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| * software distributed under the License is distributed on an * |
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| |
| package org.apache.james.quota.search.elasticsearch.v7; |
| |
| import static org.apache.james.quota.search.elasticsearch.v7.json.JsonMessageConstants.USER; |
| |
| import java.util.List; |
| |
| import org.apache.james.backends.es.v7.AliasName; |
| import org.apache.james.backends.es.v7.ReactorElasticSearchClient; |
| import org.apache.james.backends.es.v7.ReadAliasName; |
| import org.apache.james.backends.es.v7.search.ScrolledSearch; |
| import org.apache.james.core.Username; |
| import org.apache.james.quota.search.QuotaQuery; |
| import org.apache.james.quota.search.QuotaSearcher; |
| import org.elasticsearch.action.search.SearchRequest; |
| import org.elasticsearch.client.RequestOptions; |
| import org.elasticsearch.common.unit.TimeValue; |
| import org.elasticsearch.search.SearchHit; |
| import org.elasticsearch.search.builder.SearchSourceBuilder; |
| import org.elasticsearch.search.sort.SortBuilders; |
| import org.elasticsearch.search.sort.SortOrder; |
| |
| import com.github.steveash.guavate.Guavate; |
| |
| import reactor.core.publisher.Flux; |
| |
| public class ElasticSearchQuotaSearcher implements QuotaSearcher { |
| private static final TimeValue TIMEOUT = TimeValue.timeValueMinutes(1); |
| |
| private final ReactorElasticSearchClient client; |
| private final AliasName readAlias; |
| private final QuotaQueryConverter quotaQueryConverter; |
| |
| public ElasticSearchQuotaSearcher(ReactorElasticSearchClient client, ReadAliasName readAlias) { |
| this.client = client; |
| this.readAlias = readAlias; |
| this.quotaQueryConverter = new QuotaQueryConverter(); |
| } |
| |
| @Override |
| public List<Username> search(QuotaQuery query) { |
| try { |
| return searchHits(query) |
| .map(SearchHit::getId) |
| .map(Username::of) |
| .collect(Guavate.toImmutableList()) |
| .block(); |
| } catch (Exception e) { |
| throw new RuntimeException("Unexpected exception while executing " + query, e); |
| } |
| } |
| |
| private Flux<SearchHit> searchHits(QuotaQuery query) { |
| if (query.getLimit().isLimited()) { |
| return executeSingleSearch(query); |
| } else { |
| return executeScrolledSearch(query); |
| } |
| } |
| |
| private Flux<SearchHit> executeSingleSearch(QuotaQuery query) { |
| SearchSourceBuilder searchSourceBuilder = searchSourceBuilder(query) |
| .from(query.getOffset().getValue()); |
| query.getLimit().getValue() |
| .ifPresent(searchSourceBuilder::size); |
| |
| SearchRequest searchRequest = new SearchRequest(readAlias.getValue()) |
| .source(searchSourceBuilder); |
| |
| return client.search(searchRequest, RequestOptions.DEFAULT) |
| .flatMapMany(searchResponse -> Flux.fromArray(searchResponse.getHits().getHits())); |
| } |
| |
| private Flux<SearchHit> executeScrolledSearch(QuotaQuery query) { |
| return new ScrolledSearch(client, |
| new SearchRequest(readAlias.getValue()) |
| .source(searchSourceBuilder(query)) |
| .scroll(TIMEOUT)) |
| .searchHits() |
| .skip(query.getOffset().getValue()); |
| } |
| |
| private SearchSourceBuilder searchSourceBuilder(QuotaQuery query) { |
| return new SearchSourceBuilder() |
| .query(quotaQueryConverter.from(query)) |
| .sort(SortBuilders.fieldSort(USER).order(SortOrder.ASC)); |
| } |
| } |