consensus

package
v1.0.1 Latest Latest
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 Go to latest Published: Jul 9, 2021 License: Apache-2.0, MIT Imports: 51 Imported by: 0

Documentation

Index

Constants

View Source 
const AllowableClockDriftSecs = uint64(1)

Variables

View Source 
var (
	ErrExpensiveFork = errors.New("refusing explicit call due to state fork at epoch")
	// ErrStateRootMismatch is returned when the computed state root doesn't match the expected result.
	ErrStateRootMismatch = errors.New("blocks state root does not match computed result")
	// ErrUnorderedTipSets is returned when weight and minticket are the same between two tipsets.
	ErrUnorderedTipSets = errors.New("trying to order two identical tipsets")
	// ErrReceiptRootMismatch is returned when the block's receipt root doesn't match the receipt root computed for the parent tipset.
	ErrReceiptRootMismatch = errors.New("blocks receipt root does not match parent tip set")
)
View Source 
var ErrInsufficientPower = errors.New("incoming block's miner does not have minimum power")
View Source 
var ErrSoftFailure = errors.New("soft validation failure")
View Source 
var ErrTemporal = errors.New("temporal error")

Functions

func MakeFakeTicketForTest 

func MakeFakeTicketForTest() types.Ticket

MakeFakeTicketForTest creates a fake ticket

func MakeFakeVRFProofForTest 

func MakeFakeVRFProofForTest() []byte

MakeFakeVRFProofForTest creates a fake election proof

func RequireNewTipSet 

func RequireNewTipSet(require *require.Assertions, blks ...*types.BlockHeader) *types.TipSet

RequireNewTipSet instantiates and returns a new tipset of the given blocks and requires that the setup validation succeed.

func VerifyElectionPoStVRF 

func VerifyElectionPoStVRF(ctx context.Context, worker address.Address, rand []byte, evrf []byte) error

VerifyElectionPoStVRF verify election post value in block

func VerifyVRF 

func VerifyVRF(ctx context.Context, worker address.Address, vrfBase, vrfproof []byte) error

VerifyVRF checkout block vrf value

Types

type ApplicationResult 

type ApplicationResult struct {
	Receipt        *types.MessageReceipt
	ExecutionError error
}

ApplicationResult contains the result of successfully applying one message. ExecutionError might be set and the message can still be applied successfully. See ApplyMessage() for details.

type ApplyMessageResult 

type ApplyMessageResult struct {
	ApplicationResult        // Application-level result, if error is nil.
	Failure            error // Failure to apply the message
	FailureIsPermanent bool  // Whether failure is permanent, has no chance of succeeding later.
}

ApplyMessageResult is the result of applying a single message.

type BlockValidator 

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

BlockValidator used to validate a block is ok or not

func NewBlockValidator added in v0.9.1 

func NewBlockValidator(tv TicketValidator,
	bstore blockstore.Blockstore,
	messageStore *chain.MessageStore,
	drand beacon.Schedule,
	cstore cbor.IpldStore,
	proofVerifier ProofVerifier,
	state StateViewer,
	chainState chainReader,
	chainSelector *ChainSelector,
	fork fork.IFork,
	config *config.NetworkParamsConfig,
	gasPirceSchedule *gas.PricesSchedule) *BlockValidator

NewBlockValidator create a new block validator

func (*BlockValidator) MinerEligibleToMine added in v0.9.1 

func (bv *BlockValidator) MinerEligibleToMine(ctx context.Context, addr address.Address, parentStateRoot cid.Cid, parentHeight abi.ChainEpoch, lookbackTS *types.TipSet) (bool, error)

func (*BlockValidator) ValidateBlockBeacon added in v0.9.1 

func (bv *BlockValidator) ValidateBlockBeacon(blk *types.BlockHeader, parentEpoch abi.ChainEpoch, prevEntry *types.BeaconEntry) error

func (*BlockValidator) ValidateBlockMsg added in v0.9.1 

func (bv *BlockValidator) ValidateBlockMsg(ctx context.Context, blk *types.BlockMsg) pubsub.ValidationResult

