babe

package
v0.7.0 Latest Latest
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 Go to latest Published: Nov 23, 2022 License: LGPL-3.0 Imports: 22 Imported by: 0

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Index

Constants

This section is empty.

Variables

View Source 
var (
	// ErrBadSlotClaim is returned when a slot claim is invalid
	ErrBadSlotClaim = errors.New("could not verify slot claim VRF proof")

	// ErrBadSecondarySlotClaim is returned when a slot claim is invalid
	ErrBadSecondarySlotClaim = errors.New("invalid secondary slot claim")

	// ErrBadSignature is returned when a seal is invalid
	ErrBadSignature = errors.New("could not verify signature")

	// ErrProducerEquivocated is returned when a block producer has produced conflicting blocks
	ErrProducerEquivocated = errors.New("block producer equivocated")

	// ErrNotAuthorized is returned when the node is not authorized to produce a block
	ErrNotAuthorized = errors.New("not authorized to produce block")

	// ErrNoBABEHeader is returned when there is no BABE header found for a block, specifically when calculating randomness
	ErrNoBABEHeader = errors.New("no BABE header found for block")

	// ErrVRFOutputOverThreshold is returned when the vrf output for a block is invalid
	ErrVRFOutputOverThreshold = errors.New("vrf output over threshold")

	// ErrInvalidBlockProducerIndex is returned when the producer of a block isn't in the authority set
	ErrInvalidBlockProducerIndex = errors.New("block producer is not in authority set")

	// ErrAuthorityAlreadyDisabled is returned when attempting to disabled an already-disabled authority
	ErrAuthorityAlreadyDisabled = errors.New("authority has already been disabled")

	// ErrAuthorityDisabled is returned when attempting to verify a block produced by a disabled authority
	ErrAuthorityDisabled = errors.New("authority has been disabled for the remaining slots in the epoch")

	// ErrNotAuthority is returned when trying to perform authority functions when not an authority
	ErrNotAuthority = errors.New("node is not an authority")

	// ErrThresholdOneIsZero is returned when one of or both parameters to CalculateThreshold is zero
	ErrThresholdOneIsZero = errors.New("numerator or denominator cannot be 0")
)

Functions

func CalculateThreshold added in v0.2.0 

func CalculateThreshold(C1, C2 uint64, numAuths int) (*scale.Uint128, error)

CalculateThreshold calculates the slot lottery threshold equation: threshold = 2^128 * (1 - (1-c)^(1/len(authorities)) see https://github.com/paritytech/substrate/blob/master/client/consensus/babe/src/authorship.rs#L44

Types

type AncientBirthBlock added in v0.7.0 

type AncientBirthBlock struct{}

AncientBirthBlock The transaction birth block is ancient

func (AncientBirthBlock) Index added in v0.7.0 

func (AncientBirthBlock) Index() uint

Index returns VDT index

type Authorities added in v0.3.0 

type Authorities []types.Authority

Authorities is an alias for []*types.Authority

func (Authorities) String added in v0.3.0 

func (d Authorities) String() string

String returns the Authorities as a formatted string

type BadMandatory added in v0.7.0 

type BadMandatory struct{}

BadMandatory An extrinsic with a Mandatory dispatch resulted in Error

func (BadMandatory) Index added in v0.7.0 

func (BadMandatory) Index() uint

Index returns VDT index

type BadOrigin added in v0.7.0 

type BadOrigin struct{}

BadOrigin A bad origin

func (BadOrigin) Index added in v0.7.0 

func (BadOrigin) Index() uint

Index returns VDT index

type BadProof added in v0.7.0 

type BadProof struct{}

BadProof General error to do with the transaction’s proofs (e.g. signature)

func (BadProof) Index added in v0.7.0 

func (BadProof) Index() uint

Index returns VDT index

type BlockBuilder added in v0.7.0 

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

BlockBuilder builds blocks.

func NewBlockBuilder added in v0.7.0 

func NewBlockBuilder(
	kp *sr25519.Keypair,
	ts TransactionState,
	bs BlockState,
	authidx uint32,
	preRuntimeDigest *types.PreRuntimeDigest,
) *BlockBuilder

