Keyring operations A class to perform operations on keyring. More...

#include <operations.h>

Public Member Functions
	Keyring_operations (bool cache_data, Backend *backend)
	Constructor. More...

	~Keyring_operations ()=default

bool	insert (const meta::Metadata &metadata, Data_extension secret_data)
	Insert API to populate cache. More...

bool	get (const meta::Metadata &metadata, data::Data &data)
	Search API. More...

bool	get_data_extension (const meta::Metadata &metadata, Data_extension &data)
	Get Backend-specific data extension. More...

bool	store (const meta::Metadata &metadata, const data::Data &data)
	Store API. More...

bool	erase (const meta::Metadata &metadata)
	Remove API. More...

bool	generate (const meta::Metadata &metadata, const data::Type type, size_t length)
	Generate API. More...

bool	init_read_iterator (std::unique_ptr< iterator::Iterator< Data_extension > > &it, const meta::Metadata &metadata)
	Iterator creation for read. More...

bool	init_forward_iterator (std::unique_ptr< iterator::Iterator< Data_extension > > &it, bool cached)
	Iterator creation. More...

void	deinit_forward_iterator (std::unique_ptr< iterator::Iterator< Data_extension > > &it)
	Iterator destruction. More...

bool	is_valid (std::unique_ptr< iterator::Iterator< Data_extension > > &it)
	Check iterator validity. More...

bool	next (std::unique_ptr< iterator::Iterator< Data_extension > > &it)
	Move iterator forward. More...

bool	get_iterator_data (std::unique_ptr< iterator::Iterator< Data_extension > > &it, meta::Metadata &metadata, Data_extension &data)
	Get data from iterator. More...

bool	get_iterator_metadata (std::unique_ptr< iterator::Iterator< Data_extension > > &it, meta::Metadata &metadata, Data_extension &data)
	Get metadata from iterator. More...

size_t	maximum_data_length () const
	Maximum data length supported. More...

size_t	keyring_size ()
	Keyring size. More...

bool	valid ()
	Validity. More...

Private Member Functions
void	load_cache ()

Private Attributes
cache::Datacache< Data_extension >	cache_
	Metadata cache. More...

bool	cache_data_
	Flag to cache data. More...

std::unique_ptr< Backend >	backend_
	Keyring backend. More...

bool	valid_
	Validity. More...

Detailed Description

template<typename Backend, typename Data_extension = data::Data>
class keyring_common::operations::Keyring_operations< Backend, Data_extension >

Keyring operations A class to perform operations on keyring.

If cache is enabled, operations uses it. Otherwise, backend is used.

Assumptions:

Backend implements interface to keyring backend.
Backend is required to support same Data_extension as Keyring_operations

Please see "How to write a new keyring component" for details about Backend class.

Constructor & Destructor Documentation

◆ Keyring_operations()

template<typename Backend , typename Data_extension = data::Data>

keyring_common::operations::Keyring_operations< Backend, Data_extension >::Keyring_operations	(	bool	cache_data,
		Backend *	backend
	)

inlineexplicit

Constructor.

Parameters

[in]	cache_data	Whether to cache data or not
[in]	backend	Pointer to keyring backend

Populates the cache from backend

◆ ~Keyring_operations()

template<typename Backend , typename Data_extension = data::Data>

keyring_common::operations::Keyring_operations< Backend, Data_extension >::~Keyring_operations ( )

default

Member Function Documentation

◆ deinit_forward_iterator()

template<typename Backend , typename Data_extension = data::Data>

void keyring_common::operations::Keyring_operations< Backend, Data_extension >::deinit_forward_iterator ( std::unique_ptr< iterator::Iterator< Data_extension > > & it )

inline

Iterator destruction.

Parameters

[in,out] it Forward iterator to metadata

◆ erase()

template<typename Backend , typename Data_extension = data::Data>

bool keyring_common::operations::Keyring_operations< Backend, Data_extension >::erase ( const meta::Metadata & metadata )

inline

Remove API.

