protocol/consensus.go

   1 package protocol
   2
   3 import (
   4         "github.com/bytom/bytom/protocol/bc"
   5         "github.com/bytom/bytom/protocol/bc/types"
   6         "github.com/bytom/bytom/protocol/state"
   7 )
   8
   9 // Casper is BFT based proof of stack consensus algorithm, it provides safety and liveness in theory
  10 type CasperConsensus interface {
  11
  12         // Best chain return the chain containing the justified checkpoint of the largest height
  13         BestChain() (uint64, bc.Hash)
  14
  15         // LastFinalized return the block height and block hash which is finalized ast last
  16         LastFinalized() (uint64, bc.Hash)
  17
  18         // AuthVerification verify whether the Verification is legal.
  19         AuthVerification(v *Verification) error
  20
  21         // ApplyBlock apply block to the consensus module
  22         ApplyBlock(block *types.Block) (*Verification, error)
  23
  24         // Validators return the validators by specified block hash
  25         Validators(blockHash *bc.Hash) ([]*state.Validator, error)
  26 }