org.apache.ambari.server.stack.upgrade

Class ConfigUpgradePack

java.lang.Object

org.apache.ambari.server.stack.upgrade.ConfigUpgradePack

public class ConfigUpgradePack
extends Object

Represents a pack of changes that should be applied to configs when upgrading from a previous stack. In other words, it's a config delta from prev stack. After first call of enumerateConfigChangesByID() method, instance contains a cache of data, so it should not be modified in runtime (otherwise the cache will become outdated).

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	ConfigUpgradePack.AffectedComponent A component definition in the 'services/service' path.
static class	ConfigUpgradePack.AffectedService A service definition in the 'services' element.

Field Summary

Fields

Modifier and Type	Field and Description
List<ConfigUpgradePack.AffectedService>	services Defines per-service config changes.

Constructor Summary

Constructors

Constructor and Description
ConfigUpgradePack() no-arg default constructor for JAXB
ConfigUpgradePack(List<ConfigUpgradePack.AffectedService> services)

Method Summary

Modifier and Type	Method and Description
Map<String,ConfigUpgradeChangeDefinition>	enumerateConfigChangesByID()
Map<String,ConfigUpgradePack.AffectedService>	getServiceMap()
static ConfigUpgradePack	merge(ArrayList<ConfigUpgradePack> cups) Merges few config upgrade packs into one and returs result.

Methods inherited from class java.lang.Object

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

Field Detail

services

public List<ConfigUpgradePack.AffectedService> services

Defines per-service config changes.

Constructor Detail

ConfigUpgradePack

public ConfigUpgradePack()

no-arg default constructor for JAXB

ConfigUpgradePack

public ConfigUpgradePack(List<ConfigUpgradePack.AffectedService> services)

Method Detail

getServiceMap

public Map<String,ConfigUpgradePack.AffectedService> getServiceMap()

Returns:

a map of .

enumerateConfigChangesByID

public Map<String,ConfigUpgradeChangeDefinition> enumerateConfigChangesByID()

Returns:

a map of . Map is built once and cached

merge

public static ConfigUpgradePack merge(ArrayList<ConfigUpgradePack> cups)

Merges few config upgrade packs into one and returs result. During merge, a deep copy of AffectedService and AffectedComponent lists is added to resulting config upgrade pack. The only level that is not copied deeply is a list of per-component config changes.

Parameters:

cups - list of source config upgrade packs

Returns:

merged config upgrade pack that is a deep copy of source config upgrade packs