org.apache.ambari.server.controller.internal

Class BlueprintConfigurationProcessor.MultipleHostTopologyUpdater

java.lang.Object

org.apache.ambari.server.controller.internal.BlueprintConfigurationProcessor.MultipleHostTopologyUpdater

All Implemented Interfaces:

BlueprintConfigurationProcessor.PropertyUpdater

Enclosing class:

BlueprintConfigurationProcessor

protected static class BlueprintConfigurationProcessor.MultipleHostTopologyUpdater
extends Object
implements BlueprintConfigurationProcessor.PropertyUpdater

Topology based updater which replaces original host names (possibly more than one) contained in a property value with the host names which runs the associated component in the new cluster.

Constructor Summary

Constructors

Constructor and Description
MultipleHostTopologyUpdater(String component) Constructor.
MultipleHostTopologyUpdater(String component, Character separator, boolean usePrefixForEachHost, boolean useSuffixForEachHost, boolean usePortForEachHost) Constructor

Method Summary

Modifier and Type	Method and Description
Collection<String>	getRequiredHostGroups(String propertyName, String origValue, Map<String,Map<String,String>> properties, ClusterTopology topology) Determine the required host groups for the provided property.
protected String	resolveHostGroupPlaceholder(String originalValue, Collection<String> hostStrings) Resolves the host group place holders in the passed in original value.
String	updateForClusterCreate(String propertyName, String origValue, Map<String,Map<String,String>> properties, ClusterTopology topology) Update all host names included in the original property value with new host names which run the associated component.

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.ambari.server.controller.internal.BlueprintConfigurationProcessor.PropertyUpdater

defaultUpdater, updateForBlueprintExport

Constructor Detail

MultipleHostTopologyUpdater

public MultipleHostTopologyUpdater(String component)

Constructor.

Parameters:

component - component name associated with the property

MultipleHostTopologyUpdater

public MultipleHostTopologyUpdater(String component,
                                   Character separator,
                                   boolean usePrefixForEachHost,
                                   boolean useSuffixForEachHost,
                                   boolean usePortForEachHost)

Constructor

Parameters:

component - component name associated with this property

separator - the separator character to use when multiple hosts are specified in a property or URL

Method Detail

updateForClusterCreate

public String updateForClusterCreate(String propertyName,
                                     String origValue,
                                     Map<String,Map<String,String>> properties,
                                     ClusterTopology topology)

Update all host names included in the original property value with new host names which run the associated component.

Specified by:

updateForClusterCreate in interface BlueprintConfigurationProcessor.PropertyUpdater

Parameters:

propertyName - property name

origValue - original value of property

properties - all properties

topology - cluster topology

Returns:

updated property value with old host names replaced by new host names

resolveHostGroupPlaceholder

protected String resolveHostGroupPlaceholder(String originalValue,
                                             Collection<String> hostStrings)

Resolves the host group place holders in the passed in original value.

Parameters:

originalValue - The original value containing the place holders to be resolved.

hostStrings - The collection of host names that are mapped to the host groups to be resolved

Returns:

The new value with place holders resolved.

getRequiredHostGroups

public Collection<String> getRequiredHostGroups(String propertyName,
                                                String origValue,
                                                Map<String,Map<String,String>> properties,
                                                ClusterTopology topology)

Description copied from interface: BlueprintConfigurationProcessor.PropertyUpdater

Determine the required host groups for the provided property.

Specified by:

getRequiredHostGroups in interface BlueprintConfigurationProcessor.PropertyUpdater

Parameters:

propertyName - property name

origValue - original value of property

properties - all properties

topology - cluster topology

Returns:

new property value