Interface IWriteAheadLog<TKey, TValue>

Inherited Members

Namespace: Tenray.ZoneTree.WAL

Assembly: ZoneTree.dll

Syntax

public interface IWriteAheadLog<TKey, TValue> : IDisposable

Type Parameters

Name	Description
TKey
TValue

Properties

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EnableIncrementalBackup

Declaration

bool EnableIncrementalBackup { get; set; }

Property Value

Type	Description
bool

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FilePath

Declaration

string FilePath { get; }

Property Value

Type	Description
string

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InitialLength

The initial record count of the log. It is available after the ReadLogEntries call.

Declaration

int InitialLength { get; }

Property Value

Type	Description
int

Methods

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Append(in TKey, in TValue, long)

Declaration

void Append(in TKey key, in TValue value, long opIndex)

Parameters

Type	Name	Description
TKey	key
TValue	value
long	opIndex

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Drop()

Declaration

void Drop()

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MarkFrozen()

Informs the write ahead log that no further writes will be sent. to let WAL optimize itself.

Declaration

void MarkFrozen()

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ReadLogEntries(bool, bool, bool)

Declaration

WriteAheadLogReadLogEntriesResult<TKey, TValue> ReadLogEntries(bool stopReadOnException, bool stopReadOnChecksumFailure, bool sortByOpIndexes)

Parameters

Type	Name	Description
bool	stopReadOnException
bool	stopReadOnChecksumFailure
bool	sortByOpIndexes

Returns

Type	Description
WriteAheadLogReadLogEntriesResult<TKey, TValue>

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ReplaceWriteAheadLog(TKey[], TValue[], bool)

Replaces the entire write ahead log, with given keys and values. If enabled, appends current wal data to the incremental backup log.

Declaration

long ReplaceWriteAheadLog(TKey[] keys, TValue[] values, bool disableBackup)

Parameters

Type	Name	Description
TKey[]	keys	new keys
TValue[]	values	new values
bool	disableBackup	disable backup regardless of wal flag.

Returns

Type	Description
long	the difference: old file length - new file length.

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TruncateIncompleteTailRecord(IncompleteTailRecordFoundException)

Truncates incomplete tail record.

Declaration

void TruncateIncompleteTailRecord(IncompleteTailRecordFoundException incompleteTailException)

Parameters

Type	Name	Description
IncompleteTailRecordFoundException	incompleteTailException