def main():
configurations = json.load(open("configurations.json"))
for i, config in enumerate(configurations["vaults"]):
print(f"[{i}] {config['name']}")
config = configurations["vaults"][int(
input("choose configuration to deploy: "))]
deployer = accounts.load(input("deployer account: "))
if input('deploy vault? y/n: ') == 'y':
gov = get_address("gov")
rewards = get_address("rewards")
vault = Vault.deploy(
config["want"],
gov,
rewards,
config["name"],
config["symbol"],
{"from": deployer},
)
else:
vault = Vault.at(get_address('vault'))
strategy = StrategyUniswapPairPickle.deploy(vault, config["jar"],
config["pid"],
{"from": deployer})
secho(
f"deployed {config['symbol']}\nvault: {vault}\nstrategy: {strategy}\n",
fg="green",
)
def main():
deployer = accounts.load(input("deployer account: "))
if input("deploy vault? y/n: ") == "y":
gov = get_address("gov")
rewards = get_address("rewards")
vault = Vault.deploy(
"0x59A19D8c652FA0284f44113D0ff9aBa70bd46fB4",
gov,
rewards,
"Balancer BAL-WETH 80-20 Pool yVault",
"yvBal-BAL-WETH-80-20",
{"from": deployer},
)
else:
vault = Vault.at(get_address("vault"))
strategy = StrategyBalancerLP.deploy(vault, {"from": deployer})
deposit_limit = Wei('50 ether')
vault.setDepositLimit(deposit_limit, {"from": deployer})
vault.addStrategy(strategy, deposit_limit, deposit_limit, 0,
{"from": deployer})
secho(
f"deployed {config['symbol']}\nvault: {vault}\nstrategy: {strategy}\n",
fg="green",
)
def main():
guest = "0xcB16133a37Ef19F90C570B426292BDcca185BF47"
gov = "0x9b5f6921302cc0560fE2eE72E8fcED9D5D26123d"
rewards = "0x93A62dA5a14C80f265DAbC077fCEE437B1a0Efde"
configurations = json.load(open("configurations.json"))
for i, config in enumerate(configurations["vaults"]):
print(f"[{i}] {config['name']}")
config = configurations["vaults"][int(
input("choose configuration to deploy: "))]
deployer = accounts.load(input("deployer account: "))
if input("deploy vault? y/n: ") == "y":
# gov = get_address("gov")
# rewards = get_address("rewards")
vault = Vault.deploy(
config["want"],
gov,
rewards,
config["name"],
config["symbol"],
{
"from": deployer,
"gas_price": Wei("25 gwei")
},
)
else:
vault = Vault.at(get_address("vault"))
strategy = StrategySushiswapPair.deploy(vault, config["pid"], {
"from": deployer,
"gas_price": Wei("25 gwei")
})
deposit_limit = Wei('10 ether')
vault.setDepositLimit(deposit_limit, {
"from": deployer,
"gas_price": Wei("25 gwei")
})
vault.addStrategy(strategy, deposit_limit, deposit_limit, 1000, {
"from": deployer,
"gas_price": Wei("25 gwei")
})
gov = "0xFEB4acf3df3cDEA7399794D0869ef76A6EfAff52"
vault.setGovernance(gov, {"from": deployer, "gas_price": Wei("25 gwei")})
secho(
f"deployed {config['symbol']}\nvault: {vault}\nstrategy: {strategy}\n",
fg="green",
)
def main():
print(f"You are using the '{network.show_active()}' network")
account_name = input(f"What account to use?: ")
dev = accounts.load(account_name)
print(f"You are using: 'dev' [{dev.address}]")
token = Token.at(get_address("ERC20 Token: "))
#token = Token.at("0x6B175474E89094C44Da98b954EedeAC495271d0F")
#gov = get_address("yEarn Governance: ")
gov = dev
#rewards = get_address("Rewards contract: ")
rewards = dev
#name = input(f"Set description ['yearn {token.name()}']: ") or ""
name = "yDAI Test Vault V2"
#symbol = input(f"Set symbol ['y{token.symbol()}']: ") or ""
symbol = 'ytDAI'
print(f"""
Vault Parameters
version: {PACKAGE_VERSION}
token: {token.address}
governer: {gov}
rewards: {rewards}
name: '{name or 'yearn ' + token.name()}'
symbol: '{symbol or 'y' + token.symbol()}'
""")
if input("Deploy New Vault? y/[N]: ").lower() != "y":
return
print("Deploying Vault...")
