org.apache.ambari.server.topology

Class ConfigurableHelper

java.lang.Object

org.apache.ambari.server.topology.ConfigurableHelper

public class ConfigurableHelper
extends Object

Helper class for Configurable

Constructor Summary

Constructors

Constructor and Description
ConfigurableHelper()

Method Summary

Modifier and Type	Method and Description
static Collection<Map<String,Map<String,?>>>	convertConfigToMap(Configuration configuration) Converts Configuration objects to a collection easily serializable to Json
static Configuration	parseConfigs(Collection<? extends Map<String,?>> configs) Parses configuration maps The configs can be in fully structured JSON, e.g.
static Map<String,Map<String,String>>	transformAttributesMap(Map<String,Map<String,String>> input) Transform attibutes map from attributeName -> propertyName -> value to propertyName -> attributeName -> value or vice versa

Methods inherited from class java.lang.Object

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

Constructor Detail

ConfigurableHelper

public ConfigurableHelper()

Method Detail

parseConfigs

public static Configuration parseConfigs(@Nullable
                                         Collection<? extends Map<String,?>> configs)

Parses configuration maps The configs can be in fully structured JSON, e.g. [{"hdfs-site": "properties": { ""dfs.replication": "3", ... }, properties_attributes: {} }] or flattened like [{ "hdfs-site/properties/dfs.replication": "3", ... }] In the latter case it calls ConfigurationFactory.getConfiguration(Collection)

convertConfigToMap

public static Collection<Map<String,Map<String,?>>> convertConfigToMap(Configuration configuration)

Converts Configuration objects to a collection easily serializable to Json

Parameters:

configuration - the configuration to convert

Returns:

the resulting collection

transformAttributesMap

public static Map<String,Map<String,String>> transformAttributesMap(Map<String,Map<String,String>> input)

Transform attibutes map from attributeName -> propertyName -> value to propertyName -> attributeName -> value or vice versa

Parameters:

input - the input map

Returns:

the output map