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@ -54,13 +54,13 @@ var Pof = pot.DefaultPof(256) |
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// KadParams holds the config params for Kademlia
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type KadParams struct { |
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// adjustable parameters
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MaxProxDisplay int // number of rows the table shows
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MinProxBinSize int // nearest neighbour core minimum cardinality
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MinBinSize int // minimum number of peers in a row
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MaxBinSize int // maximum number of peers in a row before pruning
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RetryInterval int64 // initial interval before a peer is first redialed
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RetryExponent int // exponent to multiply retry intervals with
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MaxRetries int // maximum number of redial attempts
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MaxProxDisplay int // number of rows the table shows
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NeighbourhoodSize int // nearest neighbour core minimum cardinality
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MinBinSize int // minimum number of peers in a row
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MaxBinSize int // maximum number of peers in a row before pruning
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RetryInterval int64 // initial interval before a peer is first redialed
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RetryExponent int // exponent to multiply retry intervals with
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MaxRetries int // maximum number of redial attempts
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// function to sanction or prevent suggesting a peer
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Reachable func(*BzzAddr) bool `json:"-"` |
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} |
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@ -68,13 +68,13 @@ type KadParams struct { |
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// NewKadParams returns a params struct with default values
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func NewKadParams() *KadParams { |
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return &KadParams{ |
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MaxProxDisplay: 16, |
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MinProxBinSize: 2, |
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MinBinSize: 2, |
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MaxBinSize: 4, |
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RetryInterval: 4200000000, // 4.2 sec
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MaxRetries: 42, |
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RetryExponent: 2, |
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MaxProxDisplay: 16, |
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NeighbourhoodSize: 2, |
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MinBinSize: 2, |
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MaxBinSize: 4, |
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RetryInterval: 4200000000, // 4.2 sec
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MaxRetries: 42, |
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RetryExponent: 2, |
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} |
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} |
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@ -175,7 +175,7 @@ func (k *Kademlia) SuggestPeer() (a *BzzAddr, o int, want bool) { |
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k.lock.Lock() |
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defer k.lock.Unlock() |
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minsize := k.MinBinSize |
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depth := depthForPot(k.conns, k.MinProxBinSize, k.base) |
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depth := depthForPot(k.conns, k.NeighbourhoodSize, k.base) |
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// if there is a callable neighbour within the current proxBin, connect
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// this makes sure nearest neighbour set is fully connected
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var ppo int |
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@ -306,7 +306,7 @@ func (k *Kademlia) sendNeighbourhoodDepthChange() { |
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// It provides signaling of neighbourhood depth change.
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// This part of the code is sending new neighbourhood depth to nDepthC if that condition is met.
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if k.nDepthC != nil { |
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nDepth := depthForPot(k.conns, k.MinProxBinSize, k.base) |
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nDepth := depthForPot(k.conns, k.NeighbourhoodSize, k.base) |
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if nDepth != k.nDepth { |
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k.nDepth = nDepth |
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k.nDepthC <- nDepth |
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@ -366,7 +366,7 @@ func (k *Kademlia) EachBin(base []byte, pof pot.Pof, o int, eachBinFunc func(con |
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var startPo int |
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var endPo int |
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kadDepth := depthForPot(k.conns, k.MinProxBinSize, k.base) |
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kadDepth := depthForPot(k.conns, k.NeighbourhoodSize, k.base) |
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k.conns.EachBin(base, Pof, o, func(po, size int, f func(func(val pot.Val, i int) bool) bool) bool { |
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if startPo > 0 && endPo != k.MaxProxDisplay { |
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@ -432,15 +432,15 @@ func (k *Kademlia) eachAddr(base []byte, o int, f func(*BzzAddr, int) bool) { |
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func (k *Kademlia) NeighbourhoodDepth() (depth int) { |
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k.lock.RLock() |
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defer k.lock.RUnlock() |
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return depthForPot(k.conns, k.MinProxBinSize, k.base) |
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return depthForPot(k.conns, k.NeighbourhoodSize, k.base) |
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} |
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// depthForPot returns the proximity order that defines the distance of
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// the nearest neighbour set with cardinality >= MinProxBinSize
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// if there is altogether less than MinProxBinSize peers it returns 0
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// the nearest neighbour set with cardinality >= NeighbourhoodSize
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// if there is altogether less than NeighbourhoodSize peers it returns 0
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// caller must hold the lock
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func depthForPot(p *pot.Pot, minProxBinSize int, pivotAddr []byte) (depth int) { |
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if p.Size() <= minProxBinSize { |
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func depthForPot(p *pot.Pot, neighbourhoodSize int, pivotAddr []byte) (depth int) { |
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if p.Size() <= neighbourhoodSize { |
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return 0 |
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} |
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@ -448,7 +448,7 @@ func depthForPot(p *pot.Pot, minProxBinSize int, pivotAddr []byte) (depth int) { |
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var size int |
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// determining the depth is a two-step process
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// first we find the proximity bin of the shallowest of the MinProxBinSize peers
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// first we find the proximity bin of the shallowest of the NeighbourhoodSize peers
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// the numeric value of depth cannot be higher than this
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var maxDepth int |
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@ -461,7 +461,7 @@ func depthForPot(p *pot.Pot, minProxBinSize int, pivotAddr []byte) (depth int) { |
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// this means we have all nn-peers.