vault = Vault.deploy(token, gov, rewards, name, symbol, {
'from': dev,
'gas_price': Wei("15 gwei")
})
def main():
dai = interface.ERC20('0x6b175474e89094c44da98b954eedeac495271d0f')
old_strategy = YearnDaiCompStratV2.at(
'0x5b62F24581Ea4bc6d6C5C101DD2Ae7233E422884')
live_strategy = YearnDaiCompStratV2.at(
'0x4C6e9d7E5d69429100Fcc8afB25Ea980065e2773')
vault = Vault.at('0x9B142C2CDAb89941E9dcd0B6C1cf6dEa378A8D7C')
print(f'strategy YearnDaiCompStratV2: {live_strategy.address}')
print(f'Vault: {vault.address}')
print(f'Vault name: {vault.name()} and symbol: {vault.symbol()}')
strategist_confirmed = live_strategy.strategist()
print(f'Strategy strategist: {strategist_confirmed}')
account_name = input(f"What account to use?: ")
dev = accounts.load(account_name)
print(f"You are using: 'dev' [{dev.address}]")
devDai = dai.balanceOf(dev).to('ether')
print(f"You're DAI balance is: [{devDai}]")
are_you_strategist = strategist_confirmed == dev.address
print(f"Are you strategist? {are_you_strategist}")
if input("Continue? y/[N]: ").lower() != "y":
return
vault.migrateStrategy(old_strategy, live_strategy, {
"from": dev,
'gas_price': Wei("25 gwei")
})
print('migrate time')
if input("Continue? y/[N]: ").lower() != "y":
return
live_strategy.harvest({"from": dev, 'gas_price': Wei("25 gwei")})
def rule_new_experiment(self):
token = self.create_token()
print(f"Registry.newExperimentalVault({token}, {self.latest_version})")
vault = Vault.at(
self.registry.newExperimentalVault(token, self.gov, self.gov,
self.gov, "", "").return_value)
self.experiments[token] = [vault]
def main():
print(f"You are using the '{network.show_active()}' network")
bot = accounts.load("bot")
print(f"You are using: 'bot' [{bot.address}]")
# TODO: Allow adding/removing strategies during operation
strategies = [interface.StrategyAPI(get_address("Strategy to farm: "))]
while input("Add another strategy? (y/[N]): ").lower() == "y":
strategies.append(
interface.StrategyAPI(get_address("Strategy to farm: ")))
vault = Vault.at(strategies[0].vault())
for strategy in strategies:
assert (strategy.keeper() == bot.address
), "Bot is not set as keeper! [{strategy.address}]"
assert strategy.vault(
) == vault.address, "Vault mismatch! [{strategy.address}]"
while True:
gas_price = get_gas_price()
starting_balance = bot.balance()
no_action = True
for strategy in strategies:
# Display some relevant statistics
symbol = vault.symbol()[1:]
credit = vault.creditAvailable(strategy) / 10**vault.decimals()
print(
f"[{strategy.address}] Credit Available: {credit:0.3f} {symbol}"
)
debt = vault.debtOutstanding(strategy) / 10**vault.decimals()
print(
f"[{strategy.address}] Debt Outstanding: {debt:0.3f} {symbol}")
# TODO: Actually estimate gas
if strategy.tendTrigger(40000 * gas_price):
try:
strategy.tend({"from": bot, "gas_price": gas_price})
no_action = False
except:
print("Call failed")
elif strategy.harvestTrigger(180000 * gas_price):
try:
strategy.harvest({"from": bot, "gas_price": gas_price})
no_action = False
except:
print("Call failed")
if no_action:
print("Sleeping for 60 seconds...")
