polybft

package
v0.7.0-v3-parity-previ... Latest Latest
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 Go to latest Published: Nov 10, 2022 License: Apache-2.0 Imports: 51 Imported by: 1

Documentation

Overview

Package polybft implements PBFT consensus algorithm integration and bridge feature

Index

Constants

View Source 
const (
	// ExtraVanity represents a fixed number of extra-data bytes reserved for proposer vanity
	ExtraVanity = 32

	// ExtraSeal represents the fixed number of extra-data bytes reserved for proposer seal
	ExtraSeal = 65
)

Variables

View Source 
var PolyBFTMixDigest = types.StringToHash("adce6e5230abe012342a44e4e9b6d05997d6f015387ae0e59be924afc7ec70c1")

PolyBFTMixDigest represents a hash of "PolyBFT Mix" to identify whether the block is from PolyBFT consensus engine

Functions

func Factory 

func Factory(params *consensus.Params) (consensus.Consensus, error)

Factory is the factory function to create a discovery consensus

func GenesisPostHookFactory 

func GenesisPostHookFactory(config *chain.Chain, engineName string) func(txn *state.Transition) error

func GetIbftExtraClean 

func GetIbftExtraClean(extraRaw []byte) ([]byte, error)

GetIbftExtraClean returns unmarshaled extra field from the passed in header, but without signatures for the given header (it only includes signatures for the parent block)

func NewStateProvider 

func NewStateProvider(transition *state.Transition) contract.Provider

NewStateProvider initializes EVM against given state and chain config and returns stateProvider instance which is an abstraction for smart contract calls

func VerifyProof 

func VerifyProof(index uint64, leaf []byte, proof []types.Hash, root types.Hash) error

VerifyProof verifies a Merkle tree proof of membership for provided data using the default hash type (Keccak256)

func VerifyProofUsing 

func VerifyProofUsing(index uint64, leaf []byte, proof []types.Hash, root types.Hash, hash hash.Hash) error

VerifyProofUsing verifies a Merkle tree proof of membership for provided data using the provided hash type

Types

type AccountSet 

type AccountSet []*ValidatorMetadata

AccountSet is a type alias for slice of ValidatorMetadata instances

func (AccountSet) ApplyDelta 

func (as AccountSet) ApplyDelta(validatorsDelta *ValidatorSetDelta) (AccountSet, error)

ApplyDelta receives ValidatorSetDelta and applies it to the values from the current AccountSet (removes the ones marked for deletion and adds the one which are being added by delta) Function returns new AccountSet with old and new data merged. AccountSet is immutable!

func (AccountSet) AsGenericMaps 

func (as AccountSet) AsGenericMaps() []map[string]interface{}

AsGenericMaps convert AccountSet object to slice of maps, where each key denotes field name mapped to a value

func (AccountSet) ContainsAddress 

func (as AccountSet) ContainsAddress(address types.Address) bool

ContainsAddress checks whether ValidatorMetadata with given address is present in the AccountSet

func (AccountSet) ContainsNodeID 

func (as AccountSet) ContainsNodeID(nodeID string) bool

ContainsNodeID checks whether ValidatorMetadata with given nodeID is present in the AccountSet

func (AccountSet) Copy 

func (as AccountSet) Copy() AccountSet

Copy returns deep copy of AccountSet

func (AccountSet) GetAddresses 

func (as AccountSet) GetAddresses() []types.Address

GetAddresses aggregates addresses for given AccountSet

func (AccountSet) GetBlsKeys 

func (as AccountSet) GetBlsKeys() []*bls.PublicKey

GetBlsKeys aggregates public BLS keys for given AccountSet

func (AccountSet) GetFilteredValidators 

func (as AccountSet) GetFilteredValidators(bitmap bitmap.Bitmap) (AccountSet, error)

GetFilteredValidators returns filtered validators based on provided bitmap. Filtered validators will contain validators whose index corresponds to the position in bitmap which has value set to 1.

func (AccountSet) GetValidatorMetadata 

func (as AccountSet) GetValidatorMetadata(address types.Address) *ValidatorMetadata

