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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.cluster.metadata;
import org.elasticsearch.ElasticsearchException;
import org.elasticsearch.Version;
import org.elasticsearch.action.ActionListener;
import org.elasticsearch.action.admin.indices.close.CloseIndexClusterStateUpdateRequest;
import org.elasticsearch.action.admin.indices.open.OpenIndexClusterStateUpdateRequest;
import org.elasticsearch.action.support.ActiveShardsObserver;
import org.elasticsearch.cluster.AckedClusterStateUpdateTask;
import org.elasticsearch.cluster.ClusterState;
import org.elasticsearch.cluster.ack.ClusterStateUpdateResponse;
import org.elasticsearch.cluster.ack.OpenIndexClusterStateUpdateResponse;
import org.elasticsearch.cluster.block.ClusterBlock;
import org.elasticsearch.cluster.block.ClusterBlockLevel;
import org.elasticsearch.cluster.block.ClusterBlocks;
import org.elasticsearch.cluster.routing.RoutingTable;
import org.elasticsearch.cluster.routing.allocation.AllocationService;
import org.elasticsearch.cluster.service.ClusterService;
import org.elasticsearch.common.Priority;
import org.elasticsearch.common.component.AbstractComponent;
import org.elasticsearch.common.inject.Inject;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.index.Index;
import org.elasticsearch.indices.IndicesService;
import org.elasticsearch.rest.RestStatus;
import org.elasticsearch.snapshots.RestoreService;
import org.elasticsearch.snapshots.SnapshotsService;
import org.elasticsearch.threadpool.ThreadPool;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
/**
* Service responsible for submitting open/close index requests
*/
public class MetaDataIndexStateService extends AbstractComponent {
public static final ClusterBlock INDEX_CLOSED_BLOCK = new ClusterBlock(4, "index closed", false, false, false, RestStatus.FORBIDDEN, ClusterBlockLevel.READ_WRITE);
private final ClusterService clusterService;
private final AllocationService allocationService;
private final MetaDataIndexUpgradeService metaDataIndexUpgradeService;
private final IndicesService indicesService;
private final ActiveShardsObserver activeShardsObserver;
@Inject
public MetaDataIndexStateService(Settings settings, ClusterService clusterService, AllocationService allocationService,
MetaDataIndexUpgradeService metaDataIndexUpgradeService,
IndicesService indicesService, ThreadPool threadPool) {
super(settings);
this.indicesService = indicesService;
this.clusterService = clusterService;
this.allocationService = allocationService;
this.metaDataIndexUpgradeService = metaDataIndexUpgradeService;
this.activeShardsObserver = new ActiveShardsObserver(settings, clusterService, threadPool);
}
public void closeIndex(final CloseIndexClusterStateUpdateRequest request, final ActionListener listener) {
if (request.indices() == null || request.indices().length == 0) {
throw new IllegalArgumentException("Index name is required");
}
final String indicesAsString = Arrays.toString(request.indices());
clusterService.submitStateUpdateTask("close-indices " + indicesAsString, new AckedClusterStateUpdateTask(Priority.URGENT, request, listener) {
@Override
protected ClusterStateUpdateResponse newResponse(boolean acknowledged) {
return new ClusterStateUpdateResponse(acknowledged);
}
@Override
public ClusterState execute(ClusterState currentState) {
Set indicesToClose = new HashSet<>();
for (Index index : request.indices()) {
final IndexMetaData indexMetaData = currentState.metaData().getIndexSafe(index);
if (indexMetaData.getState() != IndexMetaData.State.CLOSE) {
indicesToClose.add(indexMetaData);
}
}
if (indicesToClose.isEmpty()) {
return currentState;
}
// Check if index closing conflicts with any running restores
RestoreService.checkIndexClosing(currentState, indicesToClose);
// Check if index closing conflicts with any running snapshots
SnapshotsService.checkIndexClosing(currentState, indicesToClose);
logger.info("closing indices [{}]", indicesAsString);
MetaData.Builder mdBuilder = MetaData.builder(currentState.metaData());
ClusterBlocks.Builder blocksBuilder = ClusterBlocks.builder()
.blocks(currentState.blocks());
for (IndexMetaData openIndexMetadata : indicesToClose) {
final String indexName = openIndexMetadata.getIndex().getName();
