這段時間小編一直忙着找實習,現在開始接着分析了,不好意思讓大家久等了。好了,直接上乾貨。
consensus是blockchain中實現obc peer端一致性的插件,諸位請看
consensus
// Consenter用於從網絡接收消息
// 每一個consensus插件需要實現這個接口
type Consenter interface {
RecvMsg(msg *pb.OpenchainMessage, senderHandle *pb.PeerID) error
}
// Inquirer 用於獲取有關網絡網絡的驗證信息
type Inquirer interface {
GetNetworkInfo() (self *pb.PeerEndpoint, network []*pb.PeerEndpoint, err error)
GetNetworkHandles() (self *pb.PeerID, network []*pb.PeerID, err error)
}
// Communicator 用於發送消息給其他驗證端
type Communicator interface {
Broadcast(msg *pb.OpenchainMessage, peerType pb.PeerEndpoint_Type) error
Unicast(msg *pb.OpenchainMessage, receiverHandle *pb.PeerID) error
}
// SecurityUtils 用於訪問標誌/驗證crypto包中的方法
type SecurityUtils interface {
Sign(msg []byte) ([]byte, error)
Verify(peerID *pb.PeerID, signature []byte, message []byte) error
}
// ReadOnlyLedger 用於詢問區塊鏈
type ReadOnlyLedger interface {
GetBlock(id uint64) (block *pb.Block, err error)
GetCurrentStateHash() (stateHash []byte, err error)
GetBlockchainSize() (uint64, error)
}
// UtilLedger 包含詢問區塊鏈的附加的實用功能
type UtilLedger interface {
HashBlock(block *pb.Block) ([]byte, error)
VerifyBlockchain(start, finish uint64) (uint64, error)
}
// WritableLedger is 用戶更新轉移blockchain狀態過程
type WritableLedger interface {
PutBlock(blockNumber uint64, block *pb.Block) error
ApplyStateDelta(id interface{}, delta *statemgmt.StateDelta) error
CommitStateDelta(id interface{}) error
RollbackStateDelta(id interface{}) error
EmptyState() error
}
// Ledger is 一個不受限制的讀取、效用和更新的聯合
type Ledger interface {
ReadOnlyLedger
UtilLedger
WritableLedger
}
// Executor is 用於調用交易接口,有可能修改依託總賬
type Executor interface {
BeginTxBatch(id interface{}) error
ExecTxs(id interface{}, txs []*pb.Transaction) ([]byte, error)
CommitTxBatch(id interface{}, metadata []byte) (*pb.Block, error)
RollbackTxBatch(id interface{}) error
PreviewCommitTxBatch(id interface{}, metadata []byte) (*pb.Block, error)
}
// RemoteLedgers is 用於查詢blockchain的其他副本
type RemoteLedgers interface {
GetRemoteBlocks(replicaID *pb.PeerID, start, finish uint64) (<-chan *pb.SyncBlocks, error)
GetRemoteStateSnapshot(replicaID *pb.PeerID) (<-chan *pb.SyncStateSnapshot, error)
GetRemoteStateDeltas(replicaID *pb.PeerID, start, finish uint64) (<-chan *pb.SyncStateDeltas, error)
}
// LedgerStack 用作面向blockchain的活動接口,諸如執行交易,查詢和更新總賬
type LedgerStack interface {
Executor
Ledger
RemoteLedgers
}
// Stack 可用於consensus插件的一套面向堆棧的方法
type Stack interface {
Inquirer
Communicator
SecurityUtils
LedgerStack
}