keeper

package
v0.12.4 Latest Latest
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 Go to latest Published: Dec 6, 2022 License: Apache-2.0 Imports: 21 Imported by: 0

Documentation

Index

Constants

View Source 
const (
	// EvmDenom is the gas denom used by the evm
	EvmDenom = "aaeth"

	// CosmosDenom is the gas denom used by the aeth app
	CosmosDenom = "uaeth"
)

Variables

View Source 
var ConversionMultiplier = sdk.NewInt(1_000_000_000_000)

ConversionMultiplier is the conversion multiplier between aaeth and uaeth

Functions

func AllInvariants 

func AllInvariants(bankK types.BankKeeper, k Keeper) sdk.Invariant

AllInvariants runs all invariants of the swap module

func BackedCoinsInvariant 

func BackedCoinsInvariant(_ types.BankKeeper, k Keeper) sdk.Invariant

BackedCoinsInvariant iterates all conversion pairs and asserts that the sdk.Coin balances are less than the module ERC20 balance. **Note:** This compares <= and not == as anyone can send tokens to the ERC20 contract address and break the invariant if a strict equal check.

func FullyBackedInvariant 

func FullyBackedInvariant(bankK types.BankKeeper, k Keeper) sdk.Invariant

FullyBackedInvariant ensures all minor balances are backed by the coins in the module account.

The module balance can be greater than the sum of all minor balances. This can happen in rare cases where the evm module burns tokens.

func NewMsgServerImpl 

func NewMsgServerImpl(keeper Keeper) types.MsgServer

NewMsgServerImpl returns an implementation of the evmutil MsgServer interface for the provided Keeper.

func NewQueryServerImpl 

func NewQueryServerImpl(k Keeper) types.QueryServer

NewQueryServerImpl creates a new server for handling gRPC queries.

func RegisterInvariants 

func RegisterInvariants(ir sdk.InvariantRegistry, bankK types.BankKeeper, k Keeper)

RegisterInvariants registers the swap module invariants

func SmallBalancesInvariant 

func SmallBalancesInvariant(_ types.BankKeeper, k Keeper) sdk.Invariant

SmallBalancesInvariant ensures all minor balances are less than the overflow amount, beyond this they should be converted to the major denom.

func SplitAaethCoins 

func SplitAaethCoins(coins sdk.Coins) (sdk.Coin, sdk.Int, error)

SplitAaethCoins splits aaeth coins to the equivalent uaeth coins and any remaining aaeth balance. An error will be returned if the coins are not valid or if the coins are not the aaeth denom.

func ValidateEvmCoins 

func ValidateEvmCoins(coins sdk.Coins) error

ValidateEvmCoins validates the coins from evm is valid and is the EvmDenom (aaeth).

Types

type EvmBankKeeper 

type EvmBankKeeper struct {
	// contains filtered or unexported fields
}

EvmBankKeeper is a BankKeeper wrapper for the x/evm module to allow the use of the 18 decimal aaeth coin on the evm. x/evm consumes gas and send coins by minting and burning aaeth coins in its module account and then sending the funds to the target account. This keeper uses both the uaeth coin and a separate aaeth balance to manage the extra percision needed by the evm.

func NewEvmBankKeeper 

func NewEvmBankKeeper(aaethKeeper Keeper, bk types.BankKeeper, ak types.AccountKeeper) EvmBankKeeper

func (EvmBankKeeper) BurnCoins 

func (k EvmBankKeeper) BurnCoins(ctx sdk.Context, moduleName string, amt sdk.Coins) error

BurnCoins burns aaeth coins by burning the equivalent uaeth coins and any remaining aaeth coins. It will panic if the module account does not exist or is unauthorized.

func (EvmBankKeeper) ConvertAaethToUaeth 

func (k EvmBankKeeper) ConvertAaethToUaeth(ctx sdk.Context, addr sdk.AccAddress) error

ConvertAaethToUaeth converts all available aaeth to uaeth for a given AccAddress.

func (EvmBankKeeper) ConvertOneUaethToAaethIfNeeded 

func (k EvmBankKeeper) ConvertOneUaethToAaethIfNeeded(ctx sdk.Context, addr sdk.AccAddress, aaethNeeded sdk.Int) error

ConvertOneUaethToAaethIfNeeded converts 1 uaeth to aaeth for an address if its aaeth balance is smaller than the aaethNeeded amount.

func (EvmBankKeeper) GetBalance 

func (k EvmBankKeeper) GetBalance(ctx sdk.Context, addr sdk.AccAddress, denom string) sdk.Coin

