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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#pragma once
#include "checksumaggregator.h"
#include <vespa/searchcore/proton/common/subdbtype.h>
#include <vespa/vespalib/util/memory.h>
namespace proton::bucketdb {
class ChecksumAggregator;
/**
* Class BucketState represent the known state of a bucket in raw form.
*/
class BucketState
{
public:
using ChecksumType = ChecksumAggregator::ChecksumType;
using GlobalId = document::GlobalId;
using Timestamp = storage::spi::Timestamp;
using BucketChecksum = storage::spi::BucketChecksum;
private:
static constexpr uint32_t READY = static_cast<uint32_t>(SubDbType::READY);
static constexpr uint32_t REMOVED = static_cast<uint32_t>(SubDbType::REMOVED);
static constexpr uint32_t NOTREADY = static_cast<uint32_t>(SubDbType::NOTREADY);
static constexpr uint32_t COUNTS = static_cast<uint32_t>(SubDbType::COUNT);
union { uint32_t _legacy; uint64_t _xxh64;} _ch;
size_t _docSizes[COUNTS];
uint32_t _docCount[COUNTS];
bool _active;
static ChecksumType _checksumType;
static std::unique_ptr<ChecksumAggregator> createChecksum(BucketChecksum seed);
public:
static void setChecksumType(ChecksumType checksum);
BucketState();
BucketState(const BucketState & rhs);
BucketState(BucketState && rhs) noexcept;
BucketState & operator=(BucketState && rhs) noexcept;
~BucketState();
static BucketChecksum addChecksum(BucketChecksum a, BucketChecksum b);
void add(const GlobalId &gid, const Timestamp ×tamp, uint32_t docSize, SubDbType subDbType);
void remove(const GlobalId &gid, const Timestamp ×tamp, uint32_t docSize, SubDbType subDbType);
void modify(const GlobalId &gid,
const Timestamp &oldTimestamp, uint32_t oldDocSize,
const Timestamp &newTimestamp, uint32_t newDocSize,
SubDbType subDbType);
BucketState &
setActive(bool active) {
_active = active;
return *this;
}
bool isActive() const { return _active; }
uint32_t getReadyCount() const { return _docCount[READY]; }
uint32_t getRemovedCount() const { return _docCount[REMOVED]; }
uint32_t getNotReadyCount() const { return _docCount[NOTREADY]; }
size_t getReadyDocSizes() const { return _docSizes[READY]; }
size_t getRemovedDocSizes() const { return _docSizes[REMOVED]; }
size_t getNotReadyDocSizes() const { return _docSizes[NOTREADY]; }
uint32_t getDocumentCount() const { return getReadyCount() + getNotReadyCount(); }
uint32_t getActiveDocumentCount() const { return isActive() ? getDocumentCount() : 0u;}
uint32_t getEntryCount() const { return getDocumentCount() + getRemovedCount(); }
BucketChecksum getChecksum() const;
bool empty() const;
BucketState &operator+=(const BucketState &rhs);
BucketState &operator-=(const BucketState &rhs);
void applyDelta(BucketState *src, BucketState *dst) const;
operator storage::spi::BucketInfo() const;
};
}
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