427e96c1de
* evm: use prefix stores, move SetBlockBloom to EndBlock, bug fixes * add logs to genesis state * log tests * commit and finalize on InitGenesis * validate TransactionLogs * changelog * fix test-import * fix lint * add more tests
123 lines
4.0 KiB
Go
123 lines
4.0 KiB
Go
package keeper
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import (
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"encoding/binary"
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"fmt"
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"math/big"
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"github.com/tendermint/tendermint/libs/log"
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"github.com/cosmos/cosmos-sdk/codec"
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"github.com/cosmos/cosmos-sdk/store/prefix"
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sdk "github.com/cosmos/cosmos-sdk/types"
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"github.com/cosmos/ethermint/x/evm/types"
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ethcmn "github.com/ethereum/go-ethereum/common"
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ethtypes "github.com/ethereum/go-ethereum/core/types"
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)
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// Keeper wraps the CommitStateDB, allowing us to pass in SDK context while adhering
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// to the StateDB interface.
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type Keeper struct {
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// Amino codec
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cdc *codec.Codec
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// Store key required for the EVM Prefix KVStore. It is required by:
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// - storing Account's Storage State
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// - storing Account's Code
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// - storing transaction Logs
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// - storing block height -> bloom filter map. Needed for the Web3 API.
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// - storing block hash -> block height map. Needed for the Web3 API.
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storeKey sdk.StoreKey
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CommitStateDB *types.CommitStateDB
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// Transaction counter in a block. Used on StateSB's Prepare function.
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// It is reset to 0 every block on BeginBlock so there's no point in storing the counter
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// on the KVStore or adding it as a field on the EVM genesis state.
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TxCount int
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Bloom *big.Int
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}
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// NewKeeper generates new evm module keeper
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func NewKeeper(
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cdc *codec.Codec, storeKey sdk.StoreKey, ak types.AccountKeeper, bk types.BankKeeper,
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) Keeper {
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return Keeper{
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cdc: cdc,
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storeKey: storeKey,
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CommitStateDB: types.NewCommitStateDB(sdk.Context{}, storeKey, ak, bk),
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TxCount: 0,
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Bloom: big.NewInt(0),
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}
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}
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// Logger returns a module-specific logger.
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func (k Keeper) Logger(ctx sdk.Context) log.Logger {
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return ctx.Logger().With("module", fmt.Sprintf("x/%s", types.ModuleName))
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}
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// ----------------------------------------------------------------------------
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// Block hash mapping functions
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// Required by Web3 API.
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// TODO: remove once tendermint support block queries by hash.
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// ----------------------------------------------------------------------------
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// GetBlockHash gets block height from block consensus hash
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func (k Keeper) GetBlockHash(ctx sdk.Context, hash []byte) (int64, bool) {
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store := prefix.NewStore(ctx.KVStore(k.storeKey), types.KeyPrefixBlockHash)
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bz := store.Get(hash)
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if len(bz) == 0 {
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return 0, false
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}
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height := binary.BigEndian.Uint64(bz)
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return int64(height), true
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}
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// SetBlockHash sets the mapping from block consensus hash to block height
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func (k Keeper) SetBlockHash(ctx sdk.Context, hash []byte, height int64) {
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store := prefix.NewStore(ctx.KVStore(k.storeKey), types.KeyPrefixBlockHash)
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bz := sdk.Uint64ToBigEndian(uint64(height))
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store.Set(hash, bz)
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}
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// ----------------------------------------------------------------------------
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// Block bloom bits mapping functions
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// Required by Web3 API.
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// ----------------------------------------------------------------------------
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// GetBlockBloom gets bloombits from block height
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func (k Keeper) GetBlockBloom(ctx sdk.Context, height int64) (ethtypes.Bloom, bool) {
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store := prefix.NewStore(ctx.KVStore(k.storeKey), types.KeyPrefixBloom)
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bz := store.Get(types.BloomKey(height))
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if len(bz) == 0 {
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return ethtypes.Bloom{}, false
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}
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return ethtypes.BytesToBloom(bz), true
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}
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// SetBlockBloom sets the mapping from block height to bloom bits
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func (k Keeper) SetBlockBloom(ctx sdk.Context, height int64, bloom ethtypes.Bloom) {
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store := prefix.NewStore(ctx.KVStore(k.storeKey), types.KeyPrefixBloom)
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store.Set(types.BloomKey(height), bloom.Bytes())
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}
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// GetAllTxLogs return all the transaction logs from the store.
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func (k Keeper) GetAllTxLogs(ctx sdk.Context) []types.TransactionLogs {
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store := ctx.KVStore(k.storeKey)
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iterator := sdk.KVStorePrefixIterator(store, types.KeyPrefixLogs)
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defer iterator.Close()
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txsLogs := []types.TransactionLogs{}
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for ; iterator.Valid(); iterator.Next() {
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hash := ethcmn.BytesToHash(iterator.Key())
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var logs []*ethtypes.Log
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k.cdc.MustUnmarshalBinaryLengthPrefixed(iterator.Value(), &logs)
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// add a new entry
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txLog := types.NewTransactionLogs(hash, logs)
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txsLogs = append(txsLogs, txLog)
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}
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return txsLogs
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}
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