knotserver: remove wantedDids filter for now

cmd/knotserver/main.go

···
 	jc, err := jetstream.NewJetstreamClient(c.Server.JetstreamEndpoint, "knotserver", []string{
 		tangled.PublicKeyNSID,
 		tangled.KnotMemberNSID,
-	}, nil, l, db, true)
+	}, nil, l, db, false)
 	if err != nil {
 		l.Error("failed to setup jetstream", "error", err)
 	}

jetstream/jetstream.go

···
 	UpdateLastTimeUs(int64) error
 }
 
-type JetstreamSubscriber struct {
-	client  *client.Client
-	cancel  context.CancelFunc
-	dids    []string
-	ident   string
-	running bool
-}
-
 type JetstreamClient struct {
-	cfg                  *client.ClientConfig
-	baseIdent            string
-	l                    *slog.Logger
-	db                   DB
-	waitForDid           bool
-	maxDidsPerSubscriber int
+	cfg    *client.ClientConfig
+	client *client.Client
+	ident  string
+	l      *slog.Logger
 
-	mu           sync.RWMutex
-	subscribers  []*JetstreamSubscriber
-	processFunc  func(context.Context, *models.Event) error
-	subscriberWg sync.WaitGroup
+	db         DB
+	waitForDid bool
+	mu         sync.RWMutex
+
+	cancel   context.CancelFunc
+	cancelMu sync.Mutex
 }
 
 func (j *JetstreamClient) AddDid(did string) {
···
 		return
 	}
 	j.mu.Lock()
-	defer j.mu.Unlock()
-
-	// Just add to the config for now, actual subscriber management happens in UpdateDids
 	j.cfg.WantedDids = append(j.cfg.WantedDids, did)
+	j.mu.Unlock()
 }
 
 func (j *JetstreamClient) UpdateDids(dids []string) {
···
 			j.cfg.WantedDids = append(j.cfg.WantedDids, did)
 		}
 	}
-
-	needRebalance := j.processFunc != nil
 	j.mu.Unlock()
 
-	if needRebalance {
-		j.rebalanceSubscribers()
+	j.cancelMu.Lock()
+	if j.cancel != nil {
+		j.cancel()
 	}
+	j.cancelMu.Unlock()
 }
 
 func NewJetstreamClient(endpoint, ident string, collections []string, cfg *client.ClientConfig, logger *slog.Logger, db DB, waitForDid bool) (*JetstreamClient, error) {
···
 	}
 
 	return &JetstreamClient{
-		cfg:                  cfg,
-		baseIdent:            ident,
-		db:                   db,
-		l:                    logger,
-		waitForDid:           waitForDid,
-		subscribers:          make([]*JetstreamSubscriber, 0),
-		maxDidsPerSubscriber: 100,
+		cfg:   cfg,
+		ident: ident,
+		db:    db,
+		l:     logger,
+
+		// This will make the goroutine in StartJetstream wait until
+		// cfg.WantedDids has been populated, typically using UpdateDids.
+		waitForDid: waitForDid,
 	}, nil
 }
 
 // StartJetstream starts the jetstream client and processes events using the provided processFunc.
 // The caller is responsible for saving the last time_us to the database (just use your db.SaveLastTimeUs).
 func (j *JetstreamClient) StartJetstream(ctx context.Context, processFunc func(context.Context, *models.Event) error) error {
-	j.mu.Lock()
-	j.processFunc = processFunc
-	j.mu.Unlock()
+	logger := j.l
 
-	if j.waitForDid {
-		// Start a goroutine to wait for DIDs and then start subscribers
-		go func() {
-			for {
-				j.mu.RLock()
-				hasDids := len(j.cfg.WantedDids) > 0
-				j.mu.RUnlock()
+	sched := sequential.NewScheduler(j.ident, logger, processFunc)
 
-				if hasDids {
-					j.l.Info("done waiting for did, starting subscribers")
-					j.rebalanceSubscribers()
-					return
-				}
+	client, err := client.NewClient(j.cfg, log.New("jetstream"), sched)
+	if err != nil {
+		return fmt.Errorf("failed to create jetstream client: %w", err)
+	}
+	j.client = client
+
+	go func() {
+		if j.waitForDid {
+			for len(j.cfg.WantedDids) == 0 {
 				time.Sleep(time.Second)
 			}
-		}()
-	} else {
-		// Start subscribers immediately
-		j.rebalanceSubscribers()
-	}
+		}
+		logger.Info("done waiting for did")
+		j.connectAndRead(ctx)
+	}()
 
