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#include <cereal/types/string.hpp>
#include <cereal/types/vector.hpp>
#include <cereal/archives/binary.hpp>
#include <fstream>
#include "event_serialize.hpp"
#include <phosphor-logging/log.hpp>
#include "config.h"
// Register class version
// From cereal documentation;
// "This macro should be placed at global scope"
CEREAL_CLASS_VERSION(phosphor::events::Entry, CLASS_VERSION);
namespace phosphor
{
namespace events
{
using namespace phosphor::logging;
/** @brief Function required by Cereal to perform serialization.
* @tparam Archive - Cereal archive type (binary in our case).
* @param[in] archive - reference to Cereal archive.
* @param[in] event - const reference to event entry.
* @param[in] version - Class version that enables handling
* a serialized data across code levels
*/
template <class Archive>
void save(Archive& archive, const Entry& event, const std::uint32_t version)
{
archive(event.timestamp(), event.message(), event.additionalData());
}
/** @brief Function required by Cereal to perform deserialization.
* @tparam Archive - Cereal archive type (binary in our case).
* @param[in] archive - reference to Cereal archive.
* @param[in] event - reference to event entry.
* @param[in] version - Class version that enables handling
* a serialized data across code levels
*/
template <class Archive>
void load(Archive& archive, Entry& event, const std::uint32_t version)
{
using namespace sdbusplus::xyz::openbmc_project::Logging::server;
uint64_t timestamp{};
std::string message{};
std::vector<std::string> additionalData{};
archive(timestamp, message, additionalData);
event.timestamp(timestamp);
event.message(message);
event.additionalData(additionalData);
}
fs::path serialize(const Entry& event, const std::string& eventName)
{
fs::path dir(EVENTS_PERSIST_PATH);
auto path = dir / eventName;
fs::create_directories(path);
path /= std::to_string(event.timestamp());
std::ofstream os(path.string(), std::ios::binary);
cereal::BinaryOutputArchive oarchive(os);
oarchive(event);
return path;
}
bool deserialize(const fs::path& path, Entry& event)
{
try
{
if (fs::exists(path))
{
std::ifstream is(path.c_str(), std::ios::in | std::ios::binary);
cereal::BinaryInputArchive iarchive(is);
iarchive(event);
return true;
}
return false;
}
catch (cereal::Exception& e)
{
log<level::ERR>(e.what());
std::error_code ec;
fs::remove(path, ec);
return false;
}
catch (const fs::filesystem_error& e)
{
return false;
}
}
} // namespace events
} // namespace phosphor
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