cbft

package
v0.7.6 Latest Latest
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 Go to latest Published: Jan 14, 2020 License: GPL-3.0 Imports: 51 Imported by: 0

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Index

Constants

This section is empty.

Variables

This section is empty.

Functions

func CreateBackend 

func CreateBackend(engine *Cbft, nodes []params.CbftNode) (*core.BlockChain, *core.BlockChainCache, *core.TxPool, consensus.Agency)

CreateBackend returns a new Backend for testing.

func CreateValidatorBackend 

func CreateValidatorBackend(engine *Cbft, nodes []params.CbftNode) (*core.BlockChain, *core.BlockChainCache, *core.TxPool, consensus.Agency)

CreateValidatorBackend returns a new ValidatorBackend for testing.

func GenerateCbftNode 

func GenerateCbftNode(num int) ([]*ecdsa.PrivateKey, []*bls.SecretKey, []params.CbftNode)

GenerateCbftNode returns a list of CbftNode for testing.

func GenerateKeys 

func GenerateKeys(num int) ([]*ecdsa.PrivateKey, []*bls.SecretKey)

GenerateKeys returns the public and private key pair for testing.

func NewBlock 

func NewBlock(parent common.Hash, number uint64) *types.Block

NewBlock returns a new block for testing.

func NewBlockWithSign 

func NewBlockWithSign(parent common.Hash, number uint64, node *TestCBFT) *types.Block

NewBlock returns a new block for testing.

func NewEngineManager 

func NewEngineManager(cbfts []*TestCBFT) ([]*network.EngineManager, []discover.NodeID)

NewEngineManager returns a list of EngineManager and NodeID.

Types

type API 

type API interface {
	Status() *Status
	Evidences() string
	GetPrepareQC(number uint64) *types.QuorumCert
	GetSchnorrNIZKProve() (*bls.SchnorrProof, error)
}

API defines an exposed API function interface.

type Bridge 

type Bridge interface {
	UpdateChainState(qcState, lockState, commitState *protocols.State)
	ConfirmViewChange(epoch, viewNumber uint64, block *types.Block, qc *ctypes.QuorumCert, viewChangeQC *ctypes.ViewChangeQC)
	SendViewChange(view *protocols.ViewChange)
	SendPrepareBlock(pb *protocols.PrepareBlock)
	SendPrepareVote(block *types.Block, vote *protocols.PrepareVote)
	GetViewChangeQC(epoch uint64, viewNumber uint64) (*ctypes.ViewChangeQC, error)

	Close()
}

Bridge encapsulates functions required to update consensus state and consensus msg. As a bridge layer for cbft and wal.

func NewBridge 

func NewBridge(ctx *node.ServiceContext, cbft *Cbft) (Bridge, error)

NewBridge creates a new Bridge to update consensus state and consensus msg.

type Cbft 

type Cbft struct {
	// contains filtered or unexported fields
}

Cbft is the core structure of the consensus engine and is responsible for handling consensus logic.

func CreateCBFT 

func CreateCBFT(pk *ecdsa.PrivateKey, sk *bls.SecretKey, period uint64, amount uint32) *Cbft

CreateCBFT returns a new CBFT for testing.

func New 

func New(sysConfig *params.CbftConfig, optConfig *ctypes.OptionsConfig, eventMux *event.TypeMux, ctx *node.ServiceContext) *Cbft

New returns a new CBFT.

func (*Cbft) APIs 

func (cbft *Cbft) APIs(chain consensus.ChainReader) []rpc.API

APIs returns a list of APIs provided by the consensus engine.

func (*Cbft) Author 

func (cbft *Cbft) Author(header *types.Header) (common.Address, error)

Author returns the current node's Author.

func (*Cbft) AvgLatency 

func (cbft *Cbft) AvgLatency() time.Duration

AvgLatency returns the average delay time of the specified node.