ValidateBlockMsg used to validate block from incoming. check message, signature , wincount. if give a reject error. local node reject this block. if give a ignore error. recheck this block in latest notify

func (*BlockValidator) ValidateBlockWinner added in v0.9.1 

func (bv *BlockValidator) ValidateBlockWinner(ctx context.Context, waddr address.Address, lbTS *types.TipSet, lbRoot cid.Cid, baseTS *types.TipSet, baseRoot cid.Cid,
	blk *types.BlockHeader, prevEntry *types.BeaconEntry) error

func (*BlockValidator) ValidateFullBlock added in v0.9.1 

func (bv *BlockValidator) ValidateFullBlock(ctx context.Context, blk *types.BlockHeader) (err error)

ValidateFullBlock should match up with 'Semantical Validation' in validation.md in the spec

func (*BlockValidator) ValidateMsgMeta added in v0.9.1 

func (bv *BlockValidator) ValidateMsgMeta(fblk *types.FullBlock) error

ValidateMsgMeta performs structural and content hash validation of the messages within this block. If validation passes, it stores the messages in the underlying IPLD block store.

func (*BlockValidator) VerifyWinningPoStProof added in v0.9.1 

func (bv *BlockValidator) VerifyWinningPoStProof(ctx context.Context, nv network.Version, blk *types.BlockHeader, prevBeacon *types.BeaconEntry, lbst cid.Cid) error

type ChainRandomness 

type ChainRandomness interface {
	GetChainRandomness(ctx context.Context, tsk types.TipSetKey, pers acrypto.DomainSeparationTag, round abi.ChainEpoch, entropy []byte, lookback bool) ([]byte, error)
	GetBeaconRandomness(ctx context.Context, tsk types.TipSetKey, personalization acrypto.DomainSeparationTag, randEpoch abi.ChainEpoch, entropy []byte, lookback bool) (abi.Randomness, error)
}

ChainRandomness define randomness method in filecoin

type ChainSampler 

type ChainSampler interface {
	SampleTicket(ctx context.Context, head types.TipSetKey, epoch abi.ChainEpoch, lookback bool) (types.Ticket, error)
}

type ChainSelector 

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

ChainSelector weighs and compares chains.

func NewChainSelector 

func NewChainSelector(cs cbor.IpldStore, state StateViewer) *ChainSelector

NewChainSelector is the constructor for Chain selection module.

func (*ChainSelector) IsHeavier 

func (c *ChainSelector) IsHeavier(ctx context.Context, a, b *types.TipSet) (bool, error)

IsHeavier returns true if tipset a is heavier than tipset b, and false vice versa. In the rare case where two tipsets have the same weight ties are broken by taking the tipset with more blocks.

func (*ChainSelector) Weight 

func (c *ChainSelector) Weight(ctx context.Context, ts *types.TipSet) (fbig.Int, error)

Weight returns the EC weight of this TipSet as a filecoin big int.

type DefaultMessageSyntaxValidator 

type DefaultMessageSyntaxValidator struct{}

DefaultMessageSyntaxValidator checks basic conditions independent of current state

func NewMessageSyntaxValidator 

func NewMessageSyntaxValidator() *DefaultMessageSyntaxValidator

func (*DefaultMessageSyntaxValidator) ValidateSignedMessageSyntax 

func (v *DefaultMessageSyntaxValidator) ValidateSignedMessageSyntax(ctx context.Context, smsg *types.SignedMessage) error

ValidateSignedMessageSyntax validates signed message syntax and state-independent invariants. Used for incoming messages over pubsub and secp messages included in blocks.

func (*DefaultMessageSyntaxValidator) ValidateUnsignedMessageSyntax 

func (v *DefaultMessageSyntaxValidator) ValidateUnsignedMessageSyntax(ctx context.Context, msg *types.UnsignedMessage) error

ValidateUnsignedMessageSyntax validates unisigned message syntax and state-independent invariants. Used for bls messages included in blocks.

type DefaultProcessor 

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

DefaultProcessor handles all block processing.

func NewConfiguredProcessor 

func NewConfiguredProcessor(actors vm.ActorCodeLoader, syscalls vm.SyscallsImpl) *DefaultProcessor

NewConfiguredProcessor creates a default processor with custom validation and rewards.

func NewDefaultProcessor 

func NewDefaultProcessor(syscalls vm.SyscallsImpl) *DefaultProcessor

NewDefaultProcessor creates a default processor from the given state tree and vms.

