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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.indices.store;
import com.google.common.collect.Lists;
import org.elasticsearch.ElasticsearchException;
import org.elasticsearch.action.ActionListener;
import org.elasticsearch.action.FailedNodeException;
import org.elasticsearch.action.support.ActionFilters;
import org.elasticsearch.action.support.nodes.*;
import org.elasticsearch.cluster.ClusterName;
import org.elasticsearch.cluster.ClusterService;
import org.elasticsearch.cluster.ClusterState;
import org.elasticsearch.cluster.metadata.IndexMetaData;
import org.elasticsearch.cluster.node.DiscoveryNode;
import org.elasticsearch.common.inject.Inject;
import org.elasticsearch.common.io.stream.StreamInput;
import org.elasticsearch.common.io.stream.StreamOutput;
import org.elasticsearch.common.io.stream.Streamable;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.common.unit.TimeValue;
import org.elasticsearch.env.NodeEnvironment;
import org.elasticsearch.gateway.AsyncShardFetch;
import org.elasticsearch.index.IndexService;
import org.elasticsearch.index.shard.IndexShard;
import org.elasticsearch.index.shard.ShardId;
import org.elasticsearch.index.store.Store;
import org.elasticsearch.index.store.StoreFileMetaData;
import org.elasticsearch.indices.IndicesService;
import org.elasticsearch.threadpool.ThreadPool;
import org.elasticsearch.transport.TransportService;
import java.io.File;
import java.io.IOException;
import java.util.Iterator;
import java.util.List;
import java.util.Set;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.atomic.AtomicReferenceArray;
/**
*
*/
public class TransportNodesListShardStoreMetaData extends TransportNodesOperationAction
implements AsyncShardFetch.List {
public static final String ACTION_NAME = "internal:cluster/nodes/indices/shard/store";
private final IndicesService indicesService;
private final NodeEnvironment nodeEnv;
@Inject
public TransportNodesListShardStoreMetaData(Settings settings, ClusterName clusterName, ThreadPool threadPool, ClusterService clusterService, TransportService transportService,
IndicesService indicesService, NodeEnvironment nodeEnv, ActionFilters actionFilters) {
super(settings, ACTION_NAME, clusterName, threadPool, clusterService, transportService, actionFilters);
this.indicesService = indicesService;
this.nodeEnv = nodeEnv;
}
@Override
public void list(ShardId shardId, IndexMetaData indexMetaData, String[] nodesIds, ActionListener listener) {
execute(new Request(shardId, false, nodesIds), listener);
}
@Override
protected String executor() {
return ThreadPool.Names.FETCH_SHARD_STORE;
}
@Override
protected Request newRequest() {
return new Request();
}
@Override
protected NodeRequest newNodeRequest() {
return new NodeRequest();
}
@Override
protected String[] resolveNodes(Request request, ClusterState clusterState) {
// default implementation may filter out non existent nodes. it's important to keep exactly the ids
// we were given for accounting on the caller
return request.nodesIds();
}
@Override
protected NodeRequest newNodeRequest(String nodeId, Request request) {
return new NodeRequest(nodeId, request);
}
@Override
protected NodeStoreFilesMetaData newNodeResponse() {
return new NodeStoreFilesMetaData();
}
@Override
protected NodesStoreFilesMetaData newResponse(Request request, AtomicReferenceArray responses) {
final List nodeStoreFilesMetaDatas = Lists.newArrayList();
final List failures = Lists.newArrayList();
for (int i = 0; i < responses.length(); i++) {
Object resp = responses.get(i);
