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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 "bucketstate.h"
#include <vespa/document/bucket/bucketid.h>
#include <vespa/persistence/spi/result.h>
#include <vespa/vespalib/stllike/hash_map.h>
#include <atomic>
namespace proton::bucketdb { class RemoveBatchEntry; }
namespace proton {
class BucketDB
{
private:
using GlobalId = document::GlobalId;
using BucketId = document::BucketId;
using Timestamp = storage::spi::Timestamp;
using BucketChecksum = storage::spi::BucketChecksum;
using BucketState = bucketdb::BucketState;
using Map = vespalib::hash_map<BucketId, BucketState, document::BucketId::hash>;
Map _map;
std::atomic<size_t> _numActiveDocs;
BucketId _cachedBucketId;
BucketState _cachedBucketState;
void clear();
void checkEmpty() const;
size_t countActiveDocs() const;
void checkActiveCount() const;
void addActive(size_t value) {
_numActiveDocs.store(getNumActiveDocs() + value, std::memory_order_relaxed);
}
void subActive(size_t value) {
_numActiveDocs.store(getNumActiveDocs() - value, std::memory_order_relaxed);
}
public:
BucketDB();
BucketDB(const BucketDB &) = delete;
BucketDB & operator=(const BucketDB &) = delete;
~BucketDB();
const BucketState & add(const GlobalId &gid,
BucketId bucketId, Timestamp timestamp, uint32_t docSize,
SubDbType subDbType);
void add(BucketId bucketId, const BucketState & state);
void remove(const GlobalId &gid,
BucketId bucketId, Timestamp timestamp, uint32_t docSize,
SubDbType subDbType);
void remove_batch(const std::vector<bucketdb::RemoveBatchEntry> &removed, SubDbType sub_db_type);
void modify(const GlobalId &gid,
BucketId oldBucketId, Timestamp oldTimestamp, uint32_t oldDocSize,
BucketId newBucketId, Timestamp newTimestamp, uint32_t newDocSize,
SubDbType subDbType);
BucketState get(BucketId bucketId) const;
void cacheBucket(BucketId bucketId);
void uncacheBucket();
bool isCachedBucket(BucketId bucketId) const;
storage::spi::BucketInfo cachedGetBucketInfo(BucketId bucketId) const;
BucketState cachedGet(BucketId bucketId) const;
bool hasBucket(BucketId bucketId) const;
BucketId::List getBuckets() const;
bool empty() const { return _map.empty(); }
void setBucketState(BucketId bucketId, bool active);
void createBucket(BucketId bucketId);
void deleteEmptyBucket(BucketId bucketId);
BucketId::List getActiveBuckets() const;
BucketId::List populateActiveBuckets(BucketId::List buckets);
size_t size() const { return _map.size(); }
bool isActiveBucket(BucketId bucketId) const;
void unloadBucket(BucketId bucket, const BucketState &delta);
size_t getNumActiveDocs() const { return _numActiveDocs.load(std::memory_order_relaxed); }
// Avoid using this one as it breaks encapsulation
BucketState *getBucketStatePtr(BucketId bucket);
// Must be called if buckets state aquired with getBucketStatePtr has been modified.
void restoreIntegrity();
bool validateIntegrity() const;
};
}
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