GetValidatorMetadata tries to retrieve validator account metadata by given address from the account set. It returns nil if such account is not found.

func (AccountSet) Hash 

func (as AccountSet) Hash() (types.Hash, error)

Hash returns hash value of the AccountSet

func (AccountSet) Index 

func (as AccountSet) Index(addr types.Address) int

Index returns index of the given ValidatorMetadata, identified by address within the AccountSet. If given ValidatorMetadata is not present, it returns -1.

func (AccountSet) Len 

func (as AccountSet) Len() int

Len returns length of AccountSet

func (AccountSet) Marshal 

func (as AccountSet) Marshal() ([]byte, error)

Marshal marshals AccountSet to JSON

func (*AccountSet) Unmarshal 

func (as *AccountSet) Unmarshal(b []byte) error

Unmarshal unmarshals AccountSet from JSON

type BlockBuilder 

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

func NewBlockBuilder 

func NewBlockBuilder(params *BlockBuilderParams) (*BlockBuilder, error)

func (*BlockBuilder) Block 

func (b *BlockBuilder) Block() *types.Block

Block returns the built block if nil, it is not built yet

func (*BlockBuilder) Build 

func (b *BlockBuilder) Build(handler func(h *types.Header)) (*StateBlock, error)

Build creates the state and the final block

func (*BlockBuilder) Fill 

func (b *BlockBuilder) Fill()

Fill fills the block with transactions from the txpool

func (*BlockBuilder) GetState 

func (b *BlockBuilder) GetState() *state.Transition

GetState returns Transition reference

func (*BlockBuilder) Receipts 

func (b *BlockBuilder) Receipts() []*types.Receipt

Receipts returns the collection of transaction receipts for given block

func (*BlockBuilder) Reset 

func (b *BlockBuilder) Reset() error

Reset is used to indicate that the current block building has been interrupted and it has to clean any data

func (*BlockBuilder) WriteTx 

func (b *BlockBuilder) WriteTx(tx *types.Transaction) error

WriteTx applies given transaction to the state. If transaction apply fails, it reverts the saved snapshot.

type BlockBuilderParams 

type BlockBuilderParams struct {
	// Parent block
	Parent *types.Header

	// Executor
	Executor *state.Executor

	// Coinbase that is signing the block
	Coinbase types.Address

	// Vanity extra for the block
	Extra []byte

	// GasLimit is the gas limit for the block
	GasLimit uint64

	// duration for one block
	BlockTime time.Duration

	// Logger
	Logger hcf.Logger

	// txPoolInterface implementation
	TxPool txPoolInterface
}

BlockBuilderParams are fields for the block that cannot be changed

type BridgeConfig 

type BridgeConfig struct {
	BridgeAddr      types.Address `json:"bridgeAddr"`
	CheckpointAddr  types.Address `json:"checkpointAddr"`
	JSONRPCEndpoint string        `json:"jsonRPCEndpoint"`
}

BridgeConfig is the configuration for the bridge

type BridgeTransport 

type BridgeTransport interface {
	Multicast(msg interface{})
}

BridgeTransport is an abstraction of network layer for a bridge

type Bundle 

type Bundle []*StateSyncEvent

Bundle is a type alias for slice of StateSyncEvents

type BundleProof 

type BundleProof struct {
	Proof      []types.Hash
	StateSyncs Bundle
}

BundleProof contains the proof of a bundle

func (*BundleProof) DecodeAbi 

func (bp *BundleProof) DecodeAbi(txData []byte) error

DecodeAbi contains logic for decoding given ABI data

func (*BundleProof) EncodeAbi 

func (bp *BundleProof) EncodeAbi() ([]byte, error)

EncodeAbi contains logic for encoding arbitrary data into ABI format

func (*BundleProof) ID 

func (bp *BundleProof) ID() uint64

ID returns identificator of bundle proof, which correspond to its first state sync id

func (*BundleProof) Type 

func (bp *BundleProof) Type() StateTransactionType

Type returns type of state transaction input

type CheckpointData 

type CheckpointData struct {
	BlockRound            uint64
	EpochNumber           uint64
	CurrentValidatorsHash types.Hash
	NextValidatorsHash    types.Hash
	EventRoot             types.Hash
}

