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/*
* Copyright (C) 2015 Christian Mollekopf <chrigi_1@fastmail.fm>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the
* Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "facade.h"
#include "commands.h"
#include "log.h"
#include "storage.h"
#include "definitions.h"
#include "domainadaptor.h"
#include "queryrunner.h"
#include "bufferutils.h"
using namespace Sink;
#undef DEBUG_AREA
#define DEBUG_AREA "client.facade"
class ResourceAccessFactory {
public:
static ResourceAccessFactory &instance()
{
static ResourceAccessFactory *instance = 0;
if (!instance) {
instance = new ResourceAccessFactory;
}
return *instance;
}
Sink::ResourceAccess::Ptr getAccess(const QByteArray &instanceIdentifier)
{
if (!mCache.contains(instanceIdentifier)) {
//Reuse the pointer if something else kept the resourceaccess alive
if (mWeakCache.contains(instanceIdentifier)) {
auto sharedPointer = mWeakCache.value(instanceIdentifier).toStrongRef();
if (sharedPointer) {
mCache.insert(instanceIdentifier, sharedPointer);
}
}
if (!mCache.contains(instanceIdentifier)) {
//Create a new instance if necessary
auto sharedPointer = Sink::ResourceAccess::Ptr::create(instanceIdentifier);
QObject::connect(sharedPointer.data(), &Sink::ResourceAccess::ready, sharedPointer.data(), [this, instanceIdentifier](bool ready) {
if (!ready) {
mCache.remove(instanceIdentifier);
}
});
mCache.insert(instanceIdentifier, sharedPointer);
mWeakCache.insert(instanceIdentifier, sharedPointer);
}
}
if (!mTimer.contains(instanceIdentifier)) {
auto timer = new QTimer;
//Drop connection after 3 seconds (which is a random value)
QObject::connect(timer, &QTimer::timeout, timer, [this, instanceIdentifier]() {
mCache.remove(instanceIdentifier);
});
timer->setInterval(3000);
mTimer.insert(instanceIdentifier, timer);
}
auto timer = mTimer.value(instanceIdentifier);
timer->start();
return mCache.value(instanceIdentifier);
}
QHash<QByteArray, QWeakPointer<Sink::ResourceAccess> > mWeakCache;
QHash<QByteArray, Sink::ResourceAccess::Ptr> mCache;
QHash<QByteArray, QTimer*> mTimer;
};
template<class DomainType>
GenericFacade<DomainType>::GenericFacade(const QByteArray &resourceIdentifier, const DomainTypeAdaptorFactoryInterface::Ptr &adaptorFactory , const QSharedPointer<Sink::ResourceAccessInterface> resourceAccess)
: Sink::StoreFacade<DomainType>(),
mResourceAccess(resourceAccess),
mDomainTypeAdaptorFactory(adaptorFactory),
mResourceInstanceIdentifier(resourceIdentifier)
{
if (!mResourceAccess) {
mResourceAccess = ResourceAccessFactory::instance().getAccess(resourceIdentifier);
}
}
template<class DomainType>
GenericFacade<DomainType>::~GenericFacade()
{
}
template<class DomainType>
QByteArray GenericFacade<DomainType>::bufferTypeForDomainType()
{
//We happen to have a one to one mapping
return Sink::ApplicationDomain::getTypeName<DomainType>();
}
template<class DomainType>
KAsync::Job<void> GenericFacade<DomainType>::create(const DomainType &domainObject)
{
if (!mDomainTypeAdaptorFactory) {
Warning() << "No domain type adaptor factory available";
return KAsync::error<void>();
}
flatbuffers::FlatBufferBuilder entityFbb;
mDomainTypeAdaptorFactory->createBuffer(domainObject, entityFbb);
return mResourceAccess->sendCreateCommand(bufferTypeForDomainType(), BufferUtils::extractBuffer(entityFbb));
}
template<class DomainType>
KAsync::Job<void> GenericFacade<DomainType>::modify(const DomainType &domainObject)
{
if (!mDomainTypeAdaptorFactory) {
Warning() << "No domain type adaptor factory available";
return KAsync::error<void>();
}
flatbuffers::FlatBufferBuilder entityFbb;
mDomainTypeAdaptorFactory->createBuffer(domainObject, entityFbb);
return mResourceAccess->sendModifyCommand(domainObject.identifier(), domainObject.revision(), bufferTypeForDomainType(), QByteArrayList(), BufferUtils::extractBuffer(entityFbb));
}
template<class DomainType>
KAsync::Job<void> GenericFacade<DomainType>::remove(const DomainType &domainObject)
{
return mResourceAccess->sendDeleteCommand(domainObject.identifier(), domainObject.revision(), bufferTypeForDomainType());
}
template<class DomainType>
QPair<KAsync::Job<void>, typename ResultEmitter<typename DomainType::Ptr>::Ptr> GenericFacade<DomainType>::load(const Sink::Query &query)
{
//The runner lives for the lifetime of the query
auto runner = new QueryRunner<DomainType>(query, mResourceAccess, mResourceInstanceIdentifier, mDomainTypeAdaptorFactory, bufferTypeForDomainType());
return qMakePair(KAsync::null<void>(), runner->emitter());
}
template class Sink::GenericFacade<Sink::ApplicationDomain::Folder>;
template class Sink::GenericFacade<Sink::ApplicationDomain::Mail>;
template class Sink::GenericFacade<Sink::ApplicationDomain::Event>;
#include "facade.moc"
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