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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 "genericresource.h"
#include "pipeline.h"
#include "synchronizer.h"
#include "inspector.h"
#include "commandprocessor.h"
#include "definitions.h"
#include "storage.h"
using namespace Sink;
using namespace Sink::Storage;
GenericResource::GenericResource(const ResourceContext &resourceContext, const QSharedPointer<Pipeline> &pipeline )
: Sink::Resource(),
mResourceContext(resourceContext),
mPipeline(pipeline ? pipeline : QSharedPointer<Sink::Pipeline>::create(resourceContext, Log::Context{})),
mProcessor(QSharedPointer<CommandProcessor>::create(mPipeline.data(), resourceContext.instanceId(), Log::Context{})),
mError(0),
mClientLowerBoundRevision(std::numeric_limits<qint64>::max())
{
QObject::connect(mProcessor.data(), &CommandProcessor::error, [this](int errorCode, const QString &msg) { onProcessorError(errorCode, msg); });
QObject::connect(mProcessor.data(), &CommandProcessor::notify, this, &GenericResource::notify);
QObject::connect(mPipeline.data(), &Pipeline::revisionUpdated, this, &Resource::revisionUpdated);
}
GenericResource::~GenericResource()
{
}
void GenericResource::setSecret(const QString &s)
{
if (mSynchronizer) {
mSynchronizer->setSecret(s);
}
if (mInspector) {
mInspector->setSecret(s);
}
}
bool GenericResource::checkForUpgrade()
{
auto store = Sink::Storage::DataStore(Sink::storageLocation(), mResourceContext.instanceId(), Sink::Storage::DataStore::ReadOnly);
//We rely on the store already having been created in the pipeline constructor before this get's called.
Q_ASSERT(store.exists());
const auto currentDatabaseVersion = Storage::DataStore::databaseVersion(store.createTransaction(Storage::DataStore::ReadOnly));
if (currentDatabaseVersion != Sink::latestDatabaseVersion()) {
SinkLog() << "Starting database upgrade from " << currentDatabaseVersion << " to " << Sink::latestDatabaseVersion();
bool nukeDatabases = false;
//Only apply the necessary updates.
for (int i = currentDatabaseVersion; i < Sink::latestDatabaseVersion(); i++) {
//TODO implement specific upgrade paths where applicable, and only nuke otherwise
nukeDatabases = true;
}
if (nukeDatabases) {
SinkLog() << "Wiping all databases during upgrade, you will have to resync.";
//Right now upgrading just means removing all local storage so we will resync
Sink::Storage::DataStore(Sink::storageLocation(), mResourceContext.instanceId(), Sink::Storage::DataStore::ReadWrite).removeFromDisk();
Sink::Storage::DataStore(Sink::storageLocation(), mResourceContext.instanceId() + ".userqueue", Sink::Storage::DataStore::ReadWrite).removeFromDisk();
Sink::Storage::DataStore(Sink::storageLocation(), mResourceContext.instanceId() + ".synchronizerqueue", Sink::Storage::DataStore::ReadWrite).removeFromDisk();
Sink::Storage::DataStore(Sink::storageLocation(), mResourceContext.instanceId() + ".changereplay", Sink::Storage::DataStore::ReadWrite).removeFromDisk();
Sink::Storage::DataStore(Sink::storageLocation(), mResourceContext.instanceId() + ".synchronization", Sink::Storage::DataStore::ReadWrite).removeFromDisk();
}
auto store = Sink::Storage::DataStore(Sink::storageLocation(), mResourceContext.instanceId(), Sink::Storage::DataStore::ReadWrite);
auto t = store.createTransaction(Storage::DataStore::ReadWrite);
Storage::DataStore::setDatabaseVersion(t, Sink::latestDatabaseVersion());
SinkLog() << "Finished database upgrade to " << Sink::latestDatabaseVersion();
