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coinbase.go
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coinbase.go
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package keeper
import (
"errors"
sdk "github.com/cosmos/cosmos-sdk/types"
authtypes "github.com/cosmos/cosmos-sdk/x/auth/types"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/crypto"
)
const CoinbaseSeedAddress = "0000000000000000000000000000000000000001"
const CoinbaseNonce = 42
func (k *Keeper) GetFeeCollectorAddress(ctx sdk.Context) (common.Address, error) {
k.cachedFeeCollectorAddressMtx.RLock()
cache := k.cachedFeeCollectorAddress
k.cachedFeeCollectorAddressMtx.RUnlock()
if cache != nil {
return *cache, nil
}
moduleAddr := k.accountKeeper.GetModuleAddress(authtypes.FeeCollectorName)
evmAddr, ok := k.GetEVMAddress(ctx, moduleAddr)
if !ok {
return common.Address{}, errors.New("fee collector's EVM address not found")
}
k.cachedFeeCollectorAddressMtx.Lock()
// ok to write multiple times since it's idempotent
k.cachedFeeCollectorAddress = &evmAddr
k.cachedFeeCollectorAddressMtx.Unlock()
return evmAddr, nil
}
func GetCoinbaseAddress() common.Address {
return crypto.CreateAddress(common.HexToAddress(CoinbaseSeedAddress), CoinbaseNonce)
}