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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.count;
import org.elasticsearch.action.search.SearchRequest;
import org.elasticsearch.action.search.SearchResponse;
import org.elasticsearch.action.support.IndicesOptions;
import org.elasticsearch.client.Client;
import org.elasticsearch.common.Strings;
import org.elasticsearch.common.bytes.BytesReference;
import org.elasticsearch.common.inject.Inject;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.common.xcontent.XContentBuilder;
import org.elasticsearch.index.query.QueryBuilder;
import org.elasticsearch.indices.query.IndicesQueriesRegistry;
import org.elasticsearch.rest.BaseRestHandler;
import org.elasticsearch.rest.BytesRestResponse;
import org.elasticsearch.rest.RestChannel;
import org.elasticsearch.rest.RestController;
import org.elasticsearch.rest.RestRequest;
import org.elasticsearch.rest.RestResponse;
import org.elasticsearch.rest.action.support.RestActions;
import org.elasticsearch.rest.action.support.RestBuilderListener;
import org.elasticsearch.search.builder.SearchSourceBuilder;
import static org.elasticsearch.rest.RestRequest.Method.GET;
import static org.elasticsearch.rest.RestRequest.Method.POST;
import static org.elasticsearch.rest.action.support.RestActions.buildBroadcastShardsHeader;
import static org.elasticsearch.search.internal.SearchContext.DEFAULT_TERMINATE_AFTER;
/**
*
*/
public class RestCountAction extends BaseRestHandler {
private final IndicesQueriesRegistry indicesQueriesRegistry;
@Inject
public RestCountAction(Settings settings, RestController controller, Client client, IndicesQueriesRegistry indicesQueriesRegistry) {
super(settings, client);
controller.registerHandler(POST, "/_count", this);
controller.registerHandler(GET, "/_count", this);
controller.registerHandler(POST, "/{index}/_count", this);
controller.registerHandler(GET, "/{index}/_count", this);
controller.registerHandler(POST, "/{index}/{type}/_count", this);
controller.registerHandler(GET, "/{index}/{type}/_count", this);
this.indicesQueriesRegistry = indicesQueriesRegistry;
}
@Override
public void handleRequest(final RestRequest request, final RestChannel channel, final Client client) {
SearchRequest countRequest = new SearchRequest(Strings.splitStringByCommaToArray(request.param("index")));
countRequest.indicesOptions(IndicesOptions.fromRequest(request, countRequest.indicesOptions()));
SearchSourceBuilder searchSourceBuilder = new SearchSourceBuilder().size(0);
countRequest.source(searchSourceBuilder);
if (RestActions.hasBodyContent(request)) {
BytesReference restContent = RestActions.getRestContent(request);
searchSourceBuilder.query(RestActions.getQueryContent(restContent, indicesQueriesRegistry, parseFieldMatcher));
} else {
QueryBuilder<?> queryBuilder = RestActions.urlParamsToQueryBuilder(request);
if (queryBuilder != null) {
searchSourceBuilder.query(queryBuilder);
}
}
countRequest.routing(request.param("routing"));
float minScore = request.paramAsFloat("min_score", -1f);
if (minScore != -1f) {
searchSourceBuilder.minScore(minScore);
}
countRequest.types(Strings.splitStringByCommaToArray(request.param("type")));
countRequest.preference(request.param("preference"));
final int terminateAfter = request.paramAsInt("terminate_after", DEFAULT_TERMINATE_AFTER);
if (terminateAfter < 0) {
throw new IllegalArgumentException("terminateAfter must be > 0");
} else if (terminateAfter > 0) {
searchSourceBuilder.terminateAfter(terminateAfter);
}
client.search(countRequest, new RestBuilderListener<SearchResponse>(channel) {
@Override
public RestResponse buildResponse(SearchResponse response, XContentBuilder builder) throws Exception {
builder.startObject();
if (terminateAfter != DEFAULT_TERMINATE_AFTER) {
builder.field("terminated_early", response.isTerminatedEarly());
}
builder.field("count", response.getHits().totalHits());
buildBroadcastShardsHeader(builder, request, response.getTotalShards(), response.getSuccessfulShards(),
response.getFailedShards(), response.getShardFailures());
builder.endObject();
return new BytesRestResponse(response.status(), builder);
}
});
}
}
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