/*
* 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.index;
import org.apache.logging.log4j.Logger;
import org.apache.logging.log4j.message.ParameterizedMessage;
import org.apache.logging.log4j.util.Supplier;
import org.elasticsearch.cluster.routing.ShardRouting;
import org.elasticsearch.common.Nullable;
import org.elasticsearch.common.logging.Loggers;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.index.shard.IndexEventListener;
import org.elasticsearch.index.shard.IndexShard;
import org.elasticsearch.index.shard.IndexShardState;
import org.elasticsearch.index.shard.ShardId;
import org.elasticsearch.indices.cluster.IndicesClusterStateService.AllocatedIndices.IndexRemovalReason;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.List;
/**
* A composite {@link IndexEventListener} that forwards all callbacks to an immutable list of IndexEventListener
*/
final class CompositeIndexEventListener implements IndexEventListener {
private final List<IndexEventListener> listeners;
private final Logger logger;
CompositeIndexEventListener(IndexSettings indexSettings, Collection<IndexEventListener> listeners) {
for (IndexEventListener listener : listeners) {
if (listener == null) {
throw new IllegalArgumentException("listeners must be non-null");
}
}
this.listeners = Collections.unmodifiableList(new ArrayList<>(listeners));
this.logger = Loggers.getLogger(getClass(), indexSettings.getSettings(), indexSettings.getIndex());
}
@Override
public void shardRoutingChanged(IndexShard indexShard, @Nullable ShardRouting oldRouting, ShardRouting newRouting) {
for (IndexEventListener listener : listeners) {
try {
listener.shardRoutingChanged(indexShard, oldRouting, newRouting);
} catch (Exception e) {
logger.warn((Supplier<?>) () -> new ParameterizedMessage("[{}] failed to invoke shard touring changed callback", indexShard.shardId().getId()), e);
}
}
}
@Override
public void afterIndexShardCreated(IndexShard indexShard) {
for (IndexEventListener listener : listeners) {
try {
listener.afterIndexShardCreated(indexShard);
} catch (Exception e) {
logger.warn((Supplier<?>) () -> new ParameterizedMessage("[{}] failed to invoke after shard created callback", indexShard.shardId().getId()), e);
throw e;
}
}
}
@Override
public void afterIndexShardStarted(IndexShard indexShard) {
for (IndexEventListener listener : listeners) {
try {
listener.afterIndexShardStarted(indexShard);
} catch (Exception e) {
logger.warn((Supplier<?>) () -> new ParameterizedMessage("[{}] failed to invoke after shard started callback", indexShard.shardId().getId()), e);
throw e;
}
}
}
@Override
public void beforeIndexShardClosed(ShardId shardId, @Nullable IndexShard indexShard,
Settings indexSettings) {
for (IndexEventListener listener : listeners) {
try {
listener.beforeIndexShardClosed(shardId, indexShard, indexSettings);
} catch (Exception e) {
logger.warn((Supplier<?>) () -> new ParameterizedMessage("[{}] failed to invoke before shard closed callback", shardId.getId()), e);
throw e;
}
}
}
@Override
public void afterIndexShardClosed(ShardId shardId, @Nullable IndexShard indexShard,
Settings indexSettings) {
for (IndexEventListener listener : listeners) {
try {
listener.afterIndexShardClosed(shardId, indexShard, indexSettings);
} catch (Exception e) {
logger.warn((Supplier<?>) () -> new ParameterizedMessage("[{}] failed to invoke after shard closed callback", shardId.getId()), e);
throw e;
}
}
}
@Override
public void onShardInactive(IndexShard indexShard) {
for (IndexEventListener listener : listeners) {
try {
listener.onShardInactive(indexShard);
} catch (Exception e) {
logger.warn((Supplier<?>) () -> new ParameterizedMessage("[{}] failed to invoke on shard inactive callback", indexShard.shardId().getId()), e);
throw e;
}
}
}
@Override
public void indexShardStateChanged(IndexShard indexShard, @Nullable IndexShardState previousState, IndexShardState currentState, @Nullable String reason) {
for (IndexEventListener listener : listeners) {
try {
listener.indexShardStateChanged(indexShard, previousState, indexShard.state(), reason);
} catch (Exception e) {
logger.warn((Supplier<?>) () -> new ParameterizedMessage("[{}] failed to invoke index shard state changed callback", indexShard.shardId().getId()), e);
throw e;
}
}
}
@Override
public void beforeIndexCreated(Index index, Settings indexSettings) {
for (IndexEventListener listener : listeners) {
try {
listener.beforeIndexCreated(index, indexSettings);
} catch (Exception e) {
logger.warn("failed to invoke before index created callback", e);
throw e;
}
}
}
@Override
public void afterIndexCreated(IndexService indexService) {
for (IndexEventListener listener : listeners) {
try {
listener.afterIndexCreated(indexService);
} catch (Exception e) {
logger.warn("failed to invoke after index created callback", e);
throw e;
}
}
}
@Override
public void beforeIndexShardCreated(ShardId shardId, Settings indexSettings) {
for (IndexEventListener listener : listeners) {
try {
listener.beforeIndexShardCreated(shardId, indexSettings);
} catch (Exception e) {
logger.warn((Supplier<?>) () -> new ParameterizedMessage("[{}] failed to invoke before shard created callback", shardId), e);
throw e;
}
}
}
@Override
public void beforeIndexRemoved(IndexService indexService, IndexRemovalReason reason) {
for (IndexEventListener listener : listeners) {
try {
listener.beforeIndexRemoved(indexService, reason);
} catch (Exception e) {
logger.warn("failed to invoke before index removed callback", e);
throw e;
}
}
}
@Override
public void afterIndexRemoved(Index index, IndexSettings indexSettings, IndexRemovalReason reason) {
for (IndexEventListener listener : listeners) {
try {
listener.afterIndexRemoved(index, indexSettings, reason);
} catch (Exception e) {
logger.warn("failed to invoke after index removed callback", e);
throw e;
}
}
}
@Override
public void beforeIndexShardDeleted(ShardId shardId,
Settings indexSettings) {
for (IndexEventListener listener : listeners) {
try {
listener.beforeIndexShardDeleted(shardId, indexSettings);
} catch (Exception e) {
logger.warn((Supplier<?>) () -> new ParameterizedMessage("[{}] failed to invoke before shard deleted callback", shardId.getId()), e);
throw e;
}
}
}
@Override
public void afterIndexShardDeleted(ShardId shardId,
Settings indexSettings) {
for (IndexEventListener listener : listeners) {
try {
listener.afterIndexShardDeleted(shardId, indexSettings);
} catch (Exception e) {
logger.warn((Supplier<?>) () -> new ParameterizedMessage("[{}] failed to invoke after shard deleted callback", shardId.getId()), e);
throw e;
}
}
}
@Override
public void beforeIndexAddedToCluster(Index index, Settings indexSettings) {
for (IndexEventListener listener : listeners) {
try {
listener.beforeIndexAddedToCluster(index, indexSettings);
} catch (Exception e) {
logger.warn("failed to invoke before index added to cluster callback", e);
throw e;
}
}
}
@Override
public void onStoreClosed(ShardId shardId) {
for (IndexEventListener listener : listeners) {
try {
listener.onStoreClosed(shardId);
} catch (Exception e) {
logger.warn("failed to invoke on store closed", e);
throw e;
}
}
}
}