NewBlockBuilder creates a new block builder.

type BlockImportHandler added in v0.7.0 

type BlockImportHandler interface {
	HandleBlockProduced(block *types.Block, state *rtstorage.TrieState) error
}

BlockImportHandler is the interface for the handler of new blocks

type BlockState 

type BlockState interface {
	BestBlockHash() common.Hash
	BestBlockHeader() (*types.Header, error)
	BestBlockNumber() (blockNumber uint, err error)
	BestBlock() (*types.Block, error)
	SubChain(start, end common.Hash) ([]common.Hash, error)
	AddBlock(*types.Block) error
	GetAllBlocksAtDepth(hash common.Hash) []common.Hash
	GetHeader(common.Hash) (*types.Header, error)
	GetBlockByNumber(blockNumber uint) (*types.Block, error)
	GetBlockByHash(common.Hash) (*types.Block, error)
	GetBlockHashesBySlot(slot uint64) (blockHashes []common.Hash, err error)
	GetArrivalTime(common.Hash) (time.Time, error)
	GenesisHash() common.Hash
	GetSlotForBlock(common.Hash) (uint64, error)
	GetFinalisedHeader(uint64, uint64) (*types.Header, error)
	IsDescendantOf(parent, child common.Hash) (bool, error)
	NumberIsFinalised(blockNumber uint) (bool, error)
	GetRuntime(blockHash common.Hash) (instance runtime.Instance, err error)
	StoreRuntime(common.Hash, runtime.Instance)
	ImportedBlockNotifierManager
}

BlockState interface for block state methods

type Builder added in v0.7.0 

type Builder struct{}

Builder struct to hold babe builder functions

func (Builder) NewServiceIFace added in v0.7.0 

func (Builder) NewServiceIFace(cfg *ServiceConfig) (ServiceIFace, error)

NewServiceIFace returns a new Babe Service using the provided VRF keys and runtime

type Call added in v0.7.0 

type Call struct{}

Call The call of the transaction is not expected

func (Call) Index added in v0.7.0 

func (Call) Index() uint

Index returns VDT index

type CannotLookup added in v0.7.0 

type CannotLookup struct{}

CannotLookup Failed to lookup some data

func (CannotLookup) Index added in v0.7.0 

func (CannotLookup) Index() uint

Index returns VDT index

type DigestHandler added in v0.7.0 

type DigestHandler interface {
	HandleDigests(*types.Header)
}

DigestHandler is the interface for the consensus digest handler

type DispatchOutcomeError added in v0.7.0 

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

A DispatchOutcomeError is outcome of dispatching the extrinsic

func (DispatchOutcomeError) Error added in v0.7.0 

func (e DispatchOutcomeError) Error() string

type EpochState added in v0.2.0 

type EpochState interface {
	GetEpochLength() (uint64, error)
	GetSlotDuration() (time.Duration, error)
	SetCurrentEpoch(epoch uint64) error
	GetCurrentEpoch() (uint64, error)
	SetEpochData(uint64, *types.EpochData) error

	GetEpochData(epoch uint64, header *types.Header) (*types.EpochData, error)
	GetConfigData(epoch uint64, header *types.Header) (*types.ConfigData, error)

	GetLatestConfigData() (*types.ConfigData, error)
	GetStartSlotForEpoch(epoch uint64) (uint64, error)
	GetEpochForBlock(header *types.Header) (uint64, error)
	SetFirstSlot(slot uint64) error
	GetLatestEpochData() (*types.EpochData, error)
	SkipVerify(*types.Header) (bool, error)
	GetEpochFromTime(time.Time) (uint64, error)
}

EpochState is the interface for epoch methods

type ExhaustsResources added in v0.7.0 

type ExhaustsResources struct{}

ExhaustsResources The transaction would exhaust the resources of current block

func (ExhaustsResources) Index added in v0.7.0 

func (ExhaustsResources) Index() uint

Index returns VDT index

type Future added in v0.7.0 

type Future struct{}

Future General error to do with the transaction not yet being valid (e.g. nonce too high)

func (Future) Index added in v0.7.0 

func (Future) Index() uint

Index returns VDT index

type ImportedBlockNotifierManager added in v0.7.0 

type ImportedBlockNotifierManager interface {
	GetImportedBlockNotifierChannel() chan *types.Block
	FreeImportedBlockNotifierChannel(ch chan *types.Block)
}