The average is the average delay between the current node and all consensus nodes. Return value unit: milliseconds.

func (*Cbft) BlockExists 

func (cbft *Cbft) BlockExists(blockNumber uint64, blockHash common.Hash) error

BlockExists is used to query whether the specified block exists in this node.

func (*Cbft) CalcBlockDeadline 

func (cbft *Cbft) CalcBlockDeadline(timePoint time.Time) time.Time

CalcBlockDeadline return the deadline of the block.

func (*Cbft) CalcNextBlockTime 

func (cbft *Cbft) CalcNextBlockTime(blockTime time.Time) time.Time

CalcNextBlockTime returns the deadline of the next block.

func (*Cbft) Close 

func (cbft *Cbft) Close() error

Close turns off the consensus engine.

func (*Cbft) Config 

func (cbft *Cbft) Config() *ctypes.Config

Config returns the configuration information of the consensus engine.

func (*Cbft) ConsensusNodes 

func (cbft *Cbft) ConsensusNodes() ([]discover.NodeID, error)

ConsensusNodes returns to the list of consensus nodes.

func (*Cbft) CurrentBlock 

func (cbft *Cbft) CurrentBlock() *types.Block

CurrentBlock get the current lock block.

func (*Cbft) DecodeExtra 

func (cbft *Cbft) DecodeExtra(extra []byte) (common.Hash, uint64, error)

func (*Cbft) DefaultAvgLatency 

func (cbft *Cbft) DefaultAvgLatency() time.Duration

DefaultAvgLatency returns the avg latency of default.

func (*Cbft) Evidences 

func (cbft *Cbft) Evidences() string

Evidences implements functions in API.

func (*Cbft) FastSyncCommitHead 

func (cbft *Cbft) FastSyncCommitHead(block *types.Block) error

FastSyncCommitHead processes logic that performs fast synchronization.

func (*Cbft) Finalize 

func (cbft *Cbft) Finalize(chain consensus.ChainReader, header *types.Header, state *state.StateDB, txs []*types.Transaction, receipts []*types.Receipt) (*types.Block, error)

Finalize implements consensus.Engine, no block rewards given, and returns the final block.

func (*Cbft) GetBlock 

func (cbft *Cbft) GetBlock(hash common.Hash, number uint64) *types.Block

GetBlock returns the block corresponding to the specified number and hash.

func (*Cbft) GetBlockByHash 

func (cbft *Cbft) GetBlockByHash(hash common.Hash) *types.Block

GetBlockByHash get the specified block by hash.

func (*Cbft) GetBlockWithoutLock 

func (cbft *Cbft) GetBlockWithoutLock(hash common.Hash, number uint64) *types.Block

GetBlockWithoutLock returns the block corresponding to the specified number and hash.

func (*Cbft) GetPrepareQC 

func (cbft *Cbft) GetPrepareQC(number uint64) *ctypes.QuorumCert

GetPrepareQC returns the QC data of the specified block height.

func (*Cbft) GetSchnorrNIZKProve 

func (cbft *Cbft) GetSchnorrNIZKProve() (*bls.SchnorrProof, error)

func (*Cbft) HasBlock 

func (cbft *Cbft) HasBlock(hash common.Hash, number uint64) bool

HasBlock check if the specified block exists in block tree.

func (*Cbft) HighestCommitBlockBn 

func (cbft *Cbft) HighestCommitBlockBn() (uint64, common.Hash)

HighestCommitBlockBn returns the highest submitted block number of the current node.

func (*Cbft) HighestLockBlockBn 

func (cbft *Cbft) HighestLockBlockBn() (uint64, common.Hash)

HighestLockBlockBn returns the highest locked block number of the current node.

func (*Cbft) HighestQCBlockBn 

func (cbft *Cbft) HighestQCBlockBn() (uint64, common.Hash)

HighestQCBlockBn return the highest QC block number of the current node.

func (*Cbft) InsertChain 

func (cbft *Cbft) InsertChain(block *types.Block) error

InsertChain is used to insert the block into the chain.

func (*Cbft) IsConsensusNode 

func (cbft *Cbft) IsConsensusNode() bool

IsConsensusNode returns whether the current node is a consensus node.

func (*Cbft) IsSignedBySelf 

func (cbft *Cbft) IsSignedBySelf(sealHash common.Hash, header *types.Header) bool

IsSignedBySelf returns the verification result , and the result is to determine whether the block information is the signature of the current node.

