Heap queue stores only peers that were not added to p2p server (#979)
* Heap queue stores only peers that were not added to p2p server The primary goal of this change is to keep whitelist of peers that are managed by topic pool while also preventing same peer from being selected from heap queue multiple times.
This commit is contained in:
parent
4dfbef3867
commit
345b152a8b
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@ -14,6 +14,11 @@ import (
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"github.com/status-im/status-go/geth/params"
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"github.com/status-im/status-go/geth/params"
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)
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)
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const (
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// notQueuedIndex used to define that item is not queued in the heap queue.
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notQueuedIndex = -1
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)
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// NewTopicPool returns instance of TopicPool
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// NewTopicPool returns instance of TopicPool
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func NewTopicPool(topic discv5.Topic, limits params.Limits, slowMode, fastMode time.Duration, cache *Cache) *TopicPool {
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func NewTopicPool(topic discv5.Topic, limits params.Limits, slowMode, fastMode time.Duration, cache *Cache) *TopicPool {
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pool := TopicPool{
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pool := TopicPool{
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@ -22,13 +27,13 @@ func NewTopicPool(topic discv5.Topic, limits params.Limits, slowMode, fastMode t
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fastMode: fastMode,
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fastMode: fastMode,
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slowMode: slowMode,
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slowMode: slowMode,
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fastModeTimeout: DefaultTopicFastModeTimeout,
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fastModeTimeout: DefaultTopicFastModeTimeout,
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peerPool: make(map[discv5.NodeID]*peerInfoItem),
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pendingPeers: make(map[discv5.NodeID]*peerInfoItem),
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peerPoolQueue: make(peerPriorityQueue, 0),
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discoveredPeersQueue: make(peerPriorityQueue, 0),
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connectedPeers: make(map[discv5.NodeID]*peerInfo),
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connectedPeers: make(map[discv5.NodeID]*peerInfo),
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cache: cache,
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cache: cache,
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}
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}
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heap.Init(&pool.peerPoolQueue)
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heap.Init(&pool.discoveredPeersQueue)
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return &pool
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return &pool
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}
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}
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@ -53,55 +58,67 @@ type TopicPool struct {
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period chan time.Duration
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period chan time.Duration
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fastModeTimeoutCancel chan struct{}
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fastModeTimeoutCancel chan struct{}
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peerPool map[discv5.NodeID]*peerInfoItem // found but not connected peers
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pendingPeers map[discv5.NodeID]*peerInfoItem // contains found and requested to be connected peers but not confirmed
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peerPoolQueue peerPriorityQueue // priority queue to find the most recent peer
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discoveredPeersQueue peerPriorityQueue // priority queue to find the most recently discovered peers; does not containt peers requested to connect
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connectedPeers map[discv5.NodeID]*peerInfo // currently connected peers
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connectedPeers map[discv5.NodeID]*peerInfo // currently connected peers
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cache *Cache
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cache *Cache
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}
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}
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func (t *TopicPool) addToPeerPool(peer *peerInfo) {
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func (t *TopicPool) addToPendingPeers(peer *peerInfo) {
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if _, ok := t.peerPool[peer.node.ID]; ok {
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if _, ok := t.pendingPeers[peer.node.ID]; ok {
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return
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return
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}
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}
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item := &peerInfoItem{peerInfo: peer}
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t.pendingPeers[peer.node.ID] = &peerInfoItem{
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t.peerPool[peer.node.ID] = item
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peerInfo: peer,
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heap.Push(&t.peerPoolQueue, item)
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index: notQueuedIndex,
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}
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}
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}
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func (t *TopicPool) removeFromPeerPool(nodeID discv5.NodeID) {
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// addToQueue adds the passed peer to the queue if it is already pending.
