state

package
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 Go to latest Published: Jan 8, 2020 License: MIT Imports: 15 Imported by: 0

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Constants

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const (

	// ActivateDuration is about how long we should activate from pending or
	// inactive state.
	ActivateDuration = 6

	// CacheCRVotesSize indicate the size to cache votes information.
	CacheCRVotesSize = 6
)

Variables

This section is empty.

Functions

func DisableLog 

func DisableLog()

DisableLog disables all library log output. Logging output is disabled by default until either UseLogger or SetLogWriter are called.

func UseLogger 

func UseLogger(logger elalog.Logger)

UseLogger uses a specified Logger to output package logging info. This should be used in preference to SetLogWriter if the caller is also using elalog.

Types

type CRMember 

type CRMember struct {
	Info             payload.CRInfo
	ImpeachmentVotes common.Fixed64
	DepositAmount    common.Fixed64
	DepositHash      common.Uint168
	Penalty          common.Fixed64
}

CRMember defines CR committee member related info.

func (*CRMember) Deserialize 

func (c *CRMember) Deserialize(r io.Reader) (err error)

func (*CRMember) Serialize 

func (c *CRMember) Serialize(w io.Writer) (err error)

type Candidate 

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

Candidate defines information about CR candidates during the CR vote period

func (*Candidate) CancelHeight 

func (c *Candidate) CancelHeight() uint32

RegisterHeight returns the height when the CR was unregistered.

func (*Candidate) DepositAmount 

func (c *Candidate) DepositAmount() common.Fixed64

DepositAmount returns the deposit amount of the CR.

func (*Candidate) Deserialize 

func (c *Candidate) Deserialize(r io.Reader) (err error)

func (*Candidate) Info 

func (c *Candidate) Info() payload.CRInfo

Info returns a copy of the origin registered CR info.

func (*Candidate) Penalty 

func (c *Candidate) Penalty() common.Fixed64

Penalty returns the penalty amount of deposit coin.

func (*Candidate) RegisterHeight 

func (c *Candidate) RegisterHeight() uint32

RegisterHeight returns the height when the CR was registered.

func (*Candidate) Serialize 

func (c *Candidate) Serialize(w io.Writer) (err error)

func (*Candidate) State 

func (c *Candidate) State() CandidateState

State returns the CR's state, can be pending, active, canceled or returned.

func (*Candidate) Votes 

func (c *Candidate) Votes() common.Fixed64

Votes returns the votes of the CR.

type CandidateState 

type CandidateState byte

CandidateState defines states during a CR candidates lifetime 

const (
	// Pending indicates the producer is just registered and didn't get 6
	// confirmations yet.
	Pending CandidateState = iota

	// Active indicates the CR is registered and confirmed by more than
	// 6 blocks.
	Active

	// Canceled indicates the CR was canceled.
	Canceled

	// Returned indicates the CR has canceled and deposit returned.
	Returned
)

func (CandidateState) String 

func (ps CandidateState) String() string

type Checkpoint 

type Checkpoint struct {
	KeyFrame
	StateKeyFrame
	// contains filtered or unexported fields
}

Checkpoint hold all CR related states to recover from scratch.

func NewCheckpoint 

func NewCheckpoint(committee *Committee) *Checkpoint

func (*Checkpoint) DataExtension 

func (c *Checkpoint) DataExtension() string

func (*Checkpoint) Deserialize 

func (c *Checkpoint) Deserialize(r io.Reader) (err error)

func (*Checkpoint) EffectivePeriod 

func (c *Checkpoint) EffectivePeriod() uint32

func (*Checkpoint) Generator 

func (c *Checkpoint) Generator() func(buf []byte) checkpoint.ICheckPoint

func (*Checkpoint) GetHeight 

func (c *Checkpoint) GetHeight() uint32

func (*Checkpoint) Key 

func (c *Checkpoint) Key() string

func (*Checkpoint) LogError 

func (c *Checkpoint) LogError(err error)

func (*Checkpoint) OnBlockSaved 

func (c *Checkpoint) OnBlockSaved(block *types.DposBlock)

func (*Checkpoint) OnInit 

func (c *Checkpoint) OnInit()

func (*Checkpoint) OnRollbackTo 

func (c *Checkpoint) OnRollbackTo(height uint32) error

func (*Checkpoint) Priority 

func (c *Checkpoint) Priority() checkpoint.Priority

func (*Checkpoint) SavePeriod 

func (c *Checkpoint) SavePeriod() uint32

func (*Checkpoint) Serialize 

func (c *Checkpoint) Serialize(w io.Writer) (err error)

func (*Checkpoint) SetHeight 

func (c *Checkpoint) SetHeight(height uint32)

