waku/v2/discv5/discover_test.go
package discv5
import (
"context"
"testing"
"time"
dto "github.com/prometheus/client_model/go"
wps "github.com/waku-org/go-waku/waku/v2/peerstore"
wakuproto "github.com/waku-org/go-waku/waku/v2/protocol"
"github.com/waku-org/go-waku/waku/v2/service"
"go.uber.org/zap"
"github.com/ethereum/go-ethereum/p2p/enode"
"github.com/prometheus/client_golang/prometheus"
wenr "github.com/waku-org/go-waku/waku/v2/protocol/enr"
"github.com/stretchr/testify/require"
"github.com/waku-org/go-waku/tests"
"github.com/waku-org/go-waku/waku/v2/utils"
)
func discoverFilterOnDemand(iterator enode.Iterator, maxCount int) ([]service.PeerData, error) {
log := utils.Logger()
var peers []service.PeerData
ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
defer cancel()
//Iterate and fill peers.
defer iterator.Close()
for iterator.Next() {
pInfo, err := wenr.EnodeToPeerInfo(iterator.Node())
if err != nil {
continue
}
pData := service.PeerData{
Origin: wps.Discv5,
ENR: iterator.Node(),
AddrInfo: *pInfo,
}
peers = append(peers, pData)
log.Info("found peer", zap.String("ID", pData.AddrInfo.ID.String()))
if len(peers) >= maxCount {
log.Info("found required number of nodes, stopping on demand discovery")
break
}
select {
case <-ctx.Done():
log.Error("failed to find peers for shard and services", zap.Error(ctx.Err()))
return nil, ctx.Err()
default:
}
}
return peers, nil
}
func TestDiscV5(t *testing.T) {
// Host1 <-> Host2 <-> Host3
// Host4(No waku capabilities) <-> Host2
// H1
host1, _, prvKey1 := tests.CreateHost(t)
udpPort1, err := tests.FindFreeUDPPort(t, "127.0.0.1", 3)
require.NoError(t, err)
ip1, _ := tests.ExtractIP(host1.Addrs()[0])
l1, err := tests.NewLocalnode(prvKey1, ip1, udpPort1, wenr.NewWakuEnrBitfield(true, true, true, true), nil, utils.Logger())
require.NoError(t, err)
peerconn1 := NewTestPeerDiscoverer()
d1, err := NewDiscoveryV5(prvKey1, l1, peerconn1, prometheus.DefaultRegisterer, utils.Logger(), WithUDPPort(uint(udpPort1)))
require.NoError(t, err)
d1.SetHost(host1)
// H2
host2, _, prvKey2 := tests.CreateHost(t)
ip2, _ := tests.ExtractIP(host2.Addrs()[0])
udpPort2, err := tests.FindFreeUDPPort(t, "127.0.0.1", 3)
require.NoError(t, err)
l2, err := tests.NewLocalnode(prvKey2, ip2, udpPort2, wenr.NewWakuEnrBitfield(true, true, true, true), nil, utils.Logger())
require.NoError(t, err)
peerconn2 := NewTestPeerDiscoverer()
d2, err := NewDiscoveryV5(prvKey2, l2, peerconn2, prometheus.DefaultRegisterer, utils.Logger(), WithUDPPort(uint(udpPort2)), WithBootnodes([]*enode.Node{d1.localnode.Node()}))
require.NoError(t, err)
d2.SetHost(host2)
// H3
host3, _, prvKey3 := tests.CreateHost(t)
ip3, _ := tests.ExtractIP(host3.Addrs()[0])
udpPort3, err := tests.FindFreeUDPPort(t, "127.0.0.1", 3)
require.NoError(t, err)
l3, err := tests.NewLocalnode(prvKey3, ip3, udpPort3, wenr.NewWakuEnrBitfield(true, true, true, true), nil, utils.Logger())
require.NoError(t, err)
peerconn3 := NewTestPeerDiscoverer()
d3, err := NewDiscoveryV5(prvKey3, l3, peerconn3, prometheus.DefaultRegisterer, utils.Logger(), WithUDPPort(uint(udpPort3)), WithBootnodes([]*enode.Node{d2.localnode.Node()}))
require.NoError(t, err)
d3.SetHost(host3)
// H4 doesn't have any Waku capabilities
host4, _, prvKey4 := tests.CreateHost(t)
ip4, _ := tests.ExtractIP(host2.Addrs()[0])
udpPort4, err := tests.FindFreeUDPPort(t, "127.0.0.1", 3)
require.NoError(t, err)
l4, err := tests.NewLocalnode(prvKey4, ip4, udpPort4, 0, nil, utils.Logger())
require.NoError(t, err)
peerconn4 := NewTestPeerDiscoverer()
d4, err := NewDiscoveryV5(prvKey4, l4, peerconn4, prometheus.DefaultRegisterer, utils.Logger(), WithUDPPort(uint(udpPort4)), WithBootnodes([]*enode.Node{d2.localnode.Node()}))
require.NoError(t, err)
d2.SetHost(host2)
defer d1.Stop()
defer d2.Stop()
defer d3.Stop()
defer d4.Stop()
err = d1.Start(context.Background())
require.NoError(t, err)
err = d2.Start(context.Background())
require.NoError(t, err)
err = d3.Start(context.Background())
require.NoError(t, err)
err = d4.Start(context.Background())
require.NoError(t, err)
time.Sleep(2 * time.Second) // Wait for nodes to be discovered
require.True(t, peerconn3.HasPeer(host1.ID()) && peerconn3.HasPeer(host2.ID()))
require.False(t, peerconn3.HasPeer(host4.ID())) //host4 should not be discoverable, rather filtered out.
