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memtable_roaring_set.go
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memtable_roaring_set.go
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// _ _
// __ _____ __ ___ ___ __ _| |_ ___
// \ \ /\ / / _ \/ _` \ \ / / |/ _` | __/ _ \
// \ V V / __/ (_| |\ V /| | (_| | || __/
// \_/\_/ \___|\__,_| \_/ |_|\__,_|\__\___|
//
// Copyright © 2016 - 2024 Weaviate B.V. All rights reserved.
//
// CONTACT: hello@weaviate.io
//
package lsmkv
import (
"github.com/pkg/errors"
"github.com/weaviate/sroar"
"github.com/weaviate/weaviate/adapters/repos/db/roaringset"
)
func (m *Memtable) roaringSetAddOne(key []byte, value uint64) error {
return m.roaringSetAddList(key, []uint64{value})
}
func (m *Memtable) roaringSetAddList(key []byte, values []uint64) error {
if err := checkStrategyRoaringSet(m.strategy); err != nil {
return err
}
m.Lock()
defer m.Unlock()
if err := m.roaringSetAddCommitLog(key, roaringset.NewBitmap(values...), roaringset.NewBitmap()); err != nil {
return err
}
m.roaringSet.Insert(key, roaringset.Insert{Additions: values})
m.roaringSetAdjustMeta(len(values))
return nil
}
func (m *Memtable) roaringSetAddBitmap(key []byte, bm *sroar.Bitmap) error {
if err := checkStrategyRoaringSet(m.strategy); err != nil {
return err
}
m.Lock()
defer m.Unlock()
if err := m.roaringSetAddCommitLog(key, bm, roaringset.NewBitmap()); err != nil {
return err
}
m.roaringSet.Insert(key, roaringset.Insert{Additions: bm.ToArray()})
m.roaringSetAdjustMeta(bm.GetCardinality())
return nil
}
func (m *Memtable) roaringSetRemoveOne(key []byte, value uint64) error {
return m.roaringSetRemoveList(key, []uint64{value})
}
func (m *Memtable) roaringSetRemoveList(key []byte, values []uint64) error {
if err := checkStrategyRoaringSet(m.strategy); err != nil {
return err
}
m.Lock()
defer m.Unlock()
if err := m.roaringSetAddCommitLog(key, roaringset.NewBitmap(), roaringset.NewBitmap(values...)); err != nil {
return err
}
m.roaringSet.Insert(key, roaringset.Insert{Deletions: values})
m.roaringSetAdjustMeta(len(values))
return nil
}
func (m *Memtable) roaringSetRemoveBitmap(key []byte, bm *sroar.Bitmap) error {
if err := checkStrategyRoaringSet(m.strategy); err != nil {
return err
}
m.Lock()
defer m.Unlock()
if err := m.roaringSetAddCommitLog(key, roaringset.NewBitmap(), bm); err != nil {
return err
}
m.roaringSet.Insert(key, roaringset.Insert{Deletions: bm.ToArray()})
m.roaringSetAdjustMeta(bm.GetCardinality())
return nil
}
func (m *Memtable) roaringSetAddRemoveBitmaps(key []byte, additions *sroar.Bitmap, deletions *sroar.Bitmap) error {
if err := checkStrategyRoaringSet(m.strategy); err != nil {
return err
}
m.Lock()
defer m.Unlock()
if err := m.roaringSetAddCommitLog(key, additions, deletions); err != nil {
return err
}
m.roaringSet.Insert(key, roaringset.Insert{
Additions: additions.ToArray(),
Deletions: deletions.ToArray(),
})
m.roaringSetAdjustMeta(additions.GetCardinality() + deletions.GetCardinality())
return nil
}
func (m *Memtable) roaringSetGet(key []byte) (roaringset.BitmapLayer, error) {
if err := checkStrategyRoaringSet(m.strategy); err != nil {
return roaringset.BitmapLayer{}, err
}
m.RLock()
defer m.RUnlock()
return m.roaringSet.Get(key)
}
func (m *Memtable) roaringSetAdjustMeta(entriesChanged int) {
// in the worst case roaring bitmaps take 2 bytes per entry. A reasonable
// estimation is therefore to take the changed entries and multiply them by
// 2.
m.size += uint64(entriesChanged * 2)
m.metrics.size(m.size)
m.updateDirtyAt()
}
func (m *Memtable) roaringSetAddCommitLog(key []byte, additions *sroar.Bitmap, deletions *sroar.Bitmap) error {
if node, err := roaringset.NewSegmentNode(key, additions, deletions); err != nil {
return errors.Wrap(err, "create node for commit log")
} else if err := m.commitlog.add(node); err != nil {
return errors.Wrap(err, "add node to commit log")
}
return nil
}