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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.upgrade.post;
import org.elasticsearch.Version;
import org.elasticsearch.action.ActionListener;
import org.elasticsearch.action.PrimaryMissingActionException;
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.metadata.MetaData;
import org.elasticsearch.cluster.routing.IndexRoutingTable;
import org.elasticsearch.cluster.routing.RoutingTable;
import org.elasticsearch.cluster.routing.ShardRouting;
import org.elasticsearch.cluster.routing.ShardsIterator;
import org.elasticsearch.common.collect.Tuple;
import org.elasticsearch.common.inject.Inject;
import org.elasticsearch.common.io.stream.StreamInput;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.index.shard.IndexShard;
import org.elasticsearch.indices.IndicesService;
import org.elasticsearch.threadpool.ThreadPool;
import org.elasticsearch.transport.TransportService;
import java.io.IOException;
import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.Set;
/**
* Upgrade index/indices action.
*/
public class TransportUpgradeAction extends TransportBroadcastByNodeAction<UpgradeRequest, UpgradeResponse, ShardUpgradeResult> {
private final IndicesService indicesService;
private final TransportUpgradeSettingsAction upgradeSettingsAction;
@Inject
public TransportUpgradeAction(Settings settings, ThreadPool threadPool, ClusterService clusterService,
TransportService transportService, IndicesService indicesService, ActionFilters actionFilters,
IndexNameExpressionResolver indexNameExpressionResolver, TransportUpgradeSettingsAction upgradeSettingsAction) {
super(settings, UpgradeAction.NAME, threadPool, clusterService, transportService, actionFilters, indexNameExpressionResolver, UpgradeRequest::new, ThreadPool.Names.FORCE_MERGE);
this.indicesService = indicesService;
this.upgradeSettingsAction = upgradeSettingsAction;
}
@Override
protected UpgradeResponse newResponse(UpgradeRequest request, int totalShards, int successfulShards, int failedShards, List<ShardUpgradeResult> shardUpgradeResults, List<ShardOperationFailedException> shardFailures, ClusterState clusterState) {
Map<String, Integer> successfulPrimaryShards = new HashMap<>();
Map<String, Tuple<Version, org.apache.lucene.util.Version>> versions = new HashMap<>();
for (ShardUpgradeResult result : shardUpgradeResults) {
successfulShards++;
String index = result.getShardId().getIndex();
if (result.primary()) {
Integer count = successfulPrimaryShards.get(index);
successfulPrimaryShards.put(index, count == null ? 1 : count + 1);
}
Tuple<Version, org.apache.lucene.util.Version> versionTuple = versions.get(index);
if (versionTuple == null) {
versions.put(index, new Tuple<>(result.upgradeVersion(), result.oldestLuceneSegment()));
} else {
// We already have versions for this index - let's see if we need to update them based on the current shard
Version version = versionTuple.v1();
org.apache.lucene.util.Version luceneVersion = versionTuple.v2();
// For the metadata we are interested in the _latest_ Elasticsearch version that was processing the metadata
// Since we rewrite the mapping during upgrade the metadata is always rewritten by the latest version
if (result.upgradeVersion().after(versionTuple.v1())) {
version = result.upgradeVersion();
}
// For the lucene version we are interested in the _oldest_ lucene version since it determines the
// oldest version that we need to support
if (result.oldestLuceneSegment().onOrAfter(versionTuple.v2()) == false) {
luceneVersion = result.oldestLuceneSegment();
}
versions.put(index, new Tuple<>(version, luceneVersion));
}
}
Map<String, Tuple<org.elasticsearch.Version, String>> updatedVersions = new HashMap<>();
MetaData metaData = clusterState.metaData();
for (Map.Entry<String, Tuple<Version, org.apache.lucene.util.Version>> versionEntry : versions.entrySet()) {
String index = versionEntry.getKey();
Integer primaryCount = successfulPrimaryShards.get(index);
int expectedPrimaryCount = metaData.index(index).getNumberOfShards();
if (primaryCount == metaData.index(index).getNumberOfShards()) {
