org.graylog.plugins.views.search.elasticsearch.searchtypes.pivot.buckets.ESDateRangeHandler Maven / Gradle / Ivy

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/**
 * This file is part of Graylog.
 *
 * Graylog is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * Graylog is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with Graylog.  If not, see .
 */
package org.graylog.plugins.views.search.elasticsearch.searchtypes.pivot.buckets;

import io.searchbox.core.SearchResult;
import io.searchbox.core.search.aggregation.DateRangeAggregation;
import org.elasticsearch.search.aggregations.AggregationBuilder;
import org.elasticsearch.search.aggregations.AggregationBuilders;
import org.elasticsearch.search.aggregations.bucket.range.date.DateRangeAggregationBuilder;
import org.graylog.plugins.views.search.Query;
import org.graylog.plugins.views.search.elasticsearch.ESGeneratedQueryContext;
import org.graylog.plugins.views.search.elasticsearch.searchtypes.pivot.ESPivot;
import org.graylog.plugins.views.search.elasticsearch.searchtypes.pivot.ESPivotBucketSpecHandler;
import org.graylog.plugins.views.search.searchtypes.pivot.Pivot;
import org.graylog.plugins.views.search.searchtypes.pivot.buckets.DateRangeBucket;
import org.joda.time.base.AbstractDateTime;

import javax.annotation.Nonnull;
import java.util.Optional;
import java.util.stream.Stream;

public class ESDateRangeHandler extends ESPivotBucketSpecHandler {
    @Nonnull
    @Override
    public Optional doCreateAggregation(String name, Pivot pivot, DateRangeBucket dateRangeBucket, ESPivot searchTypeHandler, ESGeneratedQueryContext esGeneratedQueryContext, Query query) {
        final DateRangeAggregationBuilder builder = AggregationBuilders.dateRange(name).field(dateRangeBucket.field());
        dateRangeBucket.ranges().forEach(r -> {
            final String from = r.from().map(AbstractDateTime::toString).orElse(null);
            final String to = r.to().map(AbstractDateTime::toString).orElse(null);
            if (from != null && to != null) {
                builder.addRange(from, to);
            } else if (to != null) {
                builder.addUnboundedTo(to);
            } else if (from != null) {
                builder.addUnboundedFrom(from);
            }
        });
        builder.format("date_time");
        builder.keyed(false);
        record(esGeneratedQueryContext, pivot, dateRangeBucket, name, DateRangeAggregation.class);

        return Optional.of(builder);
    }

    @Override
    public Stream doHandleResult(Pivot pivot,
                                         DateRangeBucket dateRangeBucket,
                                         SearchResult searchResult,
                                         DateRangeAggregation rangeAggregation,
                                         ESPivot searchTypeHandler,
                                         ESGeneratedQueryContext esGeneratedQueryContext) {
        if (dateRangeBucket.bucketKey().equals(DateRangeBucket.BucketKey.TO)) {
            return rangeAggregation.getBuckets().stream()
                    .map(range -> Bucket.create(range.getToAsString(), range));
        } else {
            return rangeAggregation.getBuckets().stream()
                    .map(range -> Bucket.create(range.getFromAsString(), range));
        }
    }
}