The node agent waits for a backup's end on the holder's event, not by polling; the manifest consumes it (R6-A A5)

cmd/mesh-host/nodeagent_integration_test.go

@@ -230,32 +230,19 @@ func TestNatsAWantAndItsCompositionAreAppliedWithinASecond(t *testing.T) {
 // module (nothing applied, the have says held with the backup's words); when its want then says skip, it is applied.
 func TestNatsADataModuleAsksItsBackupFirstAndIsHeldWhenItFails(t *testing.T) {
 	b := newItBed(t)
-	backupPollEvery = 20 * time.Millisecond
 	var mu sync.Mutex
 	var asked []string
 	var onDiskWhenAsked string
-	var nightOK bool
-	var at time.Time
 	if _, err := b.conn.Subscribe("mesh.seat.node-backup.tool.now."+itNode, func(m *nats.Msg) {
 		mu.Lock()
 		asked = append(asked, "now")
 		onDiskWhenAsked = b.file("db")
-		at = time.Now()
 		mu.Unlock()
 		_ = m.Respond([]byte(`{"result":{"started":"db"}}`))
-	}); err != nil {
-		t.Fatal(err)
-	}
-	if _, err := b.conn.Subscribe("mesh.seat.node-backup.tool.backed-up."+itNode, func(m *nats.Msg) {
-		mu.Lock()
-		defer mu.Unlock()
-		if at.IsZero() {
-			_ = m.Respond([]byte(`{"result":[]}`))
-			return
-		}
-		night, _ := json.Marshal(map[string]any{"module": "db", "lastNight": map[string]any{"ok": nightOK,
-			"at": time.Now().UTC(), "error": "restic: the repository is locked"}})
-		_ = m.Respond([]byte(`{"result":[` + string(night) + `]}`))
+		// The holder says the backup ended on its event.
+		ev, _ := json.Marshal(map[string]any{"node": itNode, "module": "db", "ok": false, "at": time.Now().UTC(),
+			"error": "restic: the repository is locked"})
+		_ = b.conn.Publish(backedUpEvent, ev)
 	}); err != nil {
 		t.Fatal(err)
 	}