d3.Stop()
peerconn3.Clear()
// Restart peer search
err = d3.Start(context.Background())
require.NoError(t, err)
time.Sleep(2 * time.Second) // Wait for nodes to be discovered
require.True(t, peerconn3.HasPeer(host1.ID()) && peerconn3.HasPeer(host2.ID()))
require.False(t, peerconn3.HasPeer(host4.ID())) //host4 should not be discoverable, rather filtered out.
}
func TestDiscV5WithCapabilitiesFilter(t *testing.T) {
// H1
host1, _, prvKey1 := tests.CreateHost(t)
udpPort1, err := tests.FindFreeUDPPort(t, "127.0.0.1", 3)
require.NoError(t, err)
ip1, _ := tests.ExtractIP(host1.Addrs()[0])
l1, err := tests.NewLocalnode(prvKey1, ip1, udpPort1, wenr.NewWakuEnrBitfield(true, true, true, true), nil, utils.Logger())
require.NoError(t, err)
peerconn1 := NewTestPeerDiscoverer()
d1, err := NewDiscoveryV5(prvKey1, l1, peerconn1, prometheus.DefaultRegisterer, utils.Logger(), WithUDPPort(uint(udpPort1)))
require.NoError(t, err)
d1.SetHost(host1)
// H2
host2, _, prvKey2 := tests.CreateHost(t)
ip2, _ := tests.ExtractIP(host2.Addrs()[0])
udpPort2, err := tests.FindFreeUDPPort(t, "127.0.0.1", 3)
require.NoError(t, err)
l2, err := tests.NewLocalnode(prvKey2, ip2, udpPort2, wenr.NewWakuEnrBitfield(true, true, false, true), nil, utils.Logger())
require.NoError(t, err)
peerconn2 := NewTestPeerDiscoverer()
d2, err := NewDiscoveryV5(prvKey2, l2, peerconn2, prometheus.DefaultRegisterer, utils.Logger(), WithUDPPort(uint(udpPort2)))
require.NoError(t, err)
d2.SetHost(host2)
// H3
host3, _, prvKey3 := tests.CreateHost(t)
ip3, _ := tests.ExtractIP(host3.Addrs()[0])
udpPort3, err := tests.FindFreeUDPPort(t, "127.0.0.1", 3)
require.NoError(t, err)
l3, err := tests.NewLocalnode(prvKey3, ip3, udpPort3, wenr.NewWakuEnrBitfield(true, true, false, true), nil, utils.Logger())
require.NoError(t, err)
peerconn3 := NewTestPeerDiscoverer()
d3, err := NewDiscoveryV5(prvKey3, l3, peerconn3, prometheus.DefaultRegisterer, utils.Logger(), WithUDPPort(uint(udpPort3)))
require.NoError(t, err)
d3.SetHost(host3)
defer d1.Stop()
defer d2.Stop()
defer d3.Stop()
err = d1.Start(context.Background())
require.NoError(t, err)
err = d2.Start(context.Background())
require.NoError(t, err)
// Set boot nodes for node2 after the DiscoveryV5 was created
err = d2.SetBootnodes([]*enode.Node{d1.localnode.Node()})
require.NoError(t, err)
err = d3.Start(context.Background())
require.NoError(t, err)
// Set boot nodes for node3 after the DiscoveryV5 was created
err = d3.SetBootnodes([]*enode.Node{d2.localnode.Node()})
require.NoError(t, err)
// Desired node capabilities
filterBitfield := wenr.NewWakuEnrBitfield(false, false, true, false)
iterator3, err := d3.PeerIterator(FilterCapabilities(filterBitfield))
require.NoError(t, err)
require.NotNil(t, iterator3)
time.Sleep(2 * time.Second)
// Check node were discovered by automatic discovery
require.True(t, peerconn3.HasPeer(host1.ID()) && peerconn3.HasPeer(host2.ID()))
peers, err := discoverFilterOnDemand(iterator3, 1)
require.NoError(t, err)
require.Equal(t, 1, len(peers))
// Host1 has store support while host2 hasn't
require.Equal(t, host1.ID().String(), peers[0].AddrInfo.ID.String())
d3.Stop()
peerconn3.Clear()
}
func TestDiscV5WithShardFilter(t *testing.T) {