Parameters

[in] metadata Key to the data

Returns: status of remove operation

Return values

false	Success - data removed OR does not exist
true	Failure

◆ generate()

template<typename Backend , typename Data_extension = data::Data>

bool keyring_common::operations::Keyring_operations< Backend, Data_extension >::generate	(	const meta::Metadata &	metadata,
		const data::Type	type,
		size_t	length
	)

inline

Generate API.

Parameters

[in]	metadata	Key for the data
[in]	type	Type of data
[in]	length	Length of data to be generated

Returns: status of data generation

Return values

false	Success - data generated and stored in backend
true	Failure

◆ get()

template<typename Backend , typename Data_extension = data::Data>

bool keyring_common::operations::Keyring_operations< Backend, Data_extension >::get	(	const meta::Metadata &	metadata,
		data::Data &	data
	)

inline

Search API.

Parameters

[in]	metadata	Key to the data
[out]	data	Fetched data

Returns: status of search operation

Return values

false	Success - data contains required information
true	Failure - data is not valid

◆ get_data_extension()

template<typename Backend , typename Data_extension = data::Data>

bool keyring_common::operations::Keyring_operations< Backend, Data_extension >::get_data_extension	(	const meta::Metadata &	metadata,
		Data_extension &	data
	)

inline

Get Backend-specific data extension.

Parameters

[in]	metadata	Key to the data
[out]	data	Fetched data extension

Returns: status of search operation

Return values

false	Success - data contains required information
true	Failure - data is not valid

NOTE: get_data_extension NEVER returns data. It only returns Data extension information.

◆ get_iterator_data()

template<typename Backend , typename Data_extension = data::Data>

bool keyring_common::operations::Keyring_operations< Backend, Data_extension >::get_iterator_data	(	std::unique_ptr< iterator::Iterator< Data_extension > > &	it,
		meta::Metadata &	metadata,
		Data_extension &	data
	)

inline

Get data from iterator.

Parameters

[in]	it	Forward iterator to metadata
[out]	metadata	Metadata for given key
[out]	data	Data for given key (Including extension)

Returns: Status

Return values

false	Success
true	Failure

◆ get_iterator_metadata()

template<typename Backend , typename Data_extension = data::Data>

bool keyring_common::operations::Keyring_operations< Backend, Data_extension >::get_iterator_metadata	(	std::unique_ptr< iterator::Iterator< Data_extension > > &	it,
		meta::Metadata &	metadata,
		Data_extension &	data
	)

inline

Get metadata from iterator.

Parameters

[in]	it	Forward iterator to metadata
[out]	metadata	Metadata for given key
[out]	data	Extension for given key

Returns: Status

Return values

false	Success
true	Failure

◆ init_forward_iterator()

template<typename Backend , typename Data_extension = data::Data>

bool keyring_common::operations::Keyring_operations< Backend, Data_extension >::init_forward_iterator	(	std::unique_ptr< iterator::Iterator< Data_extension > > &	it,
		bool	cached
	)

inline

Iterator creation.

Parameters

[out]	it	Forward iterator to metadata
[in]	cached	Iterator type

Returns: Status

Return values

false	Success
true	Failure

◆ init_read_iterator()

template<typename Backend , typename Data_extension = data::Data>

bool keyring_common::operations::Keyring_operations< Backend, Data_extension >::init_read_iterator	(	std::unique_ptr< iterator::Iterator< Data_extension > > &	it,
		const meta::Metadata &	metadata
	)

inline

Iterator creation for read.

If data is cached, iterator on cached data is returned. Otherwise iterator created by backend is returned.

Parameters

[out]	it	Forward iterator to metadata
[in]	metadata	Metadata for the record to be searched

Returns: Status

Return values

false	Success
true	Failure

◆ insert()

template<typename Backend , typename Data_extension = data::Data>

bool keyring_common::operations::Keyring_operations< Backend, Data_extension >::insert	(	const meta::Metadata &	metadata,
		Data_extension	secret_data
	)

inline

Insert API to populate cache.

