add ability for domain-server to restart after setting save

domain-server/src/DomainServer.cpp

@@ -30,6 +30,8 @@
 
 #include "DomainServer.h"
 
+int const DomainServer::EXIT_CODE_REBOOT = 234923;
+
 DomainServer::DomainServer(int argc, char* argv[]) :
     QCoreApplication(argc, argv),
     _shutdownEventListener(this),
@@ -56,7 +58,7 @@ DomainServer::DomainServer(int argc, char* argv[]) :
     QSettings::setDefaultFormat(QSettings::IniFormat);
     
     _settingsManager.loadSettingsMap(arguments());
-
+    
     installNativeEventFilter(&_shutdownEventListener);
     connect(&_shutdownEventListener, SIGNAL(receivedCloseEvent()), SLOT(quit()));
     
@@ -77,6 +79,11 @@ DomainServer::DomainServer(int argc, char* argv[]) :
     }
 }
 
+void DomainServer::restart() {
+    qDebug() << "domain-server is restarting.";
+    exit(DomainServer::EXIT_CODE_REBOOT);
+}
+
 bool DomainServer::optionallyReadX509KeyAndCertificate() {
     const QString X509_CERTIFICATE_OPTION = "cert";
     const QString X509_PRIVATE_KEY_OPTION = "key";

domain-server/src/DomainServer.h

@@ -35,16 +35,17 @@
 typedef QSharedPointer<Assignment> SharedAssignmentPointer;
 typedef QMultiHash<QUuid, WalletTransaction*> TransactionHash;
 
+
 class DomainServer : public QCoreApplication, public HTTPSRequestHandler {
     Q_OBJECT
 public:
     DomainServer(int argc, char* argv[]);
     
+    static int const EXIT_CODE_REBOOT;
+    
     bool handleHTTPRequest(HTTPConnection* connection, const QUrl& url);
     bool handleHTTPSRequest(HTTPSConnection* connection, const QUrl& url);
     
-    void exit(int retCode = 0);
-    
 public slots:
     /// Called by NodeList to inform us a node has been added
     void nodeAdded(SharedNodePointer node);
@@ -53,6 +54,8 @@ public slots:
     
     void transactionJSONCallback(const QJsonObject& data);
     
+    void restart();
+    
 private slots:
     void loginFailed();
     void readAvailableDatagrams();

domain-server/src/DomainServerSettingsManager.cpp

@@ -146,6 +146,10 @@ bool DomainServerSettingsManager::handleAuthenticatedHTTPRequest(HTTPConnection
         QString jsonSuccess = "{\"status\": \"success\"}";
         connection->respond(HTTPConnection::StatusCode200, jsonSuccess.toUtf8(), "application/json");
         
+        // defer a restart to the domain-server, this gives our HTTPConnection enough time to respond
+        const int DOMAIN_SERVER_RESTART_TIMER_MSECS = 1000;
+        QTimer::singleShot(DOMAIN_SERVER_RESTART_TIMER_MSECS, qApp, SLOT(restart()));
+        
         return true;
     }
     

domain-server/src/DomainServerSettingsManager.h

@@ -28,6 +28,8 @@ public:
     
     QByteArray getJSONSettingsMap() const;
     const QVariantMap& getSettingsMap() const { return _settingsMap; }
+signals:
+    void saveRequiresRestart();
 private:
     void recurseJSONObjectAndOverwriteSettings(const QJsonObject& postedObject, QVariantMap& settingsVariant,
                                                QJsonArray descriptionArray);

domain-server/src/main.cpp

@@ -28,8 +28,16 @@ int main(int argc, char* argv[]) {
 #endif
     
     qInstallMessageHandler(Logging::verboseMessageHandler);
-    DomainServer domainServer(argc, argv);
     
-    return domainServer.exec();
+    int currentExitCode = 0;
+    
+    // use a do-while to handle domain-server restart
+    do {
+        DomainServer domainServer(argc, argv);
+        currentExitCode = domainServer.exec();
+    } while (currentExitCode == DomainServer::EXIT_CODE_REBOOT);
+    
+    
+    return currentExitCode;
 }