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Use
CcrRepository
to init follower index (#35719)
This commit modifies the put follow index action to use a CcrRepository when creating a follower index. It routes the logic through the snapshot/restore process. A wait_for_active_shards parameter can be used to configure how long to wait before returning the response.
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87 changes: 87 additions & 0 deletions
87
...org/elasticsearch/action/admin/cluster/snapshots/restore/RestoreClusterStateListener.java
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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. | ||
*/ | ||
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package org.elasticsearch.action.admin.cluster.snapshots.restore; | ||
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import org.apache.logging.log4j.LogManager; | ||
import org.apache.logging.log4j.Logger; | ||
import org.elasticsearch.action.ActionListener; | ||
import org.elasticsearch.cluster.ClusterChangedEvent; | ||
import org.elasticsearch.cluster.ClusterStateListener; | ||
import org.elasticsearch.cluster.RestoreInProgress; | ||
import org.elasticsearch.cluster.service.ClusterService; | ||
import org.elasticsearch.common.collect.ImmutableOpenMap; | ||
import org.elasticsearch.index.shard.ShardId; | ||
import org.elasticsearch.snapshots.RestoreInfo; | ||
import org.elasticsearch.snapshots.RestoreService; | ||
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import static org.elasticsearch.snapshots.RestoreService.restoreInProgress; | ||
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public class RestoreClusterStateListener implements ClusterStateListener { | ||
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private static final Logger logger = LogManager.getLogger(RestoreClusterStateListener.class); | ||
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private final ClusterService clusterService; | ||
private final String uuid; | ||
private final ActionListener<RestoreSnapshotResponse> listener; | ||
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private RestoreClusterStateListener(ClusterService clusterService, RestoreService.RestoreCompletionResponse response, | ||
ActionListener<RestoreSnapshotResponse> listener) { | ||
this.clusterService = clusterService; | ||
this.uuid = response.getUuid(); | ||
this.listener = listener; | ||
} | ||
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@Override | ||
public void clusterChanged(ClusterChangedEvent changedEvent) { | ||
final RestoreInProgress.Entry prevEntry = restoreInProgress(changedEvent.previousState(), uuid); | ||
final RestoreInProgress.Entry newEntry = restoreInProgress(changedEvent.state(), uuid); | ||
if (prevEntry == null) { | ||
// When there is a master failure after a restore has been started, this listener might not be registered | ||
// on the current master and as such it might miss some intermediary cluster states due to batching. | ||
// Clean up listener in that case and acknowledge completion of restore operation to client. | ||
clusterService.removeListener(this); | ||
listener.onResponse(new RestoreSnapshotResponse(null)); | ||
} else if (newEntry == null) { | ||
clusterService.removeListener(this); | ||
ImmutableOpenMap<ShardId, RestoreInProgress.ShardRestoreStatus> shards = prevEntry.shards(); | ||
assert prevEntry.state().completed() : "expected completed snapshot state but was " + prevEntry.state(); | ||
assert RestoreService.completed(shards) : "expected all restore entries to be completed"; | ||
RestoreInfo ri = new RestoreInfo(prevEntry.snapshot().getSnapshotId().getName(), | ||
prevEntry.indices(), | ||
shards.size(), | ||
shards.size() - RestoreService.failedShards(shards)); | ||
RestoreSnapshotResponse response = new RestoreSnapshotResponse(ri); | ||
logger.debug("restore of [{}] completed", prevEntry.snapshot().getSnapshotId()); | ||
listener.onResponse(response); | ||
} else { | ||
// restore not completed yet, wait for next cluster state update | ||
} | ||
} | ||
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/** | ||
* Creates a cluster state listener and registers it with the cluster service. The listener passed as a | ||
* parameter will be called when the restore is complete. | ||
*/ | ||
public static void createAndRegisterListener(ClusterService clusterService, RestoreService.RestoreCompletionResponse response, | ||
ActionListener<RestoreSnapshotResponse> listener) { | ||
clusterService.addListener(new RestoreClusterStateListener(clusterService, response, listener)); | ||
} | ||
} |
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