package pubsub import ( "math" "sync" "testing" "time" "github.com/libp2p/go-libp2p-core/peer" ) func TestScoreTimeInMesh(t *testing.T) { // Create parameters with reasonable default values mytopic := "mytopic" params := &PeerScoreParams{ AppSpecificScore: func(peer.ID) float64 { return 0 }, Topics: make(map[string]*TopicScoreParams), } topicScoreParams := &TopicScoreParams{ TopicWeight: 0.5, TimeInMeshWeight: 1, TimeInMeshQuantum: time.Millisecond, TimeInMeshCap: 3600, } params.Topics[mytopic] = topicScoreParams peerA := peer.ID("A") // Peer score should start at 0 ps := newPeerScore(params) ps.AddPeer(peerA, "myproto") aScore := ps.Score(peerA) if aScore != 0 { t.Fatal("expected score to start at zero") } // The time in mesh depends on how long the peer has been grafted ps.Graft(peerA, mytopic) elapsed := topicScoreParams.TimeInMeshQuantum * 200 time.Sleep(elapsed) ps.refreshScores() aScore = ps.Score(peerA) expected := topicScoreParams.TopicWeight * topicScoreParams.TimeInMeshWeight * float64(elapsed/topicScoreParams.TimeInMeshQuantum) if aScore < expected { t.Fatalf("Score: %f. Expected >= %f", aScore, expected) } } func TestScoreTimeInMeshCap(t *testing.T) { // Create parameters with reasonable default values mytopic := "mytopic" params := &PeerScoreParams{ AppSpecificScore: func(peer.ID) float64 { return 0 }, Topics: make(map[string]*TopicScoreParams), } topicScoreParams := &TopicScoreParams{ TopicWeight: 0.5, TimeInMeshWeight: 1, TimeInMeshQuantum: time.Millisecond, TimeInMeshCap: 10, } params.Topics[mytopic] = topicScoreParams peerA := peer.ID("A") ps := newPeerScore(params) ps.AddPeer(peerA, "myproto") ps.Graft(peerA, mytopic) elapsed := topicScoreParams.TimeInMeshQuantum * 40 time.Sleep(elapsed) // The time in mesh score has a cap ps.refreshScores() aScore := ps.Score(peerA) expected := topicScoreParams.TopicWeight * topicScoreParams.TimeInMeshWeight * topicScoreParams.TimeInMeshCap variance := 0.5 if !withinVariance(aScore, expected, variance) { t.Fatalf("Score: %f. Expected %f ± %f", aScore, expected, variance*expected) } } func TestScoreFirstMessageDeliveries(t *testing.T) { // Create parameters with reasonable default values mytopic := "mytopic" params := &PeerScoreParams{ AppSpecificScore: func(peer.ID) float64 { return 0 }, Topics: make(map[string]*TopicScoreParams), } topicScoreParams := &TopicScoreParams{ TopicWeight: 1, FirstMessageDeliveriesWeight: 1, FirstMessageDeliveriesDecay: 1.0, // test without decay for now FirstMessageDeliveriesCap: 2000, TimeInMeshQuantum: time.Second, } params.Topics[mytopic] = topicScoreParams peerA := peer.ID("A") ps := newPeerScore(params) ps.AddPeer(peerA, "myproto") ps.Graft(peerA, mytopic) // deliver a bunch of messages from peer A nMessages := 100 for i := 0; i < nMessages; i++ { pbMsg := makeTestMessage(i) pbMsg.TopicIDs = []string{mytopic} msg := Message{ReceivedFrom: peerA, Message: pbMsg} ps.ValidateMessage(&msg) ps.DeliverMessage(&msg) } ps.refreshScores() aScore := ps.Score(peerA) expected := topicScoreParams.TopicWeight * topicScoreParams.FirstMessageDeliveriesWeight * float64(nMessages) if aScore != expected { t.Fatalf("Score: %f. Expected %f", aScore, expected) } } func TestScoreFirstMessageDeliveriesCap(t *testing.T) { // Create parameters with reasonable default values mytopic := "mytopic" params := &PeerScoreParams{ AppSpecificScore: