org.gridgain.grid.persistentstore

Enum SnapshotSecurityLevel

java.lang.Object

java.lang.Enum<SnapshotSecurityLevel>

org.gridgain.grid.persistentstore.SnapshotSecurityLevel

All Implemented Interfaces:

Serializable, Comparable<SnapshotSecurityLevel>

public enum SnapshotSecurityLevel
extends Enum<SnapshotSecurityLevel>

The possible modes of snapshot security. The security of snapshot is achieved by means of maintaining a file registry. Snapshot file registry is the special file in the snapshot folder that contains the list of individual files comprising the snapshot along with their cryptographic hashes. The content of this file may be analyzed to verify the integrity and authenticity of the snapshot before it is restored or at arbitrary moment. The algorithm used to calculate cryptographic hashes that provide the snapshot integrity is configured with the help of a factory object set in the snapshot configuration. The authenticity of snapshot is provided by means of custom transformer class which instance may be provided in the snapshot configuration. The transformer instance is passed the content of the file registry and the former generates the verification code which is then appended to the file registry itself. The verification code is passed back to the transformer when the snapshot is restored to verify its authenticity. The snapshot security level must be the same on all nodes in the cluster.

Enum Constant Summary

Enum Constants

Enum Constant and Description
DISABLED Snapshot file registry is not created and never validated if present (default).
IGNORE_EXISTING Snapshot file registry is included into new snapshots.
IGNORE_MISSING Snapshot file registry is included into new snapshots.
REQUIRE Snapshot file registry is included into new snapshots.

Method Summary

Modifier and Type	Method and Description
static @Nullable SnapshotSecurityLevel	fromOrdinal(int ord) Efficiently gets enumerated value from its ordinal.
static SnapshotSecurityLevel	valueOf(String name) Returns the enum constant of this type with the specified name.
static SnapshotSecurityLevel[]	values() Returns an array containing the constants of this enum type, in the order they are declared.

Methods inherited from class java.lang.Enum

clone, compareTo, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Detail

DISABLED

public static final SnapshotSecurityLevel DISABLED

Snapshot file registry is not created and never validated if present (default).

IGNORE_EXISTING

public static final SnapshotSecurityLevel IGNORE_EXISTING

Snapshot file registry is included into new snapshots. Existing file registries in snapshots are not verified.

IGNORE_MISSING

public static final SnapshotSecurityLevel IGNORE_MISSING

Snapshot file registry is included into new snapshots. Existing file registries in snapshots DO GET verified. Missing file registries in snapshots are tolerated.

REQUIRE

public static final SnapshotSecurityLevel REQUIRE

Snapshot file registry is included into new snapshots. Presence and validity of file registries in all snapshots is required.

Method Detail

values

public static SnapshotSecurityLevel[] values()

Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the constants as follows:

for (SnapshotSecurityLevel c : SnapshotSecurityLevel.values())
    System.out.println(c);

Returns:

an array containing the constants of this enum type, in the order they are declared

valueOf

public static SnapshotSecurityLevel valueOf(String name)

Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)

Parameters:

name - the name of the enum constant to be returned.

Returns:

the enum constant with the specified name

Throws:

IllegalArgumentException - if this enum type has no constant with the specified name

NullPointerException - if the argument is null

fromOrdinal

@Nullable
public static @Nullable SnapshotSecurityLevel fromOrdinal(int ord)

Efficiently gets enumerated value from its ordinal.

Parameters:

ord - Ordinal value.

Returns:

Enumerated value or null if ordinal out of range.