Package org.apache.hadoop.ozone.om

Class VolumeManagerImpl

java.lang.Object

org.apache.hadoop.ozone.om.VolumeManagerImpl

All Implemented Interfaces:

IOzoneAcl, VolumeManager

public class VolumeManagerImpl
extends Object
implements VolumeManager

Volume Manager implementation.

Constructor Summary

Constructors

Constructor	Description
VolumeManagerImpl(org.apache.hadoop.ozone.om.OMMetadataManager metadataManager)

Method Summary

Modifier and Type	Method	Description
boolean	checkAccess(org.apache.hadoop.ozone.security.acl.OzoneObj ozObject, org.apache.hadoop.ozone.security.acl.RequestContext context)	Check access for given ozoneObject.
List<org.apache.hadoop.ozone.OzoneAcl>	getAcl(org.apache.hadoop.ozone.security.acl.OzoneObj obj)	Returns list of ACLs for given Ozone object.
org.apache.hadoop.ozone.om.helpers.OmVolumeArgs	getVolumeInfo(String volume)	Gets the volume information.
List<org.apache.hadoop.ozone.om.helpers.OmVolumeArgs>	listVolumes(String userName, String prefix, String startKey, int maxKeys)	Returns a list of volumes owned by a given user; if user is null, returns all volumes.

Methods inherited from class java.lang.Object

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

Constructor Details

VolumeManagerImpl

public VolumeManagerImpl(org.apache.hadoop.ozone.om.OMMetadataManager metadataManager)

Method Details

getVolumeInfo

public org.apache.hadoop.ozone.om.helpers.OmVolumeArgs getVolumeInfo(String volume)
                                                              throws IOException

Description copied from interface: VolumeManager

Gets the volume information.

Specified by:

getVolumeInfo in interface VolumeManager

Parameters:

volume - - Volume name.

Returns:

VolumeArgs or exception is thrown.

Throws:

IOException

listVolumes

public List<org.apache.hadoop.ozone.om.helpers.OmVolumeArgs> listVolumes(String userName,
 String prefix,
 String startKey,
 int maxKeys)
                                                                  throws IOException

Description copied from interface: VolumeManager

Returns a list of volumes owned by a given user; if user is null, returns all volumes.

Specified by:

listVolumes in interface VolumeManager

Parameters:

userName - volume owner

prefix - the volume prefix used to filter the listing result.

startKey - the start volume name determines where to start listing from, this key is excluded from the result.

maxKeys - the maximum number of volumes to return.

Returns:

a list of OmVolumeArgs

Throws:

IOException

getAcl

public List<org.apache.hadoop.ozone.OzoneAcl> getAcl(org.apache.hadoop.ozone.security.acl.OzoneObj obj)
                                              throws IOException

Description copied from interface: IOzoneAcl

Returns list of ACLs for given Ozone object.

Specified by:

getAcl in interface IOzoneAcl

Parameters:

obj - Ozone object.

Throws:

IOException - if there is error.

checkAccess

public boolean checkAccess(org.apache.hadoop.ozone.security.acl.OzoneObj ozObject,
 org.apache.hadoop.ozone.security.acl.RequestContext context)
                    throws org.apache.hadoop.ozone.om.exceptions.OMException

Description copied from interface: IOzoneAcl

Check access for given ozoneObject.

Specified by:

checkAccess in interface IOzoneAcl

Parameters:

ozObject - object for which access needs to be checked.

context - Context object encapsulating all user related information.

Returns:

true if user has access else false.

Throws:

org.apache.hadoop.ozone.om.exceptions.OMException