func(peer.ID) float64 { return 0 }, Topics: make(map[string]*TopicScoreParams), } topicScoreParams := &TopicScoreParams{ TopicWeight: 1, FirstMessageDeliveriesWeight: 1, FirstMessageDeliveriesDecay: 1.0, // test without decay for now FirstMessageDeliveriesCap: 50, TimeInMeshQuantum: time.Second, } params.Topics[mytopic] = topicScoreParams peerA := peer.ID("A") ps := newPeerScore(params) ps.AddPeer(peerA, "myproto") ps.Graft(peerA, mytopic) // deliver a bunch of messages from peer A nMessages := 100 for i := 0; i < nMessages; i++ { pbMsg := makeTestMessage(i) pbMsg.TopicIDs = []string{mytopic} msg := Message{ReceivedFrom: peerA, Message: pbMsg} ps.ValidateMessage(&msg) ps.DeliverMessage(&msg) } ps.refreshScores() aScore := ps.Score(peerA) expected := topicScoreParams.TopicWeight * topicScoreParams.FirstMessageDeliveriesWeight * topicScoreParams.FirstMessageDeliveriesCap if aScore != expected { t.Fatalf("Score: %f. Expected %f", aScore, expected) } } func TestScoreFirstMessageDeliveriesDecay(t *testing.T) { // Create parameters with reasonable default values mytopic := "mytopic" params := &PeerScoreParams{ AppSpecificScore: func(peer.ID) float64 { return 0 }, Topics: make(map[string]*TopicScoreParams), } topicScoreParams := &TopicScoreParams{ TopicWeight: 1, FirstMessageDeliveriesWeight: 1, FirstMessageDeliveriesDecay: 0.9, // decay 10% per decay interval FirstMessageDeliveriesCap: 2000, TimeInMeshQuantum: time.Second, } params.Topics[mytopic] = topicScoreParams peerA := peer.ID("A") ps := newPeerScore(params) ps.AddPeer(peerA, "myproto") ps.Graft(peerA, mytopic) // deliver a bunch of messages from peer A nMessages := 100 for i := 0; i < nMessages; i++ { pbMsg := makeTestMessage(i) pbMsg.TopicIDs = []string{mytopic} msg := Message{ReceivedFrom: peerA, Message: pbMsg} ps.ValidateMessage(&msg) ps.DeliverMessage(&msg) } ps.refreshScores() aScore := ps.Score(peerA) expected := topicScoreParams.TopicWeight * topicScoreParams.FirstMessageDeliveriesWeight * topicScoreParams.FirstMessageDeliveriesDecay * float64(nMessages) if aScore != expected { t.Fatalf("Score: %f. Expected %f", aScore, expected) } // refreshing the scores applies the decay param decayIntervals := 10 for i := 0; i < decayIntervals; i++ { ps.refreshScores() expected *= topicScoreParams.FirstMessageDeliveriesDecay } aScore = ps.Score(peerA) if aScore != expected { t.Fatalf("Score: %f. Expected %f", aScore, expected) } } func TestScoreMeshMessageDeliveries(t *testing.T) { // Create parameters with reasonable default values mytopic := "mytopic" params := &PeerScoreParams{ AppSpecificScore: func(peer.ID) float64 { return 0 }, Topics: make(map[string]*TopicScoreParams), } topicScoreParams := &TopicScoreParams{ TopicWeight: 1, MeshMessageDeliveriesWeight: -1, MeshMessageDeliveriesActivation: time.Second, MeshMessageDeliveriesWindow: 10 * time.Millisecond, MeshMessageDeliveriesThreshold: 20, MeshMessageDeliveriesCap: 100, MeshMessageDeliveriesDecay: 1.0, // no decay for this test FirstMessageDeliveriesWeight: 0, TimeInMeshQuantum: time.Second, } params.Topics[mytopic] = topicScoreParams // peer A always delivers the message first. // peer B delivers next (within the delivery window). // peer C delivers outside the delivery window. // we expect peers A and B to have a score of zero, since all other parameter weights are zero. // Peer C should have a negative