chore: update relay REST and RPC API's and fix unit tests

Makefile

@@ -77,10 +77,10 @@ lint-full:
 	@golangci-lint run ./... --config=./.golangci.full.yaml --deadline=5m
 
 test-with-race:
-	${GOBIN} test -race -timeout 300s ./waku/... 
+	${GOBIN} test -race -timeout 300s ./waku/... ./cmd/waku/server/...
 
 test:
-	${GOBIN} test -timeout 300s ./waku/... -coverprofile=${GO_TEST_OUTFILE}.tmp -coverpkg ./...
+	${GOBIN} test -timeout 300s ./waku/... ./cmd/waku/server/... -coverprofile=${GO_TEST_OUTFILE}.tmp -coverpkg ./...
 	cat ${GO_TEST_OUTFILE}.tmp | grep -v ".pb.go" > ${GO_TEST_OUTFILE}
 	${GOBIN} tool cover -html=${GO_TEST_OUTFILE} -o ${GO_HTML_COV}
 

cmd/waku/node.go

@@ -444,7 +444,14 @@ func Execute(options NodeOptions) error {
 	var restServer *rest.WakuRest
 	if options.RESTServer.Enable {
 		wg.Add(1)
-		restServer = rest.NewWakuRest(wakuNode, options.RESTServer.Address, options.RESTServer.Port, options.PProf, options.RESTServer.Admin, options.RESTServer.RelayCacheCapacity, options.RESTServer.FilterCacheCapacity, logger)
+		restConfig := rest.RestConfig{Address: options.RESTServer.Address,
+			Port:                uint(options.RESTServer.Port),
+			EnablePProf:         options.PProf,
+			EnableAdmin:         options.RESTServer.Admin,
+			RelayCacheCapacity:  uint(options.RESTServer.RelayCacheCapacity),
+			FilterCacheCapacity: uint(options.RESTServer.FilterCacheCapacity)}
+
+		restServer = rest.NewWakuRest(wakuNode, restConfig, logger)
 		restServer.Start(ctx, &wg)
 	}
 

cmd/waku/server/rest/filter.go

@@ -240,11 +240,13 @@ func (s *FilterService) unsubscribeGetMessage(result *filter.WakuFilterPushResul
 	var peerIds string
 	ind := 0
 	for _, entry := range result.Errors() {
-		s.log.Error("can't unsubscribe for ", zap.String("peer", entry.PeerID.String()), zap.Error(entry.Err))
-		if ind != 0 {
-			peerIds += ", "
+		if entry.Err != nil {
+			s.log.Error("can't unsubscribe for ", zap.String("peer", entry.PeerID.String()), zap.Error(entry.Err))
+			if ind != 0 {
+				peerIds += ", "
+			}
+			peerIds += entry.PeerID.String()
 		}
-		peerIds += entry.PeerID.String()
 		ind++
 	}
 	if peerIds != "" {

cmd/waku/server/rest/filter_test.go

@@ -365,7 +365,7 @@ func TestFilterGetMessages(t *testing.T) {
 		router.ServeHTTP(rr, req)
 		require.Equal(t, http.StatusNotFound, rr.Code)
 		require.Equal(t,
-			fmt.Sprintf("Not subscribed to pubsubTopic:%s contentTopic: %s", notSubscibredPubsubTopic, contentTopic),
+			fmt.Sprintf("not subscribed to pubsubTopic:%s contentTopic: %s", notSubscibredPubsubTopic, contentTopic),
 			rr.Body.String(),
 		)
 	}

cmd/waku/server/rest/lightpush_rest.go

@@ -71,6 +71,6 @@ func (serv *LightpushService) postMessagev1(w http.ResponseWriter, req *http.Req
 		_, err = w.Write([]byte(err.Error()))
 		serv.log.Error("writing response", zap.Error(err))
 	} else {
-		w.WriteHeader(http.StatusOK)
+		writeErrOrResponse(w, err, true)
 	}
 }

cmd/waku/server/rest/relay.go

@@ -1,13 +1,9 @@
 package rest
 
 import (
-	"context"
 	"encoding/json"
-	"errors"
 	"net/http"
-	"net/url"
 	"strings"
-	"sync"
 
 	"github.com/go-chi/chi/v5"
 	"github.com/waku-org/go-waku/cmd/waku/server"
@@ -26,29 +22,21 @@ const routeRelayV1AutoMessages = "/relay/v1/auto/messages"
 