CheckpointData represents data needed for checkpointing mechanism

func (*CheckpointData) Copy 

func (c *CheckpointData) Copy() *CheckpointData

Copy returns deep copy of CheckpointData instance

func (*CheckpointData) Hash 

func (c *CheckpointData) Hash(chainID uint64, blockNumber uint64, blockHash types.Hash) (types.Hash, error)

Hash calculates keccak256 hash of the CheckpointData. CheckpointData is ABI encoded and then hashed.

func (*CheckpointData) MarshalRLPWith 

func (c *CheckpointData) MarshalRLPWith(ar *fastrlp.Arena) *fastrlp.Value

MarshalRLPWith defines the marshal function implementation for CheckpointData

func (*CheckpointData) UnmarshalRLPWith 

func (c *CheckpointData) UnmarshalRLPWith(v *fastrlp.Value) error

UnmarshalRLPWith unmarshals CheckpointData object from the RLP format

type CommitEpoch 

type CommitEpoch struct {
	EpochID uint64 `abi:"epochid"`
	Epoch   Epoch  `abi:"epoch"`
	Uptime  Uptime `abi:"uptime"`
}

CommitEpoch contains data that is sent to ChildValidatorSet contract to distribute rewards on the end of an epoch

func (*CommitEpoch) DecodeAbi 

func (c *CommitEpoch) DecodeAbi(txData []byte) error

DecodeAbi decodes the commit epoch object from the given transaction

func (*CommitEpoch) EncodeAbi 

func (c *CommitEpoch) EncodeAbi() ([]byte, error)

EncodeAbi encodes the commit epoch object to be placed in a transaction

func (*CommitEpoch) Type 

func (c *CommitEpoch) Type() StateTransactionType

Type returns the state transaction type for given data

type Commitment 

type Commitment struct {
	MerkleTree *MerkleTree
	Epoch      uint64
	FromIndex  uint64
	ToIndex    uint64
	LeavesNum  uint64
}

Commitment holds merkle trie of bridge transactions accompanied by epoch number

func NewCommitment 

func NewCommitment(epoch, fromIndex, toIndex, bundleSize uint64,
	stateSyncEvents []*StateSyncEvent) (*Commitment, error)

NewCommitment creates a new commitment object

func (*Commitment) Hash 

func (cm *Commitment) Hash() (types.Hash, error)

Hash calculates hash value for commitment object.

type CommitmentMessage 

type CommitmentMessage struct {
	MerkleRootHash types.Hash
	FromIndex      uint64
	ToIndex        uint64
	Epoch          uint64
	BundleSize     uint64
}

CommitmentMessage holds metadata for bridge transactions

func NewCommitmentMessage 

func NewCommitmentMessage(merkleRootHash types.Hash, fromIndex, toIndex, bundleSize uint64) *CommitmentMessage

NewCommitmentMessage creates a new commitment message based on provided merkle root hash where fromIndex represents an id of the first state event index in commitment where toIndex represents an id of the last state event index in commitment where bundleSize represents the number of bundles (leafs) in commitment

func (*CommitmentMessage) BundlesCount 

func (cm *CommitmentMessage) BundlesCount() uint64

BundlesCount calculates bundles count contained in given CommitmentMessge

func (*CommitmentMessage) ContainsStateSync 

func (cm *CommitmentMessage) ContainsStateSync(stateSyncIndex uint64) bool

ContainsStateSync checks whether CommitmentMessage contains state sync event identified by index, by comparing given state sync index with the bounds of CommitmentMessage

func (*CommitmentMessage) GetBundleIdxFromStateSyncEventIdx 

func (cm *CommitmentMessage) GetBundleIdxFromStateSyncEventIdx(stateSyncEventIdx uint64) uint64