sleep(60)
if bot.balance() < 10**8 * gas_price:
# Less than 100m gas left to spend
print(f"Need more ether please! {bot.address}")
def main():
dai = interface.ERC20('0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2')
strategy = YearnWethCreamStratV2.at(
'0x97785a81B3505Ea9026b2aFFa709dfd0C9Ef24f6')
vault = Vault.at('0xf20731f26e98516dd83bb645dd757d33826a37b5')
print(f'strategy YearnWethCreamStratV2: {strategy.address}')
print(f'Vault: {vault.address}')
print(f'Vault name: {vault.name()} and symbol: {vault.symbol()}')
strategist_confirmed = strategy.strategist()
print(f'Strategy strategist: {strategist_confirmed}')
account_name = input(f"What account to use?: ")
dev = accounts.load(account_name)
print(f"You are using: 'dev' [{dev.address}]")
devDai = dai.balanceOf(dev).to('ether')
print(f"You're DAI balance is: [{devDai}]")
are_you_strategist = strategist_confirmed == dev.address
print(f"Are you strategist? {are_you_strategist}")
if input("Continue? y/[N]: ").lower() != "y":
return
deposit_limit = Wei('500 ether')
deposit_limit_eth = deposit_limit.to('ether')
if input(f"Set deposit limit to: {deposit_limit_eth}?").lower() != "y":
return
# vault.setDepositLimit(deposit_limit, {"from": dev, 'gas_price':Wei("17 gwei")})
if input(f"Add strategy: {strategy} ?").lower() != "y":
return
#vault.addStrategy(strategy, deposit_limit, deposit_limit, 500, {"from": dev, 'gas_price':Wei("17 gwei")})
amount = Wei('0.1 ether')
amountE = amount.to('ether')
if input(f"approve: {amountE} WETH?").lower() != "y":
return
#dai.approve(vault, amount*100, {"from": dev, 'gas_price':Wei("17 gwei")})
print('deposit amount:', amount.to('ether'))
if input("Continue? y/[N]: ").lower() != "y":
return
#vault.deposit(amount, {"from": dev, 'gas_price':Wei("17 gwei")})
print('harvest time')
if input("Continue? y/[N]: ").lower() != "y":
return
strategy.harvest({"from": dev, 'gas_price': Wei("25 gwei")})
def main():
deployer = accounts.load(input("deployer account: "))
vault = Vault.at(get_address("vault"))
deposit_limit = Wei('2000 ether')
vault.setDepositLimit(deposit_limit, {"from": deployer})
balance = vault.setPerformanceFee(1000, {"from": deployer})
newGov = get_address("gov")
vault.setGovernance(newGov, {"from": deployer})
def rule_new_deployment(self, new_token="st_bool"):
tokens_with_stale_deployments = [
token for token, deployments in self.vaults.items()
if Version(deployments[-1].apiVersion()) < self.latest_version
]
if new_token or len(tokens_with_stale_deployments) == 0:
token = self.create_token()
else:
token = tokens_with_stale_deployments[-1]
print(f"Registry.newVault({token}, {self.latest_version})")
vault = Vault.at(
self.registry.newVault(token, self.gov, self.gov, "",
"").return_value)
if token in self.vaults:
self.vaults[token].append(vault)
else:
self.vaults[token] = [vault]
def migrate():
assert rpc.is_active()
vault = Vault.at(get_address("vault"))
gov = accounts.at(vault.governance(), force=True)
old_strategy = StrategyBalancerLP.at(get_address("old strategy"))
new_strategy = StrategyBalancerLP.deploy(vault, {"from": gov})
print("pricePerShare", vault.pricePerShare().to("ether"))
print("estimatedTotalAssets",
old_strategy.estimatedTotalAssets().to("ether"))
vault.migrateStrategy(old_strategy, new_strategy, {"from": gov})
print("pricePerShare", vault.pricePerShare().to("ether"))
print("estimatedTotalAssets",
new_strategy.estimatedTotalAssets().to("ether"))
keeper = accounts.at(new_strategy.keeper(), force=True)
for i in range(2):
new_strategy.harvest({"from": keeper})
print("pricePerShare", vault.pricePerShare().to("ether"))
print("estimatedTotalAssets",
new_strategy.estimatedTotalAssets().to("ether"))
def migrate():
assert rpc.is_active()
vault = Vault.at(get_address('vault'))
gov = accounts.at(vault.governance(), force=True)
old_strategy = StrategyUniswapPairPickle.at(get_address('old strategy'))
new_strategy = StrategyUniswapPairPickle.deploy(vault, old_strategy.jar(),
old_strategy.pid(),
{'from': gov})