 	return nil
 }
 
-// rebalanceSubscribers creates, updates, or removes subscribers based on the current list of DIDs
-func (j *JetstreamClient) rebalanceSubscribers() {
-	j.mu.Lock()
-	defer j.mu.Unlock()
-
-	if j.processFunc == nil {
-		j.l.Warn("cannot rebalance subscribers without a process function")
-		return
-	}
-
-	// calculate how many subscribers we need
-	totalDids := len(j.cfg.WantedDids)
-	subscribersNeeded := (totalDids + j.maxDidsPerSubscriber - 1) / j.maxDidsPerSubscriber // ceiling division
-
-	// first case: no subscribers yet; create all needed subscribers
-	if len(j.subscribers) == 0 {
-		for i := range subscribersNeeded {
-			startIdx := i * j.maxDidsPerSubscriber
-			endIdx := min((i+1)*j.maxDidsPerSubscriber, totalDids)
-
-			subscriberDids := j.cfg.WantedDids[startIdx:endIdx]
-
-			subCfg := *j.cfg
-			subCfg.WantedDids = subscriberDids
-
-			ident := fmt.Sprintf("%s-%d", j.baseIdent, i)
-			subscriber := &JetstreamSubscriber{
-				dids:  subscriberDids,
-				ident: ident,
-			}
-			j.subscribers = append(j.subscribers, subscriber)
-
-			j.subscriberWg.Add(1)
-			go j.startSubscriber(subscriber, &subCfg)
-		}
-		return
-	}
-
-	// second case: we have more subscribers than needed, stop extra subscribers
-	if len(j.subscribers) > subscribersNeeded {
-		for i := subscribersNeeded; i < len(j.subscribers); i++ {
-			sub := j.subscribers[i]
-			if sub.running && sub.cancel != nil {
-				sub.cancel()
-				sub.running = false
-			}
-		}
-		j.subscribers = j.subscribers[:subscribersNeeded]
-	}
-
-	// third case: we need more subscribers
-	if len(j.subscribers) < subscribersNeeded {
-		existingCount := len(j.subscribers)
-		// Create additional subscribers
-		for i := existingCount; i < subscribersNeeded; i++ {
-			startIdx := i * j.maxDidsPerSubscriber
-			endIdx := min((i+1)*j.maxDidsPerSubscriber, totalDids)
-
-			subscriberDids := j.cfg.WantedDids[startIdx:endIdx]
-
-			subCfg := *j.cfg
-			subCfg.WantedDids = subscriberDids
-
-			ident := fmt.Sprintf("%s-%d", j.baseIdent, i)
-			subscriber := &JetstreamSubscriber{
-				dids:  subscriberDids,
-				ident: ident,
-			}
-			j.subscribers = append(j.subscribers, subscriber)
-
-			j.subscriberWg.Add(1)
-			go j.startSubscriber(subscriber, &subCfg)
-		}
-	}
-
-	// fourth case: update existing subscribers with new wantedDids
-	for i := 0; i < subscribersNeeded && i < len(j.subscribers); i++ {
-		startIdx := i * j.maxDidsPerSubscriber
-		endIdx := min((i+1)*j.maxDidsPerSubscriber, totalDids)
-		newDids := j.cfg.WantedDids[startIdx:endIdx]
-
-		// if the dids for this subscriber have changed, restart it
-		sub := j.subscribers[i]
-		if !didSlicesEqual(sub.dids, newDids) {
-			j.l.Info("subscriber DIDs changed, updating",
-				"subscriber", sub.ident,
-				"old_count", len(sub.dids),
-				"new_count", len(newDids))
-
-			if sub.running && sub.cancel != nil {
-				sub.cancel()
-				sub.running = false
-			}
-
-			subCfg := *j.cfg
-			subCfg.WantedDids = newDids
-
-			sub.dids = newDids
-
-			j.subscriberWg.Add(1)
-			go j.startSubscriber(sub, &subCfg)
-		}
-	}
-}
-
-func didSlicesEqual(a, b []string) bool {
-	if len(a) != len(b) {
-		return false
-	}
-
-	aMap := make(map[string]struct{}, len(a))
-	for _, did := range a {
-		aMap[did] = struct{}{}
-	}
-
-	for _, did := range b {
-		if _, exists := aMap[did]; !exists {
-			return false
-		}
-	}
-
-	return true
-}
-
-// startSubscriber initializes and starts a single subscriber
-func (j *JetstreamClient) startSubscriber(sub *JetstreamSubscriber, cfg *client.ClientConfig) {
-	defer j.subscriberWg.Done()
-
-	logger := j.l.With("subscriber", sub.ident)
-	logger.Info("starting subscriber", "dids_count", len(sub.dids))
-
-	sched := sequential.NewScheduler(sub.ident, logger, j.processFunc)
-
-	client, err := client.NewClient(cfg, log.New("jetstream-"+sub.ident), sched)
-	if err != nil {
-		logger.Error("failed to create jetstream client", "error", err)
-		return
-	}
-
-	sub.client = client
-
-	j.mu.Lock()
-	sub.running = true
-	j.mu.Unlock()
-
-	j.connectAndReadForSubscriber(sub)
-}
-
-func (j *JetstreamClient) connectAndReadForSubscriber(sub *JetstreamSubscriber) {
-	ctx := context.Background()
-	l := j.l.With("subscriber", sub.ident)
-
+func (j *JetstreamClient) connectAndRead(ctx context.Context) {
+	l := log.FromContext(ctx)
 	for {
-		// Check if this subscriber should still be running
-		j.mu.RLock()
-		running := sub.running
-		j.mu.RUnlock()
-
-		if !running {
-			l.Info("subscriber marked for shutdown")
-			return
-		}
-
 		cursor := j.getLastTimeUs(ctx)
 
