rep

Documentation

Index

• Constants
• type RepUpdate
• type ReputationMap
• type ReputationTable
  • func NewReputationTable(peerSet *common.PeerSet) *ReputationTable
  • func (table *ReputationTable) ContribRandomPeer() string
  • func (table *ReputationTable) DecreaseContribRep(peer string)
  • func (table *ReputationTable) DecreaseSigRep(peer string, confidence float32)
  • func (table *ReputationTable) ForEachContribRep(callback func(string, float32))
  • func (table *ReputationTable) ForEachSigRep(callback func(string, float32))
  • func (table *ReputationTable) GetContribRep(peer string) (float32, bool)
  • func (table *ReputationTable) GetContribUpdate() *RepUpdate
  • func (table *ReputationTable) GetSigRep(peer string) (float32, bool)
  • func (table *ReputationTable) GetSigUpdate() *RepUpdate
  • func (table *ReputationTable) GetUpdate() *RepUpdate
  • func (table *ReputationTable) IncreaseContribRep(peer string)
  • func (table *ReputationTable) IncreaseSigRep(peer string, confidence float32)
  • func (table *ReputationTable) InitContribRepForPeer(peer string)
  • func (table *ReputationTable) InitSigRepForPeer(peer string)
  • func (table *ReputationTable) Log()
  • func (table *ReputationTable) MostReputablePeers(n uint) *ReputationTable
  • func (table *ReputationTable) Reputation(peer string) (float32, bool)
  • func (table *ReputationTable) UpdateReputations(update *RepUpdate, sender string)

Constants

const CONTRIB_ALPHA float32 = 0.4

Contribution-based reputation

const CONTRIB_ONE_MINUS_ALPHA float32 = 1 - CONTRIB_ALPHA

const DEFAULT_REP_REQ_TIMER uint = 8

Reputation update requests

const INIT_REP float32 = 0.5

const MAX_REP float32 = 1

const MIN_REP float32 = 0

General

const REP_RANGE float32 = MAX_REP - MIN_REP

const REP_REQ_PEER_COUNT uint = 3

const SIG_DECREASE_LIMIT float32 = 0.8

const SIG_INCREASE_LIMIT float32 = 0.1

Signature-based reputation

const UPDATER_DECREASE_LIMIT float32 = 0.25

const UPDATE_WEIGHT_LIMIT float32 = 0.15

Types

type RepUpdate

type RepUpdate struct {
	SigReps     ReputationMap
	ContribReps ReputationMap
}

*

• A reputation table update, holding either signature-
• based and/or contribution-based reputations.

type ReputationMap

type ReputationMap map[string]float32

*

• A simple map associating reputations in the form of
• 32-bit floating point numbers to pointers to peers.

type ReputationTable

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

*

• A data structure assotiating signature-based and
• contribution-based reputations to peers using
• ReputationMap fields.

func NewReputationTable

func NewReputationTable(peerSet *common.PeerSet) *ReputationTable

*

• Returns a new empty reputation table.

func (*ReputationTable) ContribRandomPeer

func (table *ReputationTable) ContribRandomPeer() string

func (*ReputationTable) DecreaseContribRep

func (table *ReputationTable) DecreaseContribRep(peer string)

*

• Updates the contribution-based reputation of a
• given peer to which data was sent.

func (*ReputationTable) DecreaseSigRep

func (table *ReputationTable) DecreaseSigRep(peer string, confidence float32)

func (*ReputationTable) ForEachContribRep

func (table *ReputationTable) ForEachContribRep(callback func(string, float32))

*

• Performs an operation for each entry in the contribution-based
• reputation table. The operation is defined as a callback
• function that takes a peer and a reputation as parameters.

func (*ReputationTable) ForEachSigRep

func (table *ReputationTable) ForEachSigRep(callback func(string, float32))

*

• Performs an operation for each entry in the signature-based
• reputation table. The operation is defined as a callback
• function that takes a peer and a reputation as parameters.

func (*ReputationTable) GetContribRep

func (table *ReputationTable) GetContribRep(peer string) (float32, bool)

*

• Returns the contribution-based reputation of the given peer.

func (*ReputationTable) GetContribUpdate

func (table *ReputationTable) GetContribUpdate() *RepUpdate

*

• Returns a new reputation update with the contribution-
• based reputations in this table.

func (*ReputationTable) GetSigRep

func (table *ReputationTable) GetSigRep(peer string) (float32, bool)

*

• Returns the signature-based reputation of the given peer.

func (*ReputationTable) GetSigUpdate

func (table *ReputationTable) GetSigUpdate() *RepUpdate

*

• Returns a new reputation update with the signature-
• based reputations in this table.

func (*ReputationTable) GetUpdate

func (table *ReputationTable) GetUpdate() *RepUpdate

*

• Returns a new reputation update with the signature-
• based and contribution-based reputations in this table.

func (*ReputationTable) IncreaseContribRep

func (table *ReputationTable) IncreaseContribRep(peer string)

*

• Updates the contribution-based reputation of a
• given peer from which data was received.

func (*ReputationTable) IncreaseSigRep

func (table *ReputationTable) IncreaseSigRep(peer string, confidence float32)

func (*ReputationTable) InitContribRepForPeer

func (table *ReputationTable) InitContribRepForPeer(peer string)

*

• Checks if the given peer has a contribution-based
• reputation and if it does not, initializes it.

func (*ReputationTable) InitSigRepForPeer

func (table *ReputationTable) InitSigRepForPeer(peer string)

*

• Checks if the given peer has a signature-based
• reputation and if it does not, initializes it.

func (*ReputationTable) Log

func (table *ReputationTable) Log()

func (*ReputationTable) MostReputablePeers

func (table *ReputationTable) MostReputablePeers(n uint) *ReputationTable

*

• Returns a new reputation table with the n most "signature-
• reputabale" peers and the n most "contribution-reputable"
• peers in this table, for a given n.

func (*ReputationTable) Reputation

func (table *ReputationTable) Reputation(peer string) (float32, bool)

*

• Returns the signature-based reputation of the given peer.
• Same as GetSigRep, for awot's ReputationTable interface compatibility.

func (*ReputationTable) UpdateReputations

func (table *ReputationTable) UpdateReputations(update *RepUpdate, sender string)

*

• Updates the reputations in this table with the ones in
• the given reputation update weighted by the reputation
• of the updater in this table, and updates the updater's
• reputation based on the degree of similarity between
• their update and this table.