// Following topic syntax for shard /waku/2/rs/<cluster_id>/<shard_number>
pubSubTopic := "/waku/2/rs/10/1"
// H1
host1, _, prvKey1 := tests.CreateHost(t)
udpPort1, err := tests.FindFreeUDPPort(t, "127.0.0.1", 3)
require.NoError(t, err)
ip1, _ := tests.ExtractIP(host1.Addrs()[0])
l1, err := tests.NewLocalnode(prvKey1, ip1, udpPort1, wenr.NewWakuEnrBitfield(true, true, true, true), nil, utils.Logger())
require.NoError(t, err)
peerconn1 := NewTestPeerDiscoverer()
d1, err := NewDiscoveryV5(prvKey1, l1, peerconn1, prometheus.DefaultRegisterer, utils.Logger(), WithUDPPort(uint(udpPort1)))
require.NoError(t, err)
d1.SetHost(host1)
// Derive shard from the topic
rs1, err := wakuproto.TopicsToRelayShards(pubSubTopic)
require.NoError(t, err)
// Update node with shard info
err = wenr.Update(utils.Logger(), l1, wenr.WithWakuRelaySharding(rs1[0]))
require.NoError(t, err)
// H2
host2, _, prvKey2 := tests.CreateHost(t)
ip2, _ := tests.ExtractIP(host2.Addrs()[0])
udpPort2, err := tests.FindFreeUDPPort(t, "127.0.0.1", 3)
require.NoError(t, err)
l2, err := tests.NewLocalnode(prvKey2, ip2, udpPort2, wenr.NewWakuEnrBitfield(true, true, false, true), nil, utils.Logger())
require.NoError(t, err)
peerconn2 := NewTestPeerDiscoverer()
d2, err := NewDiscoveryV5(prvKey2, l2, peerconn2, prometheus.DefaultRegisterer, utils.Logger(), WithUDPPort(uint(udpPort2)), WithBootnodes([]*enode.Node{d1.localnode.Node()}))
require.NoError(t, err)
d2.SetHost(host2)
// Update second node with shard info used for first node as well
err = wenr.Update(utils.Logger(), l2, wenr.WithWakuRelaySharding(rs1[0]))
require.NoError(t, err)
// H3
host3, _, prvKey3 := tests.CreateHost(t)
ip3, _ := tests.ExtractIP(host3.Addrs()[0])
udpPort3, err := tests.FindFreeUDPPort(t, "127.0.0.1", 3)
require.NoError(t, err)
l3, err := tests.NewLocalnode(prvKey3, ip3, udpPort3, wenr.NewWakuEnrBitfield(true, true, false, true), nil, utils.Logger())
require.NoError(t, err)
peerconn3 := NewTestPeerDiscoverer()
d3, err := NewDiscoveryV5(prvKey3, l3, peerconn3, prometheus.DefaultRegisterer, utils.Logger(), WithUDPPort(uint(udpPort3)), WithBootnodes([]*enode.Node{d2.localnode.Node()}))
require.NoError(t, err)
d3.SetHost(host3)
defer d1.Stop()
defer d2.Stop()
defer d3.Stop()
err = d1.Start(context.Background())
require.NoError(t, err)
err = d2.Start(context.Background())
require.NoError(t, err)
err = d3.Start(context.Background())
require.NoError(t, err)
// Create iterator with desired shard info
iterator3, err := d3.PeerIterator(FilterShard(rs1[0].ClusterID, rs1[0].ShardIDs[0]))
require.NoError(t, err)
require.NotNil(t, iterator3)
time.Sleep(2 * time.Second)
// Check node were discovered by automatic discovery
require.True(t, peerconn3.HasPeer(host1.ID()) && peerconn3.HasPeer(host2.ID()))
// Request two nodes
peers, err := discoverFilterOnDemand(iterator3, 2)
require.NoError(t, err)
require.Equal(t, 2, len(peers))
// Create map for checking peer.ID and enode.ID
allPeers := make(map[string]string)
allPeers[host1.ID().String()] = d1.Node().ID().String()
allPeers[host2.ID().String()] = d2.Node().ID().String()
allPeers[host3.ID().String()] = d3.Node().ID().String()
// Check nodes1 and nodes2 were discovered and node3 wasn't
