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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
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package org.elasticsearch.rest.action.admin.indices.settings;
import com.carrotsearch.hppc.cursors.ObjectObjectCursor;
import org.elasticsearch.action.admin.indices.settings.get.GetSettingsRequest;
import org.elasticsearch.action.admin.indices.settings.get.GetSettingsResponse;
import org.elasticsearch.action.support.IndicesOptions;
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.common.xcontent.XContentBuilderString;
import org.elasticsearch.rest.*;
import org.elasticsearch.rest.action.support.RestBuilderListener;
import static org.elasticsearch.rest.RestRequest.Method.GET;
import static org.elasticsearch.rest.RestStatus.OK;
public class RestGetSettingsAction extends BaseRestHandler {
@Inject
public RestGetSettingsAction(Settings settings, RestController controller, Client client) {
super(settings, controller, client);
controller.registerHandler(GET, "/{index}/_settings/{name}", this);
controller.registerHandler(GET, "/_settings/{name}", this);
controller.registerHandler(GET, "/{index}/_setting/{name}", this);
}
@Override
public void handleRequest(final RestRequest request, final RestChannel channel, final Client client) {
final String[] names = request.paramAsStringArrayOrEmptyIfAll("name");
GetSettingsRequest getSettingsRequest = new GetSettingsRequest()
.indices(Strings.splitStringByCommaToArray(request.param("index")))
.indicesOptions(IndicesOptions.fromRequest(request, IndicesOptions.strictExpandOpen()))
.names(names);
getSettingsRequest.local(request.paramAsBoolean("local", getSettingsRequest.local()));
client.admin().indices().getSettings(getSettingsRequest, new RestBuilderListener<GetSettingsResponse>(channel) {
@Override
public RestResponse buildResponse(GetSettingsResponse getSettingsResponse, XContentBuilder builder) throws Exception {
builder.startObject();
for (ObjectObjectCursor<String, Settings> cursor : getSettingsResponse.getIndexToSettings()) {
// no settings, jump over it to shorten the response data
if (cursor.value.getAsMap().isEmpty()) {
continue;
}
builder.startObject(cursor.key, XContentBuilder.FieldCaseConversion.NONE);
builder.startObject(Fields.SETTINGS);
cursor.value.toXContent(builder, request);
builder.endObject();
builder.endObject();
}
builder.endObject();
return new BytesRestResponse(OK, builder);
}
});
}
static class Fields {
static final XContentBuilderString SETTINGS = new XContentBuilderString("settings");
}
}