wire up trigger to restart sync for ACL spider

app/handle-req.go

@@ -68,7 +68,8 @@ func (l *Listener) HandleReq(msg []byte) (
 			err = nil
 		}
 	}
-	// write out the events to the socket
+	// todo: filter out privileged events from the results if the user is not
+	//  authed or authed to a non-privileged pubkey.
 	seen := make(map[string]struct{})
 	for _, ev := range events {
 		// track the IDs we've sent

app/main.go

@@ -34,7 +34,6 @@ func Run(
 		}
 		adminKeys = append(adminKeys, pk)
 	}
-
 	// start listener
 	l := &Server{
 		Ctx:        ctx,

main.go

@@ -30,9 +30,10 @@ func main() {
 		os.Exit(1)
 	}
 	acl.Registry.Active.Store(cfg.ACLMode)
-	if err = acl.Registry.Configure(cfg, db); chk.E(err) {
+	if err = acl.Registry.Configure(cfg, db, ctx); chk.E(err) {
 		os.Exit(1)
 	}
+	acl.Registry.Syncer()
 	quit := app.Run(ctx, cfg, db)
 	sigs := make(chan os.Signal, 1)
 	signal.Notify(sigs, os.Interrupt)

pkg/acl/acl.go

@@ -48,6 +48,15 @@ func (s *S) GetACLInfo() (name, description, documentation string) {
 	return
 }
 
+func (s *S) Syncer() {
+	for _, i := range s.ACL {
+		if i.Type() == s.Active.Load() {
+			i.Syncer()
+			break
+		}
+	}
+}
+
 func (s *S) Type() (typ string) {
 	for _, i := range s.ACL {
 		if i.Type() == s.Active.Load() {

pkg/acl/follows.go

@@ -1,6 +1,7 @@
 package acl
 
 import (
+	"context"
 	"reflect"
 	"sync"
 
@@ -20,11 +21,13 @@ import (
 )
 
 type Follows struct {
+	Ctx context.Context
 	cfg *config.C
 	*database.D
 	followsMx sync.RWMutex
 	admins    [][]byte
 	follows   [][]byte
+	updated   chan struct{}
 }
 
 func (f *Follows) Configure(cfg ...any) (err error) {
@@ -37,6 +40,9 @@ func (f *Follows) Configure(cfg ...any) (err error) {
 		case *database.D:
 			log.D.F("setting ACL database: %s", c.Path())
 			f.D = c
+		case context.Context:
+			log.D.F("setting ACL context: %s", c.Value("id"))
+			f.Ctx = c
 		default:
 			err = errorf.E("invalid type: %T", reflect.TypeOf(ca))
 		}
@@ -92,6 +98,11 @@ func (f *Follows) Configure(cfg ...any) (err error) {
 			}
 		}
 	}
+	if f.updated == nil {
+		f.updated = make(chan struct{})
+	} else {
+		f.updated <- struct{}{}
+	}
 	return
 }
 
@@ -121,6 +132,22 @@ func (f *Follows) GetACLInfo() (name, description, documentation string) {
 
 func (f *Follows) Type() string { return "follows" }
 
+func (f *Follows) Syncer() {
+	log.I.F("starting follows syncer")
+	go func() {
+		for {
+			select {
+			case <-f.Ctx.Done():
+				return
+			case <-f.updated:
+				// close and reopen subscriptions to users on the follow list and
+				// admins
+				log.I.F("reopening subscriptions")
+			}
+		}
+	}()
+}
+
 func init() {
 	log.T.F("registering follows ACL")
 	Registry.Register(new(Follows))

pkg/acl/none.go

@@ -20,6 +20,8 @@ func (n None) Type() string {
 	return "none"
 }
 
+func (n None) Syncer() {}
+
 func init() {
 	log.T.F("registering none ACL")
 	Registry.Register(new(None))

pkg/interfaces/acl/acl.go

@@ -27,5 +27,9 @@ type I interface {
 	// explain briefly how it works, and then a long text of documentation of
 	// the ACL's rules and configuration (in asciidoc or markdown).
 	GetACLInfo() (name, description, documentation string)
+	// Syncer is a worker thread that does things in the background like syncing
+	// with other relays on admin relay lists using subscriptions for all events
+	// that arrive elsewhere relevant to the ACL scheme.
+	Syncer()
 	typer.T
 }