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peer, ok := t.peerPool[nodeID]
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func (t *TopicPool) addToQueue(peer *peerInfo) {
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if !ok {
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if p, ok := t.pendingPeers[peer.node.ID]; ok {
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return
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heap.Push(&t.discoveredPeersQueue, p)
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}
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}
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delete(t.peerPool, nodeID)
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heap.Remove(&t.peerPoolQueue, peer.index)
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}
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}
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func (t *TopicPool) popFromPeerPool() *peerInfo {
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func (t *TopicPool) popFromQueue() *peerInfo {
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if t.peerPoolQueue.Len() == 0 {
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if t.discoveredPeersQueue.Len() == 0 {
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return nil
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return nil
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}
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}
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item := heap.Pop(&t.peerPoolQueue).(*peerInfoItem)
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item := heap.Pop(&t.discoveredPeersQueue).(*peerInfoItem)
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delete(t.peerPool, item.node.ID)
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item.index = notQueuedIndex
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return item.peerInfo
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return item.peerInfo
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}
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}
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func (t *TopicPool) updatePeerInPool(nodeID discv5.NodeID, time mclock.AbsTime) {
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func (t *TopicPool) removeFromPendingPeers(nodeID discv5.NodeID) {
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peer, ok := t.peerPool[nodeID]
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peer, ok := t.pendingPeers[nodeID]
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if !ok {
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return
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}
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delete(t.pendingPeers, nodeID)
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if peer.index != notQueuedIndex {
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heap.Remove(&t.discoveredPeersQueue, peer.index)
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}
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}
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func (t *TopicPool) updatePendingPeer(nodeID discv5.NodeID, time mclock.AbsTime) {
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peer, ok := t.pendingPeers[nodeID]
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if !ok {
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if !ok {
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return
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return
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}
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}
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peer.discoveredTime = mclock.Now()
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peer.discoveredTime = mclock.Now()
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heap.Fix(&t.peerPoolQueue, peer.index)
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if peer.index != notQueuedIndex {
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heap.Fix(&t.discoveredPeersQueue, peer.index)
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}
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}
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}
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func (t *TopicPool) movePeerFromPoolToConnected(nodeID discv5.NodeID) {
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func (t *TopicPool) movePeerFromPoolToConnected(nodeID discv5.NodeID) {
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peer, ok := t.peerPool[nodeID]
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peer, ok := t.pendingPeers[nodeID]
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if !ok {
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if !ok {
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return
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return
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}
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}
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t.removeFromPeerPool(nodeID)
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t.removeFromPendingPeers(nodeID)
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t.connectedPeers[nodeID] = peer.peerInfo
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t.connectedPeers[nodeID] = peer.peerInfo
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}
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}
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@ -192,10 +209,11 @@ func (t *TopicPool) ConfirmAdded(server *p2p.Server, nodeID discover.NodeID) {
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discV5NodeID := discv5.NodeID(nodeID)
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discV5NodeID := discv5.NodeID(nodeID)
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// inbound connection
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// inbound connection
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peer, exist := t.peerPool[discV5NodeID]
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peerInfoItem, ok := t.pendingPeers[discV5NodeID]
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if !exist {
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if !ok {
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return
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return
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}
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}
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peer := peerInfoItem.peerInfo // get explicit reference
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// established connection means that the node
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// established connection means that the node
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// is a viable candidate for a connection and can be cached
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// is a viable candidate for a connection and can be cached
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@ -203,15 +221,15 @@ func (t *TopicPool) ConfirmAdded(server *p2p.Server, nodeID discover.NodeID) {
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log.Error("failed to persist a peer", "error", err)
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log.Error("failed to persist a peer", "error", err)
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}
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}
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t.movePeerFromPoolToConnected(discV5NodeID)
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// if the upper limit is already reached, drop this peer
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// if the upper limit is already reached, drop this peer
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if len(t.connectedPeers) == t.limits.Max {
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if len(t.connectedPeers) > t.limits.Max {
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log.Debug("max limit is reached drop the peer", "ID", nodeID, "topic", t.topic)
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log.Debug("max limit is reached drop the peer", "ID", nodeID, "topic", t.topic)
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peer.dismissed = true
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peer.dismissed = true
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t.removeServerPeer(server, peer.peerInfo)
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t.removeServerPeer(server, peer)
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return
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return
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}
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}
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t.movePeerFromPoolToConnected(discV5NodeID)
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// make sure `dismissed` is reset
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// make sure `dismissed` is reset
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peer.dismissed = false
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peer.dismissed = false
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@ -242,10 +260,13 @@ func (t *TopicPool) ConfirmDropped(server *p2p.Server, nodeID discover.NodeID) b
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log.Debug("disconnect", "ID", nodeID, "dismissed", peer.dismissed)
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log.Debug("disconnect", "ID", nodeID, "dismissed", peer.dismissed)
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delete(t.connectedPeers, discV5NodeID)
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// Peer was removed by us because exceeded the limit.
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// Peer was removed by us because exceeded the limit.
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// Add it back to the pool as it can be useful in the future.
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// Add it back to the pool as it can be useful in the future.
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if peer.dismissed {
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if peer.dismissed {
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t.addToPeerPool(peer)
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t.addToPendingPeers(peer)
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// use queue for peers that weren't added to p2p server
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t.addToQueue(peer)
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return false
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return false
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}
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}
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@ -254,7 +275,6 @@ func (t *TopicPool) ConfirmDropped(server *p2p.Server, nodeID discover.NodeID) b
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// That's why we need to call `removeServerPeer` manually.
