blob: f90a6280255315f1924f7facf19eb2af832f3180 [file] [log] [blame]
/**
* Copyright © 2019 IBM Corporation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "repository.hpp"
#include <fstream>
#include <phosphor-logging/log.hpp>
#include <xyz/openbmc_project/Common/File/error.hpp>
namespace openpower
{
namespace pels
{
namespace fs = std::filesystem;
using namespace phosphor::logging;
namespace file_error = sdbusplus::xyz::openbmc_project::Common::File::Error;
Repository::Repository(const std::filesystem::path& basePath) :
_logPath(basePath / "logs")
{
if (!fs::exists(_logPath))
{
fs::create_directories(_logPath);
}
restore();
}
void Repository::restore()
{
for (auto& dirEntry : fs::directory_iterator(_logPath))
{
try
{
if (!fs::is_regular_file(dirEntry.path()))
{
continue;
}
std::ifstream file{dirEntry.path()};
std::vector<uint8_t> data{std::istreambuf_iterator<char>(file),
std::istreambuf_iterator<char>()};
file.close();
PEL pel{data};
if (pel.valid())
{
// If the host hasn't acked it, reset the host state so
// it will get sent up again.
if (pel.hostTransmissionState() == TransmissionState::sent)
{
pel.setHostTransmissionState(TransmissionState::newPEL);
try
{
write(pel, dirEntry.path());
}
catch (std::exception& e)
{
log<level::ERR>(
"Failed to save PEL after updating host state",
entry("PELID=0x%X", pel.id()));
}
}
PELAttributes attributes{
dirEntry.path(), pel.userHeader().actionFlags(),
pel.hostTransmissionState(), pel.hmcTransmissionState()};
using pelID = LogID::Pel;
using obmcID = LogID::Obmc;
_pelAttributes.emplace(
LogID(pelID(pel.id()), obmcID(pel.obmcLogID())),
attributes);
}
else
{
log<level::ERR>(
"Found invalid PEL file while restoring. Removing.",
entry("FILENAME=%s", dirEntry.path().c_str()));
fs::remove(dirEntry.path());
}
}
catch (std::exception& e)
{
log<level::ERR>("Hit exception while restoring PEL File",
entry("FILENAME=%s", dirEntry.path().c_str()),
entry("ERROR=%s", e.what()));
}
}
}
std::string Repository::getPELFilename(uint32_t pelID, const BCDTime& time)
{
char name[50];
sprintf(name, "%.2X%.2X%.2X%.2X%.2X%.2X%.2X%.2X_%.8X", time.yearMSB,
time.yearLSB, time.month, time.day, time.hour, time.minutes,
time.seconds, time.hundredths, pelID);
return std::string{name};
}
void Repository::add(std::unique_ptr<PEL>& pel)
{
pel->setHostTransmissionState(TransmissionState::newPEL);
pel->setHMCTransmissionState(TransmissionState::newPEL);
auto path = _logPath / getPELFilename(pel->id(), pel->commitTime());
write(*(pel.get()), path);
PELAttributes attributes{path, pel->userHeader().actionFlags(),
pel->hostTransmissionState(),
pel->hmcTransmissionState()};
using pelID = LogID::Pel;
using obmcID = LogID::Obmc;
_pelAttributes.emplace(LogID(pelID(pel->id()), obmcID(pel->obmcLogID())),
attributes);
processAddCallbacks(*pel);
}
void Repository::write(const PEL& pel, const fs::path& path)
{
std::ofstream file{path, std::ios::binary};
if (!file.good())
{
// If this fails, the filesystem is probably full so it isn't like
// we could successfully create yet another error log here.
auto e = errno;
fs::remove(path);
log<level::ERR>("Unable to open PEL file for writing",
entry("ERRNO=%d", e), entry("PATH=%s", path.c_str()));
throw file_error::Open();
}
auto data = pel.data();
file.write(reinterpret_cast<const char*>(data.data()), data.size());
if (file.fail())
{
// Same note as above about not being able to create an error log
// for this case even if we wanted.