for _, peer := range peers {
delete(allPeers, peer.AddrInfo.ID.String())
}
require.Equal(t, 1, len(allPeers))
enodeID3, host3Remains := allPeers[host3.ID().String()]
require.True(t, host3Remains)
require.Equal(t, d3.Node().ID().String(), enodeID3)
d3.Stop()
peerconn3.Clear()
}
func TestRecordErrorIteratorFailure(t *testing.T) {
m := newMetrics(prometheus.DefaultRegisterer)
// Increment error counter for rateLimitFailure 7 times
for i := 0; i < 2; i++ {
m.RecordError(iteratorFailure)
}
// Retrieve metric values
counter, _ := discV5Errors.GetMetricWithLabelValues(string(iteratorFailure))
failures := &dto.Metric{}
// Store values into metric client struct
err := counter.Write(failures)
require.NoError(t, err)
// Check the count is in
require.Equal(t, 2, int(failures.GetCounter().GetValue()))
}
func TestDiscV5WithCustomPredicate(t *testing.T) {
// H1
host1, _, prvKey1 := tests.CreateHost(t)
udpPort1, err := tests.FindFreeUDPPort(t, "127.0.0.1", 3)
require.NoError(t, err)
ip1, _ := tests.ExtractIP(host1.Addrs()[0])
l1, err := tests.NewLocalnode(prvKey1, ip1, udpPort1, wenr.NewWakuEnrBitfield(true, true, true, true), nil, utils.Logger())
require.NoError(t, err)
peerconn1 := NewTestPeerDiscoverer()
d1, err := NewDiscoveryV5(prvKey1, l1, peerconn1, prometheus.DefaultRegisterer, utils.Logger(), WithUDPPort(uint(udpPort1)))
require.NoError(t, err)
d1.SetHost(host1)
// H2
host2, _, prvKey2 := tests.CreateHost(t)
ip2, _ := tests.ExtractIP(host2.Addrs()[0])
udpPort2, err := tests.FindFreeUDPPort(t, "127.0.0.1", 3)
require.NoError(t, err)
l2, err := tests.NewLocalnode(prvKey2, ip2, udpPort2, wenr.NewWakuEnrBitfield(true, true, true, true), nil, utils.Logger())
require.NoError(t, err)
peerconn2 := NewTestPeerDiscoverer()
d2, err := NewDiscoveryV5(prvKey2, l2, peerconn2, prometheus.DefaultRegisterer, utils.Logger(), WithUDPPort(uint(udpPort2)), WithBootnodes([]*enode.Node{d1.localnode.Node()}))
require.NoError(t, err)
d2.SetHost(host2)
// H3
blockAllPredicate := func(node *enode.Node) bool {
return false
}
host3, _, prvKey3 := tests.CreateHost(t)
ip3, _ := tests.ExtractIP(host3.Addrs()[0])
udpPort3, err := tests.FindFreeUDPPort(t, "127.0.0.1", 3)
require.NoError(t, err)
l3, err := tests.NewLocalnode(prvKey3, ip3, udpPort3, wenr.NewWakuEnrBitfield(true, true, true, true), nil, utils.Logger())
require.NoError(t, err)
peerconn3 := NewTestPeerDiscoverer()
d3, err := NewDiscoveryV5(prvKey3, l3, peerconn3, prometheus.DefaultRegisterer, utils.Logger(),
WithPredicate(blockAllPredicate), WithUDPPort(uint(udpPort3)),
WithBootnodes([]*enode.Node{d2.localnode.Node()}))
require.NoError(t, err)
d3.SetHost(host3)
defer d1.Stop()
defer d2.Stop()
defer d3.Stop()
err = d1.Start(context.Background())
require.NoError(t, err)
err = d2.Start(context.Background())
require.NoError(t, err)
err = d3.Start(context.Background())
require.NoError(t, err)
time.Sleep(2 * time.Second)
// Check none nodes were discovered by node3 as it is prevented by blockAllPredicate
require.False(t, peerconn3.HasPeer(host1.ID()) || peerconn3.HasPeer(host2.ID()))
// Check node2 could still discover node1 - predicate works at node scope only
require.True(t, peerconn2.HasPeer(host1.ID()))
d3.Stop()
peerconn3.Clear()
}