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// That's why we need to call `removeServerPeer` manually.
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t.removeServerPeer(server, peer)
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t.removeServerPeer(server, peer)
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delete(t.connectedPeers, discV5NodeID)
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if err := t.cache.RemovePeer(discV5NodeID, t.topic); err != nil {
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if err := t.cache.RemovePeer(discV5NodeID, t.topic); err != nil {
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log.Error("failed to remove peer from cache", "error", err)
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log.Error("failed to remove peer from cache", "error", err)
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}
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}
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@ -276,7 +296,7 @@ func (t *TopicPool) AddPeerFromTable(server *p2p.Server) *discv5.Node {
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// If it did not expire yet, it will be added to the server.
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// If it did not expire yet, it will be added to the server.
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// TODO(adam): investigate if it's worth to keep the peer in the queue
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// TODO(adam): investigate if it's worth to keep the peer in the queue
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// until the server confirms it is added and in the meanwhile only adjust its priority.
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// until the server confirms it is added and in the meanwhile only adjust its priority.
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peer := t.popFromPeerPool()
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peer := t.popFromQueue()
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if peer != nil && mclock.Now() < peer.discoveredTime+mclock.AbsTime(expirationPeriod) {
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if peer != nil && mclock.Now() < peer.discoveredTime+mclock.AbsTime(expirationPeriod) {
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t.addServerPeer(server, peer)
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t.addServerPeer(server, peer)
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return peer.node
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return peer.node
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@ -360,10 +380,10 @@ func (t *TopicPool) processFoundNode(server *p2p.Server, node *discv5.Node) {
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return
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return
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}
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}
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if _, ok := t.peerPool[node.ID]; ok {
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if _, ok := t.pendingPeers[node.ID]; ok {
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t.updatePeerInPool(node.ID, mclock.Now())
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t.updatePendingPeer(node.ID, mclock.Now())
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} else {
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} else {
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t.addToPeerPool(&peerInfo{
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t.addToPendingPeers(&peerInfo{
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discoveredTime: mclock.Now(),
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discoveredTime: mclock.Now(),
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node: node,
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node: node,
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})
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})
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@ -371,7 +391,9 @@ func (t *TopicPool) processFoundNode(server *p2p.Server, node *discv5.Node) {
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// the upper limit is not reached, so let's add this peer
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// the upper limit is not reached, so let's add this peer
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if len(t.connectedPeers) < t.limits.Max {
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if len(t.connectedPeers) < t.limits.Max {
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t.addServerPeer(server, t.peerPool[node.ID].peerInfo)
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t.addServerPeer(server, t.pendingPeers[node.ID].peerInfo)
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} else {
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t.addToQueue(t.pendingPeers[node.ID].peerInfo)
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}
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}
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}
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}
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@ -130,23 +130,24 @@ func (s *TopicPoolSuite) TestNewPeerSelectedOnDrop() {
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s.topicPool.processFoundNode(s.peer, peer1)
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s.topicPool.processFoundNode(s.peer, peer1)
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s.topicPool.processFoundNode(s.peer, peer2)
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s.topicPool.processFoundNode(s.peer, peer2)
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s.topicPool.processFoundNode(s.peer, peer3)
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s.topicPool.processFoundNode(s.peer, peer3)
