Persistence strategy that writes items (e.g. More...

#include <RobotAPI/libraries/armem/server/ltm/persistence/disk/DiskPersistence.h>

Inheritance diagram for DiskPersistence:

Public Member Functions
bool	containsContainer (const armarx::armem::MemoryID &id, std::string key) override
	Checks if the container is available for the current memory id. More...

bool	containsItem (const armarx::armem::MemoryID &id, std::string key) override
	Checks if current container contains the item defined by its key. More...

void	createPropertyDefinitions (PropertyDefinitionsPtr &defs, const std::string &prefix) override

	DiskPersistence ()

	DiskPersistence (const std::filesystem::path &memoryParentPath)

	DiskPersistence (const std::string &identifier, const std::string &exportName, const std::filesystem::path &memoryParentPath)

std::vector< std::string >	getContainerKeys (const armarx::armem::MemoryID &id) override
	Returns all containers for the current id. More...

std::vector< std::string >	getItemKeys (const armarx::armem::MemoryID &id) override
	Returns all items for the current id. More...

std::vector< unsigned char >	retrieveItem (const armarx::armem::MemoryID &id, std::string key) override
	Reads the data of the file with name 'key' at the current location. More...

void	setMinAvailableDiskSpace (const int minDiskSpace)

void	storeItem (const armarx::armem::MemoryID &id, std::string key, std::vector< unsigned char > &data) override
	Create a new file with name 'key' and stores the data inside it. More...

Public Member Functions inherited from MemoryPersistenceStrategy
virtual void	disable ()

virtual void	enable ()

std::string	getExportName ()

std::string	getIdentifier ()

virtual bool	isEnabled ()

	MemoryPersistenceStrategy ()

	MemoryPersistenceStrategy (const std::string &identifier, const std::string &exportName, bool enabled=true)

std::vector< unsigned char >	retrieveItem (const armarx::armem::MemoryID &memoryId, ItemIdentifier itemIdentifier)

virtual ItemResult	retrieveItemWithOrigin (const armarx::armem::MemoryID &id, std::string &key)
	Retrieves the actual data but also appends the origin which is in this case the strategy identifier. More...

virtual void	setExportName (const std::string &exportName)

void	setIdentifier (const std::string &identifier)

void	storeItem (const armarx::armem::MemoryID &memoryId, ItemIdentifier itemIdentifer, std::vector< unsigned char > &data)

virtual	~MemoryPersistenceStrategy ()=default

Public Attributes
int	minDiskSpace = 50

Additional Inherited Members
Static Public Attributes inherited from MemoryPersistenceStrategy
static const constexpr char *	DATA_FILENAME = "data.aron"

static const int	DEPTH_TO_DATA_FILES = 7

static const constexpr char *	MEMORY_EXPORT_SUFFIX = "_"

static const constexpr char *	METADATA_FILENAME = "metadata.aron"

static const constexpr char *	TYPE_FILENAME = "type.aron"

Protected Attributes inherited from MemoryPersistenceStrategy
bool	enabled_ = true
	If false, the strategy is not writing or reading anything. More...

std::string	exportName_
	Name of the specific memory export where our items should be stored. More...

std::string	identifier_
	Name of the strategy. More...

Detailed Description

Persistence strategy that writes items (e.g.

json files) to a specific container (a directory) Use it to write the data of a WM to disk.

Where are the items written (=:location)? /memoryParentPath/exportName/path(id)/

How is the file of an item named? -> Just they key (e.g. filename = key = "data.aron.json") If you might want a more sophisticated solution fell free to implement your custom ItemIdentifier today!

Definition at line 47 of file DiskPersistence.h.

Constructor & Destructor Documentation

◆ DiskPersistence() [1/3]

DiskPersistence ( )

inline

Definition at line 50 of file DiskPersistence.h.

◆ DiskPersistence() [2/3]

DiskPersistence ( const std::filesystem::path & memoryParentPath )

inline

Definition at line 54 of file DiskPersistence.h.

