Class DefaultStore

The default built-in IStore implementation. This stores data in the file system or in memory. It also uses LiteDB for some complex indices.

Inheritance

Object

BaseStore

DefaultStore

Implements

IStore

IDisposable

Inherited Members

BaseStore.GetBlock<T>(HashDigest<SHA256>)

BaseStore.GetBlockIndex(HashDigest<SHA256>)

Namespace: Libplanet.Store

Assembly: Libplanet.dll

Syntax

public class DefaultStore : BaseStore, IStore, IDisposable

Constructors

DefaultStore(String, Boolean, Boolean, Int32, Int32, Int32, Int32, Boolean, Boolean)

Creates a new DefaultStore.

Declaration

public DefaultStore(string path, bool compress = false, bool journal = true, int indexCacheSize = 50000, int blockCacheSize = 512, int txCacheSize = 1024, int statesCacheSize = 10000, bool flush = true, bool readOnly = false)

Parameters

Type	Name	Description
String	path	The path of the directory where the storage files will be saved. If the path is null, the database is created in memory.
Boolean	compress	Whether to compress data. Does not compress by default.
Boolean	journal	Enables or disables double write check to ensure durability.
Int32	indexCacheSize	Max number of pages in the index cache.
Int32	blockCacheSize	The capacity of the block cache.
Int32	txCacheSize	The capacity of the transaction cache.
Int32	statesCacheSize	The capacity of the states cache.
Boolean	flush	Writes data direct to disk avoiding OS cache. Turned on by default.
Boolean	readOnly	Opens database readonly mode. Turned off by default.

Methods

AppendIndex(Guid, HashDigest<SHA256>)

Declaration

public override long AppendIndex(Guid chainId, HashDigest<SHA256> hash)

Parameters

Type	Name	Description
Guid	chainId
HashDigest<SHA256>	hash

Returns

Type	Description
Int64

Overrides

BaseStore.AppendIndex(Guid, HashDigest<SHA256>)

ContainsBlock(HashDigest<SHA256>)

Determines whether the IStore contains Block<T> the specified blockHash.

Declaration

public override bool ContainsBlock(HashDigest<SHA256> blockHash)

Parameters

Type	Name	Description
HashDigest<SHA256>	blockHash	The HashDigest<T> of the Block<T> to check if it is in the IStore.

Returns

Type	Description
Boolean	true if the IStore contains Block<T> with the specified blockHash; otherwise, false.

Overrides

BaseStore.ContainsBlock(HashDigest<SHA256>)

ContainsTransaction(TxId)

Determines whether the IStore contains Transaction<T> the specified txId.

Declaration

public override bool ContainsTransaction(TxId txId)

Parameters

Type	Name	Description
TxId	txId	The TxId of the Transaction<T> to check if it is in the IStore.

Returns

Type	Description
Boolean	true if the IStore contains Transaction<T> with the specified txId; otherwise, false.

Overrides

BaseStore.ContainsTransaction(TxId)

CountBlocks()

Declaration

public override long CountBlocks()

Returns

Type	Description
Int64

Overrides

BaseStore.CountBlocks()

CountIndex(Guid)

Declaration

public override long CountIndex(Guid chainId)

Parameters

Type	Name	Description
Guid	chainId

Returns

Type	Description
Int64

Overrides

BaseStore.CountIndex(Guid)

CountTransactions()

Declaration

public override long CountTransactions()

Returns

Type	Description
Int64

Overrides

BaseStore.CountTransactions()

DeleteBlock(HashDigest<SHA256>)

Declaration

public override bool DeleteBlock(HashDigest<SHA256> blockHash)

Parameters

Type	Name	Description
HashDigest<SHA256>	blockHash

Returns

Type	Description
Boolean

Overrides

BaseStore.DeleteBlock(HashDigest<SHA256>)

DeleteChainId(Guid)

Deletes an index, tx nonces, and state references in the given chainId. It also deletes chain itself. If there is no such chainId it does nothing.

Declaration

public override void DeleteChainId(Guid chainId)

Parameters

Type	Name	Description
Guid	chainId	The ID of chain to delete.

Overrides

BaseStore.DeleteChainId(Guid)

Remarks

This does not delete blocks or transactions that belong to the index of the chainId, but only the index, tx nonces, and state references.

