Package org.apache.hadoop.hdfs.server.namenode

Class INodeAttributeProvider

java.lang.Object

org.apache.hadoop.hdfs.server.namenode.INodeAttributeProvider

Direct Known Subclasses:

DefaultINodeAttributesProvider

@Public
@Unstable
public abstract class INodeAttributeProvider
extends Object

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static interface	INodeAttributeProvider.AccessControlEnforcer	The AccessControlEnforcer allows implementations to override the default File System permission checking logic enforced on a file system object
static class	INodeAttributeProvider.AuthorizationContext

Constructor Summary

Constructors

Constructor	Description
INodeAttributeProvider()

Method Summary

Modifier and Type	Method	Description
INodeAttributes	getAttributes(byte[][] components, INodeAttributes inode)
abstract INodeAttributes	getAttributes(String[] pathElements, INodeAttributes inode)
INodeAttributes	getAttributes(String fullPath, INodeAttributes inode)	Deprecated.
INodeAttributeProvider.AccessControlEnforcer	getExternalAccessControlEnforcer(INodeAttributeProvider.AccessControlEnforcer defaultEnforcer)	Can be over-ridden by implementations to provide a custom Access Control Enforcer that can provide an alternate implementation of the default permission checking logic.
abstract void	start()	Initialize the provider.
abstract void	stop()	Shutdown the provider.

Methods inherited from class java.lang.Object

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

Constructor Details

INodeAttributeProvider

public INodeAttributeProvider()

Method Details

start

public abstract void start()

Initialize the provider. This method is called at NameNode startup time.

stop

public abstract void stop()

Shutdown the provider. This method is called at NameNode shutdown time.

getAttributes

@Deprecated
public INodeAttributes getAttributes(String fullPath,
 INodeAttributes inode)

Deprecated.

getAttributes

public abstract INodeAttributes getAttributes(String[] pathElements,
 INodeAttributes inode)

getAttributes

public INodeAttributes getAttributes(byte[][] components,
 INodeAttributes inode)

getExternalAccessControlEnforcer

public INodeAttributeProvider.AccessControlEnforcer getExternalAccessControlEnforcer(INodeAttributeProvider.AccessControlEnforcer defaultEnforcer)

Can be over-ridden by implementations to provide a custom Access Control Enforcer that can provide an alternate implementation of the default permission checking logic.

Parameters:

defaultEnforcer - The Default AccessControlEnforcer

Returns:

The AccessControlEnforcer to use