func (*DefaultProcessor) ProcessImplicitMessage 

func (p *DefaultProcessor) ProcessImplicitMessage(ctx context.Context, msg *types.UnsignedMessage, vmOption vm.VmOption) (ret *vm.Ret, err error)

ProcessImplicitMessage compute the state of specify message but this functions skip value, gas,check

func (*DefaultProcessor) ProcessTipSet 

func (p *DefaultProcessor) ProcessTipSet(ctx context.Context,
	parent, ts *types.TipSet,
	msgs []types.BlockMessagesInfo,
	vmOption vm.VmOption,
) (cid.Cid, []types.MessageReceipt, error)

ProcessTipSet computes the state transition specified by the messages in all blocks in a TipSet.

type DefaultStateViewer 

type DefaultStateViewer struct {
	*appstate.Viewer
}

DefaultStateViewer a state viewer to the power state view interface.

func AsDefaultStateViewer 

func AsDefaultStateViewer(v *appstate.Viewer) DefaultStateViewer

Todo Delete view just use state.Viewer AsDefaultStateViewer adapts a state viewer to a power state viewer.

func (*DefaultStateViewer) FaultStateView 

func (v *DefaultStateViewer) FaultStateView(root cid.Cid) appstate.FaultStateView

FaultStateView returns a fault state view for a state root.

func (*DefaultStateViewer) PowerStateView 

func (v *DefaultStateViewer) PowerStateView(root cid.Cid) appstate.PowerStateView

PowerStateView returns a power state view for a state root.

type Expected 

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

Expected implements expected consensus.

func NewExpected 

func NewExpected(cs cbor.IpldStore,
	bs blockstore.Blockstore,
	bt time.Duration,
	chainState chainReader,
	rnd ChainRandomness,
	messageStore *chain.MessageStore,
	fork fork.IFork,
	config *config.NetworkParamsConfig,
	gasPirceSchedule *gas.PricesSchedule,
	blockValidator *BlockValidator,
	syscalls vm.SyscallsImpl,
) *Expected

NewExpected is the constructor for the Expected consenus.Protocol module.

func (*Expected) Call 

func (c *Expected) Call(ctx context.Context, msg *types.UnsignedMessage, ts *types.TipSet) (*vm.Ret, error)

Call used for api invoke to compute a msg base on specify tipset, if the tipset is null, use latest tipset in db

func (*Expected) CallWithGas 

func (c *Expected) CallWithGas(ctx context.Context, msg *types.UnsignedMessage, priorMsgs []types.ChainMsg, ts *types.TipSet) (*vm.Ret, error)

CallWithGas used to estimate message gaslimit, for each incoming message ,should execute after priorMsg in mpool

func (*Expected) RunStateTransition 

func (c *Expected) RunStateTransition(ctx context.Context,
	ts *types.TipSet,
	parentStateRoot cid.Cid,
) (cid.Cid, cid.Cid, error)

RunStateTransition applies the messages in a tipset to a state, and persists that new state. It errors if the tipset was not mined according to the EC rules, or if any of the messages in the tipset results in an error.

type FailingTicketValidator 

type FailingTicketValidator struct{}

FailingTicketValidator marks all tickets as invalid

func (*FailingTicketValidator) IsValidTicket 

func (ftv *FailingTicketValidator) IsValidTicket(ctx context.Context, base types.TipSetKey, entry *types.BeaconEntry, newPeriod bool,
	epoch abi.ChainEpoch, miner address.Address, workerSigner address.Address, ticket types.Ticket) error

IsValidTicket always returns false

type FakeChainRandomness 

type FakeChainRandomness struct {
	Seed uint
}

FakeChainRandomness generates deterministic values that are a function of a seed and the provided tag, epoch, and entropy (but *not* the Chain Head key).

func (*FakeChainRandomness) GetBeaconRandomness added in v0.9.7 

func (s *FakeChainRandomness) GetBeaconRandomness(ctx context.Context, tsk types.TipSetKey, personalization acrypto.DomainSeparationTag, randEpoch abi.ChainEpoch, entropy []byte, _ bool) (abi.Randomness, error)

func (*FakeChainRandomness) GetChainRandomness added in v0.9.7 

func (s *FakeChainRandomness) GetChainRandomness(ctx context.Context, tsk types.TipSetKey, pers acrypto.DomainSeparationTag, round abi.ChainEpoch, entropy []byte, _ bool) ([]byte, error)

type FakeConsensusStateViewer 

type FakeConsensusStateViewer struct {
	Views map[cid.Cid]*state.FakeStateView
}

FakeConsensusStateViewer is a fake power state viewer.

