hyperion.ng/libsrc/jsonserver/JsonClientConnection.h
redpanther b01b5eb005 - prepare general way to send (proto) messages. currently only incomming protomessages are forwarded
- begin impl. of json server


Former-commit-id: 8f9237cd57ada1e84dc05e60b9ad723e47fd57b1
2016-02-15 18:25:18 +01:00

184 lines
3.9 KiB
C++

#pragma once
// stl includes
#include <string>
// Qt includes
#include <QByteArray>
#include <QTcpSocket>
// jsoncpp includes
#include <json/json.h>
// Hyperion includes
#include <hyperion/Hyperion.h>
// util includes
#include <utils/jsonschema/JsonSchemaChecker.h>
class ImageProcessor;
///
/// The Connection object created by \a JsonServer when a new connection is establshed
///
class JsonClientConnection : public QObject
{
Q_OBJECT
public:
///
/// Constructor
/// @param socket The Socket object for this connection
/// @param hyperion The Hyperion server
///
JsonClientConnection(QTcpSocket * socket, Hyperion * hyperion);
///
/// Destructor
///
~JsonClientConnection();
signals:
///
/// Signal which is emitted when the connection is being closed
/// @param connection This connection object
///
void connectionClosed(JsonClientConnection * connection);
private slots:
///
/// Slot called when new data has arrived
///
void readData();
///
/// Slot called when this connection is being closed
///
void socketClosed();
private:
///
/// Handle an incoming JSON message
///
/// @param message the incoming message as string
///
void handleMessage(const std::string & message);
///
/// Handle an incoming JSON Color message
///
/// @param message the incoming message
///
void handleColorCommand(const Json::Value & message);
///
/// Handle an incoming JSON Image message
///
/// @param message the incoming message
///
void handleImageCommand(const Json::Value & message);
///
/// Handle an incoming JSON Effect message
///
/// @param message the incoming message
///
void handleEffectCommand(const Json::Value & message);
///
/// Handle an incoming JSON Server info message
///
/// @param message the incoming message
///
void handleServerInfoCommand(const Json::Value & message);
///
/// Handle an incoming JSON Clear message
///
/// @param message the incoming message
///
void handleClearCommand(const Json::Value & message);
///
/// Handle an incoming JSON Clearall message
///
/// @param message the incoming message
///
void handleClearallCommand(const Json::Value & message);
///
/// Handle an incoming JSON Transform message
///
/// @param message the incoming message
///
void handleTransformCommand(const Json::Value & message);
///
/// Handle an incoming JSON message of unknown type
///
void handleNotImplemented();
///
/// Send a message to the connected client
///
/// @param message The JSON message to send
///
void sendMessage(const Json::Value & message);
void sendMessage(const Json::Value & message, QTcpSocket * socket);
///
/// Send a standard reply indicating success
///
void sendSuccessReply();
///
/// Send an error message back to the client
///
/// @param error String describing the error
///
void sendErrorReply(const std::string & error);
///
/// Do handshake for a websocket connection
///
void doWebSocketHandshake();
///
/// Handle incoming websocket data frame
///
void handleWebSocketFrame();
///
/// forward json message
///
void forwardJsonMessage(const Json::Value & message);
private:
///
/// Check if a JSON messag is valid according to a given JSON schema
///
/// @param message JSON message which need to be checked
/// @param schemaResource Qt esource identifier with the JSON schema
/// @param errors Output error message
///
/// @return true if message conforms the given JSON schema
///
bool checkJson(const Json::Value & message, const QString &schemaResource, std::string & errors);
private:
/// The TCP-Socket that is connected tot the Json-client
QTcpSocket * _socket;
/// The processor for translating images to led-values
ImageProcessor * _imageProcessor;
/// Link to Hyperion for writing led-values to a priority channel
Hyperion * _hyperion;
/// The buffer used for reading data from the socket
QByteArray _receiveBuffer;
/// used for WebSocket detection and connection handling
bool _webSocketHandshakeDone;
};