DeleteIndex(Guid, HashDigest<SHA256>)

Declaration

public override bool DeleteIndex(Guid chainId, HashDigest<SHA256> hash)

Parameters

Type	Name	Description
Guid	chainId
HashDigest<SHA256>	hash

Returns

Type	Description
Boolean

Overrides

BaseStore.DeleteIndex(Guid, HashDigest<SHA256>)

DeleteTransaction(TxId)

Declaration

public override bool DeleteTransaction(TxId txid)

Parameters

Type	Name	Description
TxId	txid

Returns

Type	Description
Boolean

Overrides

BaseStore.DeleteTransaction(TxId)

Dispose()

Declaration

public void Dispose()

ForkBlockIndexes(Guid, Guid, HashDigest<SHA256>)

Forks block indexes from sourceChainId to destinationChainId.

Declaration

public override void ForkBlockIndexes(Guid sourceChainId, Guid destinationChainId, HashDigest<SHA256> branchPoint)

Parameters

Type	Name	Description
Guid	sourceChainId	The chain ID of block indexes to fork.
Guid	destinationChainId	The chain ID of destination block indexes.
HashDigest<SHA256>	branchPoint	The branch point Block<T> to fork.

Overrides

BaseStore.ForkBlockIndexes(Guid, Guid, HashDigest<SHA256>)

Exceptions

Type	Condition
ChainIdNotFoundException	Thrown when the given sourceChainId does not exist.

See Also

IterateIndexes(Guid, Int32, Nullable<Int32>)

AppendIndex(Guid, HashDigest<SHA256>)

ForkStateReferences<T>(Guid, Guid, Block<T>)

Declaration

public override void ForkStateReferences<T>(Guid sourceChainId, Guid destinationChainId, Block<T> branchPoint)
    where T : IAction, new()

Parameters

Type	Name	Description
Guid	sourceChainId
Guid	destinationChainId
Block<T>	branchPoint

Type Parameters

Name	Description
T

Overrides

Libplanet.Store.BaseStore.ForkStateReferences<T>(Guid, Guid, Libplanet.Blocks.Block<T>)

GetBlockStates(HashDigest<SHA256>)

Declaration

public override IImmutableDictionary<string, IValue> GetBlockStates(HashDigest<SHA256> blockHash)

Parameters

Type	Name	Description
HashDigest<SHA256>	blockHash

Returns

Type	Description
IImmutableDictionary<String, IValue>

Overrides

BaseStore.GetBlockStates(HashDigest<SHA256>)

GetCanonicalChainId()

Gets the ID of the current canonical chain.

Declaration

public override Guid? GetCanonicalChainId()

Returns

Type	Description
Nullable<Guid>	The ID of the current canonical chain. Maybe null.

Overrides

BaseStore.GetCanonicalChainId()

See Also

SetCanonicalChainId(Guid)

GetTransaction<T>(TxId)

Declaration

public override Transaction<T> GetTransaction<T>(TxId txid)
    where T : IAction, new()

Parameters

Type	Name	Description
TxId	txid

Returns

Type	Description
Transaction<T>

Type Parameters

Name	Description
T

Overrides

BaseStore.GetTransaction<T>(TxId)

GetTxNonce(Guid, Address)

Gets Transaction<T> nonce of the address.

Declaration

public override long GetTxNonce(Guid chainId, Address address)

Parameters

Type	Name	Description
Guid	chainId	The ID of the chain to get Transaction<T> nonce.
Address	address	The Address to get Transaction<T> nonce.

Returns

Type	Description
Int64	A Transaction<T> nonce. If there is no previous Transaction<T>, return 0.

Overrides

BaseStore.GetTxNonce(Guid, Address)

See Also

IncreaseTxNonce(Guid, Address, Int64)

IncreaseTxNonce(Guid, Address, Int64)

Increases (or decreases if a negative delta is given) the tx nonce counter for signer.

Declaration

public override void IncreaseTxNonce(Guid chainId, Address signer, long delta = null)

Parameters

Type	Name	Description
Guid	chainId	The ID of the chain to increase Transaction<T> nonce.
Address	signer	The address of the account to increase tx nonce.
Int64	delta	How many to increase the counter. A negative number decreases the counter. 1 by default.

