solved duplicate points error

netatmo_service/collector.py

@@ -20,14 +20,15 @@ class Collector:
 
     def collect_once(self) -> int:
         samples = extract_samples(self.client.stations_data(), self.module_names)
+        updated = 0
         for name, sample in samples.items():
             try:
-                self.store.update(name, sample)
+                updated += bool(self.store.update(name, sample))
             except Exception:
                 # One stale/duplicate module must not discard the other modules.
                 LOG.exception("Could not update %s RRD", name)
-        LOG.info("Collected %d Netatmo modules", len(samples))
-        return len(samples)
+        LOG.info("Collected %d Netatmo modules; updated %d RRDs", len(samples), updated)
+        return updated
 
     def start(self) -> None:
         if self._thread and self._thread.is_alive():
@@ -48,4 +49,3 @@ class Collector:
                 LOG.exception("Netatmo collection failed")
             remaining = max(1, self.interval - (time.monotonic() - started))
             self._stop.wait(remaining)
-