ImportedBlockNotifierManager is the interface for block notification channels

type InvalidCustom added in v0.7.0 

type InvalidCustom uint8

InvalidCustom Any other custom invalid validity that is not covered

func (InvalidCustom) Index added in v0.7.0 

func (InvalidCustom) Index() uint

Index returns VDT index

type MandatoryDispatch added in v0.7.0 

type MandatoryDispatch struct{}

MandatoryDispatch A transaction with a mandatory dispatch

func (MandatoryDispatch) Index added in v0.7.0 

func (MandatoryDispatch) Index() uint

Index returns VDT index

type Module added in v0.7.0 

type Module struct {
	Idx     uint8
	Err     uint8
	Message *string
}

Module A custom error in a module

func (Module) Index added in v0.7.0 

func (Module) Index() uint

Index returns VDT index

type NoUnsignedValidator added in v0.7.0 

type NoUnsignedValidator struct{}

NoUnsignedValidator No validator found for the given unsigned transaction

func (NoUnsignedValidator) Index added in v0.7.0 

func (NoUnsignedValidator) Index() uint

Index returns VDT index

type Other added in v0.7.0 

type Other string

Other Some error occurred

func (Other) Index added in v0.7.0 

func (Other) Index() uint

Index returns VDT index

type ParachainInherentData added in v0.7.0 

type ParachainInherentData struct {
	// Signed bitfields by validators about availability.
	Bitfields []uncheckedSignedAvailabilityBitfield `scale:"1"`
	// Backed candidates for inclusion in the block.
	BackedCandidates []backedCandidate `scale:"2"`
	// Sets of dispute votes for inclusion,
	Disputes multiDisputeStatementSet `scale:"3"`
	// The parent block header. Used for checking state proofs.
	ParentHeader types.Header `scale:"4"`
}

ParachainInherentData is parachains inherent-data passed into the runtime by a block author.

type Payment added in v0.7.0 

type Payment struct{}

Payment General error to do with the inability to pay some fees (e.g. account balance too low)

func (Payment) Index added in v0.7.0 

func (Payment) Index() uint

Index returns VDT index

type Randomness added in v0.3.0 

type Randomness = [types.RandomnessLength]byte

Randomness is an alias for a byte array with length types.RandomnessLength

type Service added in v0.2.0 

type Service struct {

	// State variables
	sync.RWMutex
	// contains filtered or unexported fields
}

Service contains the VRF keys for the validator, as well as BABE configuation data

func NewService added in v0.2.0 

func NewService(cfg *ServiceConfig) (*Service, error)

NewService function to create babe service

func (*Service) Authorities added in v0.2.0 

func (b *Service) Authorities() []types.Authority

Authorities returns the current BABE authorities

func (*Service) EpochLength added in v0.3.0 

func (b *Service) EpochLength() uint64

EpochLength returns the current service epoch duration

func (*Service) IsPaused added in v0.2.0 

func (b *Service) IsPaused() bool

IsPaused returns if the service is paused or not (ie. producing blocks)

func (*Service) IsStopped added in v0.2.0 

func (b *Service) IsStopped() bool

IsStopped returns true if the service is stopped (ie not producing blocks)

func (*Service) Pause added in v0.2.0 

func (b *Service) Pause() error

Pause pauses the service ie. halts block production

func (*Service) Resume added in v0.2.0 

func (b *Service) Resume() error

Resume resumes the service ie. resumes block production

func (*Service) SlotDuration added in v0.3.0 

func (b *Service) SlotDuration() uint64

SlotDuration returns the current service slot duration in milliseconds

func (*Service) Start added in v0.2.0 

func (b *Service) Start() error

Start starts BABE block authoring

func (*Service) Stop added in v0.2.0 

func (b *Service) Stop() error

Stop stops the service. If stop is called, it cannot be resumed.

