laconicd/x/evm/types/key.go
Federico Kunze 6c1e7fec01
app, ante, evm: Keeper StateDB refactor (#30)
* evm: keeper statedb refactor

* keeper: implement stateDB account, balance, nonce and suicide functions

* keeper: implement stateDB code and iterator functions

* keeper: implement stateDB log and preimage functions

* update code to use CommitStateDB

* tests updates

* journal changes (wip)

* cache fields

* journal and logs

* minor cleanup

* evm: remove journal related changes

* evm: delete empty account code and storage state

* app, evm: transient store

* ante, evm: refund gas transient

* evm: remove transient keeper state fields

* address comments from review

* evm: undo revision change
2021-05-25 08:56:36 -04:00

117 lines
3.4 KiB
Go

package types
import (
sdk "github.com/cosmos/cosmos-sdk/types"
ethcmn "github.com/ethereum/go-ethereum/common"
ethcrypto "github.com/ethereum/go-ethereum/crypto"
)
const (
// ModuleName string name of module
ModuleName = "evm"
// StoreKey key for ethereum storage data, account code (StateDB) or block
// related data for Web3.
// The EVM module should use a prefix store.
StoreKey = ModuleName
// Transient Key is the key to access the EVM transient store, that is reset
// during the Commit phase.
TransientKey = "transient_" + ModuleName
// RouterKey uses module name for routing
RouterKey = ModuleName
)
const (
prefixBlockHash = iota + 1
prefixBloom
prefixLogs
prefixCode
prefixStorage
prefixChainConfig
prefixBlockHeightHash
prefixHashTxReceipt
prefixBlockHeightTxs
)
const (
prefixTransientSuicided = iota + 1
prefixTransientBloom
prefixTransientTxIndex
prefixTransientRefund
)
// KVStore key prefixes
var (
KeyPrefixBlockHash = []byte{prefixBlockHash}
KeyPrefixBloom = []byte{prefixBloom}
KeyPrefixLogs = []byte{prefixLogs}
KeyPrefixCode = []byte{prefixCode}
KeyPrefixStorage = []byte{prefixStorage}
KeyPrefixChainConfig = []byte{prefixChainConfig}
KeyPrefixBlockHeightHash = []byte{prefixBlockHeightHash}
KeyPrefixHashTxReceipt = []byte{prefixHashTxReceipt}
KeyPrefixBlockHeightTxs = []byte{prefixBlockHeightTxs}
)
var (
KeyPrefixTransientSuicided = []byte{prefixTransientSuicided}
KeyPrefixTransientBloom = []byte{prefixTransientBloom}
KeyPrefixTransientTxIndex = []byte{prefixTransientTxIndex}
KeyPrefixTransientRefund = []byte{prefixTransientRefund}
)
// BloomKey defines the store key for a block Bloom
func BloomKey(height int64) []byte {
heightBytes := sdk.Uint64ToBigEndian(uint64(height))
return append(KeyPrefixBloom, heightBytes...)
}
// AddressStoragePrefix returns a prefix to iterate over a given account storage.
func AddressStoragePrefix(address ethcmn.Address) []byte {
return append(KeyPrefixStorage, address.Bytes()...)
}
// StateKey defines the full key under which an account state is stored.
func StateKey(address ethcmn.Address, key []byte) []byte {
return append(AddressStoragePrefix(address), key...)
}
// KeyBlockHash returns a key for accessing block hash data.
func KeyBlockHash(hash ethcmn.Hash) []byte {
return append(KeyPrefixBlockHash, hash.Bytes()...)
}
// KeyBlockHash returns a key for accessing block hash data.
func KeyBlockHeightHash(height uint64) []byte {
heightBytes := sdk.Uint64ToBigEndian(height)
return append(KeyPrefixBlockHeightHash, heightBytes...)
}
// KeyHashTxReceipt returns a key for accessing tx receipt data by hash.
func KeyHashTxReceipt(hash ethcmn.Hash) []byte {
return append(KeyPrefixHashTxReceipt, hash.Bytes()...)
}
// KeyBlockHeightTxs returns a key for accessing tx hash list by block height.
func KeyBlockHeightTxs(height uint64) []byte {
heightBytes := sdk.Uint64ToBigEndian(height)
return append(KeyPrefixBlockHeightTxs, heightBytes...)
}
// KeyAddressStorage returns the key hash to access a given account state. The composite key
// (address + hash) is hashed using Keccak256.
func KeyAddressStorage(address ethcmn.Address, hash ethcmn.Hash) ethcmn.Hash {
prefix := address.Bytes()
key := hash.Bytes()
compositeKey := make([]byte, len(prefix)+len(key))
copy(compositeKey, prefix)
copy(compositeKey[len(prefix):], key)
return ethcrypto.Keccak256Hash(compositeKey)
}