Package org.apache.hadoop.ozone.om.upgrade

Class OMLayoutVersionManager

java.lang.Object

org.apache.hadoop.ozone.upgrade.AbstractLayoutVersionManager<OMLayoutFeature>

org.apache.hadoop.ozone.om.upgrade.OMLayoutVersionManager

All Implemented Interfaces:

org.apache.hadoop.ozone.upgrade.LayoutVersionManager, org.apache.hadoop.ozone.upgrade.LayoutVersionManagerMXBean

public final class OMLayoutVersionManager
extends org.apache.hadoop.ozone.upgrade.AbstractLayoutVersionManager<OMLayoutFeature>

Class to manage layout versions and features for Ozone Manager.

Field Summary

Fields

Modifier and Type	Field	Description
static final String	OM_CLASS_PACKAGE
static final String	OM_REQUEST_CLASS_PACKAGE
static final String	OM_UPGRADE_CLASS_PACKAGE

Fields inherited from class org.apache.hadoop.ozone.upgrade.AbstractLayoutVersionManager

featureMap, features

Constructor Summary

Constructors

Constructor	Description
OMLayoutVersionManager()
OMLayoutVersionManager(int layoutVersion)

Method Summary

Modifier and Type	Method	Description
void	finalized(OMLayoutFeature layoutFeature)
Class<? extends OMClientRequest>	getHandler(String type)	Given a type and version, get the corresponding request class type.
static Set<Class<? extends OMClientRequest>>	getRequestClasses(String packageName)
static int	maxLayoutVersion()
protected void	registerUpgradeActions(String packageName)	Scan classpath and register all actions to layout features.

Methods inherited from class org.apache.hadoop.ozone.upgrade.AbstractLayoutVersionManager

close, getFeature, getFeature, getMetadataLayoutVersion, getSoftwareLayoutVersion, getUpgradeState, init, isAllowed, isAllowed, needsFinalization, setUpgradeState, unfinalizedFeatures

Methods inherited from class java.lang.Object

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

Field Details

OM_CLASS_PACKAGE

public static final String OM_CLASS_PACKAGE

See Also:

• Constant Field Values

OM_REQUEST_CLASS_PACKAGE

public static final String OM_REQUEST_CLASS_PACKAGE

See Also:

• Constant Field Values

OM_UPGRADE_CLASS_PACKAGE

public static final String OM_UPGRADE_CLASS_PACKAGE

See Also:

• Constant Field Values

Constructor Details

OMLayoutVersionManager

public OMLayoutVersionManager(int layoutVersion)
                       throws org.apache.hadoop.ozone.om.exceptions.OMException

Throws:

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

OMLayoutVersionManager

public OMLayoutVersionManager()
                       throws IOException

Throws:

IOException

Method Details

registerUpgradeActions

protected void registerUpgradeActions(String packageName)

Scan classpath and register all actions to layout features.

getRequestClasses

public static Set<Class<? extends OMClientRequest>> getRequestClasses(String packageName)

getHandler

public Class<? extends OMClientRequest> getHandler(String type)

Given a type and version, get the corresponding request class type.

Parameters:

type - type string

Returns:

class type.

finalized

public void finalized(OMLayoutFeature layoutFeature)

Overrides:

finalized in class org.apache.hadoop.ozone.upgrade.AbstractLayoutVersionManager<OMLayoutFeature>

maxLayoutVersion

public static int maxLayoutVersion()