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/*
* Copyright (C) 2016 Christian Mollekopf <mollekopf@kolabsys.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) version 3, or any
* later version accepted by the membership of KDE e.V. (or its
* successor approved by the membership of KDE e.V.), which shall
* act as a proxy defined in Section 6 of version 3 of the license.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
#include "sourcewriteback.h"
#include "definitions.h"
#include "log.h"
#define ENTITY_TYPE_MAIL "mail"
#define ENTITY_TYPE_FOLDER "folder"
using namespace Sink;
SourceWriteBack::SourceWriteBack(const QByteArray &resourceType, const QByteArray &resourceInstanceIdentifier)
: ChangeReplay(resourceInstanceIdentifier),
mSyncStorage(Sink::storageLocation(), resourceInstanceIdentifier + ".synchronization", Sink::Storage::ReadWrite),
mResourceType(resourceType),
mResourceInstanceIdentifier(resourceInstanceIdentifier)
{
}
EntityStore &SourceWriteBack::store()
{
if (!mEntityStore) {
mEntityStore = QSharedPointer<EntityStore>::create(mResourceType, mResourceInstanceIdentifier, mTransaction);
}
return *mEntityStore;
}
RemoteIdMap &SourceWriteBack::syncStore()
{
if (!mSyncStore) {
mSyncStore = QSharedPointer<RemoteIdMap>::create(mSyncTransaction);
}
return *mSyncStore;
}
KAsync::Job<void> SourceWriteBack::replay(const QByteArray &type, const QByteArray &key, const QByteArray &value)
{
mTransaction = mStorage.createTransaction(Sink::Storage::ReadOnly);
mSyncTransaction = mSyncStorage.createTransaction(Sink::Storage::ReadWrite);
Sink::EntityBuffer buffer(value);
const Sink::Entity &entity = buffer.entity();
const auto metadataBuffer = Sink::EntityBuffer::readBuffer<Sink::Metadata>(entity.metadata());
Q_ASSERT(metadataBuffer);
if (!metadataBuffer->replayToSource()) {
Trace() << "Change is coming from the source";
return KAsync::null<void>();
}
const qint64 revision = metadataBuffer ? metadataBuffer->revision() : -1;
const auto operation = metadataBuffer ? metadataBuffer->operation() : Sink::Operation_Creation;
const auto uid = Sink::Storage::uidFromKey(key);
QByteArray oldRemoteId;
if (operation != Sink::Operation_Creation) {
oldRemoteId = syncStore().resolveLocalId(type, uid);
}
Trace() << "Replaying " << key << type;
KAsync::Job<QByteArray> job = KAsync::null<QByteArray>();
if (type == ENTITY_TYPE_FOLDER) {
auto folder = store().read<ApplicationDomain::Folder>(uid);
job = replay(folder, operation, oldRemoteId);
} else if (type == ENTITY_TYPE_MAIL) {
auto mail = store().read<ApplicationDomain::Mail>(uid);
job = replay(mail, operation, oldRemoteId);
}
return job.then<void, QByteArray>([this, operation, type, uid](const QByteArray &remoteId) {
Trace() << "Replayed change with remote id: " << remoteId;
if (operation == Sink::Operation_Creation) {
if (remoteId.isEmpty()) {
Warning() << "Returned an empty remoteId from the creation";
} else {
syncStore().recordRemoteId(type, uid, remoteId);
}
} else if (operation == Sink::Operation_Modification) {
if (remoteId.isEmpty()) {
Warning() << "Returned an empty remoteId from the creation";
} else {
syncStore().updateRemoteId(type, uid, remoteId);
}
} else if (operation == Sink::Operation_Removal) {
syncStore().removeRemoteId(type, uid, remoteId);
} else {
Warning() << "Unkown operation" << operation;
}
mTransaction.abort();
mSyncTransaction.commit();
mSyncStore.clear();
mEntityStore.clear();
}, [](int errorCode, const QString &errorMessage) {
Warning() << "Failed to replay change: " << errorMessage;
});
}
KAsync::Job<QByteArray> SourceWriteBack::replay(const ApplicationDomain::Mail &, Sink::Operation, const QByteArray &)
{
return KAsync::null<QByteArray>();
}
KAsync::Job<QByteArray> SourceWriteBack::replay(const ApplicationDomain::Folder &, Sink::Operation, const QByteArray &)
{
return KAsync::null<QByteArray>();
}
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