org.apache.ignite.internal.processors.cache.persistence.filename

Class PdsFolderResolver<L extends FileLockHolder>

java.lang.Object

org.apache.ignite.internal.processors.cache.persistence.filename.PdsFolderResolver<L>

Type Parameters:

L - Type of the lock holder.

public class PdsFolderResolver<L extends FileLockHolder>
extends Object

This class contains logic to resolve and possibly lock PDS folder based on provided IgniteConfiguration and consistentId.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	PdsFolderResolver.FolderCandidate Represents parsed new style file and encoded parameters in this file name

Field Summary

Fields

Modifier and Type	Field and Description
static String	DB_DEFAULT_FOLDER Database default folder.
static FileFilter	DB_SUBFOLDERS_NEW_STYLE_FILTER Database subfolders for new style filter.

Constructor Summary

Constructors

Constructor and Description
PdsFolderResolver(IgniteConfiguration cfg, IgniteLogger log, @Nullable Serializable consistentId, Function<File,L> tryLock)

Method Summary

Modifier and Type	Method and Description
PdsFolderSettings<L>	generateNew()
static @NotNull String	genNewStyleSubfolderName(int nodeIdx, UUID uuid) Generates DB subfolder name for provided node index (local) and UUID (consistent ID)
static @Nullable PdsFolderResolver.FolderCandidate	parseSubFolderName(@NotNull File subFolderFile, @NotNull IgniteLogger log)
PdsFolderSettings<L>	resolve() Resolves PdsFolderSettings according to specified IgniteConfiguration, consistentId.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

DB_SUBFOLDERS_NEW_STYLE_FILTER

public static final FileFilter DB_SUBFOLDERS_NEW_STYLE_FILTER

Database subfolders for new style filter.

DB_DEFAULT_FOLDER

public static final String DB_DEFAULT_FOLDER

Database default folder.

See Also:

Constant Field Values

Constructor Detail

PdsFolderResolver

public PdsFolderResolver(IgniteConfiguration cfg,
                         IgniteLogger log,
                         @Nullable
                         @Nullable Serializable consistentId,
                         Function<File,L> tryLock)

Parameters:

cfg - Ignite configuration.

log - Logger.

consistentId - Constent id.

tryLock - Lock function.

Method Detail

resolve

public PdsFolderSettings<L> resolve()
                             throws IgniteCheckedException

Resolves PdsFolderSettings according to specified IgniteConfiguration, consistentId.

Returns:

new settings with prelocked directory (if appropriate) or null.

Throws:

IgniteCheckedException - if IO failed.

generateNew

public PdsFolderSettings<L> generateNew()
                                 throws IgniteCheckedException

Returns:

New PDS folder.

Throws:

IgniteCheckedException - In case of error.

genNewStyleSubfolderName

@NotNull
public static @NotNull String genNewStyleSubfolderName(int nodeIdx,
                                                                UUID uuid)

Generates DB subfolder name for provided node index (local) and UUID (consistent ID)

Parameters:

nodeIdx - node index.

uuid - consistent ID.

Returns:

folder file name

parseSubFolderName

@Nullable
public static @Nullable PdsFolderResolver.FolderCandidate parseSubFolderName(@NotNull
                                                                                       @NotNull File subFolderFile,
                                                                                       @NotNull
                                                                                       @NotNull IgniteLogger log)

Parameters:

subFolderFile - new style file to parse.

log - Logger.

Returns:

Pair of UUID and node index.