GetBundleIdxFromStateSyncEventIdx resolves bundle index based on given state sync event index

func (*CommitmentMessage) GetFirstStateSyncIndexFromBundleIndex 

func (cm *CommitmentMessage) GetFirstStateSyncIndexFromBundleIndex(bundleIndex uint64) uint64

GetFirstStateSyncIndexFromBundleIndex returns first state sync index based on bundle size and given bundle index (offseted by FromIndex in CommitmentMessage)

func (*CommitmentMessage) Hash 

func (cm *CommitmentMessage) Hash() (types.Hash, error)

Hash calculates hash value for commitment object.

func (CommitmentMessage) VerifyProof 

func (cm CommitmentMessage) VerifyProof(bundle *BundleProof) error

VerifyProof validates given bundle proof against merkle trie root hash contained in the CommitmentMessage

type CommitmentMessageSigned 

type CommitmentMessageSigned struct {
	Message      *CommitmentMessage
	AggSignature Signature
	PublicKeys   [][]byte
}

CommitmentMessageSigned encapsulates commitment message with aggregated signatures

func (*CommitmentMessageSigned) DecodeAbi 

func (cm *CommitmentMessageSigned) DecodeAbi(txData []byte) error

DecodeAbi contains logic for decoding given ABI data

func (*CommitmentMessageSigned) EncodeAbi 

func (cm *CommitmentMessageSigned) EncodeAbi() ([]byte, error)

EncodeAbi contains logic for encoding arbitrary data into ABI format

func (*CommitmentMessageSigned) Type 

func (cm *CommitmentMessageSigned) Type() StateTransactionType

Type returns type of state transaction input

type DebugConfig 

type DebugConfig struct {
	ValidatorSetSize uint64 `json:"validatorSetSize"`
}

DebugConfig is a struct used for test configuration in init genesis

type Epoch 

type Epoch struct {
	StartBlock uint64     `abi:"startblock"`
	EndBlock   uint64     `abi:"endblock"`
	EpochRoot  types.Hash `abi:"epochroot"`
}

Epoch holds the data about epoch execution (when it started and when it ended)

type ExitEvent 

type ExitEvent struct {
	// ID is the decoded 'index' field from the event
	ID uint64 `abi:"id"`
	// Sender is the decoded 'sender' field from the event
	Sender ethgo.Address `abi:"sender"`
	// Receiver is the decoded 'receiver' field from the event
	Receiver ethgo.Address `abi:"receiver"`
	// Data is the decoded 'data' field from the event
	Data []byte `abi:"data"`
	// EpochNumber is the epoch number in which exit event was added
	EpochNumber uint64 `abi:"-"`
	// BlockNumber is the block in which exit event was added
	BlockNumber uint64 `abi:"-"`
}

ExitEvent is an event emitted by Exit contract

type Extra 

type Extra struct {
	Validators *ValidatorSetDelta
	Seal       []byte
	Parent     *Signature
	Committed  *Signature
	Checkpoint *CheckpointData
}

Extra defines the structure of the extra field for Istanbul

func GetIbftExtra 

func GetIbftExtra(extraB []byte) (*Extra, error)

GetIbftExtra returns the istanbul extra data field from the passed in header

func (*Extra) MarshalRLPTo 

func (i *Extra) MarshalRLPTo(dst []byte) []byte

MarshalRLPTo defines the marshal function wrapper for Extra

func (*Extra) MarshalRLPWith 

func (i *Extra) MarshalRLPWith(ar *fastrlp.Arena) *fastrlp.Value

MarshalRLPWith defines the marshal function implementation for Extra

func (*Extra) UnmarshalRLP 

func (i *Extra) UnmarshalRLP(input []byte) error

UnmarshalRLP defines the unmarshal function wrapper for Extra

func (*Extra) UnmarshalRLPWith 

func (i *Extra) UnmarshalRLPWith(v *fastrlp.Value) error

UnmarshalRLPWith defines the unmarshal implementation for Extra

type IBFTConsensusWrapper 

type IBFTConsensusWrapper struct {
	*core.IBFT
}

IBFTConsensusWrapper is a convenience wrapper for the go-ibft package

type MerkleTree 

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

MerkleTree is the structure for the Merkle tree.

