diff options
Diffstat (limited to 'core/lattice-data.go')
| -rw-r--r-- | core/lattice-data.go | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/core/lattice-data.go b/core/lattice-data.go index 50fa1d3..31604a6 100644 --- a/core/lattice-data.go +++ b/core/lattice-data.go @@ -412,6 +412,40 @@ func (data *latticeData) prepareBlock(b *types.Block) error { return nil } +// prepareEmptyBlock helps to setup fields of block based on its ChainID. +// including: +// - Acks only acking its parent +// - Timestamp with parent.Timestamp + minBlockProposeInterval +// - ParentHash and Height from parent block. If there is no valid parent block +// (ex. Newly added chain or bootstrap ), these fields would be setup as +// genesis block. +func (data *latticeData) prepareEmptyBlock(b *types.Block) { + // emptyBlock has no proposer. + b.ProposerID = types.NodeID{} + var acks common.Hashes + // Reset fields to make sure we got these information from parent block. + b.Position.Height = 0 + b.Position.Round = 0 + b.ParentHash = common.Hash{} + b.Timestamp = time.Time{} + // Decide valid timestamp range. + homeChain := data.chains[b.Position.ChainID] + if homeChain.tip != nil { + chainTip := homeChain.tip + b.ParentHash = chainTip.Hash + chainTipConfig := data.getConfig(chainTip.Position.Round) + if chainTip.Timestamp.After(chainTipConfig.roundEndTime) { + b.Position.Round = chainTip.Position.Round + 1 + } else { + b.Position.Round = chainTip.Position.Round + } + b.Position.Height = chainTip.Position.Height + 1 + b.Timestamp = chainTip.Timestamp.Add(chainTipConfig.minBlockTimeInterval) + acks = append(acks, chainTip.Hash) + } + b.Acks = common.NewSortedHashes(acks) +} + // TODO(mission): make more abstraction for this method. // nextHeight returns the next height for the chain. func (data *latticeData) nextPosition(chainID uint32) types.Position { |