org.apache.ambari.server.state

Class CheckHelper

java.lang.Object

org.apache.ambari.server.state.CheckHelper

public class CheckHelper
extends Object

Field Summary

Fields

Modifier and Type	Field and Description
protected com.google.inject.Provider<Clusters>	clustersProvider Used for retrieving Cluster instances.
protected com.google.inject.Provider<AmbariMetaInfo>	metaInfoProvider
protected com.google.inject.Provider<RepositoryVersionDAO>	repositoryVersionDaoProvider Used for retrieving RepositoryVersionEntity instances.

Constructor Summary

Constructors

Constructor and Description
CheckHelper()

Method Summary

Modifier and Type	Method and Description
List<org.apache.ambari.spi.upgrade.UpgradeCheck>	getApplicableChecks(org.apache.ambari.spi.upgrade.UpgradeCheckRequest request, List<org.apache.ambari.spi.upgrade.UpgradeCheck> upgradeChecks) Gets any UpgradeChecks which have passed all of their CheckQualifications for the given upgrade request.
Set<String>	getServicesInUpgrade(org.apache.ambari.spi.upgrade.UpgradeCheckRequest request) Gets the services participating in the upgrade from the VDF.
VersionDefinitionXml	getVersionDefinitionXml(org.apache.ambari.spi.upgrade.UpgradeCheckRequest request) Gets a de-serialized VersionDefinitionXml from the repository for this upgrade.
List<org.apache.ambari.spi.upgrade.UpgradeCheckResult>	performChecks(org.apache.ambari.spi.upgrade.UpgradeCheckRequest request, List<org.apache.ambari.spi.upgrade.UpgradeCheck> upgradeChecks, Configuration config) Executes all registered pre-requisite checks.

Methods inherited from class java.lang.Object

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

Field Detail

repositoryVersionDaoProvider

@Inject
protected com.google.inject.Provider<RepositoryVersionDAO> repositoryVersionDaoProvider

Used for retrieving RepositoryVersionEntity instances.

clustersProvider

@Inject
protected com.google.inject.Provider<Clusters> clustersProvider

Used for retrieving Cluster instances.

metaInfoProvider

@Inject
protected com.google.inject.Provider<AmbariMetaInfo> metaInfoProvider

Constructor Detail

CheckHelper

public CheckHelper()

Method Detail

getApplicableChecks

public List<org.apache.ambari.spi.upgrade.UpgradeCheck> getApplicableChecks(org.apache.ambari.spi.upgrade.UpgradeCheckRequest request,
                                                                            List<org.apache.ambari.spi.upgrade.UpgradeCheck> upgradeChecks)

Gets any UpgradeChecks which have passed all of their CheckQualifications for the given upgrade request.

Parameters:

request -

upgradeChecks -

Returns:

performChecks

public List<org.apache.ambari.spi.upgrade.UpgradeCheckResult> performChecks(org.apache.ambari.spi.upgrade.UpgradeCheckRequest request,
                                                                            List<org.apache.ambari.spi.upgrade.UpgradeCheck> upgradeChecks,
                                                                            Configuration config)

Executes all registered pre-requisite checks.

Parameters:

request - pre-requisite check request

Returns:

list of pre-requisite check results

getVersionDefinitionXml

public final VersionDefinitionXml getVersionDefinitionXml(org.apache.ambari.spi.upgrade.UpgradeCheckRequest request)
                                                   throws org.apache.ambari.server.AmbariException

Gets a de-serialized VersionDefinitionXml from the repository for this upgrade.

Parameters:

request - the upgrade check request.

Returns:

the VDF XML

Throws:

org.apache.ambari.server.AmbariException

getServicesInUpgrade

public final Set<String> getServicesInUpgrade(org.apache.ambari.spi.upgrade.UpgradeCheckRequest request)
                                       throws org.apache.ambari.server.AmbariException

Gets the services participating in the upgrade from the VDF.

Parameters:

request - the upgrade check request.

Returns:

the services participating in the upgrade, which can either be all of the cluster's services or a subset based on repository type.

Throws:

org.apache.ambari.server.AmbariException