blob: d48b34677fd99f125a1b26870aa247e17ebc2b67 [file] [log] [blame]
#pragma once
#include "additional_data.hpp"
#include "data_interface.hpp"
#include "private_header.hpp"
#include "registry.hpp"
#include "src.hpp"
#include "user_data.hpp"
#include "user_data_formats.hpp"
#include "user_header.hpp"
#include <memory>
#include <vector>
namespace openpower
{
namespace pels
{
/**
* @brief Contains information about an FFDC file.
*/
struct PelFFDCfile
{
UserDataFormat format;
uint8_t subType;
uint8_t version;
int fd;
};
using PelFFDC = std::vector<PelFFDCfile>;
/** @class PEL
*
* @brief This class represents a specific event log format referred to as a
* Platform Event Log.
*
* Every field in a PEL are in structures call sections, of which there are
* several types. Some sections are required, and some are optional. In some
* cases there may be more than one instance of a section type.
*
* The only two required sections for every type of PEL are the Private Header
* section and User Header section, which must be in the first and second
* positions, respectively.
*
* Every section starts with an 8 byte section header, which has the section
* size and type, among other things.
*
* This class represents all sections with objects.
*
* The class can be constructed:
* - From a full formed flattened PEL.
* - From scratch based on an OpenBMC event and its corresponding PEL message
* registry entry.
*
* The data() method allows one to retrieve the PEL as a vector<uint8_t>. This
* is the format in which it is stored and transmitted.
*/
class PEL
{
public:
PEL() = delete;
~PEL() = default;
PEL(const PEL&) = delete;
PEL& operator=(const PEL&) = delete;
PEL(PEL&&) = delete;
PEL& operator=(PEL&&) = delete;
/**
* @brief Constructor
*
* Build a PEL from raw data.
*
* Note: Neither this nor the following constructor can take a const vector&
* because the Stream class that is used to read from the vector cannot take
* a const. The alternative is to make a copy of the data, but as PELs can
* be up to 16KB that is undesireable.
*
* @param[in] data - The PEL data
*/
PEL(std::vector<uint8_t>& data);
/**
* @brief Constructor
*
* Build a PEL from the raw data.
*
* @param[in] data - the PEL data
* @param[in] obmcLogID - the corresponding OpenBMC event log ID
*/
PEL(std::vector<uint8_t>& data, uint32_t obmcLogID);
/**
* @brief Constructor
*
* Creates a PEL from an OpenBMC event log and its message
* registry entry.
*
* @param[in] entry - The message registry entry for this error
* @param[in] obmcLogID - ID of corresponding OpenBMC event log
* @param[in] timestamp - Timestamp from the event log
* @param[in] severity - Severity from the event log
* @param[in] additionalData - The AdditionalData contents
* @param[in] ffdcFiles - FFCD files that go into UserData sections
* @param[in] dataIface - The data interface object
*/
PEL(const openpower::pels::message::Entry& entry, uint32_t obmcLogID,
uint64_t timestamp, phosphor::logging::Entry::Level severity,
const AdditionalData& additionalData, const PelFFDC& ffdcFiles,
const DataInterfaceBase& dataIface);
/**
* @brief Convenience function to return the log ID field from the
* Private Header section.
*
* @return uint32_t - the ID
*/
uint32_t id() const
{
return _ph->id();
}
/**
* @brief Convenience function to return the PLID field from the
* Private Header section.
*
* @return uint32_t - the PLID
*/
uint32_t plid() const
{
return _ph->plid();
}
/**
* @brief Convenience function to return the OpenBMC event log ID field
* from the Private Header section.
*
* @return uint32_t - the OpenBMC event log ID
*/
uint32_t obmcLogID() const
{
return _ph->obmcLogID();
}
/**
* @brief Convenience function to return the commit time field from
* the Private Header section.
*
* @return BCDTime - the timestamp
*/
BCDTime commitTime() const
{
return _ph->commitTimestamp();
}
/**
* @brief Convenience function to return the create time field from
* the Private Header section.
*
* @return BCDTime - the timestamp
*/
BCDTime createTime() const
{
return _ph->createTimestamp();
}
/**
* @brief Gives access to the Private Header section class
*
* @return const PrivateHeader& - the private header
*/
const PrivateHeader& privateHeader() const
{
return *_ph;
}
/**
* @brief Gives access to the User Header section class
*
* @return const UserHeader& - the user header
*/
const UserHeader& userHeader() const
{
return *_uh;
}
/**
* @brief Gives access to the primary SRC's section class
*
* This is technically an optional section, so the return
* value is an std::optional<SRC*>.
*
* @return std::optional<SRC*> - the SRC section object
*/
std::optional<SRC*> primarySRC() const;
/**
* @brief Returns the optional sections, which is everything but
* the Private and User Headers.
*
* @return const std::vector<std::unique_ptr<Section>>&
*/
const std::vector<std::unique_ptr<Section>>& optionalSections() const
{
return _optionalSections;
}
/**
* @brief Returns the PEL data.
*
* @return std::vector<uint8_t> - the raw PEL data
*/
std::vector<uint8_t> data() const;
/**
* @brief Returns the size of the PEL
*
* @return size_t The PEL size in bytes
*/
size_t size() const;
/**
* @brief Says if the PEL is valid (the sections are all valid)
*
* @return bool - if the PEL is valid
*/
bool valid() const;
/**
* @brief Sets the commit timestamp to the current time
*/
void setCommitTime();
/**
* @brief Sets the error log ID field to a unique ID.
*/
void assignID();
/**
* @brief Output a PEL in JSON.
