/*
* Licensed to Elastic Search and Shay Banon under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. Elastic Search 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.admin.indices.exists;
import org.elasticsearch.action.ActionListener;
import org.elasticsearch.action.admin.indices.exists.IndicesExistsRequest;
import org.elasticsearch.action.admin.indices.exists.IndicesExistsResponse;
import org.elasticsearch.client.Client;
import org.elasticsearch.common.inject.Inject;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.common.settings.SettingsFilter;
import org.elasticsearch.rest.BaseRestHandler;
import org.elasticsearch.rest.RestChannel;
import org.elasticsearch.rest.RestController;
import org.elasticsearch.rest.RestRequest;
import org.elasticsearch.rest.StringRestResponse;
import static org.elasticsearch.rest.RestRequest.Method.*;
import static org.elasticsearch.rest.RestStatus.*;
import static org.elasticsearch.rest.action.support.RestActions.*;
/**
* @author kimchy (Shay Banon)
*/
public class RestIndicesExistsAction extends BaseRestHandler {
private final SettingsFilter settingsFilter;
@Inject public RestIndicesExistsAction(Settings settings, Client client, RestController controller,
SettingsFilter settingsFilter) {
super(settings, client);
controller.registerHandler(HEAD, "/{index}", this);
this.settingsFilter = settingsFilter;
}
@Override public void handleRequest(final RestRequest request, final RestChannel channel) {
IndicesExistsRequest indicesExistsRequest = new IndicesExistsRequest(splitIndices(request.param("index")));
// we just send back a response, no need to fork a listener
indicesExistsRequest.listenerThreaded(false);
client.admin().indices().exists(indicesExistsRequest, new ActionListener<IndicesExistsResponse>() {
@Override public void onResponse(IndicesExistsResponse response) {
try {
if (response.exists()) {
channel.sendResponse(new StringRestResponse(OK));
} else {
channel.sendResponse(new StringRestResponse(NOT_FOUND));
}
} catch (Exception e) {
onFailure(e);
}
}
@Override public void onFailure(Throwable e) {
try {
channel.sendResponse(new StringRestResponse(INTERNAL_SERVER_ERROR));
} catch (Exception e1) {
logger.error("Failed to send failure response", e1);
}
}
});
}
}