func NewMerkleTree 

func NewMerkleTree(data [][]byte) (*MerkleTree, error)

NewMerkleTree creates a new Merkle tree from the provided data and using the default hashing (Keccak256).

func NewMerkleTreeWithHashing 

func NewMerkleTreeWithHashing(data [][]byte, hash hash.Hash) (*MerkleTree, error)

NewMerkleTreeWithHashing creates a new Merkle tree from the provided data and hash type

func (*MerkleTree) GenerateProof 

func (t *MerkleTree) GenerateProof(index uint64, height int) []types.Hash

GenerateProof generates the proof of membership for a piece of data in the Merkle tree.

func (*MerkleTree) GenerateProofForLeaf 

func (t *MerkleTree) GenerateProofForLeaf(leaf []byte, height int) ([]types.Hash, error)

GenerateProofForLeaf generates the proof of membership for a piece of data in the Merkle tree. If the data is not present in the tree this will return an error

func (*MerkleTree) Hash 

func (t *MerkleTree) Hash() types.Hash

Hash is the Merkle Tree root hash

func (*MerkleTree) LeafIndex 

func (t *MerkleTree) LeafIndex(leaf []byte) (uint64, error)

LeafIndex returns the index of given leaf if found in tree

func (*MerkleTree) String 

func (t *MerkleTree) String() string

String implements the stringer interface

type MessageSignature 

type MessageSignature struct {
	// Signer of the vote
	From string
	// Signature of the message
	Signature []byte
}

MessageSignature encapsulates sender identifier and its signature

type PolyBFTConfig 

type PolyBFTConfig struct {
	InitialValidatorSet []*Validator  `json:"initialValidatorSet"`
	Bridge              *BridgeConfig `json:"bridge"`

	ValidatorSetSize int `json:"validatorSetSize"`

	// Address of the system contracts, as of now (testing) this is populated automatically during genesis
	ValidatorSetAddr  types.Address `json:"validatorSetAddr"`
	StateReceiverAddr types.Address `json:"stateReceiverAddr"`

	// size of the epoch and sprint
	EpochSize  uint64 `json:"epochSize"`
	SprintSize uint64 `json:"sprintSize"`

	BlockTime time.Duration `json:"blockTime"`

	// Governance is the initial governance address
	Governance types.Address `json:"governance"`
}

PolyBFTConfig is the configuration file for the Polybft consensus protocol.

func (*PolyBFTConfig) IsBridgeEnabled 

func (p *PolyBFTConfig) IsBridgeEnabled() bool

type Polybft 

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

func (*Polybft) Close 

func (p *Polybft) Close() error

Close closes the connection

func (*Polybft) GetBlockCreator 

func (p *Polybft) GetBlockCreator(h *types.Header) (types.Address, error)

GetBlockCreator retrieves the block creator (or signer) given the block header

func (*Polybft) GetBridgeProvider 

func (p *Polybft) GetBridgeProvider() consensus.BridgeDataProvider

GetBridgeProvider returns an instance of BridgeDataProvider

func (*Polybft) GetSyncProgression 

func (p *Polybft) GetSyncProgression() *progress.Progression

GetSyncProgression retrieves the current sync progression, if any

func (*Polybft) GetValidators 

func (p *Polybft) GetValidators(blockNumber uint64, parents []*types.Header) (AccountSet, error)

func (*Polybft) Initialize 

func (p *Polybft) Initialize() error

Initialize initializes the consensus (e.g. setup data)

func (*Polybft) Multicast 

func (p *Polybft) Multicast(msg *proto.Message)

Multicast is implementation of core.Transport interface

func (*Polybft) PreCommitState 

func (p *Polybft) PreCommitState(_ *types.Header, _ *state.Transition) error

PreCommitState a hook to be called before finalizing state transition on inserting block

func (*Polybft) ProcessHeaders 

func (p *Polybft) ProcessHeaders(_ []*types.Header) error

ProcessHeaders updates the snapshot based on the verified headers

func (*Polybft) Start 

func (p *Polybft) Start() error

Start starts the consensus and servers

func (*Polybft) VerifyHeader 

func (p *Polybft) VerifyHeader(header *types.Header) error

VerifyHeader implements consensus.Engine and checks whether a header conforms to the consensus rules

type Signature 

type Signature struct {
	AggregatedSignature []byte
	Bitmap              []byte
}