score. peerA := peer.ID("A") peerB := peer.ID("B") peerC := peer.ID("C") peers := []peer.ID{peerA, peerB, peerC} ps := newPeerScore(params) for _, p := range peers { ps.AddPeer(p, "myproto") ps.Graft(p, mytopic) } // assert that nobody has been penalized yet for not delivering messages before activation time ps.refreshScores() for _, p := range peers { score := ps.Score(p) if score < 0 { t.Fatalf("expected no mesh delivery penalty before activation time, got score %f", score) } } // wait for the activation time to kick in time.Sleep(topicScoreParams.MeshMessageDeliveriesActivation) // deliver a bunch of messages from peer A, with duplicates within the window from peer B, // and duplicates outside the window from peer C. nMessages := 100 wg := sync.WaitGroup{} for i := 0; i < nMessages; i++ { pbMsg := makeTestMessage(i) pbMsg.TopicIDs = []string{mytopic} msg := Message{ReceivedFrom: peerA, Message: pbMsg} ps.ValidateMessage(&msg) ps.DeliverMessage(&msg) msg.ReceivedFrom = peerB ps.DuplicateMessage(&msg) // deliver duplicate from peerC after the window wg.Add(1) time.AfterFunc(topicScoreParams.MeshMessageDeliveriesWindow+(20*time.Millisecond), func() { msg.ReceivedFrom = peerC ps.DuplicateMessage(&msg) wg.Done() }) } wg.Wait() ps.refreshScores() aScore := ps.Score(peerA) bScore := ps.Score(peerB) cScore := ps.Score(peerC) if aScore < 0 { t.Fatalf("Expected non-negative score for peer A, got %f", aScore) } if bScore < 0 { t.Fatalf("Expected non-negative score for peer B, got %f", aScore) } // the penalty is the difference between the threshold and the actual mesh deliveries, squared. // since we didn't deliver anything, this is just the value of the threshold penalty := topicScoreParams.MeshMessageDeliveriesThreshold * topicScoreParams.MeshMessageDeliveriesThreshold expected := topicScoreParams.TopicWeight * topicScoreParams.MeshMessageDeliveriesWeight * penalty if cScore != expected { t.Fatalf("Score: %f. Expected %f", cScore, expected) } } func TestScoreMeshMessageDeliveriesDecay(t *testing.T) { // Create parameters with reasonable default values mytopic := "mytopic" params := &PeerScoreParams{ AppSpecificScore: func(peer.ID) float64 { return 0 }, Topics: make(map[string]*TopicScoreParams), } topicScoreParams := &TopicScoreParams{ TopicWeight: 1, MeshMessageDeliveriesWeight: -1, MeshMessageDeliveriesActivation: 0, MeshMessageDeliveriesWindow: 10 * time.Millisecond, MeshMessageDeliveriesThreshold: 20, MeshMessageDeliveriesCap: 100, MeshMessageDeliveriesDecay: 0.9, FirstMessageDeliveriesWeight: 0, TimeInMeshQuantum: time.Second, } params.Topics[mytopic] = topicScoreParams peerA := peer.ID("A") ps := newPeerScore(params) ps.AddPeer(peerA, "myproto") ps.Graft(peerA, mytopic) // deliver messages from peer A nMessages := 40 for i := 0; i < nMessages; i++ { pbMsg := makeTestMessage(i) pbMsg.TopicIDs = []string{mytopic} msg := Message{ReceivedFrom: peerA, Message: pbMsg} ps.ValidateMessage(&msg) ps.DeliverMessage(&msg) } // we should have a positive score, since we delivered more messages than the threshold ps.refreshScores() aScore := ps.Score(peerA) if aScore < 0 { t.Fatalf("Expected non-negative score for peer A, got %f", aScore) } // we need to refresh enough times for the decay to bring us below the threshold decayedDeliveryCount := float64(nMessages) * topicScoreParams.MeshMessageDeliveriesDecay for i := 