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qt6-migration-pipeline/Lts/DDS/DTC/generic_dtc_impl.h
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#pragma once
#include <DDS/Generic/generic_data_reader.h>
#include <DDS/Generic/subscriber_listener.h>
#include <QTimer>
#include <dds/core/cond/StatusCondition.hpp>
#include <dds/core/cond/WaitSet.hpp>
#include "generic_dtc.h"
namespace DDSGeneric
{
class DynamicDataReader;
}
namespace DTC
{
template<typename SuperClass>
class GenericDtcImplSubscriberTemplate : public DDSGeneric::SubscriberListenerCallback, public SuperClass
{
public:
using DataReaderObject = typename SuperClass::DataReaderObject;
using SubscriberCallback = typename SuperClass::SubscriberCallback;
using TopicTypeRead = typename DataReaderObject::TopicType;
using TopicTypeSubscribe = typename DataReaderObject::TopicType;
using DataReader = typename DataReaderObject::DataReader;
GenericDtcImplSubscriberTemplate(const dds::domain::DomainParticipant &domainParticipant,
const dds::sub::Subscriber &ddsSubscriber,
DDSGeneric::SubscriberListener *subscriberListener,
const std::string &topicName = DDS::Helper::getShortTopicName(DDS::topic_type_name<TopicTypeRead>::value()))
: m_subscriberListener(subscriberListener)
, m_dataReaderObject(new DataReaderObject)
, m_subscriberCallback(nullptr)
, m_writerState(0)
, m_logger(DDS::getLogger(DDS::topic_type_name<TopicTypeRead>::value(), DDS::DataType::DATA_TOPIC_CLIENT))
{
createInternal(m_dataReaderObject->create(domainParticipant, ddsSubscriber, topicName));
}
GenericDtcImplSubscriberTemplate(const dds::domain::DomainParticipant &domainParticipant,
const dds::sub::Subscriber &ddsSubscriber,
DDSGeneric::SubscriberListener *subscriberListener,
const dds::topic::Filter &filter,
const std::string &topicName)
: m_subscriberListener(subscriberListener)
, m_dataReaderObject(new DataReaderObject)
, m_subscriberCallback(nullptr)
, m_writerState(0)
, m_logger(DDS::getLogger(DDS::topic_type_name<TopicTypeRead>::value(), DDS::DataType::DATA_TOPIC_CLIENT))
{
createInternal(m_dataReaderObject->create(domainParticipant, ddsSubscriber, topicName, filter));
}
GenericDtcImplSubscriberTemplate(const dds::domain::DomainParticipant &domainParticipant,
const dds::sub::Subscriber &ddsSubscriber,
DDSGeneric::SubscriberListener *subscriberListener,
const dds::core::xtypes::StructType &structType,
const std::string &topicName)
: m_subscriberListener(subscriberListener)
, m_dataReaderObject(new DataReaderObject)
, m_subscriberCallback(nullptr)
, m_logger(DDS::getLogger(DDS::topic_type_name<TopicTypeRead>::value(), DDS::DataType::DATA_TOPIC_CLIENT))
{
createInternal(m_dataReaderObject->create(domainParticipant, ddsSubscriber, topicName, structType));
}
~GenericDtcImplSubscriberTemplate()
{
if (m_dataReaderObject && m_subscriberCallback)
m_subscriberListener->removeCallback(m_dataReaderObject->getDataReader(), this);
delete m_dataReaderObject;
}
bool setSubscriberCallback(const SubscriberCallback &subscriberCallback) override final
{
if (m_subscriberCallback)
{
WARNING_LOG(m_logger) << "Can not set subscriber callback - already set ...";
return false;
}
if (!m_subscriberListener)
{
WARNING_LOG(m_logger) << "Can not set subscriber callback - no subscriber listener ...";
return false;
}
m_subscriberCallback = subscriberCallback;
if (!m_dataReaderObject)
{
WARNING_LOG(m_logger) << "Can not set subscriber callback - no data reader object ...";
return false;
}
m_dataReaderObject->setHaveSubscriberCallback(m_subscriberCallback != nullptr);
return true;
}
dds::sub::LoanedSamples<TopicTypeRead> readAlive() const override final
{
if (!m_dataReaderObject)
return dds::sub::LoanedSamples<TopicTypeRead>();
bool bSeenUnreadSamples = false;
auto ret = m_dataReaderObject->readAlive(bSeenUnreadSamples);
if (bSeenUnreadSamples)
QTimer::singleShot(0, this, &GenericDtcImplSubscriberTemplate::unreadSamplesDuringRead);
return ret;
}
dds::sub::LoanedSamples<TopicTypeRead> takeAlive() const override final
{
if (!m_dataReaderObject)
return dds::sub::LoanedSamples<TopicTypeRead>();
bool bSeenUnreadSamples = false;
auto ret = m_dataReaderObject->takeAlive(bSeenUnreadSamples);
if (bSeenUnreadSamples)
QTimer::singleShot(0, this, &GenericDtcImplSubscriberTemplate::unreadSamplesDuringRead);
return ret;
}
dds::sub::LoanedSamples<TopicTypeRead> takeDisposed() const override final
{
if (!m_dataReaderObject)
return dds::sub::LoanedSamples<TopicTypeRead>();
return m_dataReaderObject->takeDisposed();
}
bool hasSamples() const override final
{
if (!m_dataReaderObject)
return false;
return m_dataReaderObject->hasSamples();
}
DataReaderObject *dataReader() const override final
{
return m_dataReaderObject;
}
bool waitForHistoricalData(int timeoutMSec) override
{
if (m_dataReaderObject == nullptr ||
m_dataReaderObject->getDataReader() == nullptr)
return false;
const bool bWaitForever = (timeoutMSec < 0);
auto dr = m_dataReaderObject->getDataReader();
try
{
if (dr.subscription_matched_status().current_count() == 0)
{
dds::core::cond::WaitSet ws;
dds::core::cond::StatusCondition cond(dr);
cond.enabled_statuses(dds::core::status::StatusMask::subscription_matched());
ws.attach_condition(cond);
const dds::core::Duration waitTimeout(bWaitForever ? dds::core::Duration::infinite() : dds::core::Duration::from_millisecs(timeoutMSec));
const dds::core::cond::WaitSet::ConditionSeq seq(ws.wait(waitTimeout));
if (seq.empty())
return false;
}
dr.wait_for_historical_data(dds::core::Duration(1));
}
catch (const dds::core::Exception &)
{
return false;
}
return true;
}
protected:
void unreadSamplesDuringRead()
{
droDataAvailable(DDS::topic_type_name<TopicTypeRead>::value(), m_dataReaderObject->topicName());
}
void droDataAvailable(const std::string &topicType, const std::string &topicName) override final
{
Q_UNUSED(topicType);
if (m_writerState.testAndSetRelaxed(1, 0))
{
DEBUG_LOG(m_logger) << "Recreate Reader for topic " << topicName
<< ", type name " << DDS::topic_type_name<TopicTypeRead>::value();
if (m_subscriberListener)
m_subscriberListener->removeCallback(m_dataReaderObject->getDataReader(), this);
m_dataReaderObject->recreateReader();
if (m_subscriberListener)
m_subscriberListener->addCallback(m_dataReaderObject->getDataReader(), this);
}
DEBUG_LOG(m_logger) << "IN droDataAvailable(), topic name: " << topicName
<< ", type name " << DDS::topic_type_name<TopicTypeRead>::value()
<< ", this: " << this
<< ", m_dataReaderObject: " << m_dataReaderObject
<< ", hasSamples: " << (m_dataReaderObject ? m_dataReaderObject->hasSamples() : -1);
if (m_subscriberListener)
m_subscriberListener->enableCallback(m_dataReaderObject->getDataReader(), this);
if (!m_dataReaderObject || !m_subscriberCallback)
return;
m_dataReaderObject->read(m_subscriberCallback);
}
void noWriterAnymore(const std::string &topicType, const std::string &topicName) override
{
Q_UNUSED(topicType);
Q_UNUSED(topicName);
m_writerState = -1;
}
void writerAvailable(const std::string &topicType, const std::string &topicName) override
{
Q_UNUSED(topicType);
Q_UNUSED(topicName);
m_writerState.testAndSetRelaxed(-1, 1);
}
bool createInternal(bool droInitOk)
{
if (!droInitOk)
{
ERROR_LOG(m_logger) << "Error initializing DRO for type " << DDS::topic_type_name<TopicTypeRead>::value();
delete m_dataReaderObject;
m_dataReaderObject = nullptr;
return false;
}
if (m_subscriberListener)
{
DEBUG_LOG(m_logger) << "subscriberListener exists, adding type "
<< DDS::topic_type_name<TopicTypeRead>::value();
m_subscriberListener->addCallback(m_dataReaderObject->getDataReader(), this);
}
else
{
DEBUG_LOG(m_logger) << "Cannot add DTC to subscriberListener callback - type: "
<< DDS::topic_type_name<TopicTypeRead>::value();
}
m_dataReaderObject->setHaveSubscriberCallback(m_subscriberListener != nullptr);
return true;
}
private:
DDSGeneric::SubscriberListener *m_subscriberListener;
DataReaderObject *m_dataReaderObject;
SubscriberCallback m_subscriberCallback;
QAtomicInt m_writerState;
NGL::INGLLogger &m_logger;
};
template<typename DRO_OBJECT>
class GenericDtcImpl final
: public GenericDtcImplSubscriberTemplate<GenericDtc<DRO_OBJECT>>
{
using BaseClass = GenericDtcImplSubscriberTemplate<GenericDtc<DRO_OBJECT>>;
public:
using BaseClass::BaseClass;
};
template<typename DRO_OBJECT>
class GenericDtcImplSampleInfo final
: public GenericDtcImplSubscriberTemplate<GenericDtcSampleInfo<DRO_OBJECT>>
{
using BaseClass = GenericDtcImplSubscriberTemplate<GenericDtcSampleInfo<DRO_OBJECT>>;
public:
using BaseClass::BaseClass;
};
template<typename DRO_OBJECT>
class DdtcImpl final
: public GenericDtcImplSubscriberTemplate<Ddtc<DRO_OBJECT>>
{
using BaseClass = GenericDtcImplSubscriberTemplate<Ddtc<DRO_OBJECT>>;
public:
using BaseClass::BaseClass;
};
template<typename DRO_OBJECT>
class DdtcImplSampleInfo final
: public GenericDtcImplSubscriberTemplate<DdtcSampleInfo<DRO_OBJECT>>
{
using BaseClass = GenericDtcImplSubscriberTemplate<DdtcSampleInfo<DRO_OBJECT>>;
public:
using BaseClass::BaseClass;
};
}