func (*Cbft) LatestStatus 

func (cbft *Cbft) LatestStatus() (v *protocols.GetLatestStatus)

LatestStatus returns latest status.

func (*Cbft) LoadWal 

func (cbft *Cbft) LoadWal() (err error)

LoadWal tries to recover consensus state and view msg from the wal.

func (*Cbft) MissingPrepareVote 

func (cbft *Cbft) MissingPrepareVote() (v *protocols.GetPrepareVote, err error)

MissingPrepareVote returns missing vote.

func (*Cbft) MissingViewChangeNodes 

func (cbft *Cbft) MissingViewChangeNodes() (v *protocols.GetViewChange, err error)

MissingViewChangeNodes returns the node ID of the missing vote.

Notes: Use the channel to complete serial execution to prevent concurrency.

func (*Cbft) NextBaseBlock 

func (cbft *Cbft) NextBaseBlock() *types.Block

NextBaseBlock is used to calculate the next block.

func (*Cbft) NodeID 

func (cbft *Cbft) NodeID() discover.NodeID

NodeID returns the ID value of the current node

func (*Cbft) OnBlockQuorumCert 

func (cbft *Cbft) OnBlockQuorumCert(id string, msg *protocols.BlockQuorumCert) error

OnBlockQuorumCert handles the message type of BlockQuorumCertMsg.

func (*Cbft) OnCommitError 

func (cbft *Cbft) OnCommitError(err error)

Asynchronous processing of errors generated by the submission block

func (*Cbft) OnGetBlockQuorumCert 

func (cbft *Cbft) OnGetBlockQuorumCert(id string, msg *protocols.GetBlockQuorumCert) error

OnGetBlockQuorumCert handles the message type of GetBlockQuorumCertMsg.

func (*Cbft) OnGetLatestStatus 

func (cbft *Cbft) OnGetLatestStatus(id string, msg *protocols.GetLatestStatus) error

OnGetLatestStatus hands GetLatestStatus messages.

main logic: 1.Compare the blockNumber of the sending node with the local node, and if the blockNumber of local node is larger then reply LatestStatus message, the message contains the status information of the local node.

func (*Cbft) OnGetPrepareBlock 

func (cbft *Cbft) OnGetPrepareBlock(id string, msg *protocols.GetPrepareBlock) error

OnGetPrepareBlock handles the message type of GetPrepareBlockMsg.

func (*Cbft) OnGetPrepareVote 

func (cbft *Cbft) OnGetPrepareVote(id string, msg *protocols.GetPrepareVote) error

OnGetPrepareVote is responsible for processing the business logic of the GetPrepareVote message. It will synchronously return a PrepareVotes message to the sender.

func (*Cbft) OnGetQCBlockList 

func (cbft *Cbft) OnGetQCBlockList(id string, msg *protocols.GetQCBlockList) error

OnGetQCBlockList handles the message type of GetQCBlockListMsg.

func (*Cbft) OnGetViewChange 

func (cbft *Cbft) OnGetViewChange(id string, msg *protocols.GetViewChange) error

OnGetViewChange responds to nodes that require viewChange.

The Epoch and viewNumber of viewChange must be consistent with the state of the current node.

func (*Cbft) OnInsertQCBlock 

func (cbft *Cbft) OnInsertQCBlock(blocks []*types.Block, qcs []*ctypes.QuorumCert) error

OnInsertQCBlock performs security rule verification, view switching.

func (*Cbft) OnLatestStatus 

func (cbft *Cbft) OnLatestStatus(id string, msg *protocols.LatestStatus) error

OnLatestStatus is used to process LatestStatus messages that received from peer.

func (*Cbft) OnPong 

func (cbft *Cbft) OnPong(nodeID string, netLatency int64) error

OnPong is used to receive the average delay time.

func (*Cbft) OnPrepareBlock 

func (cbft *Cbft) OnPrepareBlock(id string, msg *protocols.PrepareBlock) error

OnPrepareBlock performs security rule verification，store in blockTree, Whether to start synchronization

func (*Cbft) OnPrepareBlockHash 

func (cbft *Cbft) OnPrepareBlockHash(id string, msg *protocols.PrepareBlockHash) error

OnPrepareBlockHash responsible for handling PrepareBlockHash message.

