Ref T28, background updater: consolidate DB and model data in background

* automatically reload DB data
* consolidate models with DB data

src/blackcore/db/backgrounddataupdater.h

@@ -0,0 +1,84 @@
+/* Copyright (C) 2017
+ * swift project Community / Contributors
+ *
+ * This file is part of swift project. It is subject to the license terms in the LICENSE file found in the top-level
+ * directory of this distribution and at http://www.swift-project.org/license.html. No part of swift project,
+ * including this file, may be copied, modified, propagated, or distributed except according to the terms
+ * contained in the LICENSE file.
+ */
+
+//! \file
+
+#ifndef BLACKCORE_DB_BACKGROUNDDATAUPDATER_H
+#define BLACKCORE_DB_BACKGROUNDDATAUPDATER_H
+
+#include "blackcore/data/dbcaches.h"
+#include "blackcore/blackcoreexport.h"
+#include "blackmisc/simulation/data/modelcaches.h"
+#include "blackmisc/network/entityflags.h"
+#include "blackmisc/worker.h"
+#include <QMap>
+
+namespace BlackCore
+{
+    namespace Db
+    {
+        /**
+         * Update and consolidation of DB data
+         */
+        class BLACKCORE_EXPORT CBackgroundDataUpdater : public BlackMisc::CContinuousWorker
+        {
+        public:
+            //! Log categories
+            static const BlackMisc::CLogCategoryList &getLogCategories();
+
+            //! Constructor
+            CBackgroundDataUpdater(QObject *owner);
+
+            //! Destructor
+            virtual ~CBackgroundDataUpdater();
+
+            //! Is shutting down?
+            //! \threadsafe
+            bool isShuttingDown() const;
+
+            //! Enabled (running)?
+            //! \threadsafe
+            bool isEnabled() const;
+
+            //! Graceful shutdown
+            //! \threadsafe
+            void gracefulShutdown();
+
+            //! Enable updates
+            void startUpdating(int updateTimeSecs);
+
+        private:
+            std::atomic<bool> m_shutdown { false };  //!< marker it is shutting down
+            std::atomic<bool> m_enabled { false };   //!< marker it is enabled
+            int               m_cycle = 0;           //!< cycle
+            bool              m_inWork = false;      //!< indicates a running update
+            QTimer            m_updateTimer { this };
+
+            BlackMisc::Simulation::Data::CModelCaches    m_modelCaches { false, this };    //!< caches
+            BlackMisc::Simulation::Data::CModelSetCaches m_modelSetCaches { false, this }; //!< caches
+            QMap<QString, QDateTime> m_dbModelsLatestChange;
+
+            //! Do the udpate checks
+            void doWork();
+
+            //! Read of new DB data
+            void triggerInfoReads();
+
+            //! Sync the model cache
+            void syncModelOrModelSetCacheWithDbData(BlackMisc::Simulation::Data::IMultiSimulatorModelCaches &cache);
+
+            //! Sync DB entity
+            void syncDbEntity(BlackMisc::Network::CEntityFlags::Entity entity) const;
+
+            //! Still enabled etc.
+            bool entryCheck() const;
+        };
+    } // ns
+} // ns
+#endif // guard