org.apache.ambari.server.controller.internal

Class StackDefinedPropertyProvider

java.lang.Object

org.apache.ambari.server.controller.internal.StackDefinedPropertyProvider

All Implemented Interfaces:

PropertyProvider

public class StackDefinedPropertyProvider
extends Object
implements PropertyProvider

This class analyzes a service's metrics to determine if additional metrics should be fetched. It's okay to maintain state here since these are done per-request.

Field Summary

Fields

Modifier and Type	Field and Description
static String	WRAPPED_METRICS_KEY PropertyHelper/AbstractPropertyProvider expect map of maps, that's why we wrap metrics into map

Constructor Summary

Constructors

Constructor and Description
StackDefinedPropertyProvider(Resource.Type type, JMXHostProvider jmxHostProvider, MetricHostProvider metricHostProvider, MetricsServiceProvider serviceProvider, URLStreamProvider streamProvider, String clusterPropertyId, String hostPropertyId, String componentPropertyId, String resourceStatePropertyId, PropertyProvider defaultJmxPropertyProvider, PropertyProvider defaultGangliaPropertyProvider)

Method Summary

Modifier and Type	Method and Description
Set<String>	checkPropertyIds(Set<String> propertyIds) Check whether the set of given property ids is supported by this resource provider.
static Map<String,PropertyInfo>	getPropertyInfo(MetricDefinition def)
static void	init(com.google.inject.Injector injector)
Set<Resource>	populateResources(Set<Resource> resources, Request request, Predicate predicate) Populate the given set of resource with any properties that this property provider can provide and return a populated set of resources.

Methods inherited from class java.lang.Object

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

Field Detail

WRAPPED_METRICS_KEY

public static final String WRAPPED_METRICS_KEY

PropertyHelper/AbstractPropertyProvider expect map of maps, that's why we wrap metrics into map

See Also:

Constant Field Values

Constructor Detail

StackDefinedPropertyProvider

public StackDefinedPropertyProvider(Resource.Type type,
                                    JMXHostProvider jmxHostProvider,
                                    MetricHostProvider metricHostProvider,
                                    MetricsServiceProvider serviceProvider,
                                    URLStreamProvider streamProvider,
                                    String clusterPropertyId,
                                    String hostPropertyId,
                                    String componentPropertyId,
                                    String resourceStatePropertyId,
                                    PropertyProvider defaultJmxPropertyProvider,
                                    PropertyProvider defaultGangliaPropertyProvider)

Method Detail

init

@Inject
public static void init(com.google.inject.Injector injector)

populateResources

public Set<Resource> populateResources(Set<Resource> resources,
                                       Request request,
                                       Predicate predicate)
                                throws SystemException

Description copied from interface: PropertyProvider

Populate the given set of resource with any properties that this property provider can provide and return a populated set of resources. The provider may drop resources from the original set if it determines that the don't meet the conditions of the predicate.

Specified by:

populateResources in interface PropertyProvider

Parameters:

resources - the resources to be populated

request - the request object which defines the desired set of properties

predicate - the predicate object which filters which resources are returned

Returns:

the populated set of resources

Throws:

SystemException - thrown if resources cannot be populated

checkPropertyIds

public Set<String> checkPropertyIds(Set<String> propertyIds)

Description copied from interface: PropertyProvider

Check whether the set of given property ids is supported by this resource provider.

Specified by:

checkPropertyIds in interface PropertyProvider

Returns:

a subset of the given property id set containing any property ids not supported by this resource provider. An empty return set indicates that all of the given property ids are supported.

getPropertyInfo

public static Map<String,PropertyInfo> getPropertyInfo(MetricDefinition def)

Parameters:

def - the metric definition

Returns:

the converted Map required for JMX or Ganglia execution. Format: