wpi::log::ProtobufLogEntry< T > Class Template Reference

Log protobuf serializable objects. More...

#include <wpi/DataLog.h>

Inheritance diagram for wpi::log::ProtobufLogEntry< T >:

Public Member Functions
	ProtobufLogEntry ()=default
	ProtobufLogEntry (DataLog &log, std::string_view name, int64_t timestamp=0)
	ProtobufLogEntry (DataLog &log, std::string_view name, std::string_view metadata, int64_t timestamp=0)
void	Append (const T &data, int64_t timestamp=0)
	Appends a record to the log.
void	Update (const T &data, int64_t timestamp=0)
	Updates the last value and appends a record to the log if it has changed.
bool	HasLastValue () const
	Gets whether there is a last value.
std::optional< T >	GetLastValue () const
	Gets the last value.
Public Member Functions inherited from wpi::log::DataLogEntry
	DataLogEntry (const DataLogEntry &)=delete
DataLogEntry &	operator= (const DataLogEntry &)=delete
	DataLogEntry (DataLogEntry &&rhs)
DataLogEntry &	operator= (DataLogEntry &&rhs)
	operator bool () const
void	SetMetadata (std::string_view metadata, int64_t timestamp=0)
	Updates the metadata for the entry.
void	Finish (int64_t timestamp=0)
	Finishes the entry.

Additional Inherited Members
Protected Member Functions inherited from wpi::log::DataLogEntry
	DataLogEntry ()=default
	DataLogEntry (DataLog &log, std::string_view name, std::string_view type, std::string_view metadata={}, int64_t timestamp=0)
Protected Attributes inherited from wpi::log::DataLogEntry
DataLog *	m_log = nullptr
int	m_entry = 0

Detailed Description

template<ProtobufSerializable T>
class wpi::log::ProtobufLogEntry< T >

Log protobuf serializable objects.

Constructor & Destructor Documentation

ProtobufLogEntry() [1/3]

template<ProtobufSerializable T>

wpi::log::ProtobufLogEntry< T >::ProtobufLogEntry ( )

default

ProtobufLogEntry() [2/3]

template<ProtobufSerializable T>

wpi::log::ProtobufLogEntry< T >::ProtobufLogEntry ( DataLog & log, std::string_view name, int64_t timestamp = 0 )

inline

ProtobufLogEntry() [3/3]

template<ProtobufSerializable T>

wpi::log::ProtobufLogEntry< T >::ProtobufLogEntry ( DataLog & log, std::string_view name, std::string_view metadata, int64_t timestamp = 0 )

inline

Member Function Documentation

Append()

template<ProtobufSerializable T>

void wpi::log::ProtobufLogEntry< T >::Append ( const T & data, int64_t timestamp = 0 )

inline

Appends a record to the log.

Parameters

data	Data to record
timestamp	Time stamp (may be 0 to indicate now)

GetLastValue()

template<ProtobufSerializable T>

std::optional< T > wpi::log::ProtobufLogEntry< T >::GetLastValue ( ) const

inline

Gets the last value.

Note

The last value is local to this class instance and updated only with Update(), not Append().

Returns

Last value (empty if no last value)

HasLastValue()

template<ProtobufSerializable T>

bool wpi::log::ProtobufLogEntry< T >::HasLastValue ( ) const

inline

Gets whether there is a last value.

Note

The last value is local to this class instance and updated only with Update(), not Append().

Returns

True if last value exists, false otherwise.

Update()

template<ProtobufSerializable T>

void wpi::log::ProtobufLogEntry< T >::Update ( const T & data, int64_t timestamp = 0 )

inline

Updates the last value and appends a record to the log if it has changed.

Note

The last value is local to this class instance; using Update() with two instances pointing to the same underlying log entry name will likely result in unexpected results.

Parameters

data	Data to record
timestamp	Time stamp (may be 0 to indicate now)

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The documentation for this class was generated from the following file:

• wpi/DataLog.h