qopen62541subscription.h

qt/qtopcua/src/plugins/opcua/open62541/qopen62541subscription.h (file symbol)

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// Copyright (C) 2017 The Qt Company Ltd.

// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only

// Qt-Security score:significant reason:default

#ifndef QOPEN62541SUBSCRIPTION_H

#define QOPEN62541SUBSCRIPTION_H

#ifdef USE_SYSTEM_OPEN62541

#include <open62541/client_subscriptions.h>

#else

#include "qopen62541.h"

#endif

#include <QtOpcUa/qopcuanode.h>

QT_BEGIN_NAMESPACE

class Open62541AsyncBackend;

class QOpen62541Subscription : public QObject

    Q_OBJECT

public:

    QOpen62541Subscription(Open62541AsyncBackend *backend, const QOpcUaMonitoringParameters &settings);

    ~QOpen62541Subscription();

    UA_UInt32 createOnServer();

    bool removeOnServer();

    void modifyMonitoring(quint64 handle, QOpcUa::NodeAttribute attr, QOpcUaMonitoringParameters::Parameter item, QVariant value);

    bool addAttributeMonitoredItem(quint64 handle, QOpcUa::NodeAttribute attr, const UA_NodeId &id, QOpcUaMonitoringParameters settings);

    bool removeAttributeMonitoredItem(quint64 handle, QOpcUa::NodeAttribute attr);

    void monitoredValueUpdated(UA_UInt32 monId, UA_DataValue *value);

    void eventReceived(UA_UInt32 monId, QVariantList list);

    void sendTimeoutNotification();

    struct MonitoredItem {

        quint64 handle;

        QOpcUa::NodeAttribute attr;

        UA_UInt32 monitoredItemId;

        UA_UInt32 clientHandle;

        QOpcUaMonitoringParameters parameters;

        MonitoredItem(quint64 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;

signals:

    void timeout(QOpen62541Subscription *sub, QList<std::pair<quint64, QOpcUa::NodeAttribute>> items);

private:

    MonitoredItem *getItemForAttribute(quint64 nodeHandle, QOpcUa::NodeAttribute attr);

    UA_ExtensionObject createFilter(const QVariant &filterData);

    void createDataChangeFilter(const QOpcUaMonitoringParameters::DataChangeFilter &filter, UA_ExtensionObject *out);

    bool modifySubscriptionParameters(quint64 nodeHandle, QOpcUa::NodeAttribute attr, const QOpcUaMonitoringParameters::Parameter &item, const QVariant &value);

    bool modifyMonitoredItemParameters(quint64 nodeHandle, QOpcUa::NodeAttribute attr, const QOpcUaMonitoringParameters::Parameter &item, const QVariant &value);

    QOpcUaEventFilterResult convertEventFilterResult(UA_ExtensionObject *obj);

    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;

    quint32 m_maxNotificationsPerPublish;

    QHash<quint64, QHash<QOpcUa::NodeAttribute, MonitoredItem *>> m_nodeHandleToItemMapping; // Handle -> Attribute -> MonitoredItem

    QHash<UA_UInt32, MonitoredItem *> m_itemIdToItemMapping; // ItemId -> Item for fast lookup on data change

    quint32 m_clientHandle;

    bool m_timeout;

};

QT_END_NAMESPACE

#endif // QOPEN62541SUBSCRIPTION_H