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Elasticsearch subproject :server
/*
* 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.indices.recovery;
import org.apache.lucene.store.RateLimiter;
import org.elasticsearch.ElasticsearchException;
import org.elasticsearch.action.ActionListener;
import org.elasticsearch.action.ActionListenerResponseHandler;
import org.elasticsearch.cluster.node.DiscoveryNode;
import org.elasticsearch.common.bytes.BytesReference;
import org.elasticsearch.index.seqno.ReplicationTracker;
import org.elasticsearch.index.seqno.RetentionLeases;
import org.elasticsearch.index.shard.ShardId;
import org.elasticsearch.index.store.Store;
import org.elasticsearch.index.store.StoreFileMetaData;
import org.elasticsearch.index.translog.Translog;
import org.elasticsearch.threadpool.ThreadPool;
import org.elasticsearch.transport.EmptyTransportResponseHandler;
import org.elasticsearch.transport.TransportRequestOptions;
import org.elasticsearch.transport.TransportResponse;
import org.elasticsearch.transport.TransportService;
import java.io.IOException;
import java.util.List;
import java.util.concurrent.atomic.AtomicLong;
import java.util.function.Consumer;
public class RemoteRecoveryTargetHandler implements RecoveryTargetHandler {
private final TransportService transportService;
private final long recoveryId;
private final ShardId shardId;
private final DiscoveryNode targetNode;
private final RecoverySettings recoverySettings;
private final TransportRequestOptions translogOpsRequestOptions;
private final TransportRequestOptions fileChunkRequestOptions;
private final AtomicLong bytesSinceLastPause = new AtomicLong();
private final Consumer onSourceThrottle;
public RemoteRecoveryTargetHandler(long recoveryId, ShardId shardId, TransportService transportService,
DiscoveryNode targetNode, RecoverySettings recoverySettings, Consumer onSourceThrottle) {
this.transportService = transportService;
this.recoveryId = recoveryId;
this.shardId = shardId;
this.targetNode = targetNode;
this.recoverySettings = recoverySettings;
this.onSourceThrottle = onSourceThrottle;
this.translogOpsRequestOptions = TransportRequestOptions.builder()
.withType(TransportRequestOptions.Type.RECOVERY)
.withTimeout(recoverySettings.internalActionLongTimeout())
.build();
this.fileChunkRequestOptions = TransportRequestOptions.builder()
.withType(TransportRequestOptions.Type.RECOVERY)
.withTimeout(recoverySettings.internalActionTimeout())
.build();
}
@Override
public void prepareForTranslogOperations(int totalTranslogOps, ActionListener listener) {
transportService.submitRequest(targetNode, PeerRecoveryTargetService.Actions.PREPARE_TRANSLOG,
new RecoveryPrepareForTranslogOperationsRequest(recoveryId, shardId, totalTranslogOps),
TransportRequestOptions.builder().withTimeout(recoverySettings.internalActionTimeout()).build(),
new ActionListenerResponseHandler<>(ActionListener.map(listener, r -> null),
in -> TransportResponse.Empty.INSTANCE, ThreadPool.Names.GENERIC));
}
@Override
public void finalizeRecovery(final long globalCheckpoint, final long trimAboveSeqNo, final ActionListener listener) {
transportService.submitRequest(targetNode, PeerRecoveryTargetService.Actions.FINALIZE,
new RecoveryFinalizeRecoveryRequest(recoveryId, shardId, globalCheckpoint, trimAboveSeqNo),
TransportRequestOptions.builder().withTimeout(recoverySettings.internalActionLongTimeout()).build(),
new ActionListenerResponseHandler<>(ActionListener.map(listener, r -> null),
in -> TransportResponse.Empty.INSTANCE, ThreadPool.Names.GENERIC));
}
@Override
public void handoffPrimaryContext(final ReplicationTracker.PrimaryContext primaryContext) {
transportService.submitRequest(
targetNode,
PeerRecoveryTargetService.Actions.HANDOFF_PRIMARY_CONTEXT,
new RecoveryHandoffPrimaryContextRequest(recoveryId, shardId, primaryContext),