 // RelayService represents the REST service for WakuRelay
 type RelayService struct {
-	node   *node.WakuNode
-	cancel context.CancelFunc
+	node *node.WakuNode
 
 	log *zap.Logger
 
-	messages      map[string][]*pb.WakuMessage
-	cacheCapacity int
-	messagesMutex sync.RWMutex
-
-	runner *runnerService
+	cacheCapacity uint
 }
 
 // NewRelayService returns an instance of RelayService
-func NewRelayService(node *node.WakuNode, m *chi.Mux, cacheCapacity int, log *zap.Logger) *RelayService {
+func NewRelayService(node *node.WakuNode, m *chi.Mux, cacheCapacity uint, log *zap.Logger) *RelayService {
 	s := &RelayService{
 		node:          node,
 		log:           log.Named("relay"),
 		cacheCapacity: cacheCapacity,
-		messages:      make(map[string][]*pb.WakuMessage),
 	}
 
-	s.runner = newRunnerService(node.Broadcaster(), s.addEnvelope)
-
 	m.Post(routeRelayV1Subscriptions, s.postV1Subscriptions)
 	m.Delete(routeRelayV1Subscriptions, s.deleteV1Subscriptions)
 	m.Get(routeRelayV1Messages, s.getV1Messages)
@@ -65,46 +53,6 @@ func NewRelayService(node *node.WakuNode, m *chi.Mux, cacheCapacity int, log *za
 	return s
 }
 
-func (r *RelayService) addEnvelope(envelope *protocol.Envelope) {
-	r.messagesMutex.Lock()
-	defer r.messagesMutex.Unlock()
-
-	if _, ok := r.messages[envelope.PubsubTopic()]; !ok {
-		return
-	}
-
-	// Keep a specific max number of messages per topic
-	if len(r.messages[envelope.PubsubTopic()]) >= r.cacheCapacity {
-		r.messages[envelope.PubsubTopic()] = r.messages[envelope.PubsubTopic()][1:]
-	}
-
-	r.messages[envelope.PubsubTopic()] = append(r.messages[envelope.PubsubTopic()], envelope.Message())
-}
-
-// Start starts the RelayService
-func (r *RelayService) Start(ctx context.Context) {
-	ctx, cancel := context.WithCancel(ctx)
-	r.cancel = cancel
-
-	r.messagesMutex.Lock()
-	// Node may already be subscribed to some topics when Relay API handlers are installed. Let's add these
-	for _, topic := range r.node.Relay().Topics() {
-		r.log.Info("adding topic handler for existing subscription", zap.String("topic", topic))
-		r.messages[topic] = []*pb.WakuMessage{}
-	}
-	r.messagesMutex.Unlock()
-
-	r.runner.Start(ctx)
-}
-
-// Stop stops the RelayService
-func (r *RelayService) Stop() {
-	if r.cancel == nil {
-		return
-	}
-	r.cancel()
-}
-
 func (r *RelayService) deleteV1Subscriptions(w http.ResponseWriter, req *http.Request) {
 	var topics []string
 	decoder := json.NewDecoder(req.Body)
@@ -114,16 +62,11 @@ func (r *RelayService) deleteV1Subscriptions(w http.ResponseWriter, req *http.Re
 	}
 	defer req.Body.Close()
 
-	r.messagesMutex.Lock()
-	defer r.messagesMutex.Unlock()
-
 	var err error
 	for _, topic := range topics {
 		err = r.node.Relay().Unsubscribe(req.Context(), protocol.NewContentFilter(topic))
 		if err != nil {
 			r.log.Error("unsubscribing from topic", zap.String("topic", strings.Replace(strings.Replace(topic, "\n", "", -1), "\r", "", -1)), zap.Error(err))
-		} else {
-			delete(r.messages, topic)
 		}
 	}
 
@@ -140,26 +83,29 @@ func (r *RelayService) postV1Subscriptions(w http.ResponseWriter, req *http.Requ
 	defer req.Body.Close()
 
