org.apache.druid.client

Class DataSourcesSnapshot

java.lang.Object

org.apache.druid.client.DataSourcesSnapshot

public class DataSourcesSnapshot
extends Object

An immutable snapshot of metadata information about used segments and overshadowed segments, coming from SqlSegmentsMetadataManager.

Constructor Summary

Constructors

Constructor and Description
DataSourcesSnapshot(Map<String,ImmutableDruidDataSource> dataSourcesWithAllUsedSegments)

Method Summary

Modifier and Type	Method and Description
static DataSourcesSnapshot	fromUsedSegments(Iterable<DataSegment> segments, com.google.common.collect.ImmutableMap<String,String> dataSourceProperties)
static DataSourcesSnapshot	fromUsedSegmentsTimelines(Map<String,VersionedIntervalTimeline<String,DataSegment>> usedSegmentsTimelinesPerDataSource, com.google.common.collect.ImmutableMap<String,String> dataSourceProperties)
ImmutableDruidDataSource	getDataSource(String dataSourceName)
Map<String,ImmutableDruidDataSource>	getDataSourcesMap()
Collection<ImmutableDruidDataSource>	getDataSourcesWithAllUsedSegments()
com.google.common.collect.ImmutableSet<SegmentId>	getOvershadowedSegments()
Map<String,VersionedIntervalTimeline<String,DataSegment>>	getUsedSegmentsTimelinesPerDataSource()
Iterable<DataSegment>	iterateAllUsedSegmentsInSnapshot() Returns an iterable to go over all used segments in all data sources.

Methods inherited from class java.lang.Object

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

Constructor Detail

DataSourcesSnapshot

public DataSourcesSnapshot(Map<String,ImmutableDruidDataSource> dataSourcesWithAllUsedSegments)

Method Detail

fromUsedSegments

public static DataSourcesSnapshot fromUsedSegments(Iterable<DataSegment> segments,
                                                   com.google.common.collect.ImmutableMap<String,String> dataSourceProperties)

fromUsedSegmentsTimelines

public static DataSourcesSnapshot fromUsedSegmentsTimelines(Map<String,VersionedIntervalTimeline<String,DataSegment>> usedSegmentsTimelinesPerDataSource,
                                                            com.google.common.collect.ImmutableMap<String,String> dataSourceProperties)

getDataSourcesWithAllUsedSegments

public Collection<ImmutableDruidDataSource> getDataSourcesWithAllUsedSegments()

getDataSourcesMap

public Map<String,ImmutableDruidDataSource> getDataSourcesMap()

getDataSource

@Nullable
public ImmutableDruidDataSource getDataSource(String dataSourceName)

getUsedSegmentsTimelinesPerDataSource

public Map<String,VersionedIntervalTimeline<String,DataSegment>> getUsedSegmentsTimelinesPerDataSource()

getOvershadowedSegments

public com.google.common.collect.ImmutableSet<SegmentId> getOvershadowedSegments()

iterateAllUsedSegmentsInSnapshot

public Iterable<DataSegment> iterateAllUsedSegmentsInSnapshot()

Returns an iterable to go over all used segments in all data sources. The order in which segments are iterated is unspecified. Note: the iteration may not be as trivially cheap as, for example, iteration over an ArrayList. Try (to some reasonable extent) to organize the code so that it iterates the returned iterable only once rather than several times. This method's name starts with "iterate" because the result is expected to be consumed immediately in a for-each statement or a stream pipeline, like for (DataSegment segment : snapshot.iterateAllUsedSegmentsInSnapshot()) {...}