Method ValidateBlockBody

core/blockchain.go:1258–1299

ValidateBlockBody validates transactions in a block based on known states

(block *types.Block)

// ValidateBlockBody validates transactions in a block based on known states
func (bc *BlockChain) ValidateBlockBody(block *types.Block) error {

	// before validate state, we first validate block body
	err := bc.Validator().ValidateBody(block)
	switch err {
	case ErrKnownBlock:
	default:
		return err
	}

	// create public and private state databases based on parent block
	parent := bc.GetBlock(block.ParentHash(), block.NumberU64()-1)
	pubState, err := state.New(parent.StateRoot(), bc.stateCache)
	if err != nil {
		return err
	}
	privState, err := state.New(GetPrivateStateRoot(bc.db, parent.StateRoot()), bc.privateStateCache)
	if err != nil {
		return err
	}

	// process transactions in the block and make changes to state DBs.
	pubReceipts, privReceipts, logs, usedGas, err := bc.processor.Process(block, pubState, privState, bc.remoteDB,
		bc.vmConfig)
	if err != nil {
		return err
	}

	// validate public state and public receipts
	// TODO: validate private state?
	err = bc.Validator().ValidateState(block, parent, pubState, pubReceipts, usedGas)
	if err != nil {
		return err
	}

	log.Debug("succeed to validate block body, caching receipts and states", "number", block.NumberU64(), "hash", block.Hash().Hex())

	// do caches to reduce insertion time later, this is for Validators
	bc.srCache.add(block.Hash(), pubReceipts, privReceipts, pubState, privState, logs, usedGas)

	return nil
}

// insertChain will execute the actual chain insertion and event aggregation. The
// only reason this method exists as a separate one is to make locking cleaner