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/*
* Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
* or more contributor license agreements. Licensed under the Elastic License
* 2.0 and the Server Side Public License, v 1; you may not use this file except
* in compliance with, at your election, the Elastic License 2.0 or the Server
* Side Public License, v 1.
*/
package org.elasticsearch.action.admin.indices.readonly;
import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
import org.elasticsearch.action.ActionListener;
import org.elasticsearch.action.support.ActionFilters;
import org.elasticsearch.action.support.DestructiveOperations;
import org.elasticsearch.action.support.master.TransportMasterNodeAction;
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.MetadataIndexStateService;
import org.elasticsearch.cluster.service.ClusterService;
import org.elasticsearch.common.inject.Inject;
import org.elasticsearch.index.Index;
import org.elasticsearch.tasks.Task;
import org.elasticsearch.threadpool.ThreadPool;
import org.elasticsearch.transport.TransportService;
import java.util.Arrays;
import java.util.Collections;
/**
* Adds a single index level block to a given set of indices. Not only does it set the correct setting,
* but it ensures that, in case of a write block, once successfully returning to the user, all shards
* of the index are properly accounting for the block, for instance, when adding a write block all
* in-flight writes to an index have been completed prior to the response being returned. These actions
* are done in multiple cluster state updates (at least two). See also {@link TransportVerifyShardIndexBlockAction}
* for the eventual delegation for shard-level verification.
*/
public class TransportAddIndexBlockAction extends TransportMasterNodeAction {
private static final Logger logger = LogManager.getLogger(TransportAddIndexBlockAction.class);
private final MetadataIndexStateService indexStateService;
private final DestructiveOperations destructiveOperations;
@Inject
public TransportAddIndexBlockAction(
TransportService transportService,
ClusterService clusterService,
ThreadPool threadPool,
MetadataIndexStateService indexStateService,
ActionFilters actionFilters,
IndexNameExpressionResolver indexNameExpressionResolver,
DestructiveOperations destructiveOperations
) {
super(
AddIndexBlockAction.NAME,
transportService,
clusterService,
threadPool,
actionFilters,
AddIndexBlockRequest::new,
indexNameExpressionResolver,
AddIndexBlockResponse::new,
ThreadPool.Names.SAME
);
this.indexStateService = indexStateService;
this.destructiveOperations = destructiveOperations;
}
@Override
protected void doExecute(Task task, AddIndexBlockRequest request, ActionListener listener) {
destructiveOperations.failDestructive(request.indices());
super.doExecute(task, request, listener);
}
@Override
protected ClusterBlockException checkBlock(AddIndexBlockRequest request, ClusterState state) {
if (request.getBlock().getBlock().levels().contains(ClusterBlockLevel.METADATA_WRITE)
&& state.blocks().global(ClusterBlockLevel.METADATA_WRITE).isEmpty()) {
return null;
}
return state.blocks()
.indicesBlockedException(ClusterBlockLevel.METADATA_WRITE, indexNameExpressionResolver.concreteIndexNames(state, request));
}
@Override
protected void masterOperation(
final Task task,
final AddIndexBlockRequest request,
final ClusterState state,
final ActionListener listener
) throws Exception {
final Index[] concreteIndices = indexNameExpressionResolver.concreteIndices(state, request);
if (concreteIndices == null || concreteIndices.length == 0) {
listener.onResponse(new AddIndexBlockResponse(true, false, Collections.emptyList()));
return;
}
final AddIndexBlockClusterStateUpdateRequest addBlockRequest = new AddIndexBlockClusterStateUpdateRequest(
request.getBlock(),
task.getId()
).ackTimeout(request.timeout()).masterNodeTimeout(request.masterNodeTimeout()).indices(concreteIndices);
indexStateService.addIndexBlock(addBlockRequest, listener.delegateResponse((delegatedListener, t) -> {
logger.debug(() -> "failed to mark indices as readonly [" + Arrays.toString(concreteIndices) + "]", t);
delegatedListener.onFailure(t);
}));
}
}