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/*
* Licensed to Elasticsearch under one or more contributor
* license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright
* ownership. Elasticsearch licenses this file to you under
* the Apache License, Version 2.0 (the "License"); you may
* not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.elasticsearch.rest.action.cat;
import org.elasticsearch.ElasticsearchException;
import org.elasticsearch.action.search.SearchRequest;
import org.elasticsearch.action.search.SearchResponse;
import org.elasticsearch.client.node.NodeClient;
import org.elasticsearch.common.Strings;
import org.elasticsearch.common.Table;
import org.elasticsearch.common.inject.Inject;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.index.query.QueryBuilder;
import org.elasticsearch.rest.RestController;
import org.elasticsearch.rest.RestRequest;
import org.elasticsearch.rest.RestResponse;
import org.elasticsearch.rest.action.RestActions;
import org.elasticsearch.rest.action.RestResponseListener;
import org.elasticsearch.search.builder.SearchSourceBuilder;
import java.io.IOException;
import static org.elasticsearch.rest.RestRequest.Method.GET;
public class RestCountAction extends AbstractCatAction {
@Inject
public RestCountAction(Settings settings, RestController restController, RestController controller) {
super(settings);
restController.registerHandler(GET, "/_cat/count", this);
restController.registerHandler(GET, "/_cat/count/{index}", this);
}
@Override
protected void documentation(StringBuilder sb) {
sb.append("/_cat/count\n");
sb.append("/_cat/count/{index}\n");
}
@Override
public RestChannelConsumer doCatRequest(final RestRequest request, final NodeClient client) {
String[] indices = Strings.splitStringByCommaToArray(request.param("index"));
SearchRequest countRequest = new SearchRequest(indices);
SearchSourceBuilder searchSourceBuilder = new SearchSourceBuilder().size(0);
countRequest.source(searchSourceBuilder);
try {
request.withContentOrSourceParamParserOrNull(parser -> {
if (parser == null) {
QueryBuilder queryBuilder = RestActions.urlParamsToQueryBuilder(request);
if (queryBuilder != null) {
searchSourceBuilder.query(queryBuilder);
}
} else {
searchSourceBuilder.query(RestActions.getQueryContent(parser, parseFieldMatcher));
}
});
} catch (IOException e) {
throw new ElasticsearchException("Couldn't parse query", e);
}
return channel -> client.search(countRequest, new RestResponseListener<SearchResponse>(channel) {
@Override
public RestResponse buildResponse(SearchResponse countResponse) throws Exception {
return RestTable.buildResponse(buildTable(request, countResponse), channel);
}
});
}
@Override
protected Table getTableWithHeader(final RestRequest request) {
Table table = new Table();
table.startHeadersWithTimestamp();
table.addCell("count", "alias:dc,docs.count,docsCount;desc:the document count");
table.endHeaders();
return table;
}
private Table buildTable(RestRequest request, SearchResponse response) {
Table table = getTableWithHeader(request);
table.startRow();
table.addCell(response.getHits().totalHits());
table.endRow();
return table;
}
}
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