GetBalance returns the total **spendable** balance of aaeth for a given account by address.

func (EvmBankKeeper) GetModuleAddress 

func (k EvmBankKeeper) GetModuleAddress(moduleName string) sdk.AccAddress

func (EvmBankKeeper) MintCoins 

func (k EvmBankKeeper) MintCoins(ctx sdk.Context, moduleName string, amt sdk.Coins) error

MintCoins mints aaeth coins by minting the equivalent uaeth coins and any remaining aaeth coins. It will panic if the module account does not exist or is unauthorized.

func (EvmBankKeeper) SendCoinsFromAccountToModule 

func (k EvmBankKeeper) SendCoinsFromAccountToModule(ctx sdk.Context, senderAddr sdk.AccAddress, recipientModule string, amt sdk.Coins) error

SendCoinsFromAccountToModule transfers aaeth coins from an AccAddress to a ModuleAccount. It will panic if the module account does not exist.

func (EvmBankKeeper) SendCoinsFromModuleToAccount 

func (k EvmBankKeeper) SendCoinsFromModuleToAccount(ctx sdk.Context, senderModule string, recipientAddr sdk.AccAddress, amt sdk.Coins) error

SendCoinsFromModuleToAccount transfers aaeth coins from a ModuleAccount to an AccAddress. It will panic if the module account does not exist. An error is returned if the recipient address is black-listed or if sending the tokens fails.

type Keeper 

type Keeper struct {
	// contains filtered or unexported fields
}

Keeper of the evmutil store. This keeper stores additional data related to evm accounts.

func NewKeeper 

func NewKeeper(
	cdc codec.Codec,
	storeKey sdk.StoreKey,
	params paramtypes.Subspace,
	bk types.BankKeeper,
	ak types.AccountKeeper,
) Keeper

NewKeeper creates an evmutil keeper.

func (Keeper) AddBalance 

func (k Keeper) AddBalance(ctx sdk.Context, addr sdk.AccAddress, amt sdk.Int) error

AddBalance increments the aaeth balance of an address.

func (Keeper) BurnConversionPairCoin 

func (k Keeper) BurnConversionPairCoin(
	ctx sdk.Context,
	pair types.ConversionPair,
	coin sdk.Coin,
	account sdk.AccAddress,
) error

BurnConversionPairCoin transfers the provided amount to the module account then burns it.

func (Keeper) CallEVM 

func (k Keeper) CallEVM(
	ctx sdk.Context,
	abi abi.ABI,
	from common.Address,
	contract types.InternalEVMAddress,
	method string,
	args ...interface{},
) (*evmtypes.MsgEthereumTxResponse, error)

CallEVM performs a smart contract method call using given args

func (Keeper) CallEVMWithData 

func (k Keeper) CallEVMWithData(
	ctx sdk.Context,
	from common.Address,
	contract *types.InternalEVMAddress,
	data []byte,
) (*evmtypes.MsgEthereumTxResponse, error)

CallEVMWithData performs a smart contract method call using contract data Derived from tharsis/evmos https://github.com/tharsis/evmos/blob/ee54f496551df937915ff6f74a94732a35abc505/x/erc20/keeper/evm.go

func (Keeper) ConvertCoinToERC20 

func (k Keeper) ConvertCoinToERC20(
	ctx sdk.Context,
	initiatorAccount sdk.AccAddress,
	receiverAccount types.InternalEVMAddress,
	coin sdk.Coin,
) error

ConvertCoinToERC20 converts an sdk.Coin from the originating account to an ERC20 to the receiver account.

func (Keeper) ConvertERC20ToCoin 

func (k Keeper) ConvertERC20ToCoin(
	ctx sdk.Context,
	initiator types.InternalEVMAddress,
	receiver sdk.AccAddress,
	contractAddr types.InternalEVMAddress,
	amount sdk.Int,
) error

ConvertERC20ToCoin converts an ERC20 coin from the originating account to an sdk.Coin to the receiver account.

func (Keeper) DeployTestMintableERC20Contract 

func (k Keeper) DeployTestMintableERC20Contract(
	ctx sdk.Context,
	name string,
	symbol string,
	decimals uint8,
) (types.InternalEVMAddress, error)

