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/****************************************************************************
**
** Copyright (C) 2017 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of the QtOpcUa module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL3$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see http://www.qt.io/terms-conditions. For further
** information use the contact form at http://www.qt.io/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 3 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPLv3 included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 3 requirements
** will be met: https://www.gnu.org/licenses/lgpl.html.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 2.0 or later as published by the Free
** Software Foundation and appearing in the file LICENSE.GPL included in
** the packaging of this file. Please review the following information to
** ensure the GNU General Public License version 2.0 requirements will be
** met: http://www.gnu.org/licenses/gpl-2.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QOPEN62541SUBSCRIPTION_H
#define QOPEN62541SUBSCRIPTION_H
#include "qopen62541.h"
#include <QtOpcUa/qopcuanode.h>
QT_BEGIN_NAMESPACE
class Open62541AsyncBackend;
class QOpen62541Subscription
{
public:
QOpen62541Subscription(Open62541AsyncBackend *backend, const QOpcUaMonitoringParameters &settings);
~QOpen62541Subscription();
UA_UInt32 createOnServer();
bool removeOnServer();
void modifyMonitoring(uintptr_t handle, QOpcUa::NodeAttribute attr, QOpcUaMonitoringParameters::Parameter item, QVariant value);
bool addAttributeMonitoredItem(uintptr_t handle, QOpcUa::NodeAttribute attr, const UA_NodeId &id, QOpcUaMonitoringParameters settings);
bool removeAttributeMonitoredItem(uintptr_t handle, QOpcUa::NodeAttribute attr);
void monitoredValueUpdated(UA_UInt32 monId, UA_DataValue *value);
struct MonitoredItem {
uintptr_t handle;
QOpcUa::NodeAttribute attr;
UA_UInt32 monitoredItemId;
MonitoredItem(uintptr_t h, QOpcUa::NodeAttribute a, UA_UInt32 id)
: handle(h)
, attr(a)
, monitoredItemId(id)
{}
MonitoredItem()
: handle(0)
, monitoredItemId(0)
{}
};
double interval() const;
UA_UInt32 subscriptionId() const;
int monitoredItemsCount() const;
QOpcUaMonitoringParameters::SubscriptionType shared() const;
private:
MonitoredItem *getItemForAttribute(uintptr_t handle, QOpcUa::NodeAttribute attr);
Open62541AsyncBackend *m_backend;
double m_interval;
UA_UInt32 m_subscriptionId;
UA_UInt32 m_lifetimeCount;
UA_UInt32 m_maxKeepaliveCount;
QOpcUaMonitoringParameters::SubscriptionType m_shared;
quint8 m_priority;
QHash<uintptr_t, QHash<QOpcUa::NodeAttribute, MonitoredItem *>> m_handleToItemMapping; // Handle -> Attribute -> MonitoredItem
QHash<UA_UInt32, MonitoredItem *> m_itemIdToItemMapping; // ItemId -> Item for fast lookup on data change
};
QT_END_NAMESPACE
#endif // QOPEN62541SUBSCRIPTION_H
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