pollymc/api/logic/net/MetaCacheSink.cpp
Petr Mrázek a1abbd9e05 NOISSUE refactor *Download into more, smaller pieces
* Download is now Download.
* Download uses Sink subclasses to process various events.
* Validators can be used to further customize the Sink behaviour.
2016-06-05 23:55:39 +02:00

60 lines
1.5 KiB
C++

#include "MetaCacheSink.h"
#include <QFile>
#include <QFileInfo>
#include "Env.h"
#include "FileSystem.h"
namespace Net {
MetaCacheSink::MetaCacheSink(MetaEntryPtr entry, ChecksumValidator * md5sum)
:Net::FileSink(entry->getFullPath()), m_entry(entry), m_md5Node(md5sum)
{
addValidator(md5sum);
};
MetaCacheSink::~MetaCacheSink()
{
// nil
};
JobStatus MetaCacheSink::initCache(QNetworkRequest& request)
{
if (!m_entry->isStale())
{
return Job_Finished;
}
// check if file exists, if it does, use its information for the request
QFile current(m_filename);
if(current.exists() && current.size() != 0)
{
if (m_entry->getRemoteChangedTimestamp().size())
{
request.setRawHeader(QString("If-Modified-Since").toLatin1(), m_entry->getRemoteChangedTimestamp().toLatin1());
}
if (m_entry->getETag().size())
{
request.setRawHeader(QString("If-None-Match").toLatin1(), m_entry->getETag().toLatin1());
}
}
return Job_InProgress;
}
JobStatus MetaCacheSink::finalizeCache(QNetworkReply & reply)
{
QFileInfo output_file_info(m_filename);
if(wroteAnyData)
{
m_entry->setMD5Sum(m_md5Node->hash().toHex().constData());
}
m_entry->setETag(reply.rawHeader("ETag").constData());
if (reply.hasRawHeader("Last-Modified"))
{
m_entry->setRemoteChangedTimestamp(reply.rawHeader("Last-Modified").constData());
}
m_entry->setLocalChangedTimestamp(output_file_info.lastModified().toUTC().toMSecsSinceEpoch());
m_entry->setStale(false);
ENV.metacache()->updateEntry(m_entry);
return Job_Finished;
}
}