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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.admin.indices.cache.clear.ClearIndicesCacheRequest;
import org.elasticsearch.action.admin.indices.cache.clear.ClearIndicesCacheResponse;
import org.elasticsearch.action.support.IndicesOptions;
import org.elasticsearch.client.Client;
import org.elasticsearch.common.ParseField;
import org.elasticsearch.common.ParseFieldMatcher;
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.BaseRestHandler;
import org.elasticsearch.rest.BytesRestResponse;
import org.elasticsearch.rest.RestChannel;
import org.elasticsearch.rest.RestController;
import org.elasticsearch.rest.RestRequest;
import org.elasticsearch.rest.RestResponse;
import org.elasticsearch.rest.action.support.RestBuilderListener;
import java.util.Map;
import static org.elasticsearch.rest.RestRequest.Method.GET;
import static org.elasticsearch.rest.RestRequest.Method.POST;
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, RestController controller, Client client) {
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, final Client client) {
ClearIndicesCacheRequest clearIndicesCacheRequest = new ClearIndicesCacheRequest(Strings.splitStringByCommaToArray(request.param("index")));
clearIndicesCacheRequest.indicesOptions(IndicesOptions.fromRequest(request, clearIndicesCacheRequest.indicesOptions()));
fromRequest(request, clearIndicesCacheRequest, parseFieldMatcher);
client.admin().indices().clearCache(clearIndicesCacheRequest, new RestBuilderListener<ClearIndicesCacheResponse>(channel) {
@Override
public RestResponse buildResponse(ClearIndicesCacheResponse response, XContentBuilder builder) throws Exception {
builder.startObject();
buildBroadcastShardsHeader(builder, request, response);
builder.endObject();
return new BytesRestResponse(OK, builder);
}
});
}
public static ClearIndicesCacheRequest fromRequest(final RestRequest request, ClearIndicesCacheRequest clearIndicesCacheRequest, ParseFieldMatcher parseFieldMatcher) {
for (Map.Entry<String, String> entry : request.params().entrySet()) {
if (parseFieldMatcher.match(entry.getKey(), Fields.QUERY)) {
clearIndicesCacheRequest.queryCache(request.paramAsBoolean(entry.getKey(), clearIndicesCacheRequest.queryCache()));
}
if (parseFieldMatcher.match(entry.getKey(), Fields.FIELD_DATA)) {
clearIndicesCacheRequest.fieldDataCache(request.paramAsBoolean(entry.getKey(), clearIndicesCacheRequest.fieldDataCache()));
}
if (parseFieldMatcher.match(entry.getKey(), Fields.RECYCLER)) {
clearIndicesCacheRequest.recycler(request.paramAsBoolean(entry.getKey(), clearIndicesCacheRequest.recycler()));
}
if (parseFieldMatcher.match(entry.getKey(), Fields.FIELDS)) {
clearIndicesCacheRequest.fields(request.paramAsStringArray(entry.getKey(), clearIndicesCacheRequest.fields()));
}
}
return clearIndicesCacheRequest;
}
public static class Fields {
public static final ParseField QUERY = new ParseField("query", "filter", "filter_cache");
public static final ParseField FIELD_DATA = new ParseField("field_data", "fielddata");
public static final ParseField RECYCLER = new ParseField("recycler");
public static final ParseField FIELDS = new ParseField("fields");
}
}
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