print('pricePerShare', vault.pricePerShare().to('ether'))
print('estimatedTotalAssets',
old_strategy.estimatedTotalAssets().to('ether'))
vault.migrateStrategy(old_strategy, new_strategy, {'from': gov})
print('pricePerShare', vault.pricePerShare().to('ether'))
print('estimatedTotalAssets',
new_strategy.estimatedTotalAssets().to('ether'))
keeper = accounts.at(new_strategy.keeper(), force=True)
for i in range(2):
new_strategy.harvest({'from': keeper})
print('pricePerShare', vault.pricePerShare().to('ether'))
print('estimatedTotalAssets',
new_strategy.estimatedTotalAssets().to('ether'))
def main():
click.echo(f"You are using the '{network.show_active()}' network")
dev = accounts.load(click.prompt("Account", type=click.Choice(accounts.load())))
click.echo(f"You are using: 'dev' [{dev.address}]")
registry = Registry.at(
get_address("Vault Registry", default="v2.registry.ychad.eth")
)
latest_release = Version(registry.latestRelease())
num_releases = registry.numReleases() - 1
target_release_index = num_releases
release_delta = 0
click.echo(
f"""
Release Information
latest release version: {latest_release}
latest release index: {num_releases}
local package version: {PACKAGE_VERSION}
"""
)
use_proxy = False # NOTE: Use a proxy to save on gas for experimental Vaults
if Version(PACKAGE_VERSION) <= latest_release:
click.echo(
f"""
Recommended Releases
DO NOT USE => 0-2
0.3.2 => 3
0.3.3 => 4
0.3.4 => 5 (DO NOT USE)
0.3.5 => 6
0.4.0 => 7 (DO NOT USE)
0.4.1 => 8
"""
)
target_release_index = click.prompt(
"Please select a target release index from options or press enter for latest release:",
type=click.Choice([str(i) for i in range(num_releases + 1)]),
default=num_releases,
)
if click.confirm("Deploy a Proxy Vault", default="Y"):
use_proxy = True
elif Version(PACKAGE_VERSION) > latest_release:
target_release_index = num_releases + 1
if not click.confirm(f"Deploy {PACKAGE_VERSION} as new release"):
return
token = Token.at(get_address("ERC20 Token"))
if use_proxy:
gov_default = (
"0x16388463d60FFE0661Cf7F1f31a7D658aC790ff7" # strategist msig, no ENS
)
else:
gov_default = "ychad.eth"
gov = get_address("Yearn Governance", default=dev.address)
rewards = get_address("Rewards contract", default="treasury.ychad.eth")
guardian = get_address("Vault Guardian", default="dev.ychad.eth")
management = get_address("Vault Management", default="brain.ychad.eth")
name = click.prompt(f"Set description", default=DEFAULT_VAULT_NAME(token))
symbol = click.prompt(f"Set symbol", default=DEFAULT_VAULT_SYMBOL(token))
release_delta = num_releases - target_release_index
target_release = (
Vault.at(registry.releases(target_release_index)).apiVersion()
if release_delta >= 0
else PACKAGE_VERSION
)
click.echo(
f"""
Vault Deployment Parameters
use proxy: {use_proxy}
target release: {target_release}
release delta: {release_delta}
token address: {token.address}
token symbol: {DEFAULT_VAULT_SYMBOL(token)}
governance: {gov}
management: {management}
rewards: {rewards}
guardian: {guardian}
name: '{name}'
symbol: '{symbol}'
"""
)
if click.confirm("Deploy New Vault"):
args = [
token,
gov,
rewards,
# NOTE: Empty string `""` means no override (don't use click default tho)
name if name != DEFAULT_VAULT_NAME(token) else "",
symbol if symbol != DEFAULT_VAULT_SYMBOL(token) else "",
]
if use_proxy:
# NOTE: Must always include guardian, even if default
args.insert(2, guardian)
args.append(release_delta)
txn_receipt = registry.newExperimentalVault(*args, {"from": dev, "gas_price": Wei('9 gwei'), "required_confs": 0})
vault = Vault.at(txn_receipt.events["NewExperimentalVault"]["vault"])
click.echo(f"Experimental Vault deployed [{vault.address}]")
click.echo(" NOTE: Vault is not registered in Registry!")
else:
args.append(guardian)
args.append(management)
vault = Vault.deploy({"from": dev, "gas_price": Wei('9 gwei'), "required_confs": 0})
vault.initialize(*args)
click.echo(f"New Vault Release deployed [{vault.address}]")
click.echo(
" NOTE: Vault is not registered in Registry, please register!"