 	var err error
-	var sub *relay.Subscription
-	var subs []*relay.Subscription
+	var successCnt int
 	var topicToSubscribe string
 	for _, topic := range topics {
 		if topic == "" {
-			subs, err = r.node.Relay().Subscribe(req.Context(), protocol.NewContentFilter(relay.DefaultWakuTopic))
 			topicToSubscribe = relay.DefaultWakuTopic
 		} else {
-			subs, err = r.node.Relay().Subscribe(req.Context(), protocol.NewContentFilter(topic))
 			topicToSubscribe = topic
 		}
+		_, err = r.node.Relay().Subscribe(req.Context(), protocol.NewContentFilter(topicToSubscribe), relay.WithCacheSize(r.cacheCapacity))
+
 		if err != nil {
 			r.log.Error("subscribing to topic", zap.String("topic", strings.Replace(topicToSubscribe, "\n", "", -1)), zap.Error(err))
-		} else {
-			sub = subs[0]
-			sub.Unsubscribe()
-			r.messagesMutex.Lock()
-			r.messages[topic] = []*pb.WakuMessage{}
-			r.messagesMutex.Unlock()
+			continue
 		}
+		successCnt++
+	}
+
+	// on partial subscribe failure
+	if successCnt > 0 && err != nil {
+		r.log.Error("partial subscribe failed", zap.Error(err))
+		// on partial failure
+		writeResponse(w, err, http.StatusOK)
+		return
 	}
 
 	writeErrOrResponse(w, err, true)
@@ -170,20 +116,22 @@ func (r *RelayService) getV1Messages(w http.ResponseWriter, req *http.Request) {
 	if topic == "" {
 		return
 	}
-
-	r.messagesMutex.Lock()
-	defer r.messagesMutex.Unlock()
-
-	if _, ok := r.messages[topic]; !ok {
+	//TODO: Update the API to also take a contentTopic since relay now supports filtering based on contentTopic as well.
+	sub, err := r.node.Relay().GetSubscriptionWithPubsubTopic(topic, "")
+	if err != nil {
 		w.WriteHeader(http.StatusNotFound)
-		_, err := w.Write([]byte("not subscribed to topic"))
+		_, err = w.Write([]byte("not subscribed to topic"))
 		r.log.Error("writing response", zap.Error(err))
 		return
 	}
+	var response []*pb.WakuMessage
+	select {
+	case msg := <-sub.Ch:
+		response = append(response, msg.Message())
+	default:
+		break
+	}
 
-	response := r.messages[topic]
-
-	r.messages[topic] = []*pb.WakuMessage{}
 	writeErrOrResponse(w, nil, response)
 }
 
@@ -205,11 +153,6 @@ func (r *RelayService) postV1Message(w http.ResponseWriter, req *http.Request) {
 		topic = relay.DefaultWakuTopic
 	}
 
-	if !r.node.Relay().IsSubscribed(topic) {
-		writeErrOrResponse(w, errors.New("not subscribed to pubsubTopic"), nil)
-		return
-	}
-
 	if err := server.AppendRLNProof(r.node, message); err != nil {
 		writeErrOrResponse(w, err, nil)
 		return
@@ -250,7 +193,7 @@ func (r *RelayService) postV1AutoSubscriptions(w http.ResponseWriter, req *http.
 	defer req.Body.Close()
 
 	var err error
-	_, err = r.node.Relay().Subscribe(r.node.Relay().Context(), protocol.NewContentFilter("", cTopics...))
+	_, err = r.node.Relay().Subscribe(r.node.Relay().Context(), protocol.NewContentFilter("", cTopics...), relay.WithCacheSize(r.cacheCapacity))
 	if err != nil {
 		r.log.Error("subscribing to topics", zap.Strings("contentTopics", cTopics), zap.Error(err))
 	}
@@ -260,27 +203,14 @@ func (r *RelayService) postV1AutoSubscriptions(w http.ResponseWriter, req *http.
 		_, err := w.Write([]byte(err.Error()))
 		r.log.Error("writing response", zap.Error(err))
 	} else {
-		w.WriteHeader(http.StatusOK)
+		writeErrOrResponse(w, err, true)
 	}
 
 }
 
 func (r *RelayService) getV1AutoMessages(w http.ResponseWriter, req *http.Request) {
-	cTopic := chi.URLParam(req, "contentTopic")
-	if cTopic == "" {
-		w.WriteHeader(http.StatusBadRequest)
-		_, err := w.Write([]byte("contentTopic is required"))
-		r.log.Error("writing response", zap.Error(err))
-		return
-	}
-	cTopic, err := url.QueryUnescape(cTopic)
-	if err != nil {
-		w.WriteHeader(http.StatusBadRequest)
-		_, err = w.Write([]byte("invalid contentTopic format"))
-		r.log.Error("writing response", zap.Error(err))
-		return
-	}
 
+	cTopic := topicFromPath(w, req, "contentTopic", r.log)
 	sub, err := r.node.Relay().GetSubscription(cTopic)
 	if err != nil {
 		w.WriteHeader(http.StatusNotFound)