DeployTestMintableERC20Contract deploys an ERC20 contract on the EVM as the module account and returns the address of the contract. This contract has minting permissions for the module account. Derived from tharsis/evmos https://github.com/tharsis/evmos/blob/ee54f496551df937915ff6f74a94732a35abc505/x/erc20/keeper/evm.go

func (Keeper) GetAccount 

func (k Keeper) GetAccount(ctx sdk.Context, addr sdk.AccAddress) *types.Account

GetAccount returns the account for a given address.

func (Keeper) GetAllAccounts 

func (k Keeper) GetAllAccounts(ctx sdk.Context) (accounts []types.Account)

GetAllAccounts returns all accounts.

func (Keeper) GetBalance 

func (k Keeper) GetBalance(ctx sdk.Context, addr sdk.AccAddress) sdk.Int

GetBalance returns the total balance of aaeth for a given account by address.

func (Keeper) GetEnabledConversionPairFromDenom 

func (k Keeper) GetEnabledConversionPairFromDenom(
	ctx sdk.Context,
	denom string,
) (types.ConversionPair, error)

GetEnabledConversionPairFromDenom returns an ConversionPair from the sdk.Coin denom.

func (Keeper) GetEnabledConversionPairFromERC20Address 

func (k Keeper) GetEnabledConversionPairFromERC20Address(
	ctx sdk.Context,
	address types.InternalEVMAddress,
) (types.ConversionPair, error)

GetEnabledConversionPairFromERC20Address returns an ConversionPair from the internal contract address.

func (Keeper) GetParams 

func (k Keeper) GetParams(ctx sdk.Context) (params types.Params)

GetParams returns the total set of evm parameters.

func (Keeper) IterateAllAccounts 

func (k Keeper) IterateAllAccounts(ctx sdk.Context, cb func(types.Account) bool)

IterateAllAccounts iterates over all accounts. If true is returned from the callback, iteration is halted.

func (Keeper) LockERC20Tokens 

func (k Keeper) LockERC20Tokens(
	ctx sdk.Context,
	pair types.ConversionPair,
	amount *big.Int,
	initiator types.InternalEVMAddress,
) error

LockERC20Tokens transfers the given amount of a conversion pair ERC20 token from the initiator account to the module account.

func (Keeper) MintConversionPairCoin 

func (k Keeper) MintConversionPairCoin(
	ctx sdk.Context,
	pair types.ConversionPair,
	amount *big.Int,
	recipient sdk.AccAddress,
) (sdk.Coin, error)

MintConversionPairCoin mints the given amount of a ConversionPair denom and sends it to the provided address.

func (Keeper) MintERC20 

func (k Keeper) MintERC20(
	ctx sdk.Context,
	contractAddr types.InternalEVMAddress,
	receiver types.InternalEVMAddress,
	amount *big.Int,
) error

MintERC20 mints the given amount of an ERC20 token to an address. This is unchecked and should only be called after permission and enabled ERC20 checks.

func (Keeper) QueryERC20BalanceOf 

func (k Keeper) QueryERC20BalanceOf(
	ctx sdk.Context,
	contractAddr types.InternalEVMAddress,
	account types.InternalEVMAddress,
) (*big.Int, error)

func (Keeper) RemoveBalance 

func (k Keeper) RemoveBalance(ctx sdk.Context, addr sdk.AccAddress, amt sdk.Int) error

RemoveBalance decrements the aaeth balance of an address.

func (Keeper) SendBalance 

func (k Keeper) SendBalance(ctx sdk.Context, senderAddr sdk.AccAddress, recipientAddr sdk.AccAddress, amt sdk.Int) error

SendBalance transfers the aaeth balance from sender addr to recipient addr.

func (Keeper) SetAccount 

func (k Keeper) SetAccount(ctx sdk.Context, account types.Account) error

SetAccount sets the account for a given address.

func (Keeper) SetBalance 

func (k Keeper) SetBalance(ctx sdk.Context, addr sdk.AccAddress, bal sdk.Int) error

SetBalance sets the total balance of aaeth for a given account by address.

func (*Keeper) SetEvmKeeper 

func (k *Keeper) SetEvmKeeper(evmKeeper types.EvmKeeper)

func (Keeper) SetParams 

func (k Keeper) SetParams(ctx sdk.Context, params types.Params)

SetParams sets the evm parameters to the param space.

func (Keeper) UnlockERC20Tokens 

func (k Keeper) UnlockERC20Tokens(
	ctx sdk.Context,
	pair types.ConversionPair,
	amount *big.Int,
	receiver types.InternalEVMAddress,
) error

UnlockERC20Tokens transfers the given amount of a conversion pair ERC20 token to the provided account.

Source Files

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