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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 "bucketstate.h"
#include <vespa/document/bucket/bucketid.h>
#include <vespa/persistence/spi/result.h>
#include <map>
namespace proton {
class BucketDB
{
public:
typedef document::GlobalId GlobalId;
typedef document::BucketId BucketId;
typedef storage::spi::Timestamp Timestamp;
typedef storage::spi::BucketChecksum BucketChecksum;
typedef bucketdb::BucketState BucketState;
typedef std::map<BucketId, BucketState> Map;
typedef Map::iterator MapIterator;
typedef Map::const_iterator ConstMapIterator;
typedef std::pair<MapIterator, bool> InsertResult;
private:
Map _map;
BucketId _cachedBucketId;
BucketState _cachedBucketState;
void clear();
void checkEmpty() const;
public:
BucketDB();
~BucketDB();
const BucketState & add(const GlobalId &gid,
const BucketId &bucketId, const Timestamp ×tamp, uint32_t docSize,
SubDbType subDbType);
void add(const BucketId &bucketId, const BucketState & state);
void remove(const GlobalId &gid,
const BucketId &bucketId, const Timestamp ×tamp, uint32_t docSize,
SubDbType subDbType);
void modify(const GlobalId &gid,
const BucketId &oldBucketId, const Timestamp &oldTimestamp, uint32_t oldDocSize,
const BucketId &newBucketId, const Timestamp &newTimestamp, uint32_t newDocSize,
SubDbType subDbType);
BucketState get(const BucketId &bucketId) const;
void cacheBucket(const BucketId &bucketId);
void uncacheBucket();
bool isCachedBucket(const BucketId &bucketId) const;
storage::spi::BucketInfo cachedGetBucketInfo(const BucketId &bucketId) const;
BucketState cachedGet(const BucketId &bucketId) const;
bool hasBucket(const BucketId &bucketId) const;
void getBuckets(BucketId::List & buckets) const;
bool empty() const;
void setBucketState(const BucketId &bucketId, bool active);
void createBucket(const BucketId &bucketId);
void deleteEmptyBucket(const BucketId &bucketId);
void getActiveBuckets(BucketId::List &buckets) const;
void populateActiveBuckets(const BucketId::List &buckets, BucketId::List &fixupBuckets);
ConstMapIterator begin() const { return _map.begin(); }
ConstMapIterator end() const { return _map.end(); }
ConstMapIterator lowerBound(const BucketId &bucket) const { return _map.lower_bound(bucket); }
ConstMapIterator upperBound(const BucketId &bucket) const { return _map.upper_bound(bucket); }
size_t size() const { return _map.size(); }
bool isActiveBucket(const BucketId &bucketId) const;
BucketState *getBucketStatePtr(const BucketId &bucket);
void unloadBucket(const BucketId &bucket, const BucketState &delta);
};
}
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