Overrides

BaseStore.IncreaseTxNonce(Guid, Address, Int64)

See Also

GetTxNonce(Guid, Address)

IndexBlockHash(Guid, Int64)

Declaration

public override HashDigest<SHA256>? IndexBlockHash(Guid chainId, long index)

Parameters

Type	Name	Description
Guid	chainId
Int64	index

Returns

Type	Description
Nullable<HashDigest<SHA256>>

Overrides

BaseStore.IndexBlockHash(Guid, Int64)

IterateBlockHashes()

Declaration

public override IEnumerable<HashDigest<SHA256>> IterateBlockHashes()

Returns

Type	Description
IEnumerable<HashDigest<SHA256>>

Overrides

BaseStore.IterateBlockHashes()

IterateIndexes(Guid, Int32, Nullable<Int32>)

Declaration

public override IEnumerable<HashDigest<SHA256>> IterateIndexes(Guid chainId, int offset, int? limit)

Parameters

Type	Name	Description
Guid	chainId
Int32	offset
Nullable<Int32>	limit

Returns

Type	Description
IEnumerable<HashDigest<SHA256>>

Overrides

BaseStore.IterateIndexes(Guid, Int32, Nullable<Int32>)

IterateStagedTransactionIds()

Iterates staged TxIds.

Declaration

public override IEnumerable<TxId> IterateStagedTransactionIds()

Returns

Type	Description
IEnumerable<TxId>	Staged TxIds.

Overrides

BaseStore.IterateStagedTransactionIds()

IterateStateReferences(Guid, String, Nullable<Int64>, Nullable<Int64>, Nullable<Int32>)

Gets pairs of a state reference and a corresponding Index of the requested key in the specified chainId.

Declaration

public override IEnumerable<Tuple<HashDigest<SHA256>, long>> IterateStateReferences(Guid chainId, string key, long? highestIndex, long? lowestIndex, int? limit)

Parameters

Type	Name	Description
Guid	chainId	The chain ID.
String	key	The key to get state references.
Nullable<Int64>	highestIndex	The highest index of state references to get. If it is null, it will be the highest index possible.
Nullable<Int64>	lowestIndex	The lowest index of state references to get. If it is null, it will be the lowest index possible.
Nullable<Int32>	limit	The maximum number of state references to get. If it is null, it does not limit the number of state references.

Returns

Type	Description
IEnumerable<Tuple<HashDigest<SHA256>, Int64>>	Ordered pairs of a state reference and a corresponding Index. The highest index (i.e., the closest to the tip) goes first and the lowest index (i.e., the closest to the genesis) goes last.

Overrides

BaseStore.IterateStateReferences(Guid, String, Nullable<Int64>, Nullable<Int64>, Nullable<Int32>)

See Also

StoreStateReference(Guid, IImmutableSet<String>, HashDigest<SHA256>, Int64)

IterateTransactionIds()

Declaration

public override IEnumerable<TxId> IterateTransactionIds()

Returns

Type	Description
IEnumerable<TxId>

Overrides

BaseStore.IterateTransactionIds()

ListAllStateReferences(Guid, Int64, Int64)

Lists all accounts, that have any states, in the given chainId and their state references.

Declaration

public override IImmutableDictionary<string, IImmutableList<HashDigest<SHA256>>> ListAllStateReferences(Guid chainId, long lowestIndex = null, long highestIndex = null)

Parameters

Type	Name	Description
Guid	chainId	The chain ID to look up state references.
Int64	lowestIndex	Includes state references only made after the block this argument refers to.
Int64	highestIndex	Excludes state references made after the block this argument refers to.

Returns

Type	Description
IImmutableDictionary<String, IImmutableList<HashDigest<SHA256>>>	A dictionary of account addresses to lists of their corresponding state references. Each list of state references is in ascending order, i.e., the block closest to the genesis goes first and the block closest to the tip goes last.

Overrides

BaseStore.ListAllStateReferences(Guid, Int64, Int64)

ListChainIds()

Lists existing chain IDs.

Declaration

public override IEnumerable<Guid> ListChainIds()

Returns

Type	Description
IEnumerable<Guid>	Existing chain IDs.

Overrides

BaseStore.ListChainIds()

ListStateKeys(Guid)

Lists all keys that have ever had states.

Declaration

public override IEnumerable<string> ListStateKeys(Guid chainId)

Parameters

Type	Name	Description
Guid	chainId	The ID of the chain to list state keys.