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s.Len(s.topicPool.peerPool, 3)
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s.Len(s.topicPool.pendingPeers, 3)
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s.Len(s.topicPool.peerPoolQueue, 3)
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s.Len(s.topicPool.discoveredPeersQueue, 0)
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s.topicPool.ConfirmAdded(s.peer, discover.NodeID(peer1.ID))
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s.topicPool.ConfirmAdded(s.peer, discover.NodeID(peer1.ID))
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s.Contains(s.topicPool.connectedPeers, peer1.ID)
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s.Contains(s.topicPool.connectedPeers, peer1.ID)
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s.topicPool.ConfirmAdded(s.peer, discover.NodeID(peer2.ID))
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s.topicPool.ConfirmAdded(s.peer, discover.NodeID(peer2.ID))
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s.Contains(s.topicPool.connectedPeers, peer2.ID)
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s.Contains(s.topicPool.connectedPeers, peer2.ID)
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s.Len(s.topicPool.peerPool, 1)
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s.topicPool.ConfirmAdded(s.peer, discover.NodeID(peer3.ID))
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s.Len(s.topicPool.peerPoolQueue, 1)
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s.topicPool.ConfirmDropped(s.peer, discover.NodeID(peer3.ID))
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s.Contains(s.topicPool.pendingPeers, peer3.ID)
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s.Len(s.topicPool.pendingPeers, 1)
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s.Len(s.topicPool.discoveredPeersQueue, 1)
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// drop peer1
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// drop peer1
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s.True(s.topicPool.ConfirmDropped(s.peer, discover.NodeID(peer1.ID)))
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s.True(s.topicPool.ConfirmDropped(s.peer, discover.NodeID(peer1.ID)))
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s.NotContains(s.topicPool.connectedPeers, peer1.ID)
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s.NotContains(s.topicPool.connectedPeers, peer1.ID)
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// add peer from the pool
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// add peer from the pool
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s.Equal(peer3.ID, s.topicPool.AddPeerFromTable(s.peer).ID)
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s.Equal(peer3.ID, s.topicPool.AddPeerFromTable(s.peer).ID)
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s.Len(s.topicPool.peerPool, 0)
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s.Len(s.topicPool.pendingPeers, 1)
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s.Len(s.topicPool.peerPoolQueue, 0)
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s.Len(s.topicPool.discoveredPeersQueue, 0)
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}
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}
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func (s *TopicPoolSuite) TestRequestedDoesntRemove() {
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func (s *TopicPoolSuite) TestRequestedDoesntRemove() {
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@ -160,12 +161,12 @@ func (s *TopicPoolSuite) TestRequestedDoesntRemove() {
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s.topicPool.ConfirmAdded(s.peer, discover.NodeID(peer1.ID))
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s.topicPool.ConfirmAdded(s.peer, discover.NodeID(peer1.ID))
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s.topicPool.ConfirmAdded(s.peer, discover.NodeID(peer2.ID))
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s.topicPool.ConfirmAdded(s.peer, discover.NodeID(peer2.ID))
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s.False(s.topicPool.connectedPeers[peer1.ID].dismissed)
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s.False(s.topicPool.connectedPeers[peer1.ID].dismissed)
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s.True(s.topicPool.peerPool[peer2.ID].dismissed)
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s.True(s.topicPool.connectedPeers[peer2.ID].dismissed)
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s.topicPool.ConfirmDropped(s.peer, discover.NodeID(peer2.ID))
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s.topicPool.ConfirmDropped(s.peer, discover.NodeID(peer2.ID))
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s.Contains(s.topicPool.peerPool, peer2.ID)
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s.Contains(s.topicPool.pendingPeers, peer2.ID)
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s.NotContains(s.topicPool.connectedPeers, peer2.ID)
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s.NotContains(s.topicPool.connectedPeers, peer2.ID)
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s.topicPool.ConfirmDropped(s.peer, discover.NodeID(peer1.ID))
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s.topicPool.ConfirmDropped(s.peer, discover.NodeID(peer1.ID))
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s.NotContains(s.topicPool.peerPool, peer1.ID)
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s.NotContains(s.topicPool.pendingPeers, peer1.ID)
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s.NotContains(s.topicPool.connectedPeers, peer1.ID)
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s.NotContains(s.topicPool.connectedPeers, peer1.ID)
