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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.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.IndicesOptions;
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.RestXContentBuilder;
import java.io.IOException;
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.RestStatus.OK;
import static org.elasticsearch.rest.action.support.RestActions.buildBroadcastShardsHeader;
/**
*
*/
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(Strings.splitStringByCommaToArray(request.param("index")));
clearIndicesCacheRequest.listenerThreaded(false);
clearIndicesCacheRequest.indicesOptions(IndicesOptions.fromRequest(request, clearIndicesCacheRequest.indicesOptions()));
try {
if (request.hasParam("filter")) {
clearIndicesCacheRequest.filterCache(request.paramAsBoolean("filter", clearIndicesCacheRequest.filterCache()));
}
if (request.hasParam("filter_cache")) {
clearIndicesCacheRequest.filterCache(request.paramAsBoolean("filter_cache", clearIndicesCacheRequest.filterCache()));
}
if (request.hasParam("field_data")) {
clearIndicesCacheRequest.fieldDataCache(request.paramAsBoolean("field_data", clearIndicesCacheRequest.fieldDataCache()));
}
if (request.hasParam("fielddata")) {
clearIndicesCacheRequest.fieldDataCache(request.paramAsBoolean("fielddata", clearIndicesCacheRequest.fieldDataCache()));
}
if (request.hasParam("id")) {
clearIndicesCacheRequest.idCache(request.paramAsBoolean("id", clearIndicesCacheRequest.idCache()));
}
if (request.hasParam("id_cache")) {
clearIndicesCacheRequest.idCache(request.paramAsBoolean("id_cache", clearIndicesCacheRequest.idCache()));
}
if (request.hasParam("recycler")) {
clearIndicesCacheRequest.recycler(request.paramAsBoolean("recycler", clearIndicesCacheRequest.recycler()));
}
clearIndicesCacheRequest.fields(request.paramAsStringArray("fields", clearIndicesCacheRequest.fields()));
clearIndicesCacheRequest.filterKeys(request.paramAsStringArray("filter_keys", clearIndicesCacheRequest.filterKeys()));
BroadcastOperationThreading operationThreading = BroadcastOperationThreading.fromString(request.param("operationThreading"), 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.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() {
@Override
public void onResponse(ClearIndicesCacheResponse response) {
try {
XContentBuilder builder = RestXContentBuilder.restContentBuilder(request);
builder.startObject();
buildBroadcastShardsHeader(builder, response);
builder.endObject();
channel.sendResponse(new XContentRestResponse(request, OK, 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);
}
}
});
}
}