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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.ActionListener;
import org.elasticsearch.action.count.CountRequest;
import org.elasticsearch.action.count.CountResponse;
import org.elasticsearch.action.support.IndicesOptions;
import org.elasticsearch.action.support.QuerySourceBuilder;
import org.elasticsearch.action.support.broadcast.BroadcastOperationThreading;
import org.elasticsearch.client.Client;
import org.elasticsearch.common.Strings;
import org.elasticsearch.common.inject.Inject;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.common.xcontent.XContentBuilder;
import org.elasticsearch.rest.*;
import org.elasticsearch.rest.action.support.RestActions;
import org.elasticsearch.rest.action.support.RestXContentBuilder;
import java.io.IOException;
import static org.elasticsearch.action.count.CountRequest.DEFAULT_MIN_SCORE;
import static org.elasticsearch.rest.RestRequest.Method.GET;
import static org.elasticsearch.rest.RestRequest.Method.POST;
import static org.elasticsearch.rest.RestStatus.BAD_REQUEST;
import static org.elasticsearch.rest.action.support.RestActions.buildBroadcastShardsHeader;
/**
*
*/
public class RestCountAction extends BaseRestHandler {
@Inject
public RestCountAction(Settings settings, Client client, RestController controller) {
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);
}
@Override
public void handleRequest(final RestRequest request, final RestChannel channel) {
CountRequest countRequest = new CountRequest(Strings.splitStringByCommaToArray(request.param("index")));
countRequest.indicesOptions(IndicesOptions.fromRequest(request, countRequest.indicesOptions()));
countRequest.listenerThreaded(false);
try {
BroadcastOperationThreading operationThreading = BroadcastOperationThreading.fromString(request.param("operation_threading"), BroadcastOperationThreading.THREAD_PER_SHARD);
if (operationThreading == BroadcastOperationThreading.NO_THREADS) {
// since we don't spawn, don't allow no_threads, but change it to a single thread
operationThreading = BroadcastOperationThreading.SINGLE_THREAD;
}
countRequest.operationThreading(operationThreading);
if (request.hasContent()) {
countRequest.source(request.content(), request.contentUnsafe());
} else {
String source = request.param("source");
if (source != null) {
countRequest.source(source);
} else {
QuerySourceBuilder querySourceBuilder = RestActions.parseQuerySource(request);
if (querySourceBuilder != null) {
countRequest.source(querySourceBuilder);
}
}
}
countRequest.routing(request.param("routing"));
countRequest.minScore(request.paramAsFloat("min_score", DEFAULT_MIN_SCORE));
countRequest.types(Strings.splitStringByCommaToArray(request.param("type")));
countRequest.preference(request.param("preference"));
} catch (Exception e) {
try {
XContentBuilder builder = RestXContentBuilder.restContentBuilder(request);
channel.sendResponse(new XContentRestResponse(request, BAD_REQUEST, builder.startObject().field("error", e.getMessage()).endObject()));
} catch (IOException e1) {
logger.error("Failed to send failure response", e1);
}
return;
}
client.count(countRequest, new ActionListener() {
@Override
public void onResponse(CountResponse response) {
try {
XContentBuilder builder = RestXContentBuilder.restContentBuilder(request);
builder.startObject();
builder.field("count", response.getCount());
buildBroadcastShardsHeader(builder, response);
builder.endObject();
channel.sendResponse(new XContentRestResponse(request, response.status(), builder));
} catch (Throwable e) {
onFailure(e);
}
}
@Override
public void onFailure(Throwable e) {
try {
channel.sendResponse(new XContentThrowableRestResponse(request, e));
} catch (IOException e1) {
logger.error("Failed to send failure response", e1);
}
}
});
}
}