class CWeatherManager

refs #612

src/blackcore/weathermanager.cpp

@@ -0,0 +1,119 @@
+/* Copyright (C) 2016
+ * 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.
+ */
+
+#include "weathermanager.h"
+#include "blackcore/weatherdata.h"
+#include "blackmisc/logmessage.h"
+#include "blackmisc/weather/weatherdataplugininfolist.h"
+
+using namespace BlackMisc;
+using namespace BlackMisc::Geo;
+using namespace BlackMisc::Weather;
+using namespace BlackMisc::PhysicalQuantities;
+
+namespace BlackCore
+{
+
+    CWeatherManager::CWeatherManager(QObject *parent) : QObject(parent)
+    {
+        m_pluginManagerWeatherData.collectPlugins();
+        loadWeatherDataPlugins();
+    }
+
+    void CWeatherManager::setWeatherToClear(bool value)
+    {
+        m_isWeatherClear = value;
+        // todo: send weather grid to drivers from here
+    }
+
+    void CWeatherManager::requestWeatherGrid(const CWeatherGrid &weatherGrid,
+                                             const BlackMisc::CSlot<void(const BlackMisc::Weather::CWeatherGrid &)> &callback)
+    {
+        if (m_isWeatherClear)
+        {
+            callback(CWeatherGrid::getClearWeatherGrid());
+            return;
+        }
+
+        WeatherRequest weatherRequest { weatherGrid, callback };
+        m_pendingRequests.append(weatherRequest);
+
+        // Serialize the requests, since plugins can handle only one at a time
+        if (m_pendingRequests.size() == 1) { fetchNextWeatherData(); }
+    }
+
+    bool CWeatherManager::loadWeatherDataPlugins()
+    {
+        const CWeatherDataPluginInfoList weatherDataPluginInfos = m_pluginManagerWeatherData.getAvailableWeatherDataPlugins();
+        if (weatherDataPluginInfos.isEmpty())
+        {
+            CLogMessage(this).warning("No weather data plugin found!");
+            return false;
+        }
+
+        for (const auto &pluginInfo : weatherDataPluginInfos)
+        {
+            IWeatherDataFactory *factory = m_pluginManagerWeatherData.getPluginById<IWeatherDataFactory>(pluginInfo.getIdentifier());
+            if (!factory)
+            {
+                CLogMessage(this).error("Failed to create IWeatherDataFactory for %1") << pluginInfo.getIdentifier();
+                return false;
+            }
+
+            IWeatherData *weatherData = factory->create(this);
+            if (!weatherData)
+            {
+                CLogMessage(this).error("Failed to create IWeatherData instance for %1") << pluginInfo.getIdentifier();
+                return false;
+            }
+
+            connect(weatherData, &IWeatherData::fetchingFinished, this, &CWeatherManager::handleNextRequest);
+            m_weatherDataPlugins.append(weatherData);
+            delete factory;
+        }
+        return true;
+    }
+
+    void CWeatherManager::fetchNextWeatherData()
+    {
+        const WeatherRequest weatherRequest = m_pendingRequests.first();
+        PhysicalQuantities::CLength maxDistance(100.0, CLengthUnit::km());
+
+        for (IWeatherData *plugin : m_weatherDataPlugins)
+        {
+            plugin->fetchWeatherData(weatherRequest.weatherGrid, maxDistance);
+        }
+    }
+
+    void CWeatherManager::handleNextRequest()
+    {
+        Q_ASSERT(!m_pendingRequests.isEmpty());
+
+        IWeatherData *weatherDataPlugin = qobject_cast<IWeatherData *>(sender());
+        Q_ASSERT(weatherDataPlugin);
+        auto fetchedWeatherGrid = weatherDataPlugin->getWeatherData();
+
+        const WeatherRequest weatherRequest = m_pendingRequests.first();
+        CWeatherGrid requestedWeatherGrid = weatherRequest.weatherGrid;
+
+        // Interpolation. So far it just picks the closest point without interpolation.
+        for (CGridPoint &gridPoint : requestedWeatherGrid)
+        {
+            const auto nearestGridPoint = fetchedWeatherGrid.findClosest(1, gridPoint.getPosition()).frontOrDefault();
+            gridPoint.copyWeatherDataFrom(nearestGridPoint);
+        }
+
+        weatherRequest.callback(requestedWeatherGrid);
+        m_pendingRequests.pop_front();
+
+        // In case there are pending requests, start over again
+        if (m_pendingRequests.size() > 0) { fetchNextWeatherData(); }
+    }
+
+}

