forked from cerc-io/laconicd-deprecated
16df7725c5
* evm: export genesis state * x/evm: split keeper.go * x/evm: retrieve storage from address * changelog * fixes * add check for nil logs * update validation func * fixes * fix non-determinism * stop storage iteration * remove error return value * update changelog * fix test * lint
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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"errors"
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"fmt"
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"github.com/tendermint/tendermint/libs/log"
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"github.com/cosmos/cosmos-sdk/codec"
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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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"math/big"
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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 to update the block bloom filter mappings needed for the
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// Web3 API
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blockKey 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, blockKey, codeKey, storeKey sdk.StoreKey,
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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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blockKey: blockKey,
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CommitStateDB: types.NewCommitStateDB(sdk.Context{}, codeKey, 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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// May be removed when using only as module (only required by rpc api)
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// ----------------------------------------------------------------------------
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// GetBlockHashMapping gets block height from block consensus hash
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func (k Keeper) GetBlockHashMapping(ctx sdk.Context, hash []byte) (int64, error) {
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store := ctx.KVStore(k.blockKey)
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bz := store.Get(hash)
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if len(bz) == 0 {
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return 0, fmt.Errorf("block with hash '%s' not found", ethcmn.BytesToHash(hash).Hex())
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}
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height := binary.BigEndian.Uint64(bz)
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return int64(height), nil
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}
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// SetBlockHashMapping sets the mapping from block consensus hash to block height
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func (k Keeper) SetBlockHashMapping(ctx sdk.Context, hash []byte, height int64) {
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store := ctx.KVStore(k.blockKey)
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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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// May be removed when using only as module (only required by rpc api)
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// ----------------------------------------------------------------------------
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// GetBlockBloomMapping gets bloombits from block height
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func (k Keeper) GetBlockBloomMapping(ctx sdk.Context, height int64) (ethtypes.Bloom, error) {
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store := ctx.KVStore(k.blockKey)
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heightBz := sdk.Uint64ToBigEndian(uint64(height))
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bz := store.Get(types.BloomKey(heightBz))
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if len(bz) == 0 {
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return ethtypes.Bloom{}, fmt.Errorf("block at height %d not found", height)
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}
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return ethtypes.BytesToBloom(bz), nil
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}
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// SetBlockBloomMapping sets the mapping from block height to bloom bits
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func (k Keeper) SetBlockBloomMapping(ctx sdk.Context, bloom ethtypes.Bloom, height int64) {
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store := ctx.KVStore(k.blockKey)
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heightBz := sdk.Uint64ToBigEndian(uint64(height))
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store.Set(types.BloomKey(heightBz), bloom.Bytes())
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}
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// SetTransactionLogs sets the transaction's logs in the KVStore
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func (k *Keeper) SetTransactionLogs(ctx sdk.Context, hash []byte, logs []*ethtypes.Log) {
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store := ctx.KVStore(k.blockKey)
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bz := k.cdc.MustMarshalBinaryLengthPrefixed(logs)
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store.Set(types.LogsKey(hash), bz)
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}
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// GetTransactionLogs gets the logs for a transaction from the KVStore
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func (k *Keeper) GetTransactionLogs(ctx sdk.Context, hash []byte) ([]*ethtypes.Log, error) {
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store := ctx.KVStore(k.blockKey)
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bz := store.Get(types.LogsKey(hash))
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if len(bz) == 0 {
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return nil, errors.New("cannot get transaction logs")
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}
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var logs []*ethtypes.Log
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k.cdc.MustUnmarshalBinaryLengthPrefixed(bz, &logs)
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return logs, nil
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}
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