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/*
* Copyright (C) 2014 Aaron Seigo <aseigo@kde.org>
*
* 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 "resourcefactory.h"
#include "facade.h"
#include "entitybuffer.h"
#include "pipeline.h"
#include "dummycalendar_generated.h"
#include "metadata_generated.h"
#include "queuedcommand_generated.h"
#include "createentity_generated.h"
#include "domainadaptor.h"
#include "commands.h"
#include "clientapi.h"
#include "index.h"
#include "log.h"
#include <QUuid>
#include <assert.h>
/*
* Figure out how to implement various classes of processors:
* * read-only (index and such) => extractor function, probably using domain adaptor
* * filter => provide means to move entity elsewhere, and also reflect change in source (I guess?)
* * flag extractors? => like read-only? Or write to local portion of buffer?
* ** $ISSPAM should become part of domain object and is written to the local part of the mail.
* ** => value could be calculated by the server directly
*/
class SimpleProcessor : public Akonadi2::Preprocessor
{
public:
SimpleProcessor(const QString &id, const std::function<void(const Akonadi2::PipelineState &state, const Akonadi2::Entity &e)> &f)
: Akonadi2::Preprocessor(),
mFunction(f),
mId(id)
{
}
void process(const Akonadi2::PipelineState &state, const Akonadi2::Entity &e) Q_DECL_OVERRIDE
{
mFunction(state, e);
processingCompleted(state);
}
QString id() const
{
return mId;
}
protected:
std::function<void(const Akonadi2::PipelineState &state, const Akonadi2::Entity &e)> mFunction;
QString mId;
};
static std::string createEvent()
{
static const size_t attachmentSize = 1024*2; // 2KB
static uint8_t rawData[attachmentSize];
static flatbuffers::FlatBufferBuilder fbb;
fbb.Clear();
{
uint8_t *rawDataPtr = Q_NULLPTR;
auto summary = fbb.CreateString("summary");
auto data = fbb.CreateUninitializedVector<uint8_t>(attachmentSize, &rawDataPtr);
DummyCalendar::DummyEventBuilder eventBuilder(fbb);
eventBuilder.add_summary(summary);
eventBuilder.add_attachment(data);
auto eventLocation = eventBuilder.Finish();
DummyCalendar::FinishDummyEventBuffer(fbb, eventLocation);
memcpy((void*)rawDataPtr, rawData, attachmentSize);
}
return std::string(reinterpret_cast<const char *>(fbb.GetBufferPointer()), fbb.GetSize());
}
QMap<QString, QString> populate()
{
QMap<QString, QString> content;
for (int i = 0; i < 2; i++) {
auto event = createEvent();
content.insert(QString("key%1").arg(i), QString::fromStdString(event));
}
return content;
}
static QMap<QString, QString> s_dataSource = populate();
//FIXME We need to pass the resource-instance name to generic resource, not the plugin name
DummyResource::DummyResource()
: Akonadi2::GenericResource(PLUGIN_NAME)
{
}
void DummyResource::configurePipeline(Akonadi2::Pipeline *pipeline)
{
auto eventFactory = QSharedPointer<DummyEventAdaptorFactory>::create();
//FIXME we should setup for each resource entity type, not for each domain type
//i.e. If a resource stores tags as part of each message it needs to update the tag index
//TODO setup preprocessors for each resource entity type and pipeline type allowing full customization
//Eventually the order should be self configuring, for now it's hardcoded.
