keeper

package
v0.2.5 Latest Latest
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 Go to latest Published: Jul 6, 2023 License: Apache-2.0 Imports: 28 Imported by: 0

Documentation

Index

Constants

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

	// CosmosDenom is the gas denom used by the nemo app
	CosmosDenom = "ufury"
)

Variables

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

ConversionMultiplier is the conversion multiplier between afury and ufury

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 CosmosCoinsFullyBackedInvariant 

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

CosmosCoinsFullyBackedInvariant ensures the total supply of ERC20 representations of sdk.Coins match the balances in the module account.

This invariant depends on the fact that coins can only become part of the balance through conversion to ERC20s. If in the future sdk.Coins can be sent directly to the module account, or the module account balance can be increased in any other way, this invariant should be changed from checking that the balance equals the total supply, to check that the balance is greater than or equal to the total supply.

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 SplitAtfuryCoins 

func SplitAtfuryCoins(coins sdk.Coins) (sdk.Coin, sdkmath.Int, error)

SplitAtfuryCoins splits afury coins to the equivalent ufury coins and any remaining afury balance. An error will be returned if the coins are not valid or if the coins are not the afury denom.

func ValidateEvmCoins 

func ValidateEvmCoins(coins sdk.Coins) error

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

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 afury coin on the evm. x/evm consumes gas and send coins by minting and burning afury coins in its module account and then sending the funds to the target account. This keeper uses both the ufury coin and a separate afury balance to manage the extra percision needed by the evm.

func NewEvmBankKeeper 

func NewEvmBankKeeper(afuryKeeper 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 afury coins by burning the equivalent ufury coins and any remaining afury coins. It will panic if the module account does not exist or is unauthorized.

func (EvmBankKeeper) ConvertAtfuryToUnemo 

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

ConvertAtfuryToUnemo converts all available afury to ufury for a given AccAddress.

func (EvmBankKeeper) ConvertOneUnemoToAtfuryIfNeeded 

func (k EvmBankKeeper) ConvertOneUnemoToAtfuryIfNeeded(ctx sdk.Context, addr sdk.AccAddress, afuryNeeded sdkmath.Int) error

ConvertOneUnemoToAtfuryIfNeeded converts 1 ufury to afury for an address if its afury balance is smaller than the afuryNeeded 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 afury 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 afury coins by minting the equivalent ufury coins and any remaining afury coins. It will panic if the module account does not exist or is unauthorized.

func (EvmBankKeeper) SendCoins 

func (k EvmBankKeeper) SendCoins(ctx sdk.Context, senderAddr sdk.AccAddress, recipientAddr sdk.AccAddress, amt sdk.Coins) error

SendCoins transfers afury coins from a AccAddress to an AccAddress.

func (EvmBankKeeper) SendCoinsFromAccountToModule 

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

SendCoinsFromAccountToModule transfers afury 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 afury 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 storetypes.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 sdkmath.Int) error

AddBalance increments the afury 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) BurnERC20 

func (k Keeper) BurnERC20(
	ctx sdk.Context,
	contractAddr types.InternalEVMAddress,
	initiator types.InternalEVMAddress,
	amount *big.Int,
) error

BurnERC20 burns the token amount from the initiator's balance.

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) ConvertCosmosCoinFromERC20 

func (k *Keeper) ConvertCosmosCoinFromERC20(
	ctx sdk.Context,
	initiator types.InternalEVMAddress,
	receiver sdk.AccAddress,
	coin sdk.Coin,
) error

ConvertCosmosCoinFromERC20 burns the ERC20 wrapper of the cosmos coin and sends the underlying sdk coin form the module account to the receiver.

func (*Keeper) ConvertCosmosCoinToERC20 

func (k *Keeper) ConvertCosmosCoinToERC20(
	ctx sdk.Context,
	initiator sdk.AccAddress,
	receiver types.InternalEVMAddress,
	amount sdk.Coin,
) error

ConvertCosmosCoinToERC20 locks the initiator's sdk.Coin in the module account and mints the receiver a corresponding amount of an ERC20 representing the Coin. If a conversion has never been made before and no contract exists, one will be deployed. Only denoms registered to the AllowedCosmosDenoms param may be converted.

func (Keeper) ConvertERC20ToCoin 

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

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

func (Keeper) DeployNemoWrappedCosmosCoinERC20Contract 

func (k Keeper) DeployNemoWrappedCosmosCoinERC20Contract(
	ctx sdk.Context,
	token types.AllowedCosmosCoinERC20Token,
) (types.InternalEVMAddress, error)

DeployNemoWrappedCosmosCoinERC20Contract validates token details and then deploys an ERC20 contract with the token metadata. This method does NOT check if a token for the provided SdkDenom has already been deployed.

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) GetAllowedTokenMetadata 

func (k Keeper) GetAllowedTokenMetadata(ctx sdk.Context, cosmosDenom string) (types.AllowedCosmosCoinERC20Token, bool)

GetAllowedTokenMetadata gets the token metadata for the given cosmosDenom if it is allowed. Returns the metadata if allowed, and a bool indicating if the denom was in the allow list or not.

func (Keeper) GetBalance 

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

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

func (*Keeper) GetDeployedCosmosCoinContract 

func (k *Keeper) GetDeployedCosmosCoinContract(ctx sdk.Context, cosmosDenom string) (types.InternalEVMAddress, bool)

SetDeployedCosmosCoinContract gets a deployed ERC20FuryWrappedCosmosCoin contract address by cosmos denom Returns the stored address and a bool indicating if it was found or not

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) GetOrDeployCosmosCoinERC20Contract 

func (k *Keeper) GetOrDeployCosmosCoinERC20Contract(
	ctx sdk.Context,
	tokenInfo types.AllowedCosmosCoinERC20Token,
) (types.InternalEVMAddress, error)

GetOrDeployCosmosCoinERC20Contract checks the module store for a deployed contract for the given token info and returns it if preset. Otherwise, it deploys and registers the contract.

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) IterateAllDeployedCosmosCoinContracts 

func (k Keeper) IterateAllDeployedCosmosCoinContracts(ctx sdk.Context, cb func(types.DeployedCosmosCoinContract) bool)

IterateAllDeployedCosmosCoinContracts iterates through all the deployed ERC20 contracts representing cosmos-sdk coins. 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)

QueryERC20BalanceOf makes a contract call to the balanceOf method of the ERC20 contract to get the ERC20 balance of the given account.

func (Keeper) QueryERC20TotalSupply 

func (k Keeper) QueryERC20TotalSupply(
	ctx sdk.Context,
	contractAddr types.InternalEVMAddress,
) (*big.Int, error)

QueryERC20TotalSupply makes a contract call to the totalSupply method of the ERC20 contract to get the total supply of the token.

func (Keeper) RemoveBalance 

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

RemoveBalance decrements the afury balance of an address.

func (Keeper) SendBalance 

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

SendBalance transfers the afury 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 sdkmath.Int) error

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

func (*Keeper) SetDeployedCosmosCoinContract 

func (k *Keeper) SetDeployedCosmosCoinContract(ctx sdk.Context, cosmosDenom string, contractAddress types.InternalEVMAddress) error

SetDeployedCosmosCoinContract stores a single deployed ERC20FuryWrappedCosmosCoin contract 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.

type Migrator 

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

Migrator is a struct for handling in-place store migrations.

func NewMigrator 

func NewMigrator(keeper Keeper) Migrator

NewMigrator returns a new Migrator.

func (Migrator) Migrate1to2 

func (m Migrator) Migrate1to2(ctx sdk.Context) error

Migrate1to2 migrates from version 1 to 2.

Source Files

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