return true;
}
return false;
}
void GenericResource::setupPreprocessors(const QByteArray &type, const QVector<Sink::Preprocessor *> &preprocessors)
{
mPipeline->setPreprocessors(type, preprocessors);
}
void GenericResource::setupSynchronizer(const QSharedPointer<Synchronizer> &synchronizer)
{
mSynchronizer = synchronizer;
mProcessor->setSynchronizer(synchronizer);
QObject::connect(mPipeline.data(), &Pipeline::revisionUpdated, mSynchronizer.data(), &ChangeReplay::revisionChanged, Qt::QueuedConnection);
QObject::connect(mSynchronizer.data(), &ChangeReplay::changesReplayed, this, &GenericResource::updateLowerBoundRevision);
QMetaObject::invokeMethod(mSynchronizer.data(), "revisionChanged", Qt::QueuedConnection);
}
void GenericResource::setupInspector(const QSharedPointer<Inspector> &inspector)
{
mInspector = inspector;
mProcessor->setInspector(inspector);
}
void GenericResource::removeFromDisk(const QByteArray &instanceIdentifier)
{
Sink::Storage::DataStore(Sink::storageLocation(), instanceIdentifier, Sink::Storage::DataStore::ReadWrite).removeFromDisk();
Sink::Storage::DataStore(Sink::storageLocation(), instanceIdentifier + ".userqueue", Sink::Storage::DataStore::ReadWrite).removeFromDisk();
Sink::Storage::DataStore(Sink::storageLocation(), instanceIdentifier + ".synchronizerqueue", Sink::Storage::DataStore::ReadWrite).removeFromDisk();
Sink::Storage::DataStore(Sink::storageLocation(), instanceIdentifier + ".changereplay", Sink::Storage::DataStore::ReadWrite).removeFromDisk();
Sink::Storage::DataStore(Sink::storageLocation(), instanceIdentifier + ".synchronization", Sink::Storage::DataStore::ReadWrite).removeFromDisk();
}
qint64 GenericResource::diskUsage(const QByteArray &instanceIdentifier)
{
auto size = Sink::Storage::DataStore(Sink::storageLocation(), instanceIdentifier, Sink::Storage::DataStore::ReadOnly).diskUsage();
size += Sink::Storage::DataStore(Sink::storageLocation(), instanceIdentifier + ".userqueue", Sink::Storage::DataStore::ReadOnly).diskUsage();
size += Sink::Storage::DataStore(Sink::storageLocation(), instanceIdentifier + ".synchronizerqueue", Sink::Storage::DataStore::ReadOnly).diskUsage();
size += Sink::Storage::DataStore(Sink::storageLocation(), instanceIdentifier + ".changereplay", Sink::Storage::DataStore::ReadOnly).diskUsage();
size += Sink::Storage::DataStore(Sink::storageLocation(), instanceIdentifier + ".synchronization", Sink::Storage::DataStore::ReadOnly).diskUsage();
return size;
}
void GenericResource::onProcessorError(int errorCode, const QString &errorMessage)
{
SinkWarning() << "Received error from Processor: " << errorCode << errorMessage;
mError = errorCode;
}
int GenericResource::error() const
{
return mError;
}
void GenericResource::processCommand(int commandId, const QByteArray &data)
{
mProcessor->processCommand(commandId, data);
}
KAsync::Job<void> GenericResource::synchronizeWithSource(const Sink::QueryBase &query)
{
mSynchronizer->synchronize(query);
return KAsync::null<void>();
}
KAsync::Job<void> GenericResource::processAllMessages()
{
return mProcessor->processAllMessages();
}
void GenericResource::updateLowerBoundRevision()
{
mProcessor->setOldestUsedRevision(qMin(mClientLowerBoundRevision, mSynchronizer->getLastReplayedRevision()));
}
void GenericResource::setLowerBoundRevision(qint64 revision)
{
mClientLowerBoundRevision = revision;
updateLowerBoundRevision();
}
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