Package org.apache.flink.runtime.checkpoint

Enum ZooKeeperCheckpointStoreUtil

java.lang.Object

java.lang.Enum<ZooKeeperCheckpointStoreUtil>

org.apache.flink.runtime.checkpoint.ZooKeeperCheckpointStoreUtil

All Implemented Interfaces:

Serializable, Comparable<ZooKeeperCheckpointStoreUtil>, CheckpointStoreUtil

public enum ZooKeeperCheckpointStoreUtil
extends Enum<ZooKeeperCheckpointStoreUtil>
implements CheckpointStoreUtil

Singleton CheckpointStoreUtil implementation for ZooKeeper.

Enum Constant Summary

Enum Constants

Enum Constant	Description
INSTANCE

Field Summary

Fields inherited from interface org.apache.flink.runtime.checkpoint.CheckpointStoreUtil

INVALID_CHECKPOINT_ID

Method Summary

Modifier and Type	Method	Description
String	checkpointIDToName(long checkpointId)	Convert a checkpoint id into a ZooKeeper path.
long	nameToCheckpointID(String path)	Converts a path to the checkpoint id.
static ZooKeeperCheckpointStoreUtil	valueOf(String name)	Returns the enum constant of this type with the specified name.
static ZooKeeperCheckpointStoreUtil[]	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

INSTANCE

public static final ZooKeeperCheckpointStoreUtil INSTANCE

Method Detail

values

public static ZooKeeperCheckpointStoreUtil[] 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 (ZooKeeperCheckpointStoreUtil c : ZooKeeperCheckpointStoreUtil.values())
    System.out.println(c);

Returns:

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

valueOf

public static ZooKeeperCheckpointStoreUtil 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

checkpointIDToName

public String checkpointIDToName(long checkpointId)

Convert a checkpoint id into a ZooKeeper path.

Specified by:

checkpointIDToName in interface CheckpointStoreUtil

Parameters:

checkpointId - to convert to the path

Returns:

Path created from the given checkpoint id

nameToCheckpointID

public long nameToCheckpointID(String path)

Converts a path to the checkpoint id.

Specified by:

nameToCheckpointID in interface CheckpointStoreUtil

Parameters:

path - in ZooKeeper

Returns:

Checkpoint id parsed from the path