)
def main():
print(f"You are using the '{network.show_active()}' network")
bot = accounts.load("bot")
print(f"You are using: 'bot' [{bot.address}]")
# TODO: Allow adding/removing strategies during operation
strategies = [interface.StrategyAPI(get_address("Strategy to farm: "))]
while input("Add another strategy? (y/[N]): ").lower() == "y":
strategies.append(interface.StrategyAPI(get_address("Strategy to farm: ")))
vault = Vault.at(strategies[0].vault())
want = Token.at(vault.token())
for strategy in strategies:
assert (
strategy.keeper() == bot.address
), "Bot is not set as keeper! [{strategy.address}]"
assert (
strategy.vault() == vault.address
), f"Vault mismatch! [{strategy.address}]"
while True:
starting_balance = bot.balance()
calls_made = 0
total_gas_estimate = 0
for strategy in strategies:
# Display some relevant statistics
symbol = want.symbol()
credit = vault.creditAvailable(strategy) / 10 ** vault.decimals()
print(f"[{strategy.address}] Credit Available: {credit:0.3f} {symbol}")
debt = vault.debtOutstanding(strategy) / 10 ** vault.decimals()
print(f"[{strategy.address}] Debt Outstanding: {debt:0.3f} {symbol}")
starting_gas_price = next(gas_strategy.get_gas_price())
try:
tend_gas_estimate = int(
GAS_BUFFER * strategy.tend.estimate_gas({"from": bot})
)
total_gas_estimate += tend_gas_estimate
except ValueError:
print(f"[{strategy.address}] `tend` estimate fails")
tend_gas_estimate = None
try:
harvest_gas_estimate = int(
GAS_BUFFER * strategy.harvest.estimate_gas({"from": bot})
)
total_gas_estimate += harvest_gas_estimate
except ValueError:
print(f"[{strategy.address}] `harvest` estimate fails")
harvest_gas_estimate = None
if harvest_gas_estimate and strategy.harvestTrigger(
harvest_gas_estimate * starting_gas_price
):
try:
strategy.harvest({"from": bot, "gas_price": gas_strategy})
calls_made += 1
except:
print(f"[{strategy.address}] `harvest` call fails")
elif tend_gas_estimate and strategy.tendTrigger(
tend_gas_estimate * starting_gas_price
):
try:
strategy.tend({"from": bot, "gas_price": gas_strategy})
calls_made += 1
except:
print(f"[{strategy.address}] `tend` call fails")
# Check running 10 `tend`s & `harvest`s per strategy at estimated gas price
# would empty the balance of the bot account
if bot.balance() < 10 * total_gas_estimate * starting_gas_price:
print(f"Need more ether please! {bot.address}")
# Wait a minute if we didn't make any calls
if calls_made > 0:
gas_cost = (starting_balance - bot.balance()) / 10 ** 18
num_harvests = bot.balance() // (starting_balance - bot.balance())
print(f"Made {calls_made} calls, spent {gas_cost} ETH on gas.")
print(
f"At this rate, it'll take {num_harvests} harvests to run out of gas."
)
else:
print("Sleeping for 60 seconds...")
sleep(60)
def main():
click.echo(f"You are using the '{network.show_active()}' network")
dev = accounts.load(
click.prompt("Account", type=click.Choice(accounts.load())))
click.echo(f"You are using: 'dev' [{dev.address}]")
registry = Registry.at(
get_address("Vault Registry", default="v2.registry.ychad.eth"))
latest_release = Version(registry.latestRelease())
use_proxy = False # NOTE: Use a proxy to save on gas for experimental Vaults
if Version(PACKAGE_VERSION) < latest_release:
click.echo("Cannot deploy Vault for old API version")
return
elif Version(PACKAGE_VERSION) > latest_release:
if not click.confirm(f"Deploy {PACKAGE_VERSION} as new release"):
return
else:
if not click.confirm("Deploy Experimental Vault"):
return
use_proxy = True
token = Token.at(get_address("ERC20 Token"))
gov = get_address("Yearn Governance", default="ychad.eth")
rewards = get_address("Rewards contract",
default="0x93A62dA5a14C80f265DAbC077fCEE437B1a0Efde")
guardian = get_address("Vault Guardian", default=dev.address)
name = click.prompt(f"Set description", default=DEFAULT_VAULT_NAME(token))
symbol = click.prompt(f"Set symbol", default=DEFAULT_VAULT_SYMBOL(token))
click.echo(f"""
Vault Parameters
version: {PACKAGE_VERSION}
token: {token.address}
governer: {gov}
rewards: {rewards}
guardian: {guardian}
name: '{name}'
symbol: '{symbol}'
""")
if click.confirm("Deploy New Vault"):
args = [
token,
gov,
rewards,
# NOTE: Empty string `""` means no override (don't use click default tho)
name if name != DEFAULT_VAULT_NAME(token) else "",
symbol if symbol != DEFAULT_VAULT_SYMBOL(token) else "",
]
if use_proxy:
# NOTE: Must always include guardian, even if default
args.insert(3, guardian)
txn_receipt = registry.newExperimentalVault(*args, {"from": dev})
vault = Vault.at(
txn_receipt.events["NewExperimentalVault"]["vault"])
click.echo(f"Experimental Vault deployed [{vault.address}]")
click.echo(" NOTE: Vault is not registered in Registry!")