* @param[in] registry - Registry object reference
* @param[in] plugins - Vector of strings of plugins found in filesystem
*/
void toJSON(message::Registry& registry,
const std::vector<std::string>& plugins) const;
/**
* @brief Sets the host transmission state in the User Header
*
* @param[in] state - The state value
*/
void setHostTransmissionState(TransmissionState state)
{
_uh->setHostTransmissionState(static_cast<uint8_t>(state));
}
/**
* @brief Returns the host transmission state
*
* @return HostTransmissionState - The state
*/
TransmissionState hostTransmissionState() const
{
return static_cast<TransmissionState>(_uh->hostTransmissionState());
}
/**
* @brief Sets the HMC transmission state in the User Header
*
* @param[in] state - The state value
*/
void setHMCTransmissionState(TransmissionState state)
{
_uh->setHMCTransmissionState(static_cast<uint8_t>(state));
}
/**
* @brief Returns the HMC transmission state
*
* @return HMCTransmissionState - The state
*/
TransmissionState hmcTransmissionState() const
{
return static_cast<TransmissionState>(_uh->hmcTransmissionState());
}
/**
* @brief Returns true if any callout is present in the primary SRC
*
* @return true if callout present, false otherwise
*/
bool isCalloutPresent() const;
private:
/**
* @brief Builds the section objects from a PEL data buffer
*
* Note: The data parameter cannot be const for the same reasons
* as listed in the constructor.
*
* @param[in] data - The PEL data
* @param[in] obmcLogID - The OpenBMC event log ID to use for that
* field in the Private Header.
*/
void populateFromRawData(std::vector<uint8_t>& data, uint32_t obmcLogID);
/**
* @brief Flattens the PEL objects into the buffer
*
* @param[out] pelBuffer - What the data will be written to
*/
void flatten(std::vector<uint8_t>& pelBuffer) const;
/**
* @brief Check that the PEL fields that need to be in agreement
* with each other are, and fix them up if necessary.
*/
void checkRulesAndFix();
/**
* @brief Returns a map of the section IDs that appear more than once
* in the PEL. The data value for each entry will be set to 0.
*
* @return std::map<uint16_t, size_t>
*/
std::map<uint16_t, size_t> getPluralSections() const;
/**
* @brief Adds the UserData section to this PEL object,
* shrinking it if necessary
*
* @param[in] userData - The section to add
*
* @return bool - If the section was added or not.
*/
bool addUserDataSection(std::unique_ptr<UserData> userData);
/**
* @brief helper function for printing PELs.
* @param[in] Section& - section object reference
* @param[in] std::string - PEL string
* @param[in|out] pluralSections - Map used to track sections counts for
* when there is more than 1.
* @param[in] registry - Registry object reference
* @param[in] plugins - Vector of strings of plugins found in filesystem
* @param[in] creatorID - Creator Subsystem ID (only for UserData section)
*/
void printSectionInJSON(const Section& section, std::string& buf,
std::map<uint16_t, size_t>& pluralSections,
message::Registry& registry,
const std::vector<std::string>& plugins,
uint8_t creatorID = 0) const;
/**
* @brief Returns any callout JSON found in the FFDC files.
*
* Looks for an FFDC file that is JSON format and has the
* sub-type value set to 0xCA and returns its data as a JSON object.
*
* @param[in] ffdcFiles - FFCD files that go into UserData sections
*
* @return json - The callout JSON, or an empty object if not found
*/
nlohmann::json getCalloutJSON(const PelFFDC& ffdcFiles);
/**
* @brief The PEL Private Header section
*/
std::unique_ptr<PrivateHeader> _ph;
/**
* @brief The PEL User Header section
*/
std::unique_ptr<UserHeader> _uh;
/**
* @brief Holds all sections by the PH and UH.
*/
std::vector<std::unique_ptr<Section>> _optionalSections;
/**
* @brief The maximum size a PEL can be in bytes.
*/
static constexpr size_t _maxPELSize = 16384;
};
namespace util
{
/**
* @brief Creates a UserData section object that contains JSON.
*
* @param[in] json - The JSON contents
*
* @return std::unique_ptr<UserData> - The UserData object
*/
std::unique_ptr<UserData> makeJSONUserDataSection(const nlohmann::json& json);
/**
* @brief Create a UserData section containing the AdditionalData
* contents as a JSON string.
*
* @param[in] ad - The AdditionalData contents
*
* @return std::unique_ptr<UserData> - The section
*/
std::unique_ptr<UserData> makeADUserDataSection(const AdditionalData& ad);
/**
* @brief Create a UserData section containing various useful pieces
* of system information as a JSON string.
*
* @param[in] ad - The AdditionalData contents
* @param[in] dataIface - The data interface object
*
* @return std::unique_ptr<UserData> - The section
*/
std::unique_ptr<UserData>
makeSysInfoUserDataSection(const AdditionalData& ad,
const DataInterfaceBase& dataIface);
/**
* @brief Reads data from an opened file descriptor.
*
* @param[in] fd - The FD to read from
*
* @return std::vector<uint8_t> - The data read
*/
std::vector<uint8_t> readFD(int fd);
/**
* @brief Create a UserData section that contains the data in the file
* pointed to by the file descriptor passed in.
*
* @param[in] componentID - The component ID of the PEL creator
* @param[in] file - The FFDC file information
*/
std::unique_ptr<UserData> makeFFDCuserDataSection(uint16_t componentID,
const PelFFDCfile& file);
} // namespace util
} // namespace pels
} // namespace openpower