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-rw-r--r--core/blockchain.go32
1 files changed, 29 insertions, 3 deletions
diff --git a/core/blockchain.go b/core/blockchain.go
index 1f762d147..0de529480 100644
--- a/core/blockchain.go
+++ b/core/blockchain.go
@@ -601,7 +601,11 @@ func (self *BlockChain) procFutureBlocks() {
}
if len(blocks) > 0 {
types.BlockBy(types.Number).Sort(blocks)
- self.InsertChain(blocks)
+
+ // Insert one by one as chain insertion needs contiguous ancestry between blocks
+ for i := range blocks {
+ self.InsertChain(blocks[i : i+1])
+ }
}
}
@@ -675,6 +679,18 @@ func SetReceiptsData(config *params.ChainConfig, block *types.Block, receipts ty
// transaction and receipt data.
// XXX should this be moved to the test?
func (self *BlockChain) InsertReceiptChain(blockChain types.Blocks, receiptChain []types.Receipts) (int, error) {
+ // Do a sanity check that the provided chain is actually ordered and linked
+ for i := 1; i < len(blockChain); i++ {
+ if blockChain[i].NumberU64() != blockChain[i-1].NumberU64()+1 || blockChain[i].ParentHash() != blockChain[i-1].Hash() {
+ // Chain broke ancestry, log a messge (programming error) and skip insertion
+ failure := fmt.Errorf("non contiguous insert: item %d is #%d [%x…], item %d is #%d [%x…] (parent [%x…])", i-1, blockChain[i-1].NumberU64(),
+ blockChain[i-1].Hash().Bytes()[:4], i, blockChain[i].NumberU64(), blockChain[i].Hash().Bytes()[:4], blockChain[i].ParentHash().Bytes()[:4])
+
+ glog.V(logger.Error).Info(failure.Error())
+ return 0, failure
+ }
+ }
+ // Pre-checks passed, start the block body and receipt imports
self.wg.Add(1)
defer self.wg.Done()
@@ -843,6 +859,18 @@ func (self *BlockChain) WriteBlock(block *types.Block) (status WriteStatus, err
// InsertChain will attempt to insert the given chain in to the canonical chain or, otherwise, create a fork. It an error is returned
// it will return the index number of the failing block as well an error describing what went wrong (for possible errors see core/errors.go).
func (self *BlockChain) InsertChain(chain types.Blocks) (int, error) {
+ // Do a sanity check that the provided chain is actually ordered and linked
+ for i := 1; i < len(chain); i++ {
+ if chain[i].NumberU64() != chain[i-1].NumberU64()+1 || chain[i].ParentHash() != chain[i-1].Hash() {
+ // Chain broke ancestry, log a messge (programming error) and skip insertion
+ failure := fmt.Errorf("non contiguous insert: item %d is #%d [%x…], item %d is #%d [%x…] (parent [%x…])",
+ i-1, chain[i-1].NumberU64(), chain[i-1].Hash().Bytes()[:4], i, chain[i].NumberU64(), chain[i].Hash().Bytes()[:4], chain[i].ParentHash().Bytes()[:4])
+
+ glog.V(logger.Error).Info(failure.Error())
+ return 0, failure
+ }
+ }
+ // Pre-checks passed, start the full block imports
self.wg.Add(1)
defer self.wg.Done()
@@ -916,10 +944,8 @@ func (self *BlockChain) InsertChain(chain types.Blocks) (int, error) {
}
self.reportBlock(block, nil, err)
-
return i, err
}
-
// Create a new statedb using the parent block and report an
// error if it fails.
switch {