else:
if guardian != dev.address:
# NOTE: Only need to include if guardian is not self
args.push(guardian)
vault = dev.deploy(Vault)
vault.initialize(*args)
click.echo(f"New Vault Release deployed [{vault.address}]")
click.echo(
" NOTE: Vault is not registered in Registry, please register!"
)
def main():
dai = interface.ERC20('0x6b175474e89094c44da98b954eedeac495271d0f')
strategy = YearnDaiCompStratV2.at(
'0x5b62F24581Ea4bc6d6C5C101DD2Ae7233E422884')
vault = Vault.at('0x9B142C2CDAb89941E9dcd0B6C1cf6dEa378A8D7C')
print(f'strategy YearnDaiCompStratV2: {strategy.address}')
print(f'Vault: {vault.address}')
print(f'Vault name: {vault.name()} and symbol: {vault.symbol()}')
strategist_confirmed = strategy.strategist()
print(f'Strategy strategist: {strategist_confirmed}')
account_name = input(f"What account to use?: ")
dev = accounts.load(account_name)
print(f"You are using: 'dev' [{dev.address}]")
devDai = dai.balanceOf(dev).to('ether')
print(f"You're DAI balance is: [{devDai}]")
are_you_strategist = strategist_confirmed == dev.address
print(f"Are you strategist? {are_you_strategist}")
if input("Continue? y/[N]: ").lower() != "y":
return
deposit_limit = Wei('100000 ether')
deposit_limit_eth = deposit_limit.to('ether')
if input(f"Set deposit limit to: {deposit_limit_eth}?").lower() != "y":
return
vault.setDepositLimit(deposit_limit, {
"from": dev,
'gas_price': Wei("17 gwei")
})
if input(f"Add strategy: {strategy} ?").lower() != "y":
return
vault.addStrategy(strategy, deposit_limit, deposit_limit, 50, {
"from": dev,
'gas_price': Wei("17 gwei")
})
amount = Wei('500 ether')
amountE = amount.to('ether')
if input(f"approve: {amountE} DAI?").lower() != "y":
return
dai.approve(vault, amount * 100, {
"from": dev,
'gas_price': Wei("17 gwei")
})
print('deposit amount:', amount.to('ether'))
if input("Continue? y/[N]: ").lower() != "y":
return
vault.deposit(amount, {"from": dev, 'gas_price': Wei("17 gwei")})
print('harvest time')
if input("Continue? y/[N]: ").lower() != "y":
return
strategy.harvest({"from": dev, 'gas_price': Wei("16 gwei")})
def sign_vault_permit(
vault: Vault,
owner: Account, # NOTE: Must be a eth_key account, not Brownie
spender: str,
allowance: int = 2**256 - 1, # Allowance to set with `permit`
deadline: int = 0, # 0 means no time limit
override_nonce: int = None,
):
name = "Yearn Vault"
version = vault.apiVersion()
chain_id = 1 # ganache bug https://github.com/trufflesuite/ganache/issues/1643
if override_nonce:
nonce = override_nonce
else:
nonce = vault.nonces(owner.address)
data = {
"types": {
"EIP712Domain": [
{
"name": "name",
"type": "string"
},
{
"name": "version",
"type": "string"
},
{
"name": "chainId",
"type": "uint256"
},
{
"name": "verifyingContract",
"type": "address"
},
],
"Permit": [
{
"name": "owner",
"type": "address"
},
{
"name": "spender",
"type": "address"
},
{
"name": "value",
"type": "uint256"
},
{
"name": "nonce",
"type": "uint256"
},
{
"name": "deadline",
"type": "uint256"
},
],
},
"domain": {
"name": name,
"version": version,
"chainId": chain_id,
"verifyingContract": str(vault),
},
"primaryType": "Permit",
"message": {
"owner": owner.address,
"spender": spender,
"value": allowance,
"nonce": nonce,
"deadline": deadline,
},
}
permit = encode_structured_data(data)
return owner.sign_message(permit).signature