laconicd/x/evm/genesis.go

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package evm
import (
"fmt"
sdk "github.com/cosmos/cosmos-sdk/types"
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authtypes "github.com/cosmos/cosmos-sdk/x/auth/types"
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"github.com/ethereum/go-ethereum/common"
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abci "github.com/tendermint/tendermint/abci/types"
ethermint "github.com/tharsis/ethermint/types"
"github.com/tharsis/ethermint/x/evm/keeper"
"github.com/tharsis/ethermint/x/evm/types"
)
// InitGenesis initializes genesis state based on exported genesis
func InitGenesis(
ctx sdk.Context,
k *keeper.Keeper,
accountKeeper types.AccountKeeper,
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data types.GenesisState,
) []abci.ValidatorUpdate {
k.WithContext(ctx)
k.WithChainID(ctx)
k.SetParams(ctx, data.Params)
// ensure evm module account is set
if addr := accountKeeper.GetModuleAddress(types.ModuleName); addr == nil {
panic("the EVM module account has not been set")
}
for _, account := range data.Accounts {
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address := common.HexToAddress(account.Address)
accAddress := sdk.AccAddress(address.Bytes())
// check that the EVM balance the matches the account balance
acc := accountKeeper.GetAccount(ctx, accAddress)
if acc == nil {
panic(fmt.Errorf("account not found for address %s", account.Address))
}
_, ok := acc.(*ethermint.EthAccount)
if !ok {
panic(
fmt.Errorf("account %s must be an %T type, got %T",
account.Address, &ethermint.EthAccount{}, acc,
),
)
}
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k.SetCode(address, common.Hex2Bytes(account.Code))
for _, storage := range account.Storage {
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k.SetState(address, common.HexToHash(storage.Key), common.HexToHash(storage.Value))
}
}
for _, txLog := range data.TxsLogs {
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k.SetLogs(common.HexToHash(txLog.Hash), txLog.EthLogs())
}
return []abci.ValidatorUpdate{}
}
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// ExportGenesis exports genesis state of the EVM module
func ExportGenesis(ctx sdk.Context, k *keeper.Keeper, ak types.AccountKeeper) *types.GenesisState {
k.WithContext(ctx)
var ethGenAccounts []types.GenesisAccount
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ak.IterateAccounts(ctx, func(account authtypes.AccountI) bool {
ethAccount, ok := account.(*ethermint.EthAccount)
if !ok {
// ignore non EthAccounts
return false
}
addr := ethAccount.EthAddress()
storage, err := k.GetAccountStorage(ctx, addr)
if err != nil {
panic(err)
}
genAccount := types.GenesisAccount{
Address: addr.String(),
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Code: common.Bytes2Hex(k.GetCode(addr)),
Storage: storage,
}
ethGenAccounts = append(ethGenAccounts, genAccount)
return false
})
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return &types.GenesisState{
Accounts: ethGenAccounts,
TxsLogs: k.GetAllTxLogs(ctx),
Params: k.GetParams(ctx),
}
}