type ServiceConfig added in v0.2.0 

type ServiceConfig struct {
	LogLvl             log.Level
	BlockState         BlockState
	StorageState       StorageState
	TransactionState   TransactionState
	EpochState         EpochState
	BlockImportHandler BlockImportHandler
	Keypair            *sr25519.Keypair
	AuthData           []types.Authority
	IsDev              bool
	Authority          bool
	Lead               bool
	Telemetry          telemetry.Client
}

ServiceConfig represents a BABE configuration

func (*ServiceConfig) Validate added in v0.7.0 

func (sc *ServiceConfig) Validate() error

Validate returns error if config does not contain required attributes

type ServiceIFace added in v0.7.0 

type ServiceIFace interface {
	Start() error
	Stop() error
	EpochLength() uint64
	Pause() error
	IsPaused() bool
	Resume() error
	SlotDuration() uint64
}

ServiceIFace interface that defines methods available to BabeService

type Slot 

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

Slot represents a BABE slot

func NewSlot 

func NewSlot(start time.Time, duration time.Duration, number uint64) *Slot

NewSlot returns a new Slot

func (Slot) String added in v0.7.0 

func (s Slot) String() string

type Stale added in v0.7.0 

type Stale struct{}

Stale General error to do with the transaction being outdated (e.g. nonce too low)

func (Stale) Index added in v0.7.0 

func (Stale) Index() uint

Index returns VDT index

type StorageState 

type StorageState interface {
	TrieState(hash *common.Hash) (*rtstorage.TrieState, error)
	sync.Locker
}

StorageState interface for storage state methods

type TransactionState added in v0.2.0 

type TransactionState interface {
	Push(vt *transaction.ValidTransaction) (common.Hash, error)
	Pop() *transaction.ValidTransaction
	Peek() *transaction.ValidTransaction
	PopWithTimer(timerCh <-chan time.Time) (tx *transaction.ValidTransaction)
}

TransactionState is the interface for transaction queue methods

type TransactionValidityError added in v0.7.0 

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

A TransactionValidityError is possible errors while checking the validity of a transaction

func (TransactionValidityError) Error added in v0.7.0 

func (e TransactionValidityError) Error() string

type UnknownCustom added in v0.7.0 

type UnknownCustom uint8

UnknownCustom Any other custom unknown validity that is not covered

func (UnknownCustom) Index added in v0.7.0 

func (UnknownCustom) Index() uint

Index returns VDT index

type UnmarshalError added in v0.7.0 

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

UnmarshalError occurs when unmarshalling fails

func (UnmarshalError) Error added in v0.7.0 

func (e UnmarshalError) Error() string

type ValidityCannotLookup added in v0.7.0 

type ValidityCannotLookup struct{}

ValidityCannotLookup Could not lookup some information that is required to validate the transaction

func (ValidityCannotLookup) Index added in v0.7.0 

func (ValidityCannotLookup) Index() uint

Index returns VDT index

type VerificationManager 

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

VerificationManager deals with verification that a BABE block producer was authorized to produce a given block. It trakcs the BABE epoch data that is needed for verification.

func NewVerificationManager 

func NewVerificationManager(blockState BlockState, epochState EpochState) *VerificationManager

NewVerificationManager returns a new NewVerificationManager

func (*VerificationManager) SetOnDisabled added in v0.3.0 

func (v *VerificationManager) SetOnDisabled(index uint32, header *types.Header) error

SetOnDisabled sets the BABE authority with the given index as disabled for the rest of the epoch

func (*VerificationManager) VerifyBlock 

func (v *VerificationManager) VerifyBlock(header *types.Header) error

VerifyBlock verifies that the block producer for the given block was authorized to produce it. It checks the next epoch and config data stored in memory only if it cannot retrieve the data from database It returns an error if the block is invalid.

type VrfOutputAndProof 

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

VrfOutputAndProof represents the fields for VRF output and proof

Source Files

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Directories

Path Synopsis
Package mocks is a generated GoMock package.
 Package mocks is a generated GoMock package.

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