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// depth is by default set to the bin of the farthest nn-peer
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if size == minProxBinSize { |
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if size == neighbourhoodSize { |
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maxDepth = i |
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return false |
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} |
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@ -538,12 +538,12 @@ func (k *Kademlia) string() string { |
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rows = append(rows, "=========================================================================") |
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rows = append(rows, fmt.Sprintf("%v KΛÐΞMLIΛ hive: queen's address: %x", time.Now().UTC().Format(time.UnixDate), k.BaseAddr()[:3])) |
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rows = append(rows, fmt.Sprintf("population: %d (%d), MinProxBinSize: %d, MinBinSize: %d, MaxBinSize: %d", k.conns.Size(), k.addrs.Size(), k.MinProxBinSize, k.MinBinSize, k.MaxBinSize)) |
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rows = append(rows, fmt.Sprintf("population: %d (%d), NeighbourhoodSize: %d, MinBinSize: %d, MaxBinSize: %d", k.conns.Size(), k.addrs.Size(), k.NeighbourhoodSize, k.MinBinSize, k.MaxBinSize)) |
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liverows := make([]string, k.MaxProxDisplay) |
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peersrows := make([]string, k.MaxProxDisplay) |
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depth := depthForPot(k.conns, k.MinProxBinSize, k.base) |
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depth := depthForPot(k.conns, k.NeighbourhoodSize, k.base) |
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rest := k.conns.Size() |
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k.conns.EachBin(k.base, Pof, 0, func(po, size int, f func(func(val pot.Val, i int) bool) bool) bool { |
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var rowlen int |
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@ -611,10 +611,10 @@ type PeerPot struct { |
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// NewPeerPotMap creates a map of pot record of *BzzAddr with keys
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// as hexadecimal representations of the address.
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// the MinProxBinSize of the passed kademlia is used
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// the NeighbourhoodSize of the passed kademlia is used
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// used for testing only
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// TODO move to separate testing tools file
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func NewPeerPotMap(minProxBinSize int, addrs [][]byte) map[string]*PeerPot { |
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func NewPeerPotMap(neighbourhoodSize int, addrs [][]byte) map[string]*PeerPot { |
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// create a table of all nodes for health check
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np := pot.NewPot(nil, 0) |
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@ -628,7 +628,7 @@ func NewPeerPotMap(minProxBinSize int, addrs [][]byte) map[string]*PeerPot { |
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for i, a := range addrs { |
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// actual kademlia depth
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depth := depthForPot(np, minProxBinSize, a) |
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depth := depthForPot(np, neighbourhoodSize, a) |
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// all nn-peers
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var nns [][]byte |
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@ -670,7 +670,7 @@ func (k *Kademlia) saturation() int { |
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return prev == po && size >= k.MinBinSize |
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}) |
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// TODO evaluate whether this check cannot just as well be done within the eachbin
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depth := depthForPot(k.conns, k.MinProxBinSize, k.base) |
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depth := depthForPot(k.conns, k.NeighbourhoodSize, k.base) |
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if depth < prev { |
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return depth |
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} |
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@ -683,7 +683,7 @@ func (k *Kademlia) saturation() int { |
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// TODO move to separate testing tools file
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func (k *Kademlia) knowNeighbours(addrs [][]byte) (got bool, n int, missing [][]byte) { |
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pm := make(map[string]bool) |
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depth := depthForPot(k.conns, k.MinProxBinSize, k.base) |
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depth := depthForPot(k.conns, k.NeighbourhoodSize, k.base) |
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// create a map with all peers at depth and deeper known in the kademlia
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k.eachAddr(nil, 255, func(p *BzzAddr, po int) bool { |
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// in order deepest to shallowest compared to the kademlia base address
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@ -719,7 +719,11 @@ func (k *Kademlia) knowNeighbours(addrs [][]byte) (got bool, n int, missing [][] |
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// It is used in Healthy function for testing only
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func (k *Kademlia) connectedNeighbours(peers [][]byte) (got bool, n int, missing [][]byte) { |
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pm := make(map[string]bool) |
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depth := depthForPot(k.conns, k.MinProxBinSize, k.base) |
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// create a map with all peers at depth and deeper that are connected in the kademlia
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// in order deepest to shallowest compared to the kademlia base address
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// all bins (except self) are included (0 <= bin <= 255)
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depth := depthForPot(k.conns, k.NeighbourhoodSize, k.base) |
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k.eachConn(nil, 255, func(p *Peer, po int) bool { |
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if po < depth { |
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return false |
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@ -772,7 +776,7 @@ func (k *Kademlia) Healthy(pp *PeerPot) *Health { |
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defer k.lock.RUnlock() |
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gotnn, countgotnn, culpritsgotnn := k.connectedNeighbours(pp.NNSet) |
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knownn, countknownn, culpritsknownn := k.knowNeighbours(pp.NNSet) |
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depth := depthForPot(k.conns, k.MinProxBinSize, k.base) |
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depth := depthForPot(k.conns, k.NeighbourhoodSize, k.base) |
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saturated := k.saturation() < depth |
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log.Trace(fmt.Sprintf("%08x: healthy: knowNNs: %v, gotNNs: %v, saturated: %v\n", k.base, knownn, gotnn, saturated)) |
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return &Health{ |
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lash
6 years ago
committed by
Viktor Trón