Assign positive scores to drand bootstrappers

Signed-off-by: Jakub Sztandera <kubuxu@protocol.ai>

node/modules/core.go

@@ -89,3 +89,7 @@ func ConfigBootstrap(peers []string) func() (dtypes.BootstrapPeers, error) {
 func BuiltinBootstrap() (dtypes.BootstrapPeers, error) {
 	return build.BuiltinBootstrap()
 }
+
+func DrandBootstrap() (dtypes.DrandBootstrap, error) {
+	return build.DrandBootstrap()
+}

node/modules/dtypes/bootstrap.go

@@ -3,5 +3,6 @@ package dtypes
 import "github.com/libp2p/go-libp2p-core/peer"
 
 type BootstrapPeers []peer.AddrInfo
+type DrandBootstrap []peer.AddrInfo
 
 type Bootstrapper bool

node/modules/lp2p/pubsub.go

@@ -41,6 +41,7 @@ type GossipIn struct {
 	Host host.Host
 	Nn   dtypes.NetworkName
 	Bp   dtypes.BootstrapPeers
+	Db   dtypes.DrandBootstrap
 	Cfg  *config.Pubsub
 	Sk   *dtypes.ScoreKeeper
 }
@@ -61,6 +62,11 @@ func GossipSub(in GossipIn) (service *pubsub.PubSub, err error) {
 	for _, pi := range in.Bp {
 		bootstrappers[pi.ID] = struct{}{}
 	}
+	drandBootstrappers := make(map[peer.ID]struct{})
+	for _, pi := range in.Db {
+		drandBootstrappers[pi.ID] = struct{}{}
+	}
+
 	isBootstrapNode := in.Cfg.Bootstrapper
 	drandTopic, err := getDrandTopic()
 	if err != nil {
@@ -83,6 +89,11 @@ func GossipSub(in GossipIn) (service *pubsub.PubSub, err error) {
 						return 2500
 					}
 
+					_, ok = drandBootstrappers[p]
+					if ok && !isBootstrapNode {
+						return 1500
+					}
+
 					// TODO: we want to  plug the application specific score to the node itself in order
 					//       to provide feedback to the pubsub system based on observed behaviour
 					return 0