1. 개요

• 받은 block, receipt를 이용해 blockchain의 state를 변경

dir : core/blockchain.go

2. 인수

• block : *types.Block
• receipts : [ ]*types.Receipt
• logs : [ ]*types.Log
• state : *state.StateDB
• emitHeadEvent : bool

3. 구현

• dc에 block, receipts, state 기록

  if err := bc.writeBlockWithState(block, receipts, state); err != nil {
  		return NonStatTy, err
  }
  

• Reorganization이 필요한지 확인 - Reorg에 대한 정보는 해당 페이지 참조

  currentBlock := bc.CurrentBlock()
  reorg, err := bc.forker.ReorgNeeded(currentBlock.Header(), block.Header())
  if err != nil {
  		return NonStatTy, err
  }
  

• 재조직 되었다면 CanonStatTy, 그렇지 않다면 SideStatTy

  if reorg {
  		if block.ParentHash() != currentBlock.Hash() {
  				if err := bc.reorg(currentBlock, block); err != nil {
  						return NonStatTy, err
  				}
  		}
  		status = CanonStatTy
  } else {
  		status = SideStatTy
  }
  

• CanonStatTy라면 head block 교제

  if status == CanonStatTy {
  		bc.writeHeadBlock(block)
  }
  
  bc.futureBlocks.Remove(block.Hash())
  

• evt broadcast

  if status == CanonStatTy {
  		bc.chainFeed.Send(ChainEvent{Block : block, Hash : block.HAsh(), Logs : logs})
  		if len(logs) > 0 {
  				bc.logsFeed.Send(logs)
  		}
  		if emitHeadEvent {
  				bc.chainHeadFeed.Send(ChainHeadEvent{ Block : block })
  		}
  } else {
  		bc.chainSideFeed.Send(ChainSideEvent{Block : block})
  }