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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.action.admin.indices.cache.clear;
import org.elasticsearch.action.ShardOperationFailedException;
import org.elasticsearch.action.support.ActionFilters;
import org.elasticsearch.action.support.broadcast.node.TransportBroadcastByNodeAction;
import org.elasticsearch.cluster.ClusterService;
import org.elasticsearch.cluster.ClusterState;
import org.elasticsearch.cluster.block.ClusterBlockException;
import org.elasticsearch.cluster.block.ClusterBlockLevel;
import org.elasticsearch.cluster.metadata.IndexNameExpressionResolver;
import org.elasticsearch.cluster.routing.ShardRouting;
import org.elasticsearch.cluster.routing.ShardsIterator;
import org.elasticsearch.common.inject.Inject;
import org.elasticsearch.common.io.stream.StreamInput;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.index.IndexService;
import org.elasticsearch.index.shard.IndexShard;
import org.elasticsearch.indices.IndicesService;
import org.elasticsearch.indices.cache.request.IndicesRequestCache;
import org.elasticsearch.threadpool.ThreadPool;
import org.elasticsearch.transport.TransportService;
import java.io.IOException;
import java.util.List;
/**
* Indices clear cache action.
*/
public class TransportClearIndicesCacheAction extends TransportBroadcastByNodeAction<ClearIndicesCacheRequest, ClearIndicesCacheResponse, TransportBroadcastByNodeAction.EmptyResult> {
private final IndicesService indicesService;
private final IndicesRequestCache indicesRequestCache;
@Inject
public TransportClearIndicesCacheAction(Settings settings, ThreadPool threadPool, ClusterService clusterService,
TransportService transportService, IndicesService indicesService,
IndicesRequestCache indicesQueryCache, ActionFilters actionFilters,
IndexNameExpressionResolver indexNameExpressionResolver) {
super(settings, ClearIndicesCacheAction.NAME, threadPool, clusterService, transportService, actionFilters, indexNameExpressionResolver,
ClearIndicesCacheRequest::new, ThreadPool.Names.MANAGEMENT);
this.indicesService = indicesService;
this.indicesRequestCache = indicesQueryCache;
}
@Override
protected EmptyResult readShardResult(StreamInput in) throws IOException {
return EmptyResult.readEmptyResultFrom(in);
}
@Override
protected ClearIndicesCacheResponse newResponse(ClearIndicesCacheRequest request, int totalShards, int successfulShards, int failedShards, List<EmptyResult> responses, List<ShardOperationFailedException> shardFailures, ClusterState clusterState) {
return new ClearIndicesCacheResponse(totalShards, successfulShards, failedShards, shardFailures);
}
@Override
protected ClearIndicesCacheRequest readRequestFrom(StreamInput in) throws IOException {
final ClearIndicesCacheRequest request = new ClearIndicesCacheRequest();
request.readFrom(in);
return request;
}
@Override
protected EmptyResult shardOperation(ClearIndicesCacheRequest request, ShardRouting shardRouting) {
IndexService service = indicesService.indexService(shardRouting.getIndexName());
if (service != null) {
IndexShard shard = service.getShardOrNull(shardRouting.id());
boolean clearedAtLeastOne = false;
if (request.queryCache()) {
clearedAtLeastOne = true;
service.cache().query().clear("api");
}
if (request.fieldDataCache()) {
clearedAtLeastOne = true;
if (request.fields() == null || request.fields().length == 0) {
service.fieldData().clear();
} else {
for (String field : request.fields()) {
service.fieldData().clearField(field);
}
}
}
if (request.requestCache()) {
clearedAtLeastOne = true;
indicesRequestCache.clear(shard);
}
if (request.recycler()) {
logger.debug("Clear CacheRecycler on index [{}]", service.index());
clearedAtLeastOne = true;
// cacheRecycler.clear();
}
if (!clearedAtLeastOne) {
if (request.fields() != null && request.fields().length > 0) {
// only clear caches relating to the specified fields
for (String field : request.fields()) {
service.fieldData().clearField(field);
}
} else {
service.cache().clear("api");
service.fieldData().clear();
indicesRequestCache.clear(shard);
}
}
}
return EmptyResult.INSTANCE;
}
/**
* The refresh request works against *all* shards.
*/
@Override
protected ShardsIterator shards(ClusterState clusterState, ClearIndicesCacheRequest request, String[] concreteIndices) {
return clusterState.routingTable().allShards(concreteIndices);
}
@Override
protected ClusterBlockException checkGlobalBlock(ClusterState state, ClearIndicesCacheRequest request) {
return state.blocks().globalBlockedException(ClusterBlockLevel.METADATA_WRITE);
}
@Override
protected ClusterBlockException checkRequestBlock(ClusterState state, ClearIndicesCacheRequest request, String[] concreteIndices) {
return state.blocks().indicesBlockedException(ClusterBlockLevel.METADATA_WRITE, concreteIndices);
}
}
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