void handleRequest() override
{
QString msg = QLatin1String("unimplemented command \"")
+ req.value(QLatin1String("command")).toString()
+ QLatin1Char('"');
createErrorResponse(msg);
}
void JsonRpcServer::jsonRequestReceived(const QJsonObject& request,
QObject* socket)
{
JCON_ASSERT(request.value("jsonrpc").toString() == "2.0");
if (request.value("jsonrpc").toString() != "2.0") {
logError("invalid protocol tag");
return;
}
QString method_name = request.value("method").toString();
if (method_name.isEmpty()) {
logError("no method present in request");
}
QVariant params = request.value("params").toVariant();
QString request_id = request.value("id").toString(InvalidRequestId);
QVariant return_value;
if (!dispatch(method_name, params, request_id, return_value)) {
auto msg = QString("method '%1' not found, check name and "
"parameter types ").arg(method_name);
logError(msg);
// send error response if request had valid ID
if (request_id != InvalidRequestId) {
QJsonDocument error =
createErrorResponse(request_id,
JsonRpcError::EC_MethodNotFound,
msg);
JsonRpcEndpoint* endpoint = findClient(socket);
if (!endpoint) {
logError("invalid client socket, cannot send response");
return;
}
endpoint->send(error);
return;
}
}
// send response if request had valid ID
if (request_id != InvalidRequestId) {
QJsonDocument response = createResponse(request_id,
return_value,
method_name);
JsonRpcEndpoint* endpoint = findClient(socket);
if (!endpoint) {
logError("invalid client socket, cannot send response");
return;
}
endpoint->send(response);
}
}
QJsonDocument JsonRpcServer::createResponse(const QString& request_id,
const QVariant& return_value,
const QString& method_name)
{
QJsonObject res_json_obj {
{ "jsonrpc", "2.0" },
{ "id", request_id }
};
if (return_value.type() == QVariant::Invalid) {
res_json_obj["result"] = QJsonValue();
} else if (return_value.type() == QVariant::List) {
auto ret_doc = QJsonDocument::fromVariant(return_value);
res_json_obj["result"] = ret_doc.array();
} else if (return_value.type() == QVariant::Map) {
auto ret_doc = QJsonDocument::fromVariant(return_value);
res_json_obj["result"] = ret_doc.object();
} else if (return_value.type() == QVariant::Int) {
res_json_obj["result"] = return_value.toInt();
} else if (return_value.type() == QVariant::LongLong) {
res_json_obj["result"] = return_value.toLongLong();
} else if (return_value.type() == QVariant::Double) {
res_json_obj["result"] = return_value.toDouble();
} else if (return_value.type() == QVariant::Bool) {
res_json_obj["result"] = return_value.toBool();
} else if (return_value.type() == QVariant::String) {
res_json_obj["result"] = return_value.toString();
} else {
auto msg =
QString("method '%1' has unknown return type: %2")
.arg(method_name)
.arg(return_value.type());
logError(msg);
return createErrorResponse(request_id,
JsonRpcError::EC_InvalidRequest,
msg);
}
return QJsonDocument(res_json_obj);
}