if (resp instanceof NodeStoreFilesMetaData) { // will also filter out null response for unallocated ones
nodeStoreFilesMetaDatas.add((NodeStoreFilesMetaData) resp);
} else if (resp instanceof FailedNodeException) {
failures.add((FailedNodeException) resp);
} else {
logger.warn("unknown response type [{}], expected NodeStoreFilesMetaData or FailedNodeException", resp);
}
}
return new NodesStoreFilesMetaData(clusterName, nodeStoreFilesMetaDatas.toArray(new NodeStoreFilesMetaData[nodeStoreFilesMetaDatas.size()]),
failures.toArray(new FailedNodeException[failures.size()]));
}
@Override
protected NodeStoreFilesMetaData nodeOperation(NodeRequest request) throws ElasticsearchException {
if (request.unallocated) {
IndexService indexService = indicesService.indexService(request.shardId.index().name());
if (indexService == null) {
return new NodeStoreFilesMetaData(clusterService.localNode(), null);
}
if (!indexService.hasShard(request.shardId.id())) {
return new NodeStoreFilesMetaData(clusterService.localNode(), null);
}
}
IndexMetaData metaData = clusterService.state().metaData().index(request.shardId.index().name());
if (metaData == null) {
return new NodeStoreFilesMetaData(clusterService.localNode(), null);
}
try {
return new NodeStoreFilesMetaData(clusterService.localNode(), listStoreMetaData(request.shardId));
} catch (IOException e) {
throw new ElasticsearchException("Failed to list store metadata for shard [" + request.shardId + "]", e);
}
}
private StoreFilesMetaData listStoreMetaData(ShardId shardId) throws IOException {
logger.trace("listing store meta data for {}", shardId);
long startTimeNS = System.nanoTime();
boolean exists = false;
try {
IndexService indexService = indicesService.indexService(shardId.index().name());
if (indexService != null) {
IndexShard indexShard = indexService.shard(shardId.id());
if (indexShard != null) {
final Store store = indexShard.store();
store.incRef();
try {
exists = true;
return new StoreFilesMetaData(true, shardId, store.getMetadataOrEmpty());
} finally {
store.decRef();
}
}
}
// try and see if we an list unallocated
IndexMetaData metaData = clusterService.state().metaData().index(shardId.index().name());
if (metaData == null) {
return new StoreFilesMetaData(false, shardId, Store.MetadataSnapshot.EMPTY);
}
String storeType = metaData.settings().get("index.store.type", "fs");
if (!storeType.contains("fs")) {
return new StoreFilesMetaData(false, shardId, Store.MetadataSnapshot.EMPTY);
}
File[] shardLocations = nodeEnv.shardDataLocations(shardId, metaData.settings());
File[] shardIndexLocations = new File[shardLocations.length];
for (int i = 0; i < shardLocations.length; i++) {
shardIndexLocations[i] = new File(shardLocations[i], "index");
}
for (File shardIndexLocation : shardIndexLocations) {
if (shardIndexLocation.exists()) {
exists = true;
break;
}
}
if (!exists) {
return new StoreFilesMetaData(false, shardId, Store.MetadataSnapshot.EMPTY);
}
return new StoreFilesMetaData(false, shardId, Store.readMetadataSnapshot(shardIndexLocations, logger));
} finally {
TimeValue took = new TimeValue(System.nanoTime() - startTimeNS, TimeUnit.NANOSECONDS);
if (exists) {
logger.debug("{} loaded store meta data (took [{}])", shardId, took);
} else {
logger.trace("{} didn't find any store meta data to load (took [{}])", shardId, took);
}
}
}
@Override
protected boolean accumulateExceptions() {
return true;
}
public static class StoreFilesMetaData implements Iterable, Streamable {
// here also trasmit sync id, else recovery will not use sync id because of stupid gateway allocator every now and then...