Note: After receiving the PrepareBlockHash message, it is determined whether the block information exists locally. If not, send a network request to get the block data.

func (*Cbft) OnPrepareVote 

func (cbft *Cbft) OnPrepareVote(id string, msg *protocols.PrepareVote) error

OnPrepareVote perform security rule verification，store in blockTree, Whether to start synchronization

func (*Cbft) OnPrepareVotes 

func (cbft *Cbft) OnPrepareVotes(id string, msg *protocols.PrepareVotes) error

OnPrepareVotes handling response from GetPrepareVote response.

func (*Cbft) OnSeal 

func (cbft *Cbft) OnSeal(block *types.Block, results chan<- *types.Block, stop <-chan struct{})

OnSeal is used to process the blocks that have already been generated.

func (*Cbft) OnShouldSeal 

func (cbft *Cbft) OnShouldSeal(result chan error)

OnShouldSeal determines whether the current condition of the block is satisfied.

func (*Cbft) OnViewChange 

func (cbft *Cbft) OnViewChange(id string, msg *protocols.ViewChange) error

OnViewChange performs security rule verification, view switching.

func (*Cbft) OnViewChangeQuorumCert 

func (cbft *Cbft) OnViewChangeQuorumCert(id string, msg *protocols.ViewChangeQuorumCert) error

OnViewChangeQuorumCert handles the message type of ViewChangeQuorumCertMsg.

func (*Cbft) OnViewChanges 

func (cbft *Cbft) OnViewChanges(id string, msg *protocols.ViewChanges) error

OnViewChanges handles the message type of ViewChangesMsg.

func (*Cbft) OnViewTimeout 

func (cbft *Cbft) OnViewTimeout()

OnViewTimeout performs timeout logic for view.

func (*Cbft) Pause 

func (cbft *Cbft) Pause()

func (*Cbft) Prepare 

func (cbft *Cbft) Prepare(chain consensus.ChainReader, header *types.Header) error

Prepare implements consensus.Engine, preparing all the consensus fields of the header of running the transactions on top.

func (*Cbft) Protocols 

func (cbft *Cbft) Protocols() []p2p.Protocol

Protocols return consensus engine to provide protocol information.

func (*Cbft) ReceiveMessage 

func (cbft *Cbft) ReceiveMessage(msg *ctypes.MsgInfo) error

ReceiveMessage Entrance: The messages related to the consensus are entered from here. The message sent from the peer node is sent to the CBFT message queue and there is a loop that will distribute the incoming message.

func (*Cbft) ReceiveSyncMsg 

func (cbft *Cbft) ReceiveSyncMsg(msg *ctypes.MsgInfo) error

ReceiveSyncMsg is used to receive messages that are synchronized from other nodes.

Possible message types are: 

PrepareBlockVotesMsg/GetLatestStatusMsg/LatestStatusMsg/

func (*Cbft) Resume 

func (cbft *Cbft) Resume()

func (*Cbft) Seal 

func (cbft *Cbft) Seal(chain consensus.ChainReader, block *types.Block, results chan<- *types.Block, stop <-chan struct{}) error

Seal is used to generate a block, and block data is passed to the execution channel.

func (*Cbft) SealHash 

func (cbft *Cbft) SealHash(header *types.Header) common.Hash

SealHash returns the hash of a block prior to it being sealed.

func (*Cbft) ShouldSeal 

func (cbft *Cbft) ShouldSeal(curTime time.Time) (bool, error)

ShouldSeal check if we can seal block.

func (*Cbft) Start 

func (cbft *Cbft) Start(chain consensus.ChainReader, blockCacheWriter consensus.BlockCacheWriter, txPool consensus.TxPoolReset, agency consensus.Agency) error

Start starts consensus engine.

func (*Cbft) Status 

func (cbft *Cbft) Status() *Status

Status returns the status data of the consensus engine.