func (*Checkpoint) Snapshot 

func (c *Checkpoint) Snapshot() checkpoint.ICheckPoint

func (*Checkpoint) StartHeight 

func (c *Checkpoint) StartHeight() uint32

type Committee 

type Committee struct {
	KeyFrame
	// contains filtered or unexported fields
}

func NewCommittee 

func NewCommittee(params *config.Params) *Committee

func (*Committee) ExistCR 

func (c *Committee) ExistCR(programCode []byte) bool

func (*Committee) GetAllMembers 

func (c *Committee) GetAllMembers() []*CRMember

get all CRMembers

func (*Committee) GetMembersCodes 

func (c *Committee) GetMembersCodes() [][]byte

func (*Committee) GetMembersDIDs 

func (c *Committee) GetMembersDIDs() []common.Uint168

func (*Committee) GetState 

func (c *Committee) GetState() *State

func (*Committee) IsInVotingPeriod 

func (c *Committee) IsInVotingPeriod(height uint32) bool

func (*Committee) ProcessBlock 

func (c *Committee) ProcessBlock(block *types.Block, confirm *payload.Confirm)

func (*Committee) Recover 

func (c *Committee) Recover(checkpoint *Checkpoint)

func (*Committee) RollbackTo 

func (c *Committee) RollbackTo(height uint32) error

type ICRRecord 

type ICRRecord interface {
	GetHeightsDesc() ([]uint32, error)
	GetCheckpoint(height uint32) (*Checkpoint, error)
	SaveCheckpoint(point *Checkpoint) error
}

ICRRecord defines necessary operations about CR checkpoint

type KeyFrame 

type KeyFrame struct {
	Members             []*CRMember
	LastCommitteeHeight uint32
}

StateKeyFrame holds necessary state about CR committee.

func NewKeyFrame 

func NewKeyFrame() *KeyFrame

func (*KeyFrame) Deserialize 

func (k *KeyFrame) Deserialize(r io.Reader) (err error)

func (*KeyFrame) Serialize 

func (k *KeyFrame) Serialize(w io.Writer) (err error)

func (*KeyFrame) Snapshot 

func (k *KeyFrame) Snapshot() *KeyFrame

type State 

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

State hold all CR candidates related information, and process block by block to update votes and any other changes about candidates.

func NewState 

func NewState(chainParams *config.Params) *State

func (*State) ExistCandidate 

func (s *State) ExistCandidate(programCode []byte) bool

ExistCandidate judges if there is a candidate with specified program code.

func (*State) ExistCandidateByDID 

func (s *State) ExistCandidateByDID(did common.Uint168) (ok bool)

ExistCandidateByDID judges if there is a candidate with specified did.

func (*State) ExistCandidateByDepositHash 

func (s *State) ExistCandidateByDepositHash(did common.Uint168) bool

ExistCandidateByDepositHash judges if there is a candidate with deposit hash.

func (*State) ExistCandidateByNickname 

func (s *State) ExistCandidateByNickname(nickname string) bool

ExistCandidateByNickname judges if there is a candidate with specified nickname.

func (*State) FinishVoting 

func (s *State) FinishVoting(dids []common.Uint168) *StateKeyFrame

FinishVoting will close all voting util next voting period

func (*State) GetAllCandidates 

func (s *State) GetAllCandidates() []*Candidate

GetAllCandidates returns all candidates holding within state.

func (*State) GetCandidate 

func (s *State) GetCandidate(programCode []byte) *Candidate

GetCandidate returns candidate with specified program code, it will return nil if not found.

func (*State) GetCandidateByDID 

func (s *State) GetCandidateByDID(did common.Uint168) *Candidate

GetCandidateByDID returns candidate with specified did, it will return nil nil if not found.

func (*State) GetCandidates 

func (s *State) GetCandidates(state CandidateState) []*Candidate

GetCandidates returns candidates with specified candidate state.

func (*State) IsCRTransaction 

func (s *State) IsCRTransaction(tx *types.Transaction) bool

IsCRTransaction returns if a transaction will change the CR and votes state.

func (*State) ProcessBlock 

func (s *State) ProcessBlock(block *types.Block, confirm *payload.Confirm)

ProcessBlock takes a block and it's confirm to update CR state and votes accordingly.

func (*State) ProcessReturnDepositTxs 

func (s *State) ProcessReturnDepositTxs(block *types.Block)

ProcessBlock takes a block and it's confirm to update CR state and votes accordingly.

func (*State) RollbackTo 

func (s *State) RollbackTo(height uint32) error

RollbackTo restores the database state to the given height, if no enough history to rollback to return error.

type StateKeyFrame 

type StateKeyFrame struct {
	CodeDIDMap         map[string]common.Uint168
	DepositHashMap     map[common.Uint168]struct{}
	PendingCandidates  map[common.Uint168]*Candidate
	ActivityCandidates map[common.Uint168]*Candidate
	CanceledCandidates map[common.Uint168]*Candidate
	Nicknames          map[string]struct{}
	Votes              map[string]*types.Output
	DepositOutputs     map[string]*types.Output
}

StateKeyFrame holds necessary state about CR state.

func NewStateKeyFrame 

func NewStateKeyFrame() *StateKeyFrame

func (*StateKeyFrame) Deserialize 

func (k *StateKeyFrame) Deserialize(r io.Reader) (err error)

func (*StateKeyFrame) Serialize 

func (k *StateKeyFrame) Serialize(w io.Writer) (err error)

func (*StateKeyFrame) Snapshot 

func (k *StateKeyFrame) Snapshot() *StateKeyFrame

Snapshot will create a new StateKeyFrame object and deep copy all related data.

Source Files

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