refs #467 Only send a log message via DBus if it matches a pattern to which another process has subscribed.

src/blackcore/context_application.cpp

@@ -111,6 +111,17 @@ namespace BlackCore
         CInputManager::instance()->setForwarding(true);
     }
 
+    CIdentifierList IContextApplication::subscribersOf(const CStatusMessage &message) const
+    {
+        CIdentifierList result;
+        for (auto it = m_logSubscriptions.begin(); it != m_logSubscriptions.end(); ++it)
+        {
+            bool match = std::any_of(it->begin(), it->end(), [&message](const CLogPattern &pattern) { return pattern.match(message); });
+            if (match) { result.push_back(it.key()); }
+        }
+        return result;
+    }
+
     void IContextApplication::changeSettings(const CVariantMap &settings, const CIdentifier &origin)
     {
         Q_UNUSED(settings);

src/blackcore/context_application.h

@@ -109,6 +109,9 @@ namespace BlackCore
         void fakedSetComVoiceRoom(const BlackMisc::Audio::CVoiceRoomList &requestedRooms);
 
     protected:
+        //! Compute which process' subscriptions match a given log message.
+        BlackMisc::CIdentifierList subscribersOf(const BlackMisc::CStatusMessage &message) const;
+
         //! Tracks which processes are subscribed to which patterns of log messages.
         CLogSubscriptionHash m_logSubscriptions;
 

src/blackcore/context_application_impl.cpp

@@ -38,7 +38,10 @@ namespace BlackCore
         {
             CLogHandler::instance()->logRemoteMessage(message);
         }
-        emit this->messageLogged(message, origin);
+        if (subscribersOf(message).containsAnyNotIn(CIdentifierList({ origin, {} })))
+        {
+            emit this->messageLogged(message, origin);
+        }
     }
 
     void CContextApplication::addLogSubscription(const CIdentifier &subscriber, const CLogPattern &pattern)

src/blackcore/context_application_proxy.cpp

@@ -65,7 +65,10 @@ namespace BlackCore
 
     void CContextApplicationProxy::logMessage(const CStatusMessage &message, const CIdentifier &origin)
     {
-        this->m_dBusInterface->callDBus(QLatin1Literal("logMessage"), message, origin);
+        if (subscribersOf(message).containsAnyNotIn(CIdentifierList({ origin, {} })))
+        {
+            this->m_dBusInterface->callDBus(QLatin1Literal("logMessage"), message, origin);
+        }
     }
 
     void CContextApplicationProxy::addLogSubscription(const CIdentifier &subscriber, const CLogPattern &pattern)