implement support to download the persist file from entity server status page

assignment-client/src/octree/OctreeServer.cpp

@@ -317,6 +317,7 @@ bool OctreeServer::handleHTTPRequest(HTTPConnection* connection, const QUrl& url
 #endif
 
     bool showStats = false;
+    QString persistFile = "/" + getPersistFilename();
 
     if (connection->requestOperation() == QNetworkAccessManager::GetOperation) {
         if (url.path() == "/") {
@@ -326,6 +327,18 @@ bool OctreeServer::handleHTTPRequest(HTTPConnection* connection, const QUrl& url
             _tree->resetEditStats();
             resetSendingStats();
             showStats = true;
+        } else if ((url.path() == persistFile) || (url.path() == persistFile + "/")) {
+            if (_persistFileDownload) {
+                QByteArray persistFileContents = getPersistFileContents();
+                if (persistFileContents.length() > 0) {
+                    connection->respond(HTTPConnection::StatusCode200, persistFileContents, qPrintable(getPersistFileMimeType()));
+                } else {
+                    connection->respond(HTTPConnection::StatusCode500, HTTPConnection::StatusCode500);
+                }
+            } else {
+                connection->respond(HTTPConnection::StatusCode403, HTTPConnection::StatusCode403); // not allowed
+            }
+            return true;
         }
     }
 
@@ -367,6 +380,12 @@ bool OctreeServer::handleHTTPRequest(HTTPConnection* connection, const QUrl& url
             statsString += getFileLoadTime();
             statsString += "\r\n";
 
+            if (_persistFileDownload) {
+                statsString += QString("Persist file: <a href='%1'>%1</a>\r\n").arg(persistFile);
+            } else {
+                statsString += QString("Persist file: %1\r\n").arg(persistFile);
+            }
+
         } else {
             statsString += "Octree file not yet loaded...\r\n";
         }
@@ -1026,7 +1045,8 @@ bool OctreeServer::readConfiguration() {
         _wantBackup = !noBackup;
         qDebug() << "wantBackup=" << _wantBackup;
 
-        //qDebug() << "settingsSectionObject:" << settingsSectionObject;
+        readOptionBool(QString("persistFileDownload"), settingsSectionObject, _persistFileDownload);
+        qDebug() << "persistFileDownload=" << _persistFileDownload;
 
     } else {
         qDebug("persistFilename= DISABLED");

assignment-client/src/octree/OctreeServer.h

@@ -59,6 +59,9 @@ public:
     bool isInitialLoadComplete() const { return (_persistThread) ? _persistThread->isInitialLoadComplete() : true; }
     bool isPersistEnabled() const { return (_persistThread) ? true : false; }
     quint64 getLoadElapsedTime() const { return (_persistThread) ? _persistThread->getLoadElapsedTime() : 0; }
+    QString getPersistFilename() const { return (_persistThread) ? _persistThread->getPersistFilename() : ""; }
+    QString getPersistFileMimeType() const { return (_persistThread) ? _persistThread->getPersistFileMimeType() : "text/plain"; }
+    QByteArray getPersistFileContents() const { return (_persistThread) ? _persistThread->getPersistFileContents() : QByteArray(); }
 
     // Subclasses must implement these methods
     virtual OctreeQueryNode* createOctreeQueryNode() = 0;
@@ -173,6 +176,7 @@ protected:
 
     int _persistInterval;
     bool _wantBackup;
+    bool _persistFileDownload;
     QString _backupExtensionFormat;
     int _backupInterval;
     int _maxBackupVersions;

domain-server/resources/describe-settings.json

@@ -476,6 +476,14 @@
           "default": "",
           "advanced": true
         },
+        {
+          "name": "persistFileDownload",
+          "type": "checkbox",
+          "label": "Persist File Download",
+          "help": "Includes a download link to the persist file in the server status page.",
+          "default": false,
+          "advanced": true
+        },
         {
           "name": "wantEditLogging",
           "type": "checkbox",

libraries/embedded-webserver/src/HTTPConnection.cpp

@@ -23,7 +23,9 @@ const char* HTTPConnection::StatusCode301 = "301 Moved Permanently";
 const char* HTTPConnection::StatusCode302 = "302 Found";
 const char* HTTPConnection::StatusCode400 = "400 Bad Request";
 const char* HTTPConnection::StatusCode401 = "401 Unauthorized";
+const char* HTTPConnection::StatusCode403 = "403 Forbidden";
 const char* HTTPConnection::StatusCode404 = "404 Not Found";
+const char* HTTPConnection::StatusCode500 = "500 Internal server error";
 const char* HTTPConnection::DefaultContentType = "text/plain; charset=ISO-8859-1";
 
 HTTPConnection::HTTPConnection (QTcpSocket* socket, HTTPManager* parentManager) :

libraries/embedded-webserver/src/HTTPConnection.h

@@ -47,7 +47,9 @@ public:
     static const char* StatusCode302;
     static const char* StatusCode400;
     static const char* StatusCode401;
+    static const char* StatusCode403;
     static const char* StatusCode404;
+    static const char* StatusCode500;
     static const char* DefaultContentType;
 
     /// WebSocket close status codes.

libraries/octree/src/OctreePersistThread.cpp

@@ -52,6 +52,15 @@ OctreePersistThread::OctreePersistThread(OctreePointer tree, const QString& file
     _filename = sansExt + "." + _persistAsFileType;
 }
 
+QString OctreePersistThread::getPersistFileMimeType() const {
+    if (_persistAsFileType == "json") {
+        return "application/json";
+    } if (_persistAsFileType == "json.gz") {
+        return "application/zip";
+    }
+    return "";
+}
+
 void OctreePersistThread::parseSettings(const QJsonObject& settings) {
     if (settings["backups"].isArray()) {
         const QJsonArray& backupRules = settings["backups"].toArray();
@@ -229,6 +238,15 @@ void OctreePersistThread::aboutToFinish() {
     _stopThread = true;
 }
 
+QByteArray OctreePersistThread::getPersistFileContents() const {
+    QByteArray fileContents;
+    QFile file(_filename);
+    if (file.open(QIODevice::ReadOnly)) {
+        fileContents = file.readAll();
+    }
+    return fileContents;
+}
+
 void OctreePersistThread::persist() {
     if (_tree->isDirty()) {
 

libraries/octree/src/OctreePersistThread.h

@@ -42,6 +42,10 @@ public:
 
     void aboutToFinish(); /// call this to inform the persist thread that the owner is about to finish to support final persist
 
+    QString getPersistFilename() const { return _filename; }
+    QString getPersistFileMimeType() const;
+    QByteArray getPersistFileContents() const;
+
 signals:
     void loadCompleted();