/*
* 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.cache.clear;
import org.elasticsearch.action.ActionListener;
import org.elasticsearch.action.admin.indices.cache.clear.ClearIndicesCacheRequest;
import org.elasticsearch.action.admin.indices.cache.clear.ClearIndicesCacheResponse;
import org.elasticsearch.action.support.broadcast.BroadcastOperationThreading;
import org.elasticsearch.client.Client;
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.rest.RestRequest.Method.*;
import static org.elasticsearch.rest.RestStatus.*;
import static org.elasticsearch.rest.action.support.RestActions.*;
/**
* @author kimchy (Shay Banon)
*/
public class RestClearIndicesCacheAction extends BaseRestHandler {
@Inject public RestClearIndicesCacheAction(Settings settings, Client client, RestController controller) {
super(settings, client);
controller.registerHandler(POST, "/_cache/clear", this);
controller.registerHandler(POST, "/{index}/_cache/clear", this);
controller.registerHandler(GET, "/_cache/clear", this);
controller.registerHandler(GET, "/{index}/_cache/clear", this);
}
@Override public void handleRequest(final RestRequest request, final RestChannel channel) {
ClearIndicesCacheRequest clearIndicesCacheRequest = new ClearIndicesCacheRequest(RestActions.splitIndices(request.param("index")));
try {
clearIndicesCacheRequest.filterCache(request.paramAsBoolean("filter", clearIndicesCacheRequest.filterCache()));
clearIndicesCacheRequest.fieldDataCache(request.paramAsBoolean("field_data", clearIndicesCacheRequest.fieldDataCache()));
clearIndicesCacheRequest.idCache(request.paramAsBoolean("id", clearIndicesCacheRequest.idCache()));
clearIndicesCacheRequest.bloomCache(request.paramAsBoolean("bloom", clearIndicesCacheRequest.bloomCache()));
// we just send back a response, no need to fork a listener
clearIndicesCacheRequest.listenerThreaded(false);
BroadcastOperationThreading operationThreading = BroadcastOperationThreading.fromString(request.param("operationThreading"), BroadcastOperationThreading.SINGLE_THREAD);
if (operationThreading == BroadcastOperationThreading.NO_THREADS) {
// since we don't spawn, don't allow no_threads, but change it to a single thread
operationThreading = BroadcastOperationThreading.THREAD_PER_SHARD;
}
clearIndicesCacheRequest.operationThreading(operationThreading);
} 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.admin().indices().clearCache(clearIndicesCacheRequest, new ActionListener<ClearIndicesCacheResponse>() {
@Override public void onResponse(ClearIndicesCacheResponse response) {
try {
XContentBuilder builder = RestXContentBuilder.restContentBuilder(request);
builder.startObject();
builder.field("ok", true);
buildBroadcastShardsHeader(builder, response);
builder.endObject();
channel.sendResponse(new XContentRestResponse(request, OK, builder));
} catch (Exception 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);
}
}
});
}
}