auto eventIndexer = new SimpleProcessor("summaryprocessor", [eventFactory](const Akonadi2::PipelineState &state, const Akonadi2::Entity &entity) {
auto adaptor = eventFactory->createAdaptor(entity);
// Log() << "Summary preprocessor: " << adaptor->getProperty("summary").toString();
});
auto uidIndexer = new SimpleProcessor("uidIndexer", [eventFactory](const Akonadi2::PipelineState &state, const Akonadi2::Entity &entity) {
static Index uidIndex(QStandardPaths::writableLocation(QStandardPaths::GenericDataLocation) + "/akonadi2/storage", "org.kde.dummy.index.uid", Akonadi2::Storage::ReadWrite);
//TODO: Benchmark if this is performance wise acceptable, or if we have to access the buffer directly
auto adaptor = eventFactory->createAdaptor(entity);
const auto uid = adaptor->getProperty("uid");
if (uid.isValid()) {
uidIndex.add(uid.toByteArray(), state.key());
}
});
//event is the entitytype and not the domain type
pipeline->setPreprocessors("event", Akonadi2::Pipeline::NewPipeline, QVector<Akonadi2::Preprocessor*>() << eventIndexer << uidIndexer);
GenericResource::configurePipeline(pipeline);
}
void findByRemoteId(QSharedPointer<Akonadi2::Storage> storage, const QString &rid, std::function<void(void *keyValue, int keySize, void *dataValue, int dataSize)> callback)
{
//TODO lookup in rid index instead of doing a full scan
const std::string ridString = rid.toStdString();
storage->scan("", [&](void *keyValue, int keySize, void *dataValue, int dataSize) -> bool {
if (Akonadi2::Storage::isInternalKey(keyValue, keySize)) {
return true;
}
Akonadi2::EntityBuffer::extractResourceBuffer(dataValue, dataSize, [&](const uint8_t *buffer, size_t size) {
flatbuffers::Verifier verifier(buffer, size);
if (DummyCalendar::VerifyDummyEventBuffer(verifier)) {
DummyCalendar::DummyEvent const *resourceBuffer = DummyCalendar::GetDummyEvent(buffer);
if (resourceBuffer && resourceBuffer->remoteId()) {
if (std::string(resourceBuffer->remoteId()->c_str(), resourceBuffer->remoteId()->size()) == ridString) {
callback(keyValue, keySize, dataValue, dataSize);
}
}
}
});
return true;
});
}
KAsync::Job<void> DummyResource::synchronizeWithSource(Akonadi2::Pipeline *pipeline)
{
return KAsync::start<void>([this, pipeline](KAsync::Future<void> &f) {
//TODO use a read-only transaction during the complete sync to sync against a defined revision
auto storage = QSharedPointer<Akonadi2::Storage>::create(Akonadi2::Store::storageLocation(), "org.kde.dummy");
for (auto it = s_dataSource.constBegin(); it != s_dataSource.constEnd(); it++) {
bool isNew = true;
if (storage->exists()) {
findByRemoteId(storage, it.key(), [&](void *keyValue, int keySize, void *dataValue, int dataSize) {
isNew = false;
});
}
if (isNew) {
m_fbb.Clear();
const QByteArray data = it.value().toUtf8();
auto eventBuffer = DummyCalendar::GetDummyEvent(data.data());
//Map the source format to the buffer format (which happens to be an exact copy here)
auto summary = m_fbb.CreateString(eventBuffer->summary()->c_str());
auto rid = m_fbb.CreateString(it.key().toStdString().c_str());
auto description = m_fbb.CreateString(it.key().toStdString().c_str());
static uint8_t rawData[100];
auto attachment = Akonadi2::EntityBuffer::appendAsVector(m_fbb, rawData, 100);
auto builder = DummyCalendar::DummyEventBuilder(m_fbb);
builder.add_summary(summary);
builder.add_remoteId(rid);
builder.add_description(description);
builder.add_attachment(attachment);
auto buffer = builder.Finish();
DummyCalendar::FinishDummyEventBuffer(m_fbb, buffer);
flatbuffers::FlatBufferBuilder entityFbb;
Akonadi2::EntityBuffer::assembleEntityBuffer(entityFbb, 0, 0, m_fbb.GetBufferPointer(), m_fbb.GetSize(), 0, 0);
flatbuffers::FlatBufferBuilder fbb;
//This is the resource type and not the domain type
auto type = fbb.CreateString("event");
auto delta = Akonadi2::EntityBuffer::appendAsVector(fbb, entityFbb.GetBufferPointer(), entityFbb.GetSize());
auto location = Akonadi2::Commands::CreateCreateEntity(fbb, type, delta);
Akonadi2::Commands::FinishCreateEntityBuffer(fbb, location);
enqueueCommand(mSynchronizerQueue, Akonadi2::Commands::CreateEntityCommand, QByteArray::fromRawData(reinterpret_cast<char const *>(fbb.GetBufferPointer()), fbb.GetSize()));
} else { //modification
//TODO diff and create modification if necessary
}
}
//TODO find items to remove
f.setFinished();
});
}
DummyResourceFactory::DummyResourceFactory(QObject *parent)
: Akonadi2::ResourceFactory(parent)
{
}
Akonadi2::Resource *DummyResourceFactory::createResource()
{
return new DummyResource();
}
void DummyResourceFactory::registerFacades(Akonadi2::FacadeFactory &factory)
{
factory.registerFacade<Akonadi2::ApplicationDomain::Event, DummyResourceFacade>(PLUGIN_NAME);
}
#include "resourcefactory.moc"
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