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[DEV-137] Calculate height correctly in blockdag and mining packages (#67)

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This commit is contained in:
Svarog 2018-09-27 14:24:04 +03:00 committed by stasatdaglabs
parent b348449f01
commit c8461dfcba
3 changed files with 12 additions and 14 deletions
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16
blockdag/validate.go
View File

@ -624,7 +624,7 @@ func checkSerializedHeight(coinbaseTx *util.Tx, wantHeight int32) error {
// the checkpoints are not performed.
//
// This function MUST be called with the chain state lock held (for writes).
func (dag *BlockDAG) checkBlockHeaderContext(header *wire.BlockHeader, selectedParent *blockNode, flags BehaviorFlags) error {
func (dag *BlockDAG) checkBlockHeaderContext(header *wire.BlockHeader, selectedParent *blockNode, blockHeight int32, flags BehaviorFlags) error {
fastAdd := flags&BFFastAdd == BFFastAdd
if !fastAdd {
// Ensure the difficulty specified in the block header matches
@ -652,10 +652,6 @@ func (dag *BlockDAG) checkBlockHeaderContext(header *wire.BlockHeader, selectedP
}
}
// The height of this block is one more than the referenced previous
// block.
blockHeight := selectedParent.height + 1
// Ensure chain matches up to predetermined checkpoints.
blockHash := header.BlockHash()
if !dag.verifyCheckpoint(blockHeight, &blockHash) {
@ -736,7 +732,7 @@ func (dag *BlockDAG) checkBlockContext(block *util.Block, parents blockSet, sele
}
// Perform all block header related validation checks.
header := &block.MsgBlock().Header
err = dag.checkBlockHeaderContext(header, selectedParent, flags)
err = dag.checkBlockHeaderContext(header, selectedParent, block.Height(), flags)
if err != nil {
return err
}
@ -745,13 +741,9 @@ func (dag *BlockDAG) checkBlockContext(block *util.Block, parents blockSet, sele
if !fastAdd {
blockTime := selectedParent.CalcPastMedianTime()
// The height of this block is one more than the referenced
// previous block.
blockHeight := selectedParent.height + 1
// Ensure all transactions in the block are finalized.
for _, tx := range block.Transactions() {
if !IsFinalizedTransaction(tx, blockHeight,
if !IsFinalizedTransaction(tx, block.Height(),
blockTime) {
str := fmt.Sprintf("block contains unfinalized "+
@ -763,7 +755,7 @@ func (dag *BlockDAG) checkBlockContext(block *util.Block, parents blockSet, sele
// Ensure coinbase starts with serialized block heights
coinbaseTx := block.Transactions()[0]
err := checkSerializedHeight(coinbaseTx, blockHeight)
err := checkSerializedHeight(coinbaseTx, block.Height())
if err != nil {
return err
}

8
blockdag/virtualblock.go
View File

@ -74,7 +74,7 @@ func (v *VirtualBlock) addTip(newTip *blockNode) {
v.setTips(updatedTips)
}
// addTip adds the given tip to the set of tips in the virtual block.
// AddTip adds the given tip to the set of tips in the virtual block.
// All former tips that happen to be the given tip's parents are removed
// from the set.
//
@ -106,6 +106,12 @@ func (v *VirtualBlock) SelectedTipHeight() int32 {
return v.SelectedTip().height
}
// Height returns the height of the virtual block.
// In other words: height of highest block + 1
func (v *VirtualBlock) Height() int32 {
return v.tips().maxHeight() + 1
}
// TipHashes returns the hashes of the tips of the virtual block.
func (v *VirtualBlock) TipHashes() []daghash.Hash {
return v.tips().hashes()

2
mining/mining.go
View File

@ -403,7 +403,7 @@ func NewBlkTmplGenerator(policy *Policy, params *dagconfig.Params,
func (g *BlkTmplGenerator) NewBlockTemplate(payToAddress util.Address) (*BlockTemplate, error) {
// Extend the most recently known best block.
virtualBlock := g.dag.VirtualBlock()
nextBlockHeight := virtualBlock.SelectedTipHeight() + 1
nextBlockHeight := virtualBlock.Height()
// Create a standard coinbase transaction paying to the provided
// address. NOTE: The coinbase value will be updated to include the