func (*FakeConsensusStateViewer) FaultStateView 

func (f *FakeConsensusStateViewer) FaultStateView(root cid.Cid) state.FaultStateView

FaultStateView returns the state view for a root.

func (*FakeConsensusStateViewer) PowerStateView 

func (f *FakeConsensusStateViewer) PowerStateView(root cid.Cid) state.PowerStateView

PowerStateView returns the state view for a root.

type FakeMessageValidator 

type FakeMessageValidator struct{}

FakeMessageValidator is a validator that doesn't validate to simplify message creation in tests.

func (*FakeMessageValidator) ValidateSignedMessageSyntax 

func (mv *FakeMessageValidator) ValidateSignedMessageSyntax(ctx context.Context, smsg *types.SignedMessage) error

func (*FakeMessageValidator) ValidateUnsignedMessageSyntax 

func (mv *FakeMessageValidator) ValidateUnsignedMessageSyntax(ctx context.Context, msg *types.UnsignedMessage) error

type FakeSampler 

type FakeSampler struct {
	Seed uint
}

func (*FakeSampler) SampleTicket 

func (s *FakeSampler) SampleTicket(_ context.Context, _ types.TipSetKey, epoch abi.ChainEpoch, _ bool) (types.Ticket, error)

type FakeTicketMachine 

type FakeTicketMachine struct{}

FakeTicketMachine generates fake tickets and verifies all tickets

func (*FakeTicketMachine) IsValidTicket 

func (ftm *FakeTicketMachine) IsValidTicket(ctx context.Context, base types.TipSetKey, entry *types.BeaconEntry, newPeriod bool,
	epoch abi.ChainEpoch, miner address.Address, workerSigner address.Address, ticket types.Ticket) error

IsValidTicket always returns true

func (*FakeTicketMachine) MakeTicket 

func (ftm *FakeTicketMachine) MakeTicket(ctx context.Context, base types.TipSetKey, epoch abi.ChainEpoch, miner address.Address, entry *types.BeaconEntry, newPeriod bool, worker address.Address, signer types.Signer) (types.Ticket, error)

MakeTicket returns a fake ticket

type HeadRandomness 

type HeadRandomness struct {
	Chain ChainRandomness
	Head  types.TipSetKey
}

A Chain randomness source with a fixed Head tipset key.

func (*HeadRandomness) GetBeaconRandomnessLookingBack added in v0.9.7 

func (h *HeadRandomness) GetBeaconRandomnessLookingBack(ctx context.Context, pers acrypto.DomainSeparationTag, round abi.ChainEpoch, entropy []byte) ([]byte, error)

func (*HeadRandomness) GetBeaconRandomnessLookingForward added in v0.9.7 

func (h *HeadRandomness) GetBeaconRandomnessLookingForward(ctx context.Context, pers acrypto.DomainSeparationTag, round abi.ChainEpoch, entropy []byte) ([]byte, error)

func (*HeadRandomness) GetChainRandomnessLookingBack added in v0.9.7 

func (h *HeadRandomness) GetChainRandomnessLookingBack(ctx context.Context, tag acrypto.DomainSeparationTag, epoch abi.ChainEpoch, entropy []byte) ([]byte, error)

func (*HeadRandomness) GetChainRandomnessLookingForward added in v0.9.7 

func (h *HeadRandomness) GetChainRandomnessLookingForward(ctx context.Context, tag acrypto.DomainSeparationTag, epoch abi.ChainEpoch, entropy []byte) ([]byte, error)

type MessageSignatureValidator 

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

MessageSignatureValidator validates message signatures

func NewMessageSignatureValidator 

func NewMessageSignatureValidator(api signatureValidatorAPI) *MessageSignatureValidator

func (*MessageSignatureValidator) Validate 

func (v *MessageSignatureValidator) Validate(ctx context.Context, smsg *types.SignedMessage) error

Validate validates the signed message signature. Errors probably mean the 

validation failed, but possibly indicate a failure to retrieve state.

