use of org.elasticsearch.search.aggregations.pipeline.SiblingPipelineAggregator in project elasticsearch by elastic.
the class SearchPhaseController method reduceAggs.
private InternalAggregations reduceAggs(List<InternalAggregations> aggregationsList, List<SiblingPipelineAggregator> pipelineAggregators, ReduceContext reduceContext) {
InternalAggregations aggregations = InternalAggregations.reduce(aggregationsList, reduceContext);
if (pipelineAggregators != null) {
List<InternalAggregation> newAggs = StreamSupport.stream(aggregations.spliterator(), false).map((p) -> (InternalAggregation) p).collect(Collectors.toList());
for (SiblingPipelineAggregator pipelineAggregator : pipelineAggregators) {
InternalAggregation newAgg = pipelineAggregator.doReduce(new InternalAggregations(newAggs), reduceContext);
newAggs.add(newAgg);
}
return new InternalAggregations(newAggs);
}
return aggregations;
}
use of org.elasticsearch.search.aggregations.pipeline.SiblingPipelineAggregator in project elasticsearch by elastic.
the class AggregationPhase method execute.
@Override
public void execute(SearchContext context) {
if (context.aggregations() == null) {
context.queryResult().aggregations(null);
return;
}
if (context.queryResult().hasAggs()) {
// no need to compute the aggs twice, they should be computed on a per context basis
return;
}
Aggregator[] aggregators = context.aggregations().aggregators();
List<Aggregator> globals = new ArrayList<>();
for (int i = 0; i < aggregators.length; i++) {
if (aggregators[i] instanceof GlobalAggregator) {
globals.add(aggregators[i]);
}
}
// optimize the global collector based execution
if (!globals.isEmpty()) {
BucketCollector globalsCollector = BucketCollector.wrap(globals);
Query query = context.buildFilteredQuery(Queries.newMatchAllQuery());
try {
final Collector collector;
if (context.getProfilers() == null) {
collector = globalsCollector;
} else {
InternalProfileCollector profileCollector = new InternalProfileCollector(globalsCollector, CollectorResult.REASON_AGGREGATION_GLOBAL, // TODO: report on sub collectors
Collections.emptyList());
collector = profileCollector;
// start a new profile with this collector
context.getProfilers().addQueryProfiler().setCollector(profileCollector);
}
globalsCollector.preCollection();
context.searcher().search(query, collector);
} catch (Exception e) {
throw new QueryPhaseExecutionException(context, "Failed to execute global aggregators", e);
} finally {
context.clearReleasables(SearchContext.Lifetime.COLLECTION);
}
}
List<InternalAggregation> aggregations = new ArrayList<>(aggregators.length);
for (Aggregator aggregator : context.aggregations().aggregators()) {
try {
aggregator.postCollection();
aggregations.add(aggregator.buildAggregation(0));
} catch (IOException e) {
throw new AggregationExecutionException("Failed to build aggregation [" + aggregator.name() + "]", e);
}
}
context.queryResult().aggregations(new InternalAggregations(aggregations));
try {
List<PipelineAggregator> pipelineAggregators = context.aggregations().factories().createPipelineAggregators();
List<SiblingPipelineAggregator> siblingPipelineAggregators = new ArrayList<>(pipelineAggregators.size());
for (PipelineAggregator pipelineAggregator : pipelineAggregators) {
if (pipelineAggregator instanceof SiblingPipelineAggregator) {
siblingPipelineAggregators.add((SiblingPipelineAggregator) pipelineAggregator);
} else {
throw new AggregationExecutionException("Invalid pipeline aggregation named [" + pipelineAggregator.name() + "] of type [" + pipelineAggregator.getWriteableName() + "]. Only sibling pipeline aggregations are " + "allowed at the top level");
}
}
context.queryResult().pipelineAggregators(siblingPipelineAggregators);
} catch (IOException e) {
throw new AggregationExecutionException("Failed to build top level pipeline aggregators", e);
}
// disable aggregations so that they don't run on next pages in case of scrolling
context.aggregations(null);
context.queryCollectors().remove(AggregationPhase.class);
}
Aggregations