ripple::NodeStore::DeterministicShard Class Reference

DeterministicShard class. More...

Collaboration diagram for ripple::NodeStore::DeterministicShard:

Public Types
using	nodeptr = std::shared_ptr< NodeObject >

Public Member Functions
	DeterministicShard (DeterministicShard const &)=delete
DeterministicShard &	operator= (DeterministicShard const &)=delete
	DeterministicShard (Application &app, DatabaseShard const &db, std::uint32_t index, uint256 const &lastHash, beast::Journal j)
	Creates the object for shard database. More...
	~DeterministicShard ()
bool	init ()
	Initializes the deterministic shard. More...
void	close (bool cancel=false)
	Finalizes and closes the shard. More...
void	store (nodeptr nobj)
	Store the object into memory pool. More...
void	flush ()
	Flush all objects from memory pool to shard. More...

Private Member Functions
uint160	hash (const uint256 &lastHash) const
std::uint64_t	digest (int n) const

Private Attributes
bool	inited_
std::set< nodeptr, std::function< bool(nodeptr, nodeptr)> >	nodeset_
Application &	app_
DatabaseShard const &	db_
const std::uint32_t	index_
const uint160	hash_
const boost::filesystem::path	tempdir_
const boost::filesystem::path	finaldir_
DummyScheduler	scheduler_
std::unique_ptr< nudb::context >	ctx_
std::shared_ptr< Backend >	backend_
const beast::Journal	j_

Detailed Description

DeterministicShard class.

1. The init() method creates temporary folder tempdir_, and the deterministic shard is initialized in that folder.
2. The store() method adds object to memory pool.
3. The flush() method stores all objects from memory pool to the shard located in tempdir_ in sorted order.
4. The close(true) method finalizes the shard and moves it from tempdir_ temporary folder to filandir_ permanent folder, deleting old (non-deterministic) shard located in finaldir_.

Definition at line 42 of file DeterministicShard.h.

Member Typedef Documentation

nodeptr

using ripple::NodeStore::DeterministicShard::nodeptr = std::shared_ptr<NodeObject>

Definition at line 45 of file DeterministicShard.h.

Constructor & Destructor Documentation

DeterministicShard() [1/2]

ripple::NodeStore::DeterministicShard::DeterministicShard ( DeterministicShard const &  )

delete

DeterministicShard() [2/2]

ripple::NodeStore::DeterministicShard::DeterministicShard	(	Application &	app,
		DatabaseShard const &	db,
		std::uint32_t	index,
		uint256 const &	lastHash,
		beast::Journal	j
	)

Creates the object for shard database.

Parameters

app	Application object
db	Shard Database which deterministic shard belongs to
index	Index of the shard
lastHash	Hash of last ledger in the shard
j	Journal to logging

Definition at line 35 of file DeterministicShard.cpp.

~DeterministicShard()

ripple::NodeStore::DeterministicShard::~DeterministicShard

(

)

Definition at line 54 of file DeterministicShard.cpp.

Member Function Documentation

operator=()

DeterministicShard& ripple::NodeStore::DeterministicShard::operator= ( DeterministicShard const &  )

delete

init()

bool ripple::NodeStore::DeterministicShard::init

(

)

Initializes the deterministic shard.

Returns

true is success, false if errored

Definition at line 100 of file DeterministicShard.cpp.

close()

void ripple::NodeStore::DeterministicShard::close

(

bool

cancel = false

)

Finalizes and closes the shard.

Parameters

cancel

True if reject the shard and delete all files, false if finalize the shard and store them

Definition at line 163 of file DeterministicShard.cpp.

store()

void ripple::NodeStore::DeterministicShard::store

(

nodeptr

nobj

)

Store the object into memory pool.

Parameters

nobj	Object to store.

Definition at line 183 of file DeterministicShard.cpp.

flush()

void ripple::NodeStore::DeterministicShard::flush

(

)

Flush all objects from memory pool to shard.

Definition at line 192 of file DeterministicShard.cpp.

hash()

uint160 ripple::NodeStore::DeterministicShard::hash ( const uint256 &  lastHash ) const

private

Definition at line 60 of file DeterministicShard.cpp.

digest()

std::uint64_t ripple::NodeStore::DeterministicShard::digest ( int  n ) const

private

Definition at line 76 of file DeterministicShard.cpp.

Member Data Documentation

inited_

bool ripple::NodeStore::DeterministicShard::inited_

private

Definition at line 105 of file DeterministicShard.h.

nodeset_

std::set<nodeptr, std::function<bool(nodeptr, nodeptr)> > ripple::NodeStore::DeterministicShard::nodeset_

private

Definition at line 108 of file DeterministicShard.h.

app_

Application& ripple::NodeStore::DeterministicShard::app_

private

Definition at line 111 of file DeterministicShard.h.

db_

DatabaseShard const& ripple::NodeStore::DeterministicShard::db_

private

Definition at line 114 of file DeterministicShard.h.

index_

const std::uint32_t ripple::NodeStore::DeterministicShard::index_

private

Definition at line 117 of file DeterministicShard.h.

hash_

const uint160 ripple::NodeStore::DeterministicShard::hash_

private

Definition at line 120 of file DeterministicShard.h.

tempdir_

const boost::filesystem::path ripple::NodeStore::DeterministicShard::tempdir_

private

Definition at line 123 of file DeterministicShard.h.

finaldir_

const boost::filesystem::path ripple::NodeStore::DeterministicShard::finaldir_

private

Definition at line 126 of file DeterministicShard.h.

scheduler_

DummyScheduler ripple::NodeStore::DeterministicShard::scheduler_

private

Definition at line 129 of file DeterministicShard.h.

ctx_

std::unique_ptr<nudb::context> ripple::NodeStore::DeterministicShard::ctx_

private

Definition at line 132 of file DeterministicShard.h.

backend_

std::shared_ptr<Backend> ripple::NodeStore::DeterministicShard::backend_

private

Definition at line 135 of file DeterministicShard.h.

j_

const beast::Journal ripple::NodeStore::DeterministicShard::j_

private

Definition at line 138 of file DeterministicShard.h.