laconicd-deprecated/x/evm/keeper/abci.go
Ray Pierre 75fb3ccb89
fix incorrect blockHash in evm (#780)
* Fix wrong blockHash value in evm

* fix ut

* store current block hash in BeginBlock

* update ut

* update comment

* add changelog
2021-03-18 20:04:29 -07:00

66 lines
2.1 KiB
Go

package keeper
import (
"math/big"
abci "github.com/tendermint/tendermint/abci/types"
sdk "github.com/cosmos/cosmos-sdk/types"
"github.com/ethereum/go-ethereum/common"
ethtypes "github.com/ethereum/go-ethereum/core/types"
)
// BeginBlock sets the block hash -> block height map for the previous block height
// and resets the Bloom filter and the transaction count to 0.
func (k *Keeper) BeginBlock(ctx sdk.Context, req abci.RequestBeginBlock) {
if req.Header.LastBlockId.GetHash() == nil || req.Header.GetHeight() < 1 {
return
}
// Gas costs are handled within msg handler so costs should be ignored
ctx = ctx.WithGasMeter(sdk.NewInfiniteGasMeter())
// Set the hash -> height and height -> hash mapping.
currentHash := req.Hash
height := req.Header.GetHeight()
k.SetHeightHash(ctx, uint64(height), common.BytesToHash(currentHash))
k.SetBlockHash(ctx, currentHash, height)
k.CommitStateDB.SetBlockHash(common.BytesToHash(currentHash))
// reset counters that are used on CommitStateDB.Prepare
k.Bloom = big.NewInt(0)
k.TxCount = 0
}
// EndBlock updates the accounts and commits state objects to the KV Store, while
// deleting the empty ones. It also sets the bloom filers for the request block to
// the store. The EVM end block logic doesn't update the validator set, thus it returns
// an empty slice.
func (k Keeper) EndBlock(ctx sdk.Context, req abci.RequestEndBlock) []abci.ValidatorUpdate {
// Gas costs are handled within msg handler so costs should be ignored
ctx = ctx.WithGasMeter(sdk.NewInfiniteGasMeter())
// Update account balances before committing other parts of state
k.UpdateAccounts(ctx)
root, err := k.Commit(ctx, true)
// Commit state objects to KV store
if err != nil {
k.Logger(ctx).Error("failed to commit state objects", "error", err, "height", ctx.BlockHeight())
panic(err)
}
// reset all cache after account data has been committed, that make sure node state consistent
if err = k.Reset(ctx, root); err != nil {
panic(err)
}
// set the block bloom filter bytes to store
bloom := ethtypes.BytesToBloom(k.Bloom.Bytes())
k.SetBlockBloom(ctx, req.Height, bloom)
return []abci.ValidatorUpdate{}
}