0; i < 20; i++ { ps.refreshScores() decayedDeliveryCount *= topicScoreParams.MeshMessageDeliveriesDecay } aScore = ps.Score(peerA) // the penalty is the difference between the threshold and the (decayed) mesh deliveries, squared. deficit := topicScoreParams.MeshMessageDeliveriesThreshold - decayedDeliveryCount penalty := deficit * deficit expected := topicScoreParams.TopicWeight * topicScoreParams.MeshMessageDeliveriesWeight * penalty if aScore != expected { t.Fatalf("Score: %f. Expected %f", aScore, expected) } } func TestScoreMeshFailurePenalty(t *testing.T) { // Create parameters with reasonable default values mytopic := "mytopic" params := &PeerScoreParams{ AppSpecificScore: func(peer.ID) float64 { return 0 }, Topics: make(map[string]*TopicScoreParams), } // the mesh failure penalty is applied when a peer is pruned while their // mesh deliveries are under the threshold. // for this test, we set the mesh delivery threshold, but set // MeshMessageDeliveriesWeight to zero, so the only affect on the score // is from the mesh failure penalty topicScoreParams := &TopicScoreParams{ TopicWeight: 1, MeshFailurePenaltyWeight: -1, MeshFailurePenaltyDecay: 1.0, MeshMessageDeliveriesActivation: 0, MeshMessageDeliveriesWindow: 10 * time.Millisecond, MeshMessageDeliveriesThreshold: 20, MeshMessageDeliveriesCap: 100, MeshMessageDeliveriesDecay: 1.0, MeshMessageDeliveriesWeight: 0, FirstMessageDeliveriesWeight: 0, TimeInMeshQuantum: time.Second, } params.Topics[mytopic] = topicScoreParams peerA := peer.ID("A") peerB := peer.ID("B") peers := []peer.ID{peerA, peerB} ps := newPeerScore(params) for _, p := range peers { ps.AddPeer(p, "myproto") ps.Graft(p, mytopic) } // deliver messages from peer A. peer B does nothing nMessages := 100 for i := 0; i < nMessages; i++ { pbMsg := makeTestMessage(i) pbMsg.TopicIDs = []string{mytopic} msg := Message{ReceivedFrom: peerA, Message: pbMsg} ps.ValidateMessage(&msg) ps.DeliverMessage(&msg) } // peers A and B should both have zero scores, since the failure penalty hasn't been applied yet ps.refreshScores() aScore := ps.Score(peerA) bScore := ps.Score(peerB) if aScore != 0 { t.Errorf("expected peer A to have score 0.0, got %f", aScore) } if bScore != 0 { t.Errorf("expected peer B to have score 0.0, got %f", bScore) } // prune peer B to apply the penalty ps.Prune(peerB, mytopic) ps.refreshScores() aScore = ps.Score(peerA) bScore = ps.Score(peerB) if aScore != 0 { t.Errorf("expected peer A to have score 0.0, got %f", aScore) } // penalty calculation is the same as for MeshMessageDeliveries, but multiplied by MeshFailurePenaltyWeight // instead of MeshMessageDeliveriesWeight penalty := topicScoreParams.MeshMessageDeliveriesThreshold * topicScoreParams.MeshMessageDeliveriesThreshold expected := topicScoreParams.TopicWeight * topicScoreParams.MeshFailurePenaltyWeight * penalty if bScore != expected { t.Fatalf("Score: %f. Expected %f", bScore, expected) } } func TestScoreInvalidMessageDeliveries(t *testing.T) { // Create parameters with reasonable default values mytopic := "mytopic" params := &PeerScoreParams{ AppSpecificScore: func(peer.ID) float64 { return 0 }, Topics: make(map[string]*TopicScoreParams), } topicScoreParams := &TopicScoreParams{ TopicWeight: 1, TimeInMeshQuantum: time.Second, InvalidMessageDeliveriesWeight: -1, InvalidMessageDeliveriesDecay: 1.0, } params.Topics[mytopic] = topicScoreParams