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