class SmartGasPrice(GasPrice):
"""
DEPRACATED. This class is maintained for legacy support. All new development should utilize DynamicGasPrice below
Simple and smart gas price scenario.
Uses an EthGasStation feed. Starts with fast+10GWei, adding another 10GWei each 60 seconds
up to fast+50GWei maximum. Falls back to a default scenario (incremental as well) if
the EthGasStation feed unavailable for more than 10 minutes.
"""
def __init__(self, api_key: None):
self.gas_station = EthGasStation(refresh_interval=60,
expiry=600,
api_key=api_key)
def get_gas_price(self, time_elapsed: int) -> Optional[int]:
fast_price = self.gas_station.fast_price()
if fast_price is not None:
# start from fast_price + 10 GWei
# increase by 10 GWei every 60 seconds
# max is fast_price + 50 GWei
return min(
int(fast_price * 1.1) + int(time_elapsed / 60) *
(10 * self.GWEI),
int(fast_price * 1.1) + (50 * self.GWEI))
else:
# default gas pricing when EthGasStation feed is down
return IncreasingGasPrice(initial_price=20 * self.GWEI,
increase_by=10 * self.GWEI,
every_secs=60,
max_price=100 *
self.GWEI).get_gas_price(time_elapsed)
def __init__(self,
refresh_interval: int,
expiry: int,
ethgasstation_api_key=None,
poa_network_alt_url=None,
etherscan_api_key=None,
gasnow_app_name="pygasprice-client"):
self.clients = [
EthGasStation(refresh_interval=refresh_interval,
expiry=expiry,
api_key=ethgasstation_api_key),
EtherchainOrg(refresh_interval=refresh_interval, expiry=expiry),
POANetwork(refresh_interval=refresh_interval,
expiry=expiry,
alt_url=poa_network_alt_url),
Etherscan(refresh_interval=refresh_interval,
expiry=expiry,
api_key=etherscan_api_key),
Gasnow(refresh_interval=refresh_interval,
expiry=expiry,
app_name=gasnow_app_name)
]
self._safe_low_price = None
self._standard_price = None
self._fast_price = None
self._fastest_price = None
super().__init__("aggregator", refresh_interval, expiry)
def __init__(self, arguments, web3: Web3):
assert isinstance(web3, Web3)
self.gas_station = None
self.fixed_gas = None
self.web3 = web3
if arguments.ethgasstation_api_key:
self.gas_station = EthGasStation(refresh_interval=60, expiry=600, api_key=arguments.ethgasstation_api_key)
elif arguments.etherchain_gas:
self.gas_station = EtherchainOrg(refresh_interval=60, expiry=600)
elif arguments.poanetwork_gas:
self.gas_station = POANetwork(refresh_interval=60, expiry=600, alt_url=arguments.poanetwork_url)
elif arguments.etherscan_gas:
if arguments.etherscan_key:
self.gas_station = Etherscan(refresh_interval=60, expiry=600, api_key=arguments.etherscan_key)
else:
self.gas_station = Etherscan(refresh_interval=60, expiry=600)
elif arguments.gasnow_gas:
if arguments.gasnow_app_name:
self.gas_station = GasNow(refresh_interval=60, expiry=600, app_name=arguments.gasnow_app_name)
else:
self.gas_station = GasNow(refresh_interval=60, expiry=600)
elif arguments.fixed_gas_price:
self.fixed_gas = int(round(arguments.fixed_gas_price * self.GWEI))
self.initial_multiplier = arguments.gas_initial_multiplier
self.reactive_multiplier = arguments.gas_reactive_multiplier
self.gas_maximum = int(round(arguments.gas_maximum * self.GWEI))
if self.fixed_gas:
assert self.fixed_gas <= self.gas_maximum
def __init__(self, refresh_interval: int, expiry: int, ethgasstation_api_key=None, poa_network_alt_url=None,
etherscan_api_key=None, blocknative_api_key=None):
self.clients = [
EthGasStation(refresh_interval=refresh_interval, expiry=expiry, api_key=ethgasstation_api_key),
EtherchainOrg(refresh_interval=refresh_interval, expiry=expiry),
POANetwork(refresh_interval=refresh_interval, expiry=expiry, alt_url=poa_network_alt_url),
Etherscan(refresh_interval=refresh_interval, expiry=expiry, api_key=etherscan_api_key)
]
if blocknative_api_key:
self.clients.append(Blocknative(refresh_interval=refresh_interval, expiry=expiry, api_key=blocknative_api_key))
super().__init__("aggregator", refresh_interval, expiry)
def test_ethgasstation_integration():
logging.basicConfig(format='%(asctime)-15s %(levelname)-8s %(message)s', level=logging.DEBUG)
logging.getLogger('urllib3.connectionpool').setLevel(logging.INFO)
logging.getLogger('requests.packages.urllib3.connectionpool').setLevel(logging.INFO)
egs = EthGasStation(10, 600)
while True:
safe_low_price = egs.safe_low_price()
logging.info(safe_low_price)
standard_price = egs.standard_price()
logging.info(standard_price)
fast_price = egs.fast_price()
logging.info(fast_price)
if safe_low_price is not None and standard_price is not None and fast_price is not None:
break
time.sleep(1)
def __init__(self, arguments):
self.gas_station = None
if arguments.ethgasstation_api_key:
self.gas_station = EthGasStation(
refresh_interval=60,
expiry=600,
api_key=arguments.ethgasstation_api_key)
elif arguments.etherchain_gas:
self.gas_station = EtherchainOrg(refresh_interval=60, expiry=600)
elif arguments.poanetwork_gas:
self.gas_station = POANetwork(refresh_interval=60,
expiry=600,
alt_url=arguments.poanetwork_url)
def __init__(self, arguments):
self.gas_station = None
self.fixed_gas = None
if arguments.ethgasstation_api_key:
self.gas_station = EthGasStation(refresh_interval=60, expiry=600, api_key=arguments.ethgasstation_api_key)
elif arguments.etherchain_gas:
self.gas_station = EtherchainOrg(refresh_interval=60, expiry=600)
elif arguments.poanetwork_gas:
self.gas_station = POANetwork(refresh_interval=60, expiry=600, alt_url=arguments.poanetwork_url)
elif arguments.fixed_gas_price:
self.fixed_gas = int(round(arguments.fixed_gas_price * self.GWEI))
self.initial_multiplier = arguments.gas_initial_multiplier
self.reactive_multiplier = arguments.gas_reactive_multiplier
self.gas_maximum = int(round(arguments.gas_maximum * self.GWEI))
if self.fixed_gas:
assert self.fixed_gas <= self.gas_maximum
def test_ethgasstation_url():
egs = EthGasStation(10, 600)
assert egs.URL == "https://ethgasstation.info/json/ethgasAPI.json"
egs = EthGasStation(10, 600, "abcdefg")
assert egs.URL == "https://ethgasstation.info/json/ethgasAPI.json?api-key=abcdefg"
def __init__(self, api_key: None):
self.gas_station = EthGasStation(refresh_interval=60,
expiry=600,
api_key=api_key)