private boolean allocated;
private ShardId shardId;
Store.MetadataSnapshot metadataSnapshot;
StoreFilesMetaData() {
}
public StoreFilesMetaData(boolean allocated, ShardId shardId, Store.MetadataSnapshot metadataSnapshot) {
this.allocated = allocated;
this.shardId = shardId;
this.metadataSnapshot = metadataSnapshot;
}
public boolean allocated() {
return allocated;
}
public ShardId shardId() {
return this.shardId;
}
public long totalSizeInBytes() {
long totalSizeInBytes = 0;
for (StoreFileMetaData file : this) {
totalSizeInBytes += file.length();
}
return totalSizeInBytes;
}
@Override
public Iterator iterator() {
return metadataSnapshot.iterator();
}
public boolean fileExists(String name) {
return metadataSnapshot.asMap().containsKey(name);
}
public StoreFileMetaData file(String name) {
return metadataSnapshot.asMap().get(name);
}
public static StoreFilesMetaData readStoreFilesMetaData(StreamInput in) throws IOException {
StoreFilesMetaData md = new StoreFilesMetaData();
md.readFrom(in);
return md;
}
@Override
public void readFrom(StreamInput in) throws IOException {
allocated = in.readBoolean();
shardId = ShardId.readShardId(in);
this.metadataSnapshot = new Store.MetadataSnapshot(in);
}
@Override
public void writeTo(StreamOutput out) throws IOException {
out.writeBoolean(allocated);
shardId.writeTo(out);
metadataSnapshot.writeTo(out);
}
/**
* @return commit sync id if exists, else null
*/
public String syncId() {
return metadataSnapshot.getSyncId();
}
}
static class Request extends NodesOperationRequest {
private ShardId shardId;
private boolean unallocated;
public Request() {
}
public Request(ShardId shardId, boolean unallocated, Set nodesIds) {
super(nodesIds.toArray(new String[nodesIds.size()]));
this.shardId = shardId;
this.unallocated = unallocated;
}
public Request(ShardId shardId, boolean unallocated, String... nodesIds) {
super(nodesIds);
this.shardId = shardId;
this.unallocated = unallocated;
}
@Override
public void readFrom(StreamInput in) throws IOException {
super.readFrom(in);
shardId = ShardId.readShardId(in);
unallocated = in.readBoolean();
}
@Override
public void writeTo(StreamOutput out) throws IOException {
super.writeTo(out);
shardId.writeTo(out);
out.writeBoolean(unallocated);
}
}
public static class NodesStoreFilesMetaData extends NodesOperationResponse {
private FailedNodeException[] failures;
NodesStoreFilesMetaData() {
}
public NodesStoreFilesMetaData(ClusterName clusterName, NodeStoreFilesMetaData[] nodes, FailedNodeException[] failures) {
super(clusterName, nodes);
this.failures = failures;
}
@Override
public FailedNodeException[] failures() {
return failures;
}
@Override
public void readFrom(StreamInput in) throws IOException {
super.readFrom(in);
nodes = new NodeStoreFilesMetaData[in.readVInt()];
for (int i = 0; i < nodes.length; i++) {
nodes[i] = NodeStoreFilesMetaData.readListShardStoreNodeOperationResponse(in);
}
}
@Override
public void writeTo(StreamOutput out) throws IOException {
super.writeTo(out);
out.writeVInt(nodes.length);
for (NodeStoreFilesMetaData response : nodes) {
response.writeTo(out);
}
}
}
static class NodeRequest extends NodeOperationRequest {
private ShardId shardId;
private boolean unallocated;
NodeRequest() {
}
NodeRequest(String nodeId, TransportNodesListShardStoreMetaData.Request request) {
super(request, nodeId);
this.shardId = request.shardId;
this.unallocated = request.unallocated;
}
@Override
public void readFrom(StreamInput in) throws IOException {
super.readFrom(in);
shardId = ShardId.readShardId(in);
unallocated = in.readBoolean();
}
@Override
public void writeTo(StreamOutput out) throws IOException {
super.writeTo(out);
shardId.writeTo(out);
out.writeBoolean(unallocated);
}
}
public static class NodeStoreFilesMetaData extends NodeOperationResponse {
private StoreFilesMetaData storeFilesMetaData;
NodeStoreFilesMetaData() {
}
public NodeStoreFilesMetaData(DiscoveryNode node, StoreFilesMetaData storeFilesMetaData) {
super(node);
this.storeFilesMetaData = storeFilesMetaData;
}
public StoreFilesMetaData storeFilesMetaData() {
return storeFilesMetaData;
}
public static NodeStoreFilesMetaData readListShardStoreNodeOperationResponse(StreamInput in) throws IOException {
NodeStoreFilesMetaData resp = new NodeStoreFilesMetaData();
resp.readFrom(in);
return resp;
}
@Override
public void readFrom(StreamInput in) throws IOException {
super.readFrom(in);
if (in.readBoolean()) {
storeFilesMetaData = StoreFilesMetaData.readStoreFilesMetaData(in);
}
}
@Override
public void writeTo(StreamOutput out) throws IOException {
super.writeTo(out);
if (storeFilesMetaData == null) {
out.writeBoolean(false);
} else {
out.writeBoolean(true);
storeFilesMetaData.writeTo(out);
}
}
}
}