Signature represents aggregated signatures of signers accompanied with a bitmap (in order to be able to determine identities of each signer)

func (*Signature) MarshalRLPWith 

func (s *Signature) MarshalRLPWith(ar *fastrlp.Arena) *fastrlp.Value

MarshalRLPWith marshals Signature object into RLP format

func (*Signature) UnmarshalRLPWith 

func (s *Signature) UnmarshalRLPWith(v *fastrlp.Value) error

UnmarshalRLPWith unmarshals Signature object from the RLP format

func (*Signature) VerifyCommittedFields 

func (s *Signature) VerifyCommittedFields(validatorSet AccountSet, hash types.Hash) error

VerifyCommittedFields is checking for consensus proof in the header

type State 

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

State represents a persistence layer which persists consensus data off-chain

type StateBlock 

type StateBlock struct {
	Block    *types.Block
	Receipts []*types.Receipt
	State    *state.Transition
}

StateBlock is a block with the full state it modifies

type StateSyncEvent 

type StateSyncEvent struct {
	// ID is the decoded 'index' field from the event
	ID uint64
	// Sender is the decoded 'sender' field from the event
	Sender ethgo.Address
	// Receiver is the decoded 'receiver' field from the event
	Receiver ethgo.Address
	// Data is the decoded 'data' field from the event
	Data []byte
	// Skip is the decoded 'skip' field from the event
	Skip bool
}

StateSyncEvent is a bridge event from the rootchain

func (*StateSyncEvent) String 

func (s *StateSyncEvent) String() string

type StateTransactionInput 

type StateTransactionInput interface {
	// EncodeAbi contains logic for encoding arbitrary data into ABI format
	EncodeAbi() ([]byte, error)
	// DecodeAbi contains logic for decoding given ABI data
	DecodeAbi(b []byte) error
	// Type returns type of state transaction input
	Type() StateTransactionType
}

StateTransactionInput is an abstraction for different state transaction inputs

type StateTransactionType 

type StateTransactionType string

StateTransactionType is a type, which represents state transaction type

type SystemState 

type SystemState interface {
	// GetValidatorSet retrieves current validator set from the smart contract
	GetValidatorSet() (AccountSet, error)
	// GetEpoch retrieves current epoch number from the smart contract
	GetEpoch() (uint64, error)
	// GetNextExecutionIndex retrieves next bridge state sync index
	GetNextExecutionIndex() (uint64, error)
	// GetNextCommittedIndex retrieves next committed bridge state sync index
	GetNextCommittedIndex() (uint64, error)
}

SystemState is an interface to interact with the consensus system contracts in the chain

type SystemStateImpl 

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

SystemStateImpl is implementation of SystemState interface

func NewSystemState 

func NewSystemState(config *PolyBFTConfig, provider contract.Provider) *SystemStateImpl

NewSystemState initializes new instance of systemState which abstracts smart contracts functions

func (*SystemStateImpl) GetEpoch 

func (s *SystemStateImpl) GetEpoch() (uint64, error)

GetEpoch retrieves current epoch number from the smart contract

func (*SystemStateImpl) GetNextCommittedIndex 

func (s *SystemStateImpl) GetNextCommittedIndex() (uint64, error)

GetNextCommittedIndex retrieves next committed bridge state sync index

func (*SystemStateImpl) GetNextExecutionIndex 

func (s *SystemStateImpl) GetNextExecutionIndex() (uint64, error)

GetNextExecutionIndex retrieves next bridge state sync index

func (*SystemStateImpl) GetValidatorSet 

func (s *SystemStateImpl) GetValidatorSet() (AccountSet, error)