Parameters

[in]	metadata	Key to the data
[in]	secret_data	Actual data

Returns: status of insertion

Return values

false	Success
true	Failure

◆ is_valid()

template<typename Backend , typename Data_extension = data::Data>

bool keyring_common::operations::Keyring_operations< Backend, Data_extension >::is_valid ( std::unique_ptr< iterator::Iterator< Data_extension > > & it )

inline

Check iterator validity.

Parameters

[in] it Forward iterator to metadata

Returns: Status

Return values

true	Valid
false	Invalid

◆ keyring_size()

template<typename Backend , typename Data_extension = data::Data>

size_t keyring_common::operations::Keyring_operations< Backend, Data_extension >::keyring_size ( )

inline

Keyring size.

◆ load_cache()

template<typename Backend , typename Data_extension = data::Data>

void keyring_common::operations::Keyring_operations< Backend, Data_extension >::load_cache ( )

inlineprivate

◆ maximum_data_length()

template<typename Backend , typename Data_extension = data::Data>

size_t keyring_common::operations::Keyring_operations< Backend, Data_extension >::maximum_data_length ( ) const

inline

Maximum data length supported.

Returns: Maximum length supported

◆ next()

template<typename Backend , typename Data_extension = data::Data>

bool keyring_common::operations::Keyring_operations< Backend, Data_extension >::next ( std::unique_ptr< iterator::Iterator< Data_extension > > & it )

inline

Move iterator forward.

Parameters

[in] it Forward iterator to metadata

Returns: Status

Return values

false	Success
true	Failure

◆ store()

template<typename Backend , typename Data_extension = data::Data>

bool keyring_common::operations::Keyring_operations< Backend, Data_extension >::store	(	const meta::Metadata &	metadata,
		const data::Data &	data
	)

inline

Store API.

Parameters

[in]	metadata	Key to the data
[in]	data	Data to be stored

Returns: status of store operation

Return values

false	Success - data stored
true	Failure

◆ valid()

template<typename Backend , typename Data_extension = data::Data>

bool keyring_common::operations::Keyring_operations< Backend, Data_extension >::valid ( )

inline

Validity.

Member Data Documentation

◆ backend_

template<typename Backend , typename Data_extension = data::Data>

std::unique_ptr<Backend> keyring_common::operations::Keyring_operations< Backend, Data_extension >::backend_

private

Keyring backend.

◆ cache_

template<typename Backend , typename Data_extension = data::Data>

cache::Datacache<Data_extension> keyring_common::operations::Keyring_operations< Backend, Data_extension >::cache_

private

Metadata cache.

◆ cache_data_

template<typename Backend , typename Data_extension = data::Data>

bool keyring_common::operations::Keyring_operations< Backend, Data_extension >::cache_data_

private

Flag to cache data.

◆ valid_

template<typename Backend , typename Data_extension = data::Data>

bool keyring_common::operations::Keyring_operations< Backend, Data_extension >::valid_

private

Validity.

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

components/keyrings/common/operations/operations.h

Public Member Functions

Private Member Functions

Private Attributes

Detailed Description

Constructor & Destructor Documentation

◆ Keyring_operations()

◆ ~Keyring_operations()

Member Function Documentation

◆ deinit_forward_iterator()

◆ erase()

◆ generate()

◆ get()

◆ get_data_extension()

◆ get_iterator_data()

◆ get_iterator_metadata()

◆ init_forward_iterator()

◆ init_read_iterator()

◆ insert()

◆ is_valid()

◆ keyring_size()

◆ load_cache()

◆ maximum_data_length()

◆ next()

◆ store()

◆ valid()

Member Data Documentation

◆ backend_

◆ cache_

◆ cache_data_

◆ valid_