updatedVersions.put(index, new Tuple<>(versionEntry.getValue().v1(), versionEntry.getValue().v2().toString()));
} else {
logger.warn("Not updating settings for the index [{}] because upgraded of some primary shards failed - expected[{}], received[{}]", index,
expectedPrimaryCount, primaryCount == null ? 0 : primaryCount);
}
}
return new UpgradeResponse(updatedVersions, totalShards, successfulShards, failedShards, shardFailures);
}
@Override
protected ShardUpgradeResult shardOperation(UpgradeRequest request, ShardRouting shardRouting) throws IOException {
IndexShard indexShard = indicesService.indexServiceSafe(shardRouting.shardId().getIndex()).getShard(shardRouting.shardId().id());
org.apache.lucene.util.Version oldestLuceneSegment = indexShard.upgrade(request);
// We are using the current version of Elasticsearch as upgrade version since we update mapping to match the current version
return new ShardUpgradeResult(shardRouting.shardId(), indexShard.routingEntry().primary(), Version.CURRENT, oldestLuceneSegment);
}
@Override
protected ShardUpgradeResult readShardResult(StreamInput in) throws IOException {
ShardUpgradeResult result = new ShardUpgradeResult();
result.readFrom(in);
return result;
}
@Override
protected UpgradeRequest readRequestFrom(StreamInput in) throws IOException {
UpgradeRequest request = new UpgradeRequest();
request.readFrom(in);
return request;
}
/**
* The upgrade request works against *all* shards.
*/
@Override
protected ShardsIterator shards(ClusterState clusterState, UpgradeRequest request, String[] concreteIndices) {
ShardsIterator iterator = clusterState.routingTable().allShards(concreteIndices);
Set<String> indicesWithMissingPrimaries = indicesWithMissingPrimaries(clusterState, concreteIndices);
if (indicesWithMissingPrimaries.isEmpty()) {
return iterator;
}
// If some primary shards are not available the request should fail.
throw new PrimaryMissingActionException("Cannot upgrade indices because the following indices are missing primary shards " + indicesWithMissingPrimaries);
}
/**
* Finds all indices that have not all primaries available
*/
private Set<String> indicesWithMissingPrimaries(ClusterState clusterState, String[] concreteIndices) {
Set<String> indices = new HashSet<>();
RoutingTable routingTable = clusterState.routingTable();
for (String index : concreteIndices) {
IndexRoutingTable indexRoutingTable = routingTable.index(index);
if (indexRoutingTable.allPrimaryShardsActive() == false) {
indices.add(index);
}
}
return indices;
}
@Override
protected ClusterBlockException checkGlobalBlock(ClusterState state, UpgradeRequest request) {
return state.blocks().globalBlockedException(ClusterBlockLevel.METADATA_WRITE);
}
@Override
protected ClusterBlockException checkRequestBlock(ClusterState state, UpgradeRequest request, String[] concreteIndices) {
return state.blocks().indicesBlockedException(ClusterBlockLevel.METADATA_WRITE, concreteIndices);
}
@Override
protected void doExecute(UpgradeRequest request, final ActionListener<UpgradeResponse> listener) {
ActionListener<UpgradeResponse> settingsUpdateListener = new ActionListener<UpgradeResponse>() {
@Override
public void onResponse(UpgradeResponse upgradeResponse) {
try {
if (upgradeResponse.versions().isEmpty()) {
listener.onResponse(upgradeResponse);
} else {
updateSettings(upgradeResponse, listener);
}
} catch (Throwable t) {
listener.onFailure(t);
}
}
@Override
public void onFailure(Throwable e) {
listener.onFailure(e);
}
};
super.doExecute(request, settingsUpdateListener);
}
private void updateSettings(final UpgradeResponse upgradeResponse, final ActionListener<UpgradeResponse> listener) {
UpgradeSettingsRequest upgradeSettingsRequest = new UpgradeSettingsRequest(upgradeResponse.versions());
upgradeSettingsAction.execute(upgradeSettingsRequest, new ActionListener<UpgradeSettingsResponse>() {
@Override
public void onResponse(UpgradeSettingsResponse updateSettingsResponse) {
listener.onResponse(upgradeResponse);
}
@Override
public void onFailure(Throwable e) {
listener.onFailure(e);
}
});
}
}
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