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Elasticsearch subproject :server
/*
* Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
* or more contributor license agreements. Licensed under the Elastic License
* 2.0 and the Server Side Public License, v 1; you may not use this file except
* in compliance with, at your election, the Elastic License 2.0 or the Server
* Side Public License, v 1.
*/
package org.elasticsearch.rest.action.document;
import org.elasticsearch.action.get.MultiGetRequest;
import org.elasticsearch.client.internal.node.NodeClient;
import org.elasticsearch.common.Strings;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.core.RestApiVersion;
import org.elasticsearch.rest.BaseRestHandler;
import org.elasticsearch.rest.RestRequest;
import org.elasticsearch.rest.action.RestToXContentListener;
import org.elasticsearch.search.fetch.subphase.FetchSourceContext;
import org.elasticsearch.xcontent.XContentParser;
import java.io.IOException;
import java.util.List;
import static org.elasticsearch.rest.RestRequest.Method.GET;
import static org.elasticsearch.rest.RestRequest.Method.POST;
public class RestMultiGetAction extends BaseRestHandler {
public static final String TYPES_DEPRECATION_MESSAGE = "[types removal]" + " Specifying types in multi get requests is deprecated.";
private final boolean allowExplicitIndex;
public RestMultiGetAction(Settings settings) {
this.allowExplicitIndex = MULTI_ALLOW_EXPLICIT_INDEX.get(settings);
}
@Override
public List routes() {
return List.of(
new Route(GET, "/_mget"),
new Route(POST, "/_mget"),
new Route(GET, "/{index}/_mget"),
new Route(POST, "/{index}/_mget"),
Route.builder(GET, "/{index}/{type}/_mget").deprecated(TYPES_DEPRECATION_MESSAGE, RestApiVersion.V_7).build(),
Route.builder(POST, "/{index}/{type}/_mget").deprecated(TYPES_DEPRECATION_MESSAGE, RestApiVersion.V_7).build()
);
}
@Override
public String getName() {
return "document_mget_action";
}
@Override
public RestChannelConsumer prepareRequest(final RestRequest request, final NodeClient client) throws IOException {
if (request.getRestApiVersion() == RestApiVersion.V_7 && request.param("type") != null) {
request.param("type");
}
MultiGetRequest multiGetRequest = new MultiGetRequest();
multiGetRequest.refresh(request.paramAsBoolean("refresh", multiGetRequest.refresh()));
multiGetRequest.preference(request.param("preference"));
multiGetRequest.realtime(request.paramAsBoolean("realtime", multiGetRequest.realtime()));
if (request.param("fields") != null) {
throw new IllegalArgumentException(
"The parameter [fields] is no longer supported, "
+ "please use [stored_fields] to retrieve stored fields or _source filtering if the field is not stored"
);
}
String[] sFields = null;
String sField = request.param("stored_fields");
if (sField != null) {
sFields = Strings.splitStringByCommaToArray(sField);
}
FetchSourceContext defaultFetchSource = FetchSourceContext.parseFromRestRequest(request);
try (XContentParser parser = request.contentOrSourceParamParser()) {
multiGetRequest.add(request.param("index"), sFields, defaultFetchSource, request.param("routing"), parser, allowExplicitIndex);
}
return channel -> client.multiGet(multiGetRequest, new RestToXContentListener<>(channel));
}
}