peerA := peer.ID("A") ps := newPeerScore(params) ps.AddPeer(peerA, "myproto") ps.Graft(peerA, mytopic) nMessages := 100 for i := 0; i < nMessages; i++ { pbMsg := makeTestMessage(i) pbMsg.TopicIDs = []string{mytopic} msg := Message{ReceivedFrom: peerA, Message: pbMsg} ps.RejectMessage(&msg, rejectInvalidSignature) } ps.refreshScores() aScore := ps.Score(peerA) expected := topicScoreParams.TopicWeight * topicScoreParams.InvalidMessageDeliveriesWeight * float64(nMessages*nMessages) if aScore != expected { t.Fatalf("Score: %f. Expected %f", aScore, expected) } } func TestScoreInvalidMessageDeliveriesDecay(t *testing.T) { // Create parameters with reasonable default values mytopic := "mytopic" params := &PeerScoreParams{ AppSpecificScore: func(peer.ID) float64 { return 0 }, Topics: make(map[string]*TopicScoreParams), } topicScoreParams := &TopicScoreParams{ TopicWeight: 1, TimeInMeshQuantum: time.Second, InvalidMessageDeliveriesWeight: -1, InvalidMessageDeliveriesDecay: 0.9, } params.Topics[mytopic] = topicScoreParams peerA := peer.ID("A") ps := newPeerScore(params) ps.AddPeer(peerA, "myproto") ps.Graft(peerA, mytopic) nMessages := 100 for i := 0; i < nMessages; i++ { pbMsg := makeTestMessage(i) pbMsg.TopicIDs = []string{mytopic} msg := Message{ReceivedFrom: peerA, Message: pbMsg} ps.RejectMessage(&msg, rejectInvalidSignature) } ps.refreshScores() aScore := ps.Score(peerA) expected := topicScoreParams.TopicWeight * topicScoreParams.InvalidMessageDeliveriesWeight * math.Pow(topicScoreParams.InvalidMessageDeliveriesDecay*float64(nMessages), 2) if aScore != expected { t.Fatalf("Score: %f. Expected %f", aScore, expected) } // refresh scores a few times to apply decay for i := 0; i < 10; i++ { ps.refreshScores() expected *= math.Pow(topicScoreParams.InvalidMessageDeliveriesDecay, 2) } aScore = ps.Score(peerA) if aScore != expected { t.Fatalf("Score: %f. Expected %f", aScore, expected) } } func TestScoreRejectMessageDeliveries(t *testing.T) { // this tests adds coverage for the dark corners of rejection tracing mytopic := "mytopic" params := &PeerScoreParams{ AppSpecificScore: func(peer.ID) float64 { return 0 }, Topics: make(map[string]*TopicScoreParams), } topicScoreParams := &TopicScoreParams{ TopicWeight: 1, TimeInMeshQuantum: time.Second, InvalidMessageDeliveriesWeight: -1, InvalidMessageDeliveriesDecay: 1.0, } params.Topics[mytopic] = topicScoreParams peerA := peer.ID("A") peerB := peer.ID("B") ps := newPeerScore(params) ps.AddPeer(peerA, "myproto") ps.AddPeer(peerB, "myproto") pbMsg := makeTestMessage(0) pbMsg.TopicIDs = []string{mytopic} msg := Message{ReceivedFrom: peerA, Message: pbMsg} msg2 := Message{ReceivedFrom: peerB, Message: pbMsg} // these should have no effect in the score ps.RejectMessage(&msg, rejectBlacklstedPeer) ps.RejectMessage(&msg, rejectBlacklistedSource) ps.RejectMessage(&msg, rejectValidationQueueFull) aScore := ps.Score(peerA) expected := 0.0 if aScore != expected { t.Fatalf("Score: %f. Expected %f", aScore, expected) } // insert a record in the message deliveries ps.ValidateMessage(&msg) // this should have no effect in the score, and subsequent duplicate messages should have no // effect either ps.RejectMessage(&msg, rejectValidationThrottled) ps.DuplicateMessage(&msg2) aScore = ps.Score(peerA) expected = 0.0 if aScore != expected { t.Fatalf("Score: %f. Expected %f", aScore, expected) } bScore := ps.Score(peerB) expected = 0.0 if bScore != expected { t.Fatalf("Score: %f. Expected %f", aScore, expected) } // now clear the delivery record ps.deliveries.head.expire = time.Now() time.Sleep(1 * time.Millisecond) ps.deliveries.gc() // insert a record in the message deliveries ps.ValidateMessage(&msg) // this should have no effect in the score, and subsequent duplicate messages should have no // effect either ps.RejectMessage(&msg, rejectValidationIgnored) ps.DuplicateMessage(&msg2) aScore = ps.Score(peerA) expected = 0.0 if aScore != expected { t.Fatalf("Score: %f. Expected %f", aScore, expected) } bScore = ps.Score(peerB) expected = 0.0 if bScore != expected { t.Fatalf("Score: %f. Expected %f", aScore, expected) } // now clear the delivery record ps.deliveries.head.expire = time.Now() time.Sleep(1 * time.Millisecond) ps.deliveries.gc() // insert a new record in the message deliveries ps.ValidateMessage(&msg) // and reject the message to make sure duplicates are also penalized ps.RejectMessage(&msg, rejectValidationFailed) ps.DuplicateMessage(&msg2) aScore = ps.Score(peerA) expected = -1.0 if aScore != expected { t.Fatalf("Score: %f. Expected %f", aScore, expected) } bScore = ps.Score(peerB) expected = -1.0 if bScore != expected { t.Fatalf("Score: %f. Expected %f", bScore, expected) } // now clear the delivery record again ps.deliveries.head.expire = time.Now() time.Sleep(1 * time.Millisecond) ps.deliveries.gc() // insert a new record in the message deliveries ps.ValidateMessage(&msg) // and reject the message after a duplciate has arrived ps.DuplicateMessage(&msg2) ps.RejectMessage(&msg, rejectValidationFailed) aScore = ps.Score(peerA) expected = -4.0 if aScore != expected { t.Fatalf("Score: %f. Expected %f", aScore, expected) } bScore = ps.Score(peerB) expected = -4.0 if bScore != expected { t.Fatalf("Score: %f. Expected %f", bScore, expected) } } func TestScoreApplicationScore(t *testing.T) { // Create parameters with reasonable default values mytopic := "mytopic" var appScoreValue float64 params := &PeerScoreParams{ AppSpecificScore: func(peer.ID) float64 { return appScoreValue }, AppSpecificWeight: 0.5, Topics: make(map[string]*TopicScoreParams), } peerA := peer.ID("A") ps := newPeerScore(params) ps.AddPeer(peerA, "myproto") ps.Graft(peerA, mytopic) for i := -100; i < 100; i++ { appScoreValue = float64(i) ps.refreshScores() aScore := ps.Score(peerA) expected := float64(i) * params.AppSpecificWeight if aScore != expected { t.Errorf("expected peer score to equal app-specific score %f, got %f", expected, aScore) } } } func TestScoreIPColocation(t *testing.T) { // Create parameters with reasonable default values mytopic := "mytopic" params := &PeerScoreParams{ AppSpecificScore: func(peer.ID) float64 { return 0 }, IPColocationFactorThreshold: 1, IPColocationFactorWeight: -1, Topics: make(map[string]*TopicScoreParams), } peerA := peer.ID("A") peerB := peer.ID("B") peerC := peer.ID("C") peerD := peer.ID("D") peers := []peer.ID{peerA, peerB, peerC, peerD} ps := newPeerScore(params) for _, p := range peers { ps.AddPeer(p, "myproto") ps.Graft(p, mytopic) } // peerA should have no penalty, but B, C, and D should be penalized for sharing an IP setIPsForPeer(t, ps, peerA, "1.2.3.4") setIPsForPeer(t, ps, peerB, "2.3.4.5") setIPsForPeer(t, ps, peerC, "2.3.4.5", "3.4.5.6") setIPsForPeer(t, ps, peerD, "2.3.4.5") ps.refreshScores() aScore := ps.Score(peerA) bScore := ps.Score(peerB) cScore := ps.Score(peerC) dScore := ps.Score(peerD) if aScore != 0 { t.Errorf("expected peer A to have score 0.0, got %f", aScore) } nShared := 3 ipSurplus := nShared - params.IPColocationFactorThreshold penalty := ipSurplus * ipSurplus expected := params.IPColocationFactorWeight * float64(penalty) for _, score := range []float64{bScore, cScore, dScore} { if score != expected { t.Fatalf("Score: %f. Expected %f", score, expected) } } } func TestScoreBehaviourPenalty(t *testing.T) { params := &PeerScoreParams{ AppSpecificScore: func(peer.ID) float64 { return 0 }, BehaviourPenaltyWeight: -1, BehaviourPenaltyDecay: 0.99, } peerA := peer.ID("A") var ps *peerScore // first check AddPenalty on a nil peerScore ps.AddPenalty(peerA, 1) aScore := ps.Score(peerA) if aScore != 0 { t.Errorf("expected peer score to be 0, got %f", aScore) } // instantiate the peerScore ps = newPeerScore(params) // next AddPenalty on a non-existent peer ps.AddPenalty(peerA, 1) aScore = ps.Score(peerA) if aScore != 0 { t.Errorf("expected peer score to be 0, got %f", aScore) } // add the peer and test penalties ps.AddPeer(peerA, "myproto") aScore = ps.Score(peerA) if aScore != 0 { t.Errorf("expected peer score to be 0, got %f", aScore) } ps.AddPenalty(peerA, 1) aScore = ps.Score(peerA) if aScore != -1 { t.Errorf("expected peer score to be -1, got %f", aScore) } ps.AddPenalty(peerA, 1) aScore = ps.Score(peerA) if aScore != -4 { t.Errorf("expected peer score to be -4, got %f", aScore) } ps.refreshScores() aScore = ps.Score(peerA) if aScore != -3.9204 { t.Errorf("expected peer score to be -3.9204, got %f", aScore) } } func TestScoreRetention(t *testing.T) { // Create parameters with reasonable default values mytopic := "mytopic" params := &PeerScoreParams{ AppSpecificScore: func(peer.ID) float64 { return -1000 }, AppSpecificWeight: 1.0, Topics: make(map[string]*TopicScoreParams), RetainScore: time.Second, } peerA := peer.ID("A") ps := newPeerScore(params) ps.AddPeer(peerA, "myproto") ps.Graft(peerA, mytopic) // score should equal -1000 (app specific score) expected := float64(-1000) ps.refreshScores() aScore := ps.Score(peerA) if aScore != expected { t.Fatalf("Score: %f. Expected %f", aScore, expected) } // disconnect & wait half of RetainScore time. should still have negative score ps.RemovePeer(peerA) delay := params.RetainScore / time.Duration(2) time.Sleep(delay) ps.refreshScores() aScore = ps.Score(peerA) if aScore != expected { t.Fatalf("Score: %f. Expected %f", aScore, expected) } // wait remaining time (plus a little slop) and the score should reset to zero time.Sleep(delay + (50 * time.Millisecond)) ps.refreshScores() aScore = ps.Score(peerA) if aScore != 0 { t.Fatalf("Score: %f. Expected 0.0", aScore) } } func withinVariance(score float64, expected float64, variance float64) bool { if expected >= 0 { return score > expected*(1-variance) && score < expected*(1+variance) } return score > expected*(1+variance) && score < expected*(1-variance) } // hack to set IPs for a peer without having to spin up real hosts with shared IPs func setIPsForPeer(t *testing.T, ps *peerScore, p peer.ID, ips ...string) { t.Helper() ps.setIPs(p, ips, []string{}) pstats, ok := ps.peerStats[p] if !ok { t.Fatal("unable to get peerStats") } pstats.ips = ips }