type Processor 

type Processor interface {
	// ProcessTipSet processes all messages in a tip set.
	ProcessTipSet(context.Context, *types.TipSet, *types.TipSet, []types.BlockMessagesInfo, vm.VmOption) (cid.Cid, []types.MessageReceipt, error)
	ProcessImplicitMessage(context.Context, *types.UnsignedMessage, vm.VmOption) (*vm.Ret, error)
}

A Processor processes all the messages in a block or tip set.

type ProofVerifier 

type ProofVerifier interface {
	VerifySeal(info proof5.SealVerifyInfo) (bool, error)
	VerifyAggregateSeals(aggregate proof5.AggregateSealVerifyProofAndInfos) (bool, error)
	VerifyWinningPoSt(ctx context.Context, info proof5.WinningPoStVerifyInfo) (bool, error)
	VerifyWindowPoSt(ctx context.Context, info proof5.WindowPoStVerifyInfo) (bool, error)
	GenerateWinningPoStSectorChallenge(ctx context.Context, proofType abi.RegisteredPoStProof, minerID abi.ActorID, randomness abi.PoStRandomness, eligibleSectorCount uint64) ([]uint64, error)
}

Interface to PoSt verification, modify by force EPoStVerifier -> ProofVerifier

type Protocol 

type Protocol interface {
	// RunStateTransition returns the state root CID resulting from applying the input ts to the
	// prior `stateID`.  It returns an error if the transition is invalid.
	RunStateTransition(ctx context.Context, ts *types.TipSet, parentStateRoot cid.Cid) (root cid.Cid, receipt cid.Cid, err error)

	// Call compute message result of specify message
	Call(ctx context.Context, msg *types.UnsignedMessage, ts *types.TipSet) (*vm.Ret, error)

	// CallWithGas compute message result of specify message base on messages in mpool
	CallWithGas(ctx context.Context, msg *types.UnsignedMessage, priorMsgs []types.ChainMsg, ts *types.TipSet) (*vm.Ret, error)
}

Protocol is an interface defining a blockchain consensus protocol. The methods here were arrived at after significant work fitting consensus into the system and the implementation level. The method set is not necessarily the most theoretically obvious or pleasing and should not be considered finalized.

type SignFunc 

type SignFunc func(context.Context, address.Address, []byte) (*crypto.Signature, error)

SignFunc common interface for sign

type StateViewer 

type StateViewer interface {
	PowerStateView(root cid.Cid) appstate.PowerStateView
	FaultStateView(root cid.Cid) appstate.FaultStateView
}

StateViewer provides views into the Chain state.

type TestElectionPoster 

type TestElectionPoster struct{}

TestElectionPoster generates and verifies electoin PoSts

func (*TestElectionPoster) GenerateWinningPoSt 

func (ep *TestElectionPoster) GenerateWinningPoSt(ctx context.Context,
	minerID abi.ActorID,
	sectorInfo []builtin.SectorInfo,
	randomness abi.PoStRandomness) ([]builtin.PoStProof, error)

type TicketMachine 

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

TicketMachine uses a VRF and VDF to generate deterministic, unpredictable and time delayed tickets and validates these tickets.

func NewTicketMachine 

func NewTicketMachine(sampler ChainSampler, tipsetLoader tipsetLoader) *TicketMachine

func (TicketMachine) IsValidTicket 

func (tm TicketMachine) IsValidTicket(ctx context.Context, base types.TipSetKey, entry *types.BeaconEntry, bSmokeHeight bool,
	epoch abi.ChainEpoch, miner address.Address, workerSigner address.Address, ticket types.Ticket) error

IsValidTicket verifies that the ticket's proof of randomness is valid with respect to its parent.

func (TicketMachine) MakeTicket 

func (tm TicketMachine) MakeTicket(ctx context.Context, base types.TipSetKey, epoch abi.ChainEpoch, miner address.Address, entry *types.BeaconEntry, newPeriod bool, worker address.Address, signer types.Signer) (types.Ticket, error)

MakeTicket creates a new ticket from a Chain and target epoch by running a verifiable randomness function on the prior ticket.

type TicketValidator 

type TicketValidator interface {
	IsValidTicket(ctx context.Context, base types.TipSetKey, entry *types.BeaconEntry, newPeriod bool, epoch abi.ChainEpoch, miner address.Address, workerSigner address.Address, ticket types.Ticket) error
}

TicketValidator validates that an input ticket is valid.

Source Files

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