add min vote num (#110)

[bytom/vapor.git] / protocol / block.go

diff --git a/protocol/block.go b/protocol/block.go
index ad4647b..8018113 100644 (file)
--- a/protocol/block.go
+++ b/protocol/block.go
@@ -4,6 +4,8 @@ import (
        log "github.com/sirupsen/logrus"
 
        "github.com/vapor/errors"
+       "github.com/vapor/event"
+       "github.com/vapor/config"
        "github.com/vapor/protocol/bc"
        "github.com/vapor/protocol/bc/types"
        "github.com/vapor/protocol/state"
@@ -74,6 +76,7 @@ func (c *Chain) calcReorganizeNodes(node *state.BlockNode) ([]*state.BlockNode,
 }
 
 func (c *Chain) connectBlock(block *types.Block) (err error) {
+       irreversibleNode := c.bestIrreversibleNode
        bcBlock := types.MapBlock(block)
        if bcBlock.TransactionStatus, err = c.store.GetTransactionStatus(&bcBlock.ID); err != nil {
                return err
@@ -87,8 +90,17 @@ func (c *Chain) connectBlock(block *types.Block) (err error) {
                return err
        }
 
+       voteResultMap := make(map[uint64]*state.VoteResult)
+       if err := c.bbft.ApplyBlock(voteResultMap, block); err != nil {
+               return err
+       }
+
        node := c.index.GetNode(&bcBlock.ID)
-       if err := c.setState(node, utxoView); err != nil {
+       if c.bbft.isIrreversible(block) && block.Height > irreversibleNode.Height {
+               irreversibleNode = node
+       }
+
+       if err := c.setState(node, irreversibleNode, utxoView, voteResultMap); err != nil {
                return err
        }
 
@@ -101,6 +113,8 @@ func (c *Chain) connectBlock(block *types.Block) (err error) {
 func (c *Chain) reorganizeChain(node *state.BlockNode) error {
        attachNodes, detachNodes := c.calcReorganizeNodes(node)
        utxoView := state.NewUtxoViewpoint()
+       voteResultMap := make(map[uint64]*state.VoteResult)
+       irreversibleNode := c.bestIrreversibleNode
 
        for _, detachNode := range detachNodes {
                b, err := c.store.GetBlock(&detachNode.Hash)
@@ -108,18 +122,28 @@ func (c *Chain) reorganizeChain(node *state.BlockNode) error {
                        return err
                }
 
+               if b.Height <= irreversibleNode.Height {
+                       return errors.New("the height of rollback block below the height of irreversible block")
+               }
+
                detachBlock := types.MapBlock(b)
                if err := c.store.GetTransactionsUtxo(utxoView, detachBlock.Transactions); err != nil {
                        return err
                }
+
                txStatus, err := c.GetTransactionStatus(&detachBlock.ID)
                if err != nil {
                        return err
                }
+
                if err := utxoView.DetachBlock(detachBlock, txStatus); err != nil {
                        return err
                }
 
+               if err := c.bbft.DetachBlock(voteResultMap, b); err != nil {
+                       return err
+               }
+
                log.WithFields(log.Fields{"module": logModule, "height": node.Height, "hash": node.Hash.String()}).Debug("detach from mainchain")
        }
 
@@ -133,28 +157,47 @@ func (c *Chain) reorganizeChain(node *state.BlockNode) error {
                if err := c.store.GetTransactionsUtxo(utxoView, attachBlock.Transactions); err != nil {
                        return err
                }
+
                txStatus, err := c.GetTransactionStatus(&attachBlock.ID)
                if err != nil {
                        return err
                }
+
                if err := utxoView.ApplyBlock(attachBlock, txStatus); err != nil {
                        return err
                }
 
+               if err := c.bbft.ApplyBlock(voteResultMap, b); err != nil {
+                       return err
+               }
+
+               if c.bbft.isIrreversible(b) && b.Height > irreversibleNode.Height {
+                       irreversibleNode = attachNode
+               }
+
                log.WithFields(log.Fields{"module": logModule, "height": node.Height, "hash": node.Hash.String()}).Debug("attach from mainchain")
        }
 
-       return c.setState(node, utxoView)
+       return c.setState(node, irreversibleNode, utxoView, voteResultMap)
 }
 
 // SaveBlock will validate and save block into storage
 func (c *Chain) saveBlock(block *types.Block) error {
-       bcBlock := types.MapBlock(block)
-       parent := c.index.GetNode(&block.PreviousBlockHash)
+       if err := c.bbft.ValidateBlock(block); err != nil {
+               return errors.Sub(ErrBadBlock, err)
+       }
 
+       parent := c.index.GetNode(&block.PreviousBlockHash)
+       bcBlock := types.MapBlock(block)
        if err := validation.ValidateBlock(bcBlock, parent); err != nil {
                return errors.Sub(ErrBadBlock, err)
        }
+
+       signature, err := c.bbft.SignBlock(block)
+       if err != nil {
+               return errors.Sub(ErrBadBlock, err)
+       }
+
        if err := c.store.SaveBlock(block, bcBlock.TransactionStatus); err != nil {
                return err
        }
@@ -166,6 +209,13 @@ func (c *Chain) saveBlock(block *types.Block) error {
        }
 
        c.index.AddNode(node)
+
+       if len(signature) != 0 {
+               xPub := config.CommonConfig.PrivateKey().XPub()
+               if err := c.bbft.eventDispatcher.Post(event.BlockSignatureEvent{BlockHash: block.Hash(), Signature: signature, XPub: xPub}); err != nil {
+                       return err
+               }
+       }
        return nil
 }
 
@@ -222,13 +272,18 @@ func (c *Chain) blockProcesser() {
 
 // ProcessBlock is the entry for handle block insert
 func (c *Chain) processBlock(block *types.Block) (bool, error) {
+       if block.Height <= c.bestIrreversibleNode.Height {
+               return false, errors.New("the height of block below the height of irreversible block")
+       }
+
        blockHash := block.Hash()
        if c.BlockExist(&blockHash) {
                log.WithFields(log.Fields{"module": logModule, "hash": blockHash.String(), "height": block.Height}).Info("block has been processed")
                return c.orphanManage.BlockExist(&blockHash), nil
        }
 
-       if parent := c.index.GetNode(&block.PreviousBlockHash); parent == nil {
+       parent := c.index.GetNode(&block.PreviousBlockHash)
+       if parent == nil {
                c.orphanManage.Add(block)
                return true, nil
        }
@@ -252,3 +307,20 @@ func (c *Chain) processBlock(block *types.Block) (bool, error) {
        }
        return false, nil
 }
+
+func (c *Chain) ProcessBlockSignature(signature []byte, xPub [64]byte, blockHeight uint64, blockHash *bc.Hash) error { 
+       isIrreversible, err := c.bbft.ProcessBlockSignature(signature, xPub, blockHeight, blockHash)
+       if err != nil {
+               return err
+       }
+
+       if isIrreversible && blockHeight > c.bestIrreversibleNode.Height {
+               bestIrreversibleNode := c.index.GetNode(blockHash)
+               if err := c.store.SaveChainNodeStatus(c.bestNode, bestIrreversibleNode); err != nil {
+                       return err
+               }
+
+               c.bestIrreversibleNode = bestIrreversibleNode
+       }
+       return nil
+}