TransportRequestOptions.builder().withTimeout(recoverySettings.internalActionTimeout()).build(),
EmptyTransportResponseHandler.INSTANCE_SAME).txGet();
}
@Override
public void indexTranslogOperations(
final List operations,
final int totalTranslogOps,
final long maxSeenAutoIdTimestampOnPrimary,
final long maxSeqNoOfDeletesOrUpdatesOnPrimary,
final RetentionLeases retentionLeases,
final long mappingVersionOnPrimary,
final ActionListener listener) {
final RecoveryTranslogOperationsRequest request = new RecoveryTranslogOperationsRequest(
recoveryId,
shardId,
operations,
totalTranslogOps,
maxSeenAutoIdTimestampOnPrimary,
maxSeqNoOfDeletesOrUpdatesOnPrimary,
retentionLeases,
mappingVersionOnPrimary);
transportService.submitRequest(targetNode, PeerRecoveryTargetService.Actions.TRANSLOG_OPS, request, translogOpsRequestOptions,
new ActionListenerResponseHandler<>(ActionListener.map(listener, r -> r.localCheckpoint),
RecoveryTranslogOperationsResponse::new, ThreadPool.Names.GENERIC));
}
@Override
public void receiveFileInfo(List phase1FileNames, List phase1FileSizes, List phase1ExistingFileNames,
List phase1ExistingFileSizes, int totalTranslogOps, ActionListener listener) {
RecoveryFilesInfoRequest recoveryInfoFilesRequest = new RecoveryFilesInfoRequest(recoveryId, shardId,
phase1FileNames, phase1FileSizes, phase1ExistingFileNames, phase1ExistingFileSizes, totalTranslogOps);
transportService.submitRequest(targetNode, PeerRecoveryTargetService.Actions.FILES_INFO, recoveryInfoFilesRequest,
TransportRequestOptions.builder().withTimeout(recoverySettings.internalActionTimeout()).build(),
new ActionListenerResponseHandler<>(ActionListener.map(listener, r -> null),
in -> TransportResponse.Empty.INSTANCE, ThreadPool.Names.GENERIC));
}
@Override
public void cleanFiles(int totalTranslogOps, long globalCheckpoint, Store.MetadataSnapshot sourceMetaData,
ActionListener listener) {
transportService.submitRequest(targetNode, PeerRecoveryTargetService.Actions.CLEAN_FILES,
new RecoveryCleanFilesRequest(recoveryId, shardId, sourceMetaData, totalTranslogOps, globalCheckpoint),
TransportRequestOptions.builder().withTimeout(recoverySettings.internalActionTimeout()).build(),
new ActionListenerResponseHandler<>(ActionListener.map(listener, r -> null),
in -> TransportResponse.Empty.INSTANCE, ThreadPool.Names.GENERIC));
}
@Override
public void writeFileChunk(StoreFileMetaData fileMetaData, long position, BytesReference content,
boolean lastChunk, int totalTranslogOps, ActionListener listener) {
// Pause using the rate limiter, if desired, to throttle the recovery
final long throttleTimeInNanos;
// always fetch the ratelimiter - it might be updated in real-time on the recovery settings
final RateLimiter rl = recoverySettings.rateLimiter();
if (rl != null) {
long bytes = bytesSinceLastPause.addAndGet(content.length());
if (bytes > rl.getMinPauseCheckBytes()) {
// Time to pause
bytesSinceLastPause.addAndGet(-bytes);
try {
throttleTimeInNanos = rl.pause(bytes);
onSourceThrottle.accept(throttleTimeInNanos);
} catch (IOException e) {
throw new ElasticsearchException("failed to pause recovery", e);
}
} else {
throttleTimeInNanos = 0;
}
} else {
throttleTimeInNanos = 0;
}
transportService.submitRequest(targetNode, PeerRecoveryTargetService.Actions.FILE_CHUNK,
new RecoveryFileChunkRequest(recoveryId, shardId, fileMetaData, position, content, lastChunk,
totalTranslogOps,
/* we send estimateTotalOperations with every request since we collect stats on the target and that way we can
* see how many translog ops we accumulate while copying files across the network. A future optimization
* would be in to restart file copy again (new deltas) if we have too many translog ops are piling up.
*/
throttleTimeInNanos), fileChunkRequestOptions, new ActionListenerResponseHandler<>(
ActionListener.map(listener, r -> null), in -> TransportResponse.Empty.INSTANCE, ThreadPool.Names.GENERIC));
}
}