def test_should_not_block_on_many_writes_if_no_input_being_received_by_the_process(
self):
process = Process("./tests/models/output-once.sh")
process.start()
for _ in range(100000):
process.write({'aaa': 'bbb'})
def test_should_read_and_write(self):
process = Process("./tests/models/output-echo.sh")
process.start()
time.sleep(1)
assert process.read() is None
for value in ['value1', 'value2', 'value3']:
process.write({'key': value})
while process.read() != {'key': value}:
time.sleep(0.1)
process.stop()
def test_should_terminate_process_on_broken_input_pipe(self):
process = Process("./tests/models/break-pipe.sh")
process.start()
# so the process has some time to break the pipe
time.sleep(1)
for _ in range(10):
process.write({'aaa': 'bbb'})
time.sleep(5)
assert process.running is False
class Model:
logger = logging.getLogger()
def __init__(self, command: str, parameters: Parameters):
assert isinstance(command, str)
assert isinstance(parameters, Parameters)
self._command = command
self._arguments = f"--id {parameters.id}"
self._arguments += f" --flipper {parameters.flipper}" if parameters.flipper is not None else ""
self._arguments += f" --flapper {parameters.flapper}" if parameters.flapper is not None else ""
self._arguments += f" --flopper {parameters.flopper}" if parameters.flopper is not None else ""
self._last_output = None
self.logger.info(
f"Instantiated model using process '{self._command} {self._arguments}'"
)
self._process = Process(f"{self._command} {self._arguments}")
self._process.start()
def _ensure_process_running(self):
if not self._process.running:
self.logger.warning(
f"Process '{self._command} {self._arguments}' is down, restarting it"
)
self._process.start()
def send_status(self, input: Status):
assert isinstance(input, Status)
self._ensure_process_running()
record = {
"id": str(input.id),
"bid": str(input.bid),
"lot": str(input.lot),
"beg": str(input.beg),
"guy": str(input.guy),
"era": int(input.era),
"tic": int(input.tic),
"end": int(input.end),
"price": str(input.price) if input.price is not None else None,
}
if input.tab:
record['tab'] = str(input.tab)
if input.flipper:
record['flipper'] = str(input.flipper)
if input.flapper:
record['flapper'] = str(input.flapper)
if input.flopper:
record['flopper'] = str(input.flopper)
self._process.write(record)
def get_stance(self) -> Optional[Stance]:
self._ensure_process_running()
while True:
data = self._process.read()
if data is not None:
self._last_output = Stance(price=Wad.from_number(
data['price']),
gas_price=int(data['gasPrice'])
if 'gasPrice' in data else None)
else:
break
return self._last_output
def terminate(self):
self.logger.info(
f"Terminating model using process '{self._command} {self._arguments}'"
)
self._process.stop()
class Model:
logger = logging.getLogger()
def __init__(self, command: str, parameters: Parameters):
assert isinstance(command, str)
assert isinstance(parameters, Parameters)
self._command = command
self._arguments = f"--id {parameters.id}"
self._arguments += f" --collateral_auction_house {parameters.collateral_auction_house}" if parameters.collateral_auction_house is not None else ""
self._arguments += f" --surplus_auction_house {parameters.surplus_auction_house}" if parameters.surplus_auction_house is not None else ""
self._arguments += f" --debt_auction_house {parameters.debt_auction_house}" if parameters.debt_auction_house is not None else ""
self._arguments += f" --staked_token_auction_house {parameters.staked_token_auction_house}" if parameters.staked_token_auction_house is not None else ""
self._last_output = None
self.logger.info(
f"Instantiated model using process '{self._command} {self._arguments}'"
)
self._process = Process(f"{self._command} {self._arguments}")
self._process.start()
def _ensure_process_running(self):
if not self._process.running:
self.logger.warning(
f"Process '{self._command} {self._arguments}' is down, restarting it"
)
self._process.start()
def send_status(self, input: Status):
assert isinstance(input, Status)
self._ensure_process_running()
record = input.to_dict()
self._process.write(record)
def get_stance(self) -> Optional[Stance]:
self._ensure_process_running()
while True:
data = self._process.read()
if data is not None:
self._last_output = Stance(price=Wad.from_number(data['price'])
if 'price' in data else None,
gas_price=int(data['gasPrice'])
if 'gasPrice' in data else None)
else:
break
return self._last_output
def terminate(self):
self.logger.info(
f"Terminating model using process '{self._command} {self._arguments}'"
)
self._process.stop()