/
manage_index.go
95 lines (76 loc) · 2.18 KB
/
manage_index.go
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package index
import (
"fmt"
"github.com/vmihailenco/msgpack"
"github.com/huichen/sego"
"github.com/mnhkahn/gogogo/logger"
"github.com/mnhkahn/gogogo/panicer"
"github.com/mnhkahn/peanut/util"
)
func (index *Index) createCurIdIfNotExists(pk string) (uint32, error) {
docIds, err := index.SearchPks(pk)
if err != nil {
return 0, err
} else if len(docIds) == 1 {
logger.Infof("reuse docId: %d, pk: %s", docIds[0], pk)
return docIds[0], nil
}
return index.getCurId(), nil
}
func (index *Index) getCurId() uint32 {
curId, valid := index.status.NextClear(0)
if valid {
return curId
}
return index.status.Len()
}
func (index *Index) AddDocument(doc *Document) error {
defer panicer.RecoverDebug(doc.PK)
if doc == nil {
return fmt.Errorf("document is nil")
}
var err error
// ========== Lock =============
index.documentLock.Lock()
docId, err := index.createCurIdIfNotExists(doc.PK)
logger.Infof("add document doc: %d, %v", docId, doc.PK)
if err != nil {
index.documentLock.Unlock()
return err
}
index.status.Set(docId)
err = index.pk.AppendBytesUints([]byte(doc.PK), docId)
if err != nil {
index.documentLock.Unlock()
return err
}
if err = index.extendMaybe(docId); err != nil {
index.documentLock.Unlock()
return fmt.Errorf("error: %s docId: %v", err.Error(), doc)
}
b, _ := msgpack.Marshal(doc)
err = index.documents.SetUIntBytes(docId, b)
if err != nil {
return err
}
index.documentLock.Unlock()
// ========== Lock =============
// add title index
for _, t := range sego.SegmentsToSlice(index.segmenter.Segment([]byte(doc.Title)), false) {
index.title.AppendBytesUints([]byte(t), docId)
}
for _, t := range sego.SegmentsToSlice(index.segmenter.Segment([]byte(doc.Brief)), false) {
index.brief.AppendBytesUints([]byte(t), docId)
}
for _, t := range sego.SegmentsToSlice(index.segmenter.Segment([]byte(doc.FullText)), false) {
index.fullText.AppendBytesUints([]byte(t), docId)
}
for _, tag := range doc.Tags {
index.tag.AppendBytesUints(util.StrToLowerBytes(tag), docId)
}
index.category.AppendBytesUints(util.StrToLowerBytes(doc.Category), docId)
return index.Commit()
}
func (index *Index) Commit() error {
return index.status.Backup()
}