func (*Cbft) SyncBlockQuorumCert 

func (cbft *Cbft) SyncBlockQuorumCert(id string, blockNumber uint64, blockHash common.Hash, blockIndex uint32)

func (*Cbft) SyncPrepareBlock 

func (cbft *Cbft) SyncPrepareBlock(id string, epoch uint64, viewNumber uint64, blockIndex uint32)

func (*Cbft) TracingSwitch 

func (cbft *Cbft) TracingSwitch(flag int8)

TracingSwitch will be abandoned in the future.

func (*Cbft) TrySetHighestQCBlock 

func (cbft *Cbft) TrySetHighestQCBlock(block *types.Block)

func (*Cbft) VerifyHeader 

func (cbft *Cbft) VerifyHeader(chain consensus.ChainReader, header *types.Header, seal bool) error

VerifyHeader verify the validity of the block header.

func (*Cbft) VerifyHeaders 

func (cbft *Cbft) VerifyHeaders(chain consensus.ChainReader, headers []*types.Header, seals []bool) (chan<- struct{}, <-chan error)

VerifyHeaders is used to verify the validity of block headers in batch.

func (*Cbft) VerifySeal 

func (cbft *Cbft) VerifySeal(chain consensus.ChainReader, header *types.Header) error

VerifySeal implements consensus.Engine, checking whether the signature contained in the header satisfies the consensus protocol requirements.

type HandleError 

type HandleError interface {
	error
	AuthFailed() bool
}

type PublicConsensusAPI 

type PublicConsensusAPI struct {
	// contains filtered or unexported fields
}

PublicConsensusAPI provides an API to access the PlatON blockchain. It offers only methods that operate on public data that is freely available to anyone.

func NewPublicConsensusAPI 

func NewPublicConsensusAPI(engine API) *PublicConsensusAPI

NewPublicConsensusAPI creates a new PlatON blockchain API.

func (*PublicConsensusAPI) ConsensusStatus 

func (s *PublicConsensusAPI) ConsensusStatus() *Status

ConsensusStatus returns the status data of the consensus engine.

func (*PublicConsensusAPI) Evidences 

func (s *PublicConsensusAPI) Evidences() string

Evidences returns the relevant data of the verification.

func (*PublicConsensusAPI) GetPrepareQC 

func (s *PublicConsensusAPI) GetPrepareQC(number uint64) *types.QuorumCert

GetPrepareQC returns the QC certificate corresponding to the blockNumber.

func (*PublicConsensusAPI) GetSchnorrNIZKProve 

func (s *PublicConsensusAPI) GetSchnorrNIZKProve() string

type Status 

type Status struct {
	Tree      *types.BlockTree `json:"blockTree"`
	State     *state.ViewState `json:"state"`
	Validator bool             `json:"validator"`
}

type TestCBFT 

type TestCBFT struct {
	// contains filtered or unexported fields
}

TestCBFT for testing.

func Mock4NodePipe 

func Mock4NodePipe(start bool) []*TestCBFT

Mock4NodePipe returns a list of TestCBFT for testing.

func Mock4NodePipe2 

func Mock4NodePipe2(start bool) ([]*TestCBFT, []params.CbftNode)

Mock4NodePipe returns a list of TestCBFT for testing.

func MockNode 

func MockNode(pk *ecdsa.PrivateKey, sk *bls.SecretKey, nodes []params.CbftNode, period uint64, amount uint32) *TestCBFT

MockNode returns a new TestCBFT for testing.

func MockValidator 

func MockValidator(pk *ecdsa.PrivateKey, sk *bls.SecretKey, nodes []params.CbftNode, period uint64, amount uint32) *TestCBFT

MockValidator returns a new TestCBFT for testing.

func (*TestCBFT) Start 

func (t *TestCBFT) Start() error

Start turns on the cbft for testing.

Source Files

View all Source files

Directories

Path Synopsis
Package evidence implements recording duplicate blocks and votes for cbft consensus.
 Package evidence implements recording duplicate blocks and votes for cbft consensus.
Package network implements a concrete consensus engines.
 Package network implements a concrete consensus engines.
Package wal implements the similar write-ahead logging for cbft consensus.
 Package wal implements the similar write-ahead logging for cbft consensus.

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