mdBuilder.put(IndexMetaData.builder(openIndexMetadata).state(IndexMetaData.State.CLOSE));
blocksBuilder.addIndexBlock(indexName, INDEX_CLOSED_BLOCK);
}
ClusterState updatedState = ClusterState.builder(currentState).metaData(mdBuilder).blocks(blocksBuilder).build();
RoutingTable.Builder rtBuilder = RoutingTable.builder(currentState.routingTable());
for (IndexMetaData index : indicesToClose) {
rtBuilder.remove(index.getIndex().getName());
}
//no explicit wait for other nodes needed as we use AckedClusterStateUpdateTask
return allocationService.reroute(
ClusterState.builder(updatedState).routingTable(rtBuilder.build()).build(),
"indices closed [" + indicesAsString + "]");
}
});
}
public void openIndex(final OpenIndexClusterStateUpdateRequest request, final ActionListener listener) {
onlyOpenIndex(request, ActionListener.wrap(response -> {
if (response.isAcknowledged()) {
String[] indexNames = Arrays.stream(request.indices()).map(Index::getName).toArray(String[]::new);
activeShardsObserver.waitForActiveShards(indexNames, request.waitForActiveShards(), request.ackTimeout(),
shardsAcknowledged -> {
if (shardsAcknowledged == false) {
logger.debug("[{}] indices opened, but the operation timed out while waiting for " +
"enough shards to be started.", Arrays.toString(indexNames));
}
listener.onResponse(new OpenIndexClusterStateUpdateResponse(response.isAcknowledged(), shardsAcknowledged));
}, listener::onFailure);
} else {
listener.onResponse(new OpenIndexClusterStateUpdateResponse(false, false));
}
}, listener::onFailure));
}
private void onlyOpenIndex(final OpenIndexClusterStateUpdateRequest request, final ActionListener listener) {
if (request.indices() == null || request.indices().length == 0) {
throw new IllegalArgumentException("Index name is required");
}
final String indicesAsString = Arrays.toString(request.indices());
clusterService.submitStateUpdateTask("open-indices " + indicesAsString, new AckedClusterStateUpdateTask(Priority.URGENT, request, listener) {
@Override
protected ClusterStateUpdateResponse newResponse(boolean acknowledged) {
return new ClusterStateUpdateResponse(acknowledged);
}
@Override
public ClusterState execute(ClusterState currentState) {
List indicesToOpen = new ArrayList<>();
for (Index index : request.indices()) {
final IndexMetaData indexMetaData = currentState.metaData().getIndexSafe(index);
if (indexMetaData.getState() != IndexMetaData.State.OPEN) {
indicesToOpen.add(indexMetaData);
}
}
if (indicesToOpen.isEmpty()) {
return currentState;
}
logger.info("opening indices [{}]", indicesAsString);
MetaData.Builder mdBuilder = MetaData.builder(currentState.metaData());
ClusterBlocks.Builder blocksBuilder = ClusterBlocks.builder()
.blocks(currentState.blocks());
final Version minIndexCompatibilityVersion = currentState.getNodes().getMaxNodeVersion()
.minimumIndexCompatibilityVersion();
for (IndexMetaData closedMetaData : indicesToOpen) {
final String indexName = closedMetaData.getIndex().getName();
IndexMetaData indexMetaData = IndexMetaData.builder(closedMetaData).state(IndexMetaData.State.OPEN).build();
// The index might be closed because we couldn't import it due to old incompatible version
// We need to check that this index can be upgraded to the current version
indexMetaData = metaDataIndexUpgradeService.upgradeIndexMetaData(indexMetaData, minIndexCompatibilityVersion);
try {
indicesService.verifyIndexMetadata(indexMetaData, indexMetaData);
} catch (Exception e) {
throw new ElasticsearchException("Failed to verify index " + indexMetaData.getIndex(), e);
}
mdBuilder.put(indexMetaData, true);
blocksBuilder.removeIndexBlock(indexName, INDEX_CLOSED_BLOCK);
}
ClusterState updatedState = ClusterState.builder(currentState).metaData(mdBuilder).blocks(blocksBuilder).build();
RoutingTable.Builder rtBuilder = RoutingTable.builder(updatedState.routingTable());
for (IndexMetaData index : indicesToOpen) {
rtBuilder.addAsFromCloseToOpen(updatedState.metaData().getIndexSafe(index.getIndex()));
}
//no explicit wait for other nodes needed as we use AckedClusterStateUpdateTask
return allocationService.reroute(
ClusterState.builder(updatedState).routingTable(rtBuilder.build()).build(),
"indices opened [" + indicesAsString + "]");
}
});
}
}