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Handle error (#2296)

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This commit is contained in:
Preston Van Loon 2019-04-18 16:37:50 -04:00 committed by terence tsao
parent 2325b979ab
commit 2018d882f1
1 changed files with 7 additions and 0 deletions
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7
beacon-chain/blockchain/block_processing.go
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@ -3,6 +3,7 @@ package blockchain
import (
"bytes"
"context"
"errors"
"fmt"
b "github.com/prysmaticlabs/prysm/beacon-chain/core/blocks"
@ -57,6 +58,12 @@ func (c *ChainService) ReceiveBlock(ctx context.Context, block *pb.BeaconBlock)
defer span.End()
parentRoot := bytesutil.ToBytes32(block.ParentRootHash32)
parent, err := c.beaconDB.Block(parentRoot)
if err != nil {
return nil, fmt.Errorf("failed to get parent block: %v", err)
}
if parent == nil {
return nil, errors.New("parent does not exist in DB")
}
beaconState, err := c.beaconDB.HistoricalStateFromSlot(ctx, parent.Slot)
if err != nil {
return nil, fmt.Errorf("could not retrieve beacon state: %v", err)