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}
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}
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@ -182,10 +183,65 @@ func (s *TopicPoolSuite) TestTheMostRecentPeerIsSelected() {
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s.topicPool.processFoundNode(s.peer, peer2)
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s.topicPool.processFoundNode(s.peer, peer2)
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s.topicPool.processFoundNode(s.peer, peer3)
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s.topicPool.processFoundNode(s.peer, peer3)
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s.topicPool.ConfirmAdded(s.peer, discover.NodeID(peer1.ID))
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s.topicPool.ConfirmAdded(s.peer, discover.NodeID(peer1.ID))
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s.topicPool.ConfirmAdded(s.peer, discover.NodeID(peer2.ID))
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s.topicPool.ConfirmAdded(s.peer, discover.NodeID(peer3.ID))
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s.topicPool.ConfirmDropped(s.peer, discover.NodeID(peer2.ID))
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s.topicPool.ConfirmDropped(s.peer, discover.NodeID(peer3.ID))
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// peer1 has dropped
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// peer1 has dropped
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s.topicPool.ConfirmDropped(s.peer, discover.NodeID(peer1.ID))
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s.topicPool.ConfirmDropped(s.peer, discover.NodeID(peer1.ID))
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// and peer3 is take from the pool as the most recent
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// and peer3 is take from the pool as the most recent
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s.True(s.topicPool.peerPool[peer2.ID].discoveredTime < s.topicPool.peerPool[peer3.ID].discoveredTime)
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s.True(s.topicPool.pendingPeers[peer2.ID].discoveredTime < s.topicPool.pendingPeers[peer3.ID].discoveredTime)
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s.Equal(peer3.ID, s.topicPool.AddPeerFromTable(s.peer).ID)
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s.Equal(peer3.ID, s.topicPool.AddPeerFromTable(s.peer).ID)
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}
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}
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func (s *TopicPoolSuite) TestSelectPeerAfterMaxLimit() {
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s.topicPool.limits = params.NewLimits(1, 1)
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peer1 := discv5.NewNode(discv5.NodeID{1}, s.peer.Self().IP, 32311, 32311)
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peer2 := discv5.NewNode(discv5.NodeID{2}, s.peer.Self().IP, 32311, 32311)
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peer3 := discv5.NewNode(discv5.NodeID{3}, s.peer.Self().IP, 32311, 32311)
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s.topicPool.processFoundNode(s.peer, peer1)
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s.topicPool.processFoundNode(s.peer, peer2)
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s.topicPool.ConfirmAdded(s.peer, discover.NodeID(peer1.ID))
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s.topicPool.ConfirmAdded(s.peer, discover.NodeID(peer2.ID))
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s.topicPool.ConfirmDropped(s.peer, discover.NodeID(peer2.ID))
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s.Len(s.topicPool.pendingPeers, 1)
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s.Contains(s.topicPool.pendingPeers, peer2.ID)
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||||||
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s.topicPool.processFoundNode(s.peer, peer3)
|
||||||
|
s.Len(s.topicPool.pendingPeers, 2)
|
||||||
|
s.Contains(s.topicPool.pendingPeers, peer3.ID)
|
||||||
|
s.Equal(peer3, s.topicPool.AddPeerFromTable(s.peer))
|
||||||
|
}
|
||||||
|
|
||||||
|
func (s *TopicPoolSuite) TestReplacementPeerIsCounted() {
|
||||||
|
s.topicPool.limits = params.NewLimits(1, 1)
|
||||||
|
|
||||||
|
peer1 := discv5.NewNode(discv5.NodeID{1}, s.peer.Self().IP, 32311, 32311)
|
||||||
|
peer2 := discv5.NewNode(discv5.NodeID{2}, s.peer.Self().IP, 32311, 32311)
|
||||||
|
s.topicPool.processFoundNode(s.peer, peer1)
|
||||||
|
s.topicPool.processFoundNode(s.peer, peer2)
|
||||||
|
s.topicPool.ConfirmAdded(s.peer, discover.NodeID(peer1.ID))
|
||||||
|
s.topicPool.ConfirmAdded(s.peer, discover.NodeID(peer2.ID))
|
||||||
|
s.topicPool.ConfirmDropped(s.peer, discover.NodeID(peer2.ID))
|
||||||
|
s.topicPool.ConfirmDropped(s.peer, discover.NodeID(peer1.ID))
|
||||||
|
|
||||||
|
s.NotContains(s.topicPool.pendingPeers, peer1.ID)
|
||||||
|
s.NotContains(s.topicPool.connectedPeers, peer1.ID)
|
||||||
|
s.Contains(s.topicPool.pendingPeers, peer2.ID)
|
||||||
|
s.topicPool.ConfirmAdded(s.peer, discover.NodeID(peer2.ID))
|
||||||
|
s.True(s.topicPool.MaxReached())
|
||||||
|
}
|
||||||
|
|
||||||
|
func (s *TopicPoolSuite) TestPeerDontAddTwice() {
|
||||||
|
s.topicPool.limits = params.NewLimits(1, 1)
|
||||||
|
|
||||||
|
peer1 := discv5.NewNode(discv5.NodeID{1}, s.peer.Self().IP, 32311, 32311)
|
||||||
|
peer2 := discv5.NewNode(discv5.NodeID{2}, s.peer.Self().IP, 32311, 32311)
|
||||||
|
s.topicPool.processFoundNode(s.peer, peer1)
|
||||||
|
s.topicPool.processFoundNode(s.peer, peer2)
|
||||||
|
s.topicPool.ConfirmAdded(s.peer, discover.NodeID(peer1.ID))
|
||||||
|
// peer2 already added to p2p server no reason to add it again
|
||||||
|
s.Nil(s.topicPool.AddPeerFromTable(s.peer))
|
||||||
|
}
|
||||||
|
|
Loading…
Reference in New Issue