◆ DiskPersistence() [3/3]

DiskPersistence	(	const std::string &	identifier,
		const std::string &	exportName,
		const std::filesystem::path &	memoryParentPath
	)

inline

Parameters

identifier basically a unique name for the strategy (important if you use different strategies

See also: RedundantPersistenceStrategy)

Parameters

exportName	identifier for the exported memory. A new directory with name is created beneath the memoryParentPath. Everything is stored inside it.
memoryParentPath	path where the memory should be exported to

Definition at line 64 of file DiskPersistence.h.

Member Function Documentation

◆ containsContainer()

bool containsContainer	(	const armarx::armem::MemoryID &	id,
		std::string	key
	)

overridevirtual

Checks if the container is available for the current memory id.

Returns: true if the current location contains the directory with name 'key'

Implements MemoryPersistenceStrategy.

Definition at line 116 of file DiskPersistence.cpp.

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◆ containsItem()

bool containsItem	(	const armarx::armem::MemoryID &	id,
		std::string	key
	)

overridevirtual

Checks if current container contains the item defined by its key.

Returns: true if the current location contains a file with the name 'key'

Implements MemoryPersistenceStrategy.

Definition at line 132 of file DiskPersistence.cpp.

◆ createPropertyDefinitions()

void createPropertyDefinitions	(	PropertyDefinitionsPtr &	defs,
		const std::string &	prefix
	)

inlineoverridevirtual

Implements MemoryPersistenceStrategy.

Definition at line 110 of file DiskPersistence.h.

◆ getContainerKeys()

std::vector< std::string > getContainerKeys ( const armarx::armem::MemoryID & id )

overridevirtual

Returns all containers for the current id.

Returns: containers <=> directories at current location (=/memoryParentPath/exportName/path(id)/)

Implements MemoryPersistenceStrategy.

Definition at line 9 of file DiskPersistence.cpp.

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◆ getItemKeys()

std::vector< std::string > getItemKeys ( const armarx::armem::MemoryID & id )

overridevirtual

Returns all items for the current id.

Returns: items <=> files at the current location (=/memoryParentPath/exportName/path(id)/)

Implements MemoryPersistenceStrategy.

Definition at line 92 of file DiskPersistence.cpp.

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◆ retrieveItem()

std::vector< unsigned char > retrieveItem	(	const armarx::armem::MemoryID &	id,
		std::string	key
	)

overridevirtual

Reads the data of the file with name 'key' at the current location.

Returns: data if a file was found, an empty vector if the file is empty or was not found

Implements MemoryPersistenceStrategy.

Definition at line 166 of file DiskPersistence.cpp.

◆ setMinAvailableDiskSpace()

void setMinAvailableDiskSpace ( const int minDiskSpace )

inline

Definition at line 116 of file DiskPersistence.h.

◆ storeItem()

void storeItem	(	const armarx::armem::MemoryID &	id,
		std::string	key,
		std::vector< unsigned char > &	data
	)

overridevirtual

Create a new file with name 'key' and stores the data inside it.

Implements MemoryPersistenceStrategy.

Definition at line 143 of file DiskPersistence.cpp.

Member Data Documentation

◆ minDiskSpace

int minDiskSpace = 50

Definition at line 128 of file DiskPersistence.h.

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

RobotAPI/libraries/armem/server/ltm/persistence/disk/DiskPersistence.h
RobotAPI/libraries/armem/server/ltm/persistence/disk/DiskPersistence.cpp

Public Member Functions

Public Attributes

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ DiskPersistence() [1/3]

◆ DiskPersistence() [2/3]

◆ DiskPersistence() [3/3]

Member Function Documentation

◆ containsContainer()

◆ containsItem()

◆ createPropertyDefinitions()

◆ getContainerKeys()

◆ getItemKeys()

◆ retrieveItem()

◆ setMinAvailableDiskSpace()

◆ storeItem()

Member Data Documentation

◆ minDiskSpace