src/blackcore/weathermanager.h

@@ -0,0 +1,73 @@
+/* Copyright (C) 2016
+ * 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_WEATHERMANAGER_H
+#define BLACKCORE_WEATHERMANAGER_H
+
+#include "blackcore/blackcoreexport.h"
+#include "blackcore/pluginmanagerweatherdata.h"
+#include "blackmisc/geo/coordinategeodetic.h"
+#include "blackmisc/weather/weathergrid.h"
+#include "blackmisc/weather/weathergridprovider.h"
+#include "blackmisc/slot.h"
+#include <QObject>
+#include <functional>
+
+namespace BlackCore
+{
+    class IWeatherData;
+
+    /*!
+     * CWeatherManager
+     */
+    class BLACKCORE_EXPORT CWeatherManager :
+            public QObject,
+            public BlackMisc::Weather::IWeatherGridProvider
+    {
+        Q_OBJECT
+        Q_INTERFACES(BlackMisc::Weather::IWeatherGridProvider)
+
+    public:
+        //! Default constructor
+        CWeatherManager(QObject *parent = nullptr);
+
+        //! Override weather to clear
+        void setWeatherToClear(bool value);
+
+        //! Is weather overwritten to clear?
+        bool isWeatherClear() const { return m_isWeatherClear; }
+
+        //! Request weather by grid
+        virtual void requestWeatherGrid(const BlackMisc::Weather::CWeatherGrid &weatherGrid,
+                                        const BlackMisc::CSlot<void(const BlackMisc::Weather::CWeatherGrid &)> &callback) override;
+
+    private:
+        struct WeatherRequest
+        {
+            BlackMisc::Weather::CWeatherGrid weatherGrid;
+            BlackMisc::CSlot<void(const BlackMisc::Weather::CWeatherGrid &)> callback;
+        };
+
+        bool loadWeatherDataPlugins();
+
+        void fetchNextWeatherData();
+        void handleNextRequest();
+
+        CPluginManagerWeatherData m_pluginManagerWeatherData { this };
+        QVector<IWeatherData *> m_weatherDataPlugins;
+        QVector<WeatherRequest> m_pendingRequests;
+        BlackMisc::Weather::CWeatherGrid m_weatherGrid;
+        bool m_isWeatherClear = false;
+    };
+
+} // ns
+
+#endif // guard

src/blackmisc/weather/gridpoint.cpp

@@ -13,6 +13,7 @@
 
 using namespace BlackMisc::Aviation;
 using namespace BlackMisc::Geo;
+using namespace BlackMisc::PhysicalQuantities;
 
 namespace BlackMisc
 {
@@ -28,6 +29,14 @@ namespace BlackMisc
             m_windLayers(windLayers)
         { }
 
+        void CGridPoint::copyWeatherDataFrom(const CGridPoint &other)
+        {
+            setCloudLayers(other.getCloudLayers());
+            setTemperatureLayers(other.getTemperatureLayers());
+            setVisibilityLayers(other.getVisibilityLayers());
+            setWindLayers(other.getWindLayers());
+        }
+
         CVariant CGridPoint::propertyByIndex(const BlackMisc::CPropertyIndex &index) const
         {
             if (index.isMyself()) { return CVariant::from(*this); }

src/blackmisc/weather/gridpoint.h

@@ -80,6 +80,9 @@ namespace BlackMisc
             //! Get wind layers
             CWindLayerList getWindLayers() const { return m_windLayers; }
 
+            //! Copies all weather data from other without modifying identifier and position.
+            void copyWeatherDataFrom(const CGridPoint &other);
+
             //! \copydoc BlackMisc::Mixin::Index::propertyByIndex
             CVariant propertyByIndex(const BlackMisc::CPropertyIndex &index) const;