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commitlogger_parser_roaringset.go
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commitlogger_parser_roaringset.go
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// _ _
// __ _____ __ ___ ___ __ _| |_ ___
// \ \ /\ / / _ \/ _` \ \ / / |/ _` | __/ _ \
// \ V V / __/ (_| |\ V /| | (_| | || __/
// \_/\_/ \___|\__,_| \_/ |_|\__,_|\__\___|
//
// Copyright © 2016 - 2024 Weaviate B.V. All rights reserved.
//
// CONTACT: hello@weaviate.io
//
package lsmkv
import (
"encoding/binary"
"fmt"
"io"
"github.com/pkg/errors"
"github.com/weaviate/weaviate/adapters/repos/db/roaringset"
)
func (p *commitloggerParser) doRoaringSet() error {
for {
var commitType CommitType
err := binary.Read(p.checksumReader, binary.LittleEndian, &commitType)
if errors.Is(err, io.EOF) {
break
}
if err != nil {
return errors.Wrap(err, "read commit type")
}
if !CommitTypeRoaringSet.Is(commitType) {
return errors.Errorf("found a %s commit on a roaringset bucket", commitType.String())
}
var version uint8
err = binary.Read(p.checksumReader, binary.LittleEndian, &version)
if err != nil {
return errors.Wrap(err, "read commit version")
}
switch version {
case 0:
{
err = p.parseRoaringSetNodeV0()
}
case 1:
{
err = p.parseRoaringSetNodeV1()
}
default:
{
return fmt.Errorf("unsupported commit version %d", version)
}
}
if err != nil {
return err
}
}
return nil
}
func (p *commitloggerParser) parseRoaringSetNodeV0() error {
return p.parseRoaringSetNode(p.reader)
}
func (p *commitloggerParser) parseRoaringSetNodeV1() error {
reader, err := p.doRecord()
if err != nil {
return err
}
return p.parseRoaringSetNode(reader)
}
func (p *commitloggerParser) parseRoaringSetNode(reader io.Reader) error {
lenBuf := make([]byte, 8)
if _, err := io.ReadFull(reader, lenBuf); err != nil {
return errors.Wrap(err, "read segment len")
}
segmentLen := binary.LittleEndian.Uint64(lenBuf)
segBuf := make([]byte, segmentLen)
copy(segBuf, lenBuf)
if _, err := io.ReadFull(reader, segBuf[8:]); err != nil {
return errors.Wrap(err, "read segment contents")
}
segment := roaringset.NewSegmentNodeFromBuffer(segBuf)
key := segment.PrimaryKey()
if err := p.memtable.roaringSetAddRemoveBitmaps(key, segment.Additions(), segment.Deletions()); err != nil {
return errors.Wrap(err, "add/remove bitmaps")
}
return nil
}