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// Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#pragma once
#include "blockable_maintenance_job.h"
#include "document_db_maintenance_config.h"
#include "i_disk_mem_usage_listener.h"
#include "iclusterstatechangedhandler.h"
#include <vespa/document/bucket/bucketspace.h>
#include <vespa/searchlib/common/idocumentmetastore.h>
#include <vespa/vespalib/util/retain_guard.h>
#include <atomic>
namespace storage::spi { struct BucketExecutor; }
namespace searchcorespi::index { struct IThreadService; }
namespace vespalib { class IDestructorCallback; }
namespace proton {
class MoveOperation;
class IDiskMemUsageNotifier;
class IClusterStateChangedNotifier;
struct IOperationStorer;
struct ILidSpaceCompactionHandler;
struct IDocumentScanIterator;
class RemoveOperationsRateTracker;
}
namespace proton::lidspace {
/**
* Moves documents from higher lids to lower lids. It uses a BucketExecutor that ensures that the bucket
* is locked for changes while the document is moved.
*/
class CompactionJob : public BlockableMaintenanceJob,
public IDiskMemUsageListener,
public IClusterStateChangedHandler,
public std::enable_shared_from_this<CompactionJob>
{
private:
using BucketExecutor = storage::spi::BucketExecutor;
using IDestructorCallback = vespalib::IDestructorCallback;
using IThreadService = searchcorespi::index::IThreadService;
const DocumentDBLidSpaceCompactionConfig _cfg;
std::shared_ptr<ILidSpaceCompactionHandler> _handler;
IOperationStorer &_opStorer;
std::unique_ptr<IDocumentScanIterator> _scanItr;
IDiskMemUsageNotifier &_diskMemUsageNotifier;
IClusterStateChangedNotifier &_clusterStateChangedNotifier;
std::shared_ptr<RemoveOperationsRateTracker> _ops_rate_tracker;
bool _is_disabled;
bool _shouldCompactLidSpace;
IThreadService &_master;
BucketExecutor &_bucketExecutor;
vespalib::RetainGuard _dbRetainer;
document::BucketSpace _bucketSpace;
bool hasTooMuchLidBloat(const search::LidUsageStats &stats) const;
bool shouldRestartScanDocuments(const search::LidUsageStats &stats) const;
void compactLidSpace(const search::LidUsageStats &stats);
bool remove_batch_is_ongoing() const;
bool remove_is_ongoing() const;
search::DocumentMetaData getNextDocument(const search::LidUsageStats &stats);
bool scanDocuments(const search::LidUsageStats &stats);
static void moveDocument(std::shared_ptr<CompactionJob> job, const search::DocumentMetaData & metaThen,
std::shared_ptr<IDestructorCallback> onDone);
void completeMove(const search::DocumentMetaData & metaThen, std::unique_ptr<MoveOperation> moveOp,
std::shared_ptr<IDestructorCallback> onDone);
class MoveTask;
CompactionJob(const DocumentDBLidSpaceCompactionConfig &config,
vespalib::RetainGuard dbRetainer,
std::shared_ptr<ILidSpaceCompactionHandler> handler,
IOperationStorer &opStorer,
IThreadService & master,
BucketExecutor & bucketExecutor,
IDiskMemUsageNotifier &diskMemUsageNotifier,
const BlockableMaintenanceJobConfig &blockableConfig,
IClusterStateChangedNotifier &clusterStateChangedNotifier,
bool nodeRetired,
document::BucketSpace bucketSpace);
public:
static std::shared_ptr<CompactionJob>
create(const DocumentDBLidSpaceCompactionConfig &config,
vespalib::RetainGuard dbRetainer,
std::shared_ptr<ILidSpaceCompactionHandler> handler,
IOperationStorer &opStorer,
IThreadService & master,
BucketExecutor & bucketExecutor,
IDiskMemUsageNotifier &diskMemUsageNotifier,
const BlockableMaintenanceJobConfig &blockableConfig,
IClusterStateChangedNotifier &clusterStateChangedNotifier,
bool nodeRetired,
document::BucketSpace bucketSpace);
~CompactionJob() override;
void notifyDiskMemUsage(DiskMemUsageState state) override;
void notifyClusterStateChanged(const std::shared_ptr<IBucketStateCalculator> &newCalc) override;
bool run() override;
};
} // namespace proton
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