
except Exception:
self._logger.exception("This should not happen.")
raise
async def test_starmap(assert_run, event_loop):
with event_loop.assert_cleanup():
xs = stream.range(5)
ys = stream.range(5)
zs = xs | pipe.zip(ys) | pipe.starmap(lambda x, y: x+y)
expected = [x*2 for x in range(5)]
await assert_run(zs, expected)
with event_loop.assert_cleanup():
xs = stream.range(1, 4)
ys = stream.range(1, 4)
zs = xs | pipe.zip(ys) | pipe.starmap(asyncio.sleep)
await assert_run(zs, [1, 2, 3])
assert event_loop.steps == [1, 2, 3]
def _stream_data(self, transport):
config_stream = (stream.chain(
stream.call(
call_safely,
f"{self.__database_topic}/get_config",
f"{self.__database_topic}/status_update",
transport.uuid,
),
stream.iterate(
event_bus.subscribe(f"nodes/by_uuid/{transport.uuid}/add")),
)
| pipe.map(lambda config: self._create_device(
transport, config))
| pipe.starmap(lambda config, device: stream.empty(
) if device is None else device.stream_data(config))
| pipe.switch()
| context.pipe(
transport,
on_enter=lambda: logging.getLogger(__name__).info(
"Connected to %s at %s (%s).", transport.name,
transport.uri, transport.label),
on_exit=lambda: logging.getLogger(__name__).info(
"Disconnected from %s at %s (%s).", transport.
name, transport.uri, transport.label),
))
return config_stream
def _read_device(config: dict[str, Any]) -> AsyncGenerator[Any, None]:
on_read: partial
timeout: float
on_read, timeout = config["on_read"]
if inspect.isasyncgenfunction(on_read.func):
return stream.iterate(on_read()) | pipe.timeout(timeout)
return (stream.repeat(config["on_read"], interval=config["interval"])
| pipe.starmap(lambda func, timeout: stream.just(func()) | pipe
.timeout(timeout))
| pipe.concat(task_limit=1))
async def test_starmap(assert_run, event_loop):
with event_loop.assert_cleanup():
xs = stream.range(5)
ys = stream.range(5)
zs = xs | pipe.zip(ys) | pipe.starmap(lambda x, y: x+y)
expected = [x*2 for x in range(5)]
await assert_run(zs, expected)
with event_loop.assert_cleanup():
xs = stream.range(1, 4)
ys = stream.range(1, 4)
zs = xs | pipe.zip(ys) | pipe.starmap(asyncio.sleep)
await assert_run(zs, [1, 2, 3])
assert event_loop.steps == [1, 1, 1]
with event_loop.assert_cleanup():
xs = stream.range(1, 4)
ys = stream.range(1, 4)
zs = xs | pipe.zip(ys) | pipe.starmap(asyncio.sleep, task_limit=1)
await assert_run(zs, [1, 2, 3])
assert event_loop.steps == [1, 2, 3]
def _stream_transport(transport: TinkerforgeTransport):
sensor_stream = stream.chain(
stream.call(transport.enumerate) | pipe.filter(lambda x: False),
stream.iterate(transport.read_enumeration())
| pipe.action(lambda enumeration: event_bus.publish(f"nodes/tinkerforge/{enumeration[1].uid}/remove", None))
| pipe.filter(lambda enumeration: enumeration[0] is not EnumerationType.DISCONNECTED)
| pipe.starmap(lambda enumeration_type, sensor: TinkerforgeSensor(sensor))
| pipe.map(lambda sensor: sensor.stream_data())
| pipe.flatten(),
) | context.pipe(
transport,
on_enter=lambda: logging.getLogger(__name__).info(
"Connected to Tinkerforge host at %s (%s).", transport.uri, transport.label
),
on_exit=lambda: logging.getLogger(__name__).info(
"Disconnected from Tinkerforge host at %s (%s).", transport.uri, transport.label
),
)
return sensor_stream
def _configure_and_stream(
self, config: dict[str, Any]) -> AsyncGenerator[DataEvent, None]:
if config is None:
return stream.empty()
# Run all config steps in order (concat) and one at a time (task_limit=1). Drop the output. There is nothing to
# compare them to (filter => false), then read the device.
config_stream = stream.chain(
stream.iterate(config["on_connect"])
| pipe.starmap(lambda func, timeout: stream.just(func()) | pipe.
timeout(timeout))
| pipe.concat(task_limit=1)
| pipe.filter(lambda result: False),
self._read_device(config)
| pipe.map(lambda item: DataEvent(sender=config["uuid"],
topic=config["topic"],
value=item,
sid=0,
unit=config["unit"]))
| finally_action.pipe(
stream.call(self._clean_up, config["on_disconnect"])),
) | catch.pipe(TypeError, on_exc=self.on_error)
return config_stream