fetch snapshot data on subsrciption

sources/awesome-widget/plugin/awdataengineaggregator.cpp

@@ -63,7 +63,7 @@ void AWDataEngineAggregator::connectSources()
     auto keys = m_sensors.keys();
     auto newKeys = QSet(keys.cbegin(), keys.cend()) - m_subscribed;
 
-    m_interface->subscribe(newKeys.values()).waitForFinished();
+    subscribeSources(newKeys.values());
     m_subscribed.unite(newKeys);
 }
 
@@ -106,6 +106,19 @@ void AWDataEngineAggregator::registerClient(QObject *_client)
 }
 
 
+void AWDataEngineAggregator::subscribeSources(const QStringList &_sources)
+{
+    qCDebug(LOG_AW) << "Subscribe on sources" << _sources;
+
+    // subscribe
+    m_interface->subscribe(_sources).waitForFinished();
+    // get data snapshot
+    auto data = m_interface->sensorData(_sources);
+    data.waitForFinished();
+    updateData(data);
+}
+
+
 void AWDataEngineAggregator::unregisterClient(QObject *_client)
 {
     qCDebug(LOG_AW) << "Unregister client" << _client;
@@ -159,15 +172,16 @@ void AWDataEngineAggregator::sensorAdded(const QString &_sensor)
     if (!isValidSensor(info))
         return;
 
+    // notify about new device
+    emit(deviceAdded(_sensor));
+
+    // process connection
     m_sensors[_sensor] = info;
     dropSource(_sensor); // force reconnect
     if (!m_subscribed.contains(_sensor)) {
-        m_interface->subscribe({_sensor}).waitForFinished();
+        subscribeSources({_sensor});
         m_subscribed.insert(_sensor);
     }
-
-    // notify about new device
-    emit(deviceAdded(_sensor));
 }
 
 

sources/awesome-widget/plugin/awdataengineaggregator.h

@@ -54,6 +54,7 @@ public:
     [[nodiscard]] static bool isValidSensor(const KSysGuard::SensorInfo &_sensor);
     void loadSources();
     void registerClient(QObject *_client);
+    void subscribeSources(const QStringList &_sources);
     void unregisterClient(QObject *_client);
 
 signals: