Issue #15 Classes for sharing the history of log messages

src/blackcore/corefacade.cpp

@@ -18,6 +18,7 @@
 #include "blackcore/context/contextownaircraftimpl.h"
 #include "blackcore/context/contextsimulator.h"
 #include "blackmisc/sharedstate/datalinkdbus.h"
+#include "blackmisc/loghistory.h"
 #include "blackcore/context/contextsimulatorimpl.h"
 #include "blackcore/data/launchersetup.h"
 #include "blackcore/corefacadeconfig.h"
@@ -123,6 +124,15 @@ namespace BlackCore
             qFatal("Invalid application context mode");
         }
 
+        // shared log history
+        m_logHistorySource = new CLogHistorySource(this);
+        m_logHistorySource->initialize(m_dataLinkDBus);
+        if (m_config.hasLocalCore())
+        {
+            m_logHistory = new CLogHistory(this);
+            m_logHistory->initialize(m_dataLinkDBus);
+        }
+
         // contexts
         if (m_contextApplication) { m_contextApplication->deleteLater(); }
         m_contextApplication = IContextApplication::create(this, m_config.getModeApplication(), m_dbusServer, m_dbusConnection);
@@ -331,6 +341,10 @@ namespace BlackCore
         disconnect(this);
 
         // tear down shared state infrastructure
+        delete m_logHistory;
+        m_logHistory = nullptr;
+        delete m_logHistorySource;
+        m_logHistorySource = nullptr;
         delete m_dataLinkDBus;
         m_dataLinkDBus = nullptr;
 

src/blackcore/corefacade.h

@@ -26,6 +26,8 @@
 namespace BlackMisc
 {
     class CDBusServer;
+    class CLogHistory;
+    class CLogHistorySource;
 
     namespace SharedState
     {
@@ -68,6 +70,9 @@ namespace BlackCore
         //! Destructor
         virtual ~CCoreFacade() override { this->gracefulShutdown(); }
 
+        //! Transport mechanism for sharing state between applications
+        BlackMisc::SharedState::CDataLinkDBus *getDataLinkDBus() { return this->m_dataLinkDBus; }
+
         //! DBus server (if applicable)
         const BlackMisc::CDBusServer *getDBusServer() const { return this->m_dbusServer; }
 
@@ -191,6 +196,8 @@ namespace BlackCore
 
         // shared state infrastructure
         BlackMisc::SharedState::CDataLinkDBus *m_dataLinkDBus = nullptr;
+        BlackMisc::CLogHistory *m_logHistory = nullptr;
+        BlackMisc::CLogHistorySource *m_logHistorySource = nullptr;
 
         // contexts:
         // There is a reason why we do not use smart pointers here. When the context is deleted

src/blackcore/corefacadeconfig.h

@@ -73,6 +73,9 @@ namespace BlackCore
         //! Local settings?
         bool hasLocalSettings() const { return m_settings == Local || m_settings == LocalInDBusServer; }
 
+        //! Local core?
+        bool hasLocalCore() const { return m_application == Local || m_application == LocalInDBusServer; }
+
         //! Requires server (at least one in server)?
         bool requiresDBusSever() const;