Returns

Type	Description
IEnumerable<String>	All state keys in an arbitrary order. The order might be vary for each call.

Overrides

BaseStore.ListStateKeys(Guid)

ListTxNonces(Guid)

Lists all Addresses that have ever signed Transaction<T>, and their corresponding Transaction<T> nonces.

Declaration

public override IEnumerable<KeyValuePair<Address, long>> ListTxNonces(Guid chainId)

Parameters

Type	Name	Description
Guid	chainId	The ID of the chain to list Addresses and their Transaction<T> nonces.

Returns

Type	Description
IEnumerable<KeyValuePair<Address, Int64>>	Pairs of an Address and its tx nonce. All nonces are greater than 0. (If there are underlying entries having zero nonces these must be hidden.)

Overrides

BaseStore.ListTxNonces(Guid)

See Also

GetTxNonce(Guid, Address)

LookupStateReference<T>(Guid, String, Block<T>)

Declaration

public override Tuple<HashDigest<SHA256>, long> LookupStateReference<T>(Guid chainId, string key, Block<T> lookupUntil)
    where T : IAction, new()

Parameters

Type	Name	Description
Guid	chainId
String	key
Block<T>	lookupUntil

Returns

Type	Description
Tuple<HashDigest<SHA256>, Int64>

Type Parameters

Name	Description
T

Overrides

Libplanet.Store.BaseStore.LookupStateReference<T>(Guid, System.String, Libplanet.Blocks.Block<T>)

PutBlock<T>(Block<T>)

Declaration

public override void PutBlock<T>(Block<T> block)
    where T : IAction, new()

Parameters

Type	Name	Description
Block<T>	block

Type Parameters

Name	Description
T

Overrides

Libplanet.Store.BaseStore.PutBlock<T>(Libplanet.Blocks.Block<T>)

PutTransaction<T>(Transaction<T>)

Declaration

public override void PutTransaction<T>(Transaction<T> tx)
    where T : IAction, new()

Parameters

Type	Name	Description
Transaction<T>	tx

Type Parameters

Name	Description
T

Overrides

Libplanet.Store.BaseStore.PutTransaction<T>(Libplanet.Tx.Transaction<T>)

SetBlockStates(HashDigest<SHA256>, IImmutableDictionary<String, IValue>)

Declaration

public override void SetBlockStates(HashDigest<SHA256> blockHash, IImmutableDictionary<string, IValue> states)

Parameters

Type	Name	Description
HashDigest<SHA256>	blockHash
IImmutableDictionary<String, IValue>	states

Overrides

BaseStore.SetBlockStates(HashDigest<SHA256>, IImmutableDictionary<String, IValue>)

SetCanonicalChainId(Guid)

Sets the canonical chain.

Declaration

public override void SetCanonicalChainId(Guid chainId)

Parameters

Type	Name	Description
Guid	chainId	The ID of a new canonical chain.

Overrides

BaseStore.SetCanonicalChainId(Guid)

See Also

GetCanonicalChainId()

StageTransactionIds(IImmutableSet<TxId>)

Adds TxIds to the pending list so that a next Block<T> to be mined contains the corresponding Transaction<T>s.

Declaration

public override void StageTransactionIds(IImmutableSet<TxId> txids)

Parameters

Type	Name	Description
IImmutableSet<TxId>	txids	TxIds to add to pending list.

Overrides

BaseStore.StageTransactionIds(IImmutableSet<TxId>)

StoreStateReference(Guid, IImmutableSet<String>, HashDigest<SHA256>, Int64)

Declaration

public override void StoreStateReference(Guid chainId, IImmutableSet<string> keys, HashDigest<SHA256> blockHash, long blockIndex)

Parameters

Type	Name	Description
Guid	chainId
IImmutableSet<String>	keys
HashDigest<SHA256>	blockHash
Int64	blockIndex

Overrides

BaseStore.StoreStateReference(Guid, IImmutableSet<String>, HashDigest<SHA256>, Int64)

UnstageTransactionIds(ISet<TxId>)

Declaration

public override void UnstageTransactionIds(ISet<TxId> txids)

Parameters

Type	Name	Description
ISet<TxId>	txids

Overrides

BaseStore.UnstageTransactionIds(ISet<TxId>)

Implements

IStore

IDisposable

See Also

IStore