GetValidatorSet retrieves current validator set from the smart contract

type TransportMessage 

type TransportMessage struct {
	// Hash is encoded data
	Hash []byte
	// Message signature
	Signature []byte
	// Node identifier
	NodeID string
	// Number of epoch
	EpochNumber uint64
}

TransportMessage represents the payload which is gossiped across the network

type Uptime 

type Uptime struct {
	EpochID     uint64            `abi:"epochid"`
	UptimeData  []ValidatorUptime `abi:"uptimedata"`
	TotalUptime uint64            `abi:"totaluptime"`
}

Uptime holds the data about number of times validators sealed blocks in a given epoch

type Validator 

type Validator struct {
	Address types.Address `json:"address"`
	BlsKey  string        `json:"blsKey"`
	Balance *big.Int      `json:"balance"`
}

func (*Validator) MarshalJSON 

func (v *Validator) MarshalJSON() ([]byte, error)

func (*Validator) UnmarshalJSON 

func (v *Validator) UnmarshalJSON(data []byte) error

type ValidatorMetadata 

type ValidatorMetadata struct {
	Address     types.Address
	BlsKey      *bls.PublicKey
	VotingPower uint64
}

ValidatorMetadata represents a validator metadata (its public identity)

func (ValidatorMetadata) Copy 

func (a ValidatorMetadata) Copy() *ValidatorMetadata

Copy returns a deep copy of ValidatorMetadata

func (ValidatorMetadata) Equals 

func (a ValidatorMetadata) Equals(b *ValidatorMetadata) bool

Equals compares ValidatorMetadata equality

func (ValidatorMetadata) MarshalRLPWith 

func (a ValidatorMetadata) MarshalRLPWith(ar *fastrlp.Arena) *fastrlp.Value

MarshalRLPWith marshals ValidatorMetadata to the RLP format

func (ValidatorMetadata) String 

func (a ValidatorMetadata) String() string

fmt.Stringer implementation

func (*ValidatorMetadata) UnmarshalRLPWith 

func (a *ValidatorMetadata) UnmarshalRLPWith(v *fastrlp.Value) error

UnmarshalRLPWith unmarshals ValidatorMetadata from the RLP format

type ValidatorSet 

type ValidatorSet interface {

	// CalcProposer calculates next proposer based on the passed round
	CalcProposer(round uint64) types.Address

	// Includes checks if the passed address in included in the current validator set
	Includes(address types.Address) bool

	// Len returns the size of the validator set
	Len() int

	// Accounts returns the list of the ValidatorMetadata
	Accounts() AccountSet
}

ValidatorSet interface of the current validator set

type ValidatorSetDelta 

type ValidatorSetDelta struct {
	// Added is the list of new validators for the epoch
	Added AccountSet
	// Removed is a bitmap of the validators removed from the set
	Removed bitmap.Bitmap
}

ValidatorSetDelta holds information about added and removed validators compared to the previous epoch

func (*ValidatorSetDelta) Copy 

func (d *ValidatorSetDelta) Copy() *ValidatorSetDelta

Copy creates deep copy of ValidatorSetDelta

func (*ValidatorSetDelta) IsEmpty 

func (d *ValidatorSetDelta) IsEmpty() bool

IsEmpty returns indication whether delta is empty (namely added and removed slices are empty)

func (*ValidatorSetDelta) MarshalRLPWith 

func (d *ValidatorSetDelta) MarshalRLPWith(ar *fastrlp.Arena) *fastrlp.Value

MarshalRLPWith marshals ValidatorSetDelta to RLP format

func (*ValidatorSetDelta) String 

func (d *ValidatorSetDelta) String() string

fmt.Stringer interface implementation

func (*ValidatorSetDelta) UnmarshalRLPWith 

func (d *ValidatorSetDelta) UnmarshalRLPWith(v *fastrlp.Value) error

UnmarshalRLPWith unmarshals ValidatorSetDelta from RLP format

type ValidatorUptime 

type ValidatorUptime struct {
	Address types.Address `abi:"validator"`
	Count   uint64        `abi:"uptime"`
}

ValidatorUptime contains data about how many blocks a given validator has sealed in a single period (epoch)

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