Hypertable::MetaLog Namespace Reference

MetaLog framework. More...

Namespaces
	EntityType
	MetaLog entity type constants

Classes
class	Definition
	Defines the set of valid MetaLog entities for a server. More...
class	DefinitionMaster
class	DefinitionRangeServer
class	Entity
	Base class for MetaLog entities. More...
class	EntityHeader
	Entity header. More...
class	EntityRecover
	Recover entity used for sanity checking. More...
class	EntityTask
class	EntityTaskAcknowledgeRelinquish
class	Header
	Metalog file header. More...
class	Reader
	Reads a MetaLog. More...
class	Writer
	Writes a MetaLog. More...

Typedefs
typedef std::shared_ptr < Definition >	DefinitionPtr
	Smart pointer to Definition. More...
typedef std::shared_ptr< Entity >	EntityPtr
	Smart pointer to Entity. More...
typedef std::shared_ptr< Reader >	ReaderPtr
	Smart pointer to Reader. More...
typedef std::shared_ptr< Writer >	WriterPtr
	Smart pointer to Writer. More...
typedef std::shared_ptr < EntityTask >	EntityTaskPtr

Functions
void	scan_log_directory (FilesystemPtr &fs, const std::string &path, std::deque< int32_t > &file_ids)
	Scans MetaLog directory for numeric file names. More...
std::ostream &	operator<< (std::ostream &os, Entity &entity)
	ostream shift function for Entity objects. More...

Detailed Description

MetaLog framework.

Contains a set of classes that define the MetaLog subsystem.

Typedef Documentation

typedef std::shared_ptr<EntityTask> Hypertable::MetaLog::EntityTaskPtr

Definition at line 42 of file MetaLogEntityTask.h.

Function Documentation

void Hypertable::MetaLog::scan_log_directory	(	FilesystemPtr &	fs,
		const std::string &	path,
		std::deque< int32_t > &	file_ids
	)

Scans MetaLog directory for numeric file names.

A MetaLog consists of a directory containing a set of numerically named files, each file containing the state and state transitions of a start-to-finish run of a server. This function returns the set of numeric file names found within the MetaLog directory as well as the file number that can be used to hold the state of the next run of the server.

Parameters

fs	Smart pointer to Filesystem object
path	Pathname of MetaLog directory
file_ids	Deque to hold discovered numeric file names

Definition at line 54 of file MetaLog.cc.