def __init__(self,
provider=empty,
middlewares=None,
modules=None,
ens=empty):
if modules is None:
modules = {
'hls': (Hls, ),
'eth': (Hls, ),
'personal': (Personal, ),
"net": (Net, ),
"admin": (Admin, ),
}
else:
modules['hls'] = (Hls, )
modules['eth'] = (Eth, )
modules['personal'] = (Personal, )
modules['net'] = (Net, )
modules['admin'] = (Admin, )
if middlewares is None:
middlewares = [
(name_to_address_middleware(self), 'name_to_address'),
(attrdict_middleware, 'attrdict'),
(pythonic_middleware, 'pythonic'),
(abi_middleware, 'abi'),
]
super().__init__(provider=provider,
middlewares=middlewares,
modules=modules,
ens=ens)
def new_default_middlewares(self, web3):
return [
(request_parameter_normalizer, 'request_param_normalizer'),
(gas_price_strategy_middleware, 'gas_price_strategy'),
(name_to_address_middleware(web3), 'name_to_address'),
(attrdict_middleware, 'attrdict'),
(pythonic_middleware, 'pythonic'),
(normalize_errors_middleware, 'normalize_errors'),
(validation_middleware, 'validation'),
(abi_middleware, 'abi'),
]
def default_middlewares(web3):
'''
List the default middlewares for the request manager.
Leaving ens unspecified will prevent the middleware from resolving names.
'''
return [
(name_to_address_middleware(web3), 'name_to_address'),
(attrdict_middleware, 'attrdict'),
(pythonic_middleware, 'pythonic'),
(abi_middleware, 'abi'),
]
def default_middlewares(web3):
'''
List the default middlewares for the request manager.
Leaving ens unspecified will prevent the middleware from resolving names.
'''
return [
(gas_price_strategy_middleware, 'gas_price_strategy'),
(name_to_address_middleware(web3), 'name_to_address'),
(attrdict_middleware, 'attrdict'),
(pythonic_middleware, 'pythonic'),
(abi_middleware, 'abi'),
]
def default_middlewares(web3):
'''
List the default middlewares for the request manager.
Leaving ens unspecified will prevent the middleware from resolving names.
'''
return [
(gas_price_strategy_middleware, 'gas_price_strategy'),
(name_to_address_middleware(web3), 'name_to_address'),
(attrdict_middleware, 'attrdict'),
(pythonic_middleware, 'pythonic'),
(normalize_errors_middleware, 'normalize_errors'),
(validation_middleware, 'validation'),
(abi_middleware, 'abi'),
]
def default_middlewares(web3: 'Web3') -> List[Tuple[Middleware, str]]:
"""
List the default middlewares for the request manager.
Leaving ens unspecified will prevent the middleware from resolving names.
"""
return [
(request_parameter_normalizer,
'request_param_normalizer'), # Delete
(gas_price_strategy_middleware, 'gas_price_strategy'),
(name_to_address_middleware(web3), 'name_to_address'), # Add Async
(attrdict_middleware, 'attrdict'), # Delete
(pythonic_middleware, 'pythonic'), # Delete
(validation_middleware, 'validation'),
(abi_middleware, 'abi'), # Delete
(buffered_gas_estimate_middleware, 'gas_estimate'),
]
def default_middlewares(web3):
"""
List the default middlewares for the request manager.
Leaving ens unspecified will prevent the middleware from resolving names.
"""
return [
(request_parameter_normalizer,
'request_param_normalizer'), # Delete
(gas_price_strategy_middleware, 'gas_price_strategy'), # Add Async
(name_to_address_middleware(web3), 'name_to_address'), # Add Async
(attrdict_middleware, 'attrdict'), # Delete
(pythonic_middleware, 'pythonic'), # Delete
(normalize_errors_middleware, 'normalize_errors'), # Add async
(validation_middleware, 'validation'), # Add async
(abi_middleware, 'abi'), # Delete
]
def w3():
w3 = Web3(providers=[BaseProvider()], middlewares=[])
w3.ens = TempENS({NAME: ADDRESS})
w3.middleware_stack.add(name_to_address_middleware(w3))
return w3
def w3():
w3 = Web3(provider=BaseProvider(), middlewares=[])
w3.ens = TempENS({NAME: ADDRESS})
w3.middleware_onion.add(name_to_address_middleware(w3))
return w3
import sys
import json
from dataclasses import dataclass
from web3.auto import w3
from web3.middleware import name_to_address_middleware
from web3.contract import Contract
SWAP_ADDRESS = '0xe5FdBab9Ad428bBB469Dee4CB6608C0a8895CbA5'
TOKEN_ADDRESS = '0xDBe281E17540Da5305Eb2AeFB8CeF70E6dB1A0A9'
ABI = json.load(open('curve.abi'))
w3.middleware_onion.add(name_to_address_middleware(w3))
swap = w3.eth.contract(SWAP_ADDRESS, abi=ABI['swap']).caller()
token = w3.eth.contract(TOKEN_ADDRESS, abi=ABI['erc20']).caller()
@dataclass
class Coin:
coin: Contract
underlying: Contract
decimals: int
reserve: float
@classmethod
def from_index(cls, i):
coin = w3.eth.contract(swap.coins(i), abi=ABI['cerc20']).caller()
underlying = w3.eth.contract(swap.underlying_coins(i), abi=ABI['erc20']).caller()
decimals = underlying.decimals()
reserve = swap.balances(i) / 1e18 * coin.exchangeRateCurrent() / 10 ** decimals
return cls(coin=coin, underlying=underlying, decimals=decimals, reserve=reserve)