 		connCtx, cancel := context.WithCancel(ctx)
+		j.cancelMu.Lock()
+		j.cancel = cancel
+		j.cancelMu.Unlock()
 
-		j.mu.Lock()
-		sub.cancel = cancel
-		j.mu.Unlock()
-
-		l.Info("connecting subscriber to jetstream")
-		if err := sub.client.ConnectAndRead(connCtx, cursor); err != nil {
+		if err := j.client.ConnectAndRead(connCtx, cursor); err != nil {
 			l.Error("error reading jetstream", "error", err)
 			cancel()
-			time.Sleep(time.Second) // Small backoff before retry
 			continue
 		}
 
 		select {
 		case <-ctx.Done():
-			l.Info("context done, stopping subscriber")
+			l.Info("context done, stopping jetstream")
 			return
 		case <-connCtx.Done():
 			l.Info("connection context done, reconnecting")
 			continue
 		}
 	}
-}
-
-// GetRunningSubscribersCount returns the total number of currently running subscribers
-func (j *JetstreamClient) GetRunningSubscribersCount() int {
-	j.mu.RLock()
-	defer j.mu.RUnlock()
-
-	runningCount := 0
-	for _, sub := range j.subscribers {
-		if sub.running {
-			runningCount++
-		}
-	}
-
-	return runningCount
-}
-
-// Shutdown gracefully stops all subscribers
-func (j *JetstreamClient) Shutdown() {
-	j.mu.Lock()
-
-	// Cancel all subscribers
-	for _, sub := range j.subscribers {
-		if sub.running && sub.cancel != nil {
-			sub.cancel()
-			sub.running = false
-		}
-	}
-
-	j.mu.Unlock()
-
-	// Wait for all subscribers to complete
-	j.subscriberWg.Wait()
-	j.l.Info("all subscribers shut down", "total_subscribers", len(j.subscribers), "running_subscribers", j.GetRunningSubscribersCount())
 }
 
 func (j *JetstreamClient) getLastTimeUs(ctx context.Context) *int64 {
···
 		}
 	}
 
-	// If last time is older than 2 days, start from now
+	// If last time is older than a week, start from now
 	if time.Now().UnixMicro()-lastTimeUs > 2*24*60*60*1000*1000 {
 		lastTimeUs = time.Now().UnixMicro()
 		l.Warn("last time us is older than 2 days; discarding that and starting from now")
···
 		}
 	}
 
-	l.Info("found last time_us", "time_us", lastTimeUs, "running_subscribers", j.GetRunningSubscribersCount())
+	l.Info("found last time_us", "time_us", lastTimeUs)
 	return &lastTimeUs
 }

knotserver/handler.go

···
 	if len(dids) > 0 {
 		h.knotInitialized = true
 		close(h.init)
-		h.jc.UpdateDids(dids)
+		// h.jc.UpdateDids(dids)
 	}
 
 	r.Get("/", h.Index)

knotserver/jetstream.go

···
 		if err := h.db.UpdateLastTimeUs(lastTimeUs); err != nil {
 			err = fmt.Errorf("(deferred) failed to save last time us: %w", err)
 		}
-		h.jc.UpdateDids([]string{did})
+		// h.jc.UpdateDids([]string{did})
 	}()
 
 	raw := json.RawMessage(event.Commit.Record)

knotserver/routes.go

···
 		return
 	}
 
-	h.jc.UpdateDids([]string{data.Did})
+	// h.jc.UpdateDids([]string{data.Did})
 	if err := h.e.AddOwner(ThisServer, data.Did); err != nil {
 		l.Error("adding owner", "error", err.Error())
 		writeError(w, err.Error(), http.StatusInternalServerError)