auto e = errno;
file.close();
fs::remove(path);
log<level::ERR>("Unable to write PEL file", entry("ERRNO=%d", e),
entry("PATH=%s", path.c_str()));
throw file_error::Write();
}
}
void Repository::remove(const LogID& id)
{
auto pel = findPEL(id);
if (pel != _pelAttributes.end())
{
fs::remove(pel->second.path);
_pelAttributes.erase(pel);
processDeleteCallbacks(id.pelID.id);
}
}
std::optional<std::vector<uint8_t>> Repository::getPELData(const LogID& id)
{
auto pel = findPEL(id);
if (pel != _pelAttributes.end())
{
std::ifstream file{pel->second.path.c_str()};
if (!file.good())
{
auto e = errno;
log<level::ERR>("Unable to open PEL file", entry("ERRNO=%d", e),
entry("PATH=%s", pel->second.path.c_str()));
throw file_error::Open();
}
std::vector<uint8_t> data{std::istreambuf_iterator<char>(file),
std::istreambuf_iterator<char>()};
return data;
}
return std::nullopt;
}
void Repository::for_each(ForEachFunc func) const
{
for (const auto& [id, attributes] : _pelAttributes)
{
std::ifstream file{attributes.path};
if (!file.good())
{
auto e = errno;
log<level::ERR>("Repository::for_each: Unable to open PEL file",
entry("ERRNO=%d", e),
entry("PATH=%s", attributes.path.c_str()));
continue;
}
std::vector<uint8_t> data{std::istreambuf_iterator<char>(file),
std::istreambuf_iterator<char>()};
file.close();
PEL pel{data};
try
{
if (func(pel))
{
break;
}
}
catch (std::exception& e)
{
log<level::ERR>("Repository::for_each function exception",
entry("ERROR=%s", e.what()));
}
}
}
void Repository::processAddCallbacks(const PEL& pel) const
{
for (auto& [name, func] : _addSubscriptions)
{
try
{
func(pel);
}
catch (std::exception& e)
{
log<level::ERR>("PEL Repository add callback exception",
entry("NAME=%s", name.c_str()),
entry("ERROR=%s", e.what()));
}
}
}
void Repository::processDeleteCallbacks(uint32_t id) const
{
for (auto& [name, func] : _deleteSubscriptions)
{
try
{
func(id);
}
catch (std::exception& e)
{
log<level::ERR>("PEL Repository delete callback exception",
entry("NAME=%s", name.c_str()),
entry("ERROR=%s", e.what()));
}
}
}
std::optional<std::reference_wrapper<const Repository::PELAttributes>>
Repository::getPELAttributes(const LogID& id) const
{
auto pel = findPEL(id);
if (pel != _pelAttributes.end())
{
return pel->second;
}
return std::nullopt;
}
void Repository::setPELHostTransState(uint32_t pelID, TransmissionState state)
{
LogID id{LogID::Pel{pelID}};
auto attr = std::find_if(_pelAttributes.begin(), _pelAttributes.end(),
[&id](const auto& a) { return a.first == id; });
if ((attr != _pelAttributes.end()) && (attr->second.hostState != state))
{
PELUpdateFunc func = [state](PEL& pel) {
pel.setHostTransmissionState(state);
};
try
{
updatePEL(attr->second.path, func);
attr->second.hostState = state;
}
catch (std::exception& e)
{
log<level::ERR>("Unable to update PEL host transmission state",
entry("PATH=%s", attr->second.path.c_str()),
entry("ERROR=%s", e.what()));
}
}
}
void Repository::setPELHMCTransState(uint32_t pelID, TransmissionState state)
{
LogID id{LogID::Pel{pelID}};
auto attr = std::find_if(_pelAttributes.begin(), _pelAttributes.end(),
[&id](const auto& a) { return a.first == id; });
if ((attr != _pelAttributes.end()) && (attr->second.hmcState != state))
{
PELUpdateFunc func = [state](PEL& pel) {
pel.setHMCTransmissionState(state);
};
try
{
updatePEL(attr->second.path, func);
attr->second.hmcState = state;
}
catch (std::exception& e)
{
log<level::ERR>("Unable to update PEL HMC transmission state",
entry("PATH=%s", attr->second.path.c_str()),
entry("ERROR=%s", e.what()));
}
}
}
void Repository::updatePEL(const fs::path& path, PELUpdateFunc updateFunc)
{
std::ifstream file{path};
std::vector<uint8_t> data{std::istreambuf_iterator<char>(file),
std::istreambuf_iterator<char>()};
file.close();
PEL pel{data};
if (pel.valid())
{
updateFunc(pel);
write(pel, path);
}
else
{
throw std::runtime_error(
"Unable to read a valid PEL when trying to update it");
}
}
} // namespace pels
} // namespace openpower