mirror of
https://gitee.com/milvus-io/milvus.git
synced 2024-12-04 21:09:06 +08:00
410 lines
10 KiB
Go
410 lines
10 KiB
Go
package querynode
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import (
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"context"
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"errors"
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"fmt"
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"log"
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"path"
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"sort"
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"strconv"
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"strings"
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"sync"
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"time"
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"github.com/zilliztech/milvus-distributed/internal/kv"
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minioKV "github.com/zilliztech/milvus-distributed/internal/kv/minio"
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"github.com/zilliztech/milvus-distributed/internal/msgstream/util"
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"github.com/zilliztech/milvus-distributed/internal/proto/commonpb"
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"github.com/zilliztech/milvus-distributed/internal/proto/indexpb"
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"github.com/zilliztech/milvus-distributed/internal/proto/internalpb2"
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"github.com/zilliztech/milvus-distributed/internal/proto/milvuspb"
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"github.com/zilliztech/milvus-distributed/internal/storage"
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)
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type indexLoader struct {
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replica collectionReplica
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fieldIndexes map[string][]*internalpb2.IndexStats
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fieldStatsChan chan []*internalpb2.FieldStats
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masterClient MasterServiceInterface
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indexClient IndexServiceInterface
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kv kv.Base // minio kv
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}
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type loadIndex struct {
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segmentID UniqueID
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fieldID int64
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indexPaths []string
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}
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func (loader *indexLoader) doLoadIndex(wg *sync.WaitGroup) {
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collectionIDs, _, segmentIDs := loader.replica.getEnabledSealedSegmentsBySegmentType(segTypeSealed)
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if len(collectionIDs) <= 0 {
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return
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}
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fmt.Println("do load index for sealed segments:", segmentIDs)
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for i := range collectionIDs {
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// we don't need index id yet
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_, buildID, err := loader.getIndexInfo(collectionIDs[i], segmentIDs[i])
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if err != nil {
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indexPaths, err := loader.getIndexPaths(buildID)
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if err != nil {
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log.Println(err)
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continue
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}
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err = loader.loadIndexDelayed(collectionIDs[i], segmentIDs[i], indexPaths)
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if err != nil {
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log.Println(err)
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continue
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}
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}
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}
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// sendQueryNodeStats
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err := loader.sendQueryNodeStats()
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if err != nil {
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log.Println(err)
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wg.Done()
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return
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}
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wg.Done()
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}
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func (loader *indexLoader) execute(l *loadIndex) error {
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// 1. use msg's index paths to get index bytes
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var err error
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var indexBuffer [][]byte
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var indexParams indexParam
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var indexName string
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var indexID UniqueID
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fn := func() error {
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indexBuffer, indexParams, indexName, indexID, err = loader.loadIndex(l.indexPaths)
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if err != nil {
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return err
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}
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return nil
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}
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err = util.Retry(5, time.Millisecond*200, fn)
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if err != nil {
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return err
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}
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ok, err := loader.checkIndexReady(indexParams, l)
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if err != nil {
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return err
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}
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if ok {
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// no error
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return errors.New("")
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}
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// 2. use index bytes and index path to update segment
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err = loader.updateSegmentIndex(indexParams, indexBuffer, l)
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if err != nil {
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return err
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}
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// 3. update segment index stats
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err = loader.updateSegmentIndexStats(indexParams, indexName, indexID, l)
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if err != nil {
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return err
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}
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fmt.Println("load index done")
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return nil
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}
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func (loader *indexLoader) printIndexParams(index []*commonpb.KeyValuePair) {
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fmt.Println("=================================================")
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for i := 0; i < len(index); i++ {
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fmt.Println(index[i])
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}
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}
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func (loader *indexLoader) indexParamsEqual(index1 []*commonpb.KeyValuePair, index2 []*commonpb.KeyValuePair) bool {
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if len(index1) != len(index2) {
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return false
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}
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for i := 0; i < len(index1); i++ {
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kv1 := *index1[i]
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kv2 := *index2[i]
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if kv1.Key != kv2.Key || kv1.Value != kv2.Value {
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return false
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}
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}
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return true
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}
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func (loader *indexLoader) fieldsStatsIDs2Key(collectionID UniqueID, fieldID UniqueID) string {
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return strconv.FormatInt(collectionID, 10) + "/" + strconv.FormatInt(fieldID, 10)
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}
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func (loader *indexLoader) fieldsStatsKey2IDs(key string) (UniqueID, UniqueID, error) {
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ids := strings.Split(key, "/")
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if len(ids) != 2 {
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return 0, 0, errors.New("illegal fieldsStatsKey")
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}
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collectionID, err := strconv.ParseInt(ids[0], 10, 64)
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if err != nil {
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return 0, 0, err
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}
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fieldID, err := strconv.ParseInt(ids[1], 10, 64)
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if err != nil {
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return 0, 0, err
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}
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return collectionID, fieldID, nil
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}
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func (loader *indexLoader) updateSegmentIndexStats(indexParams indexParam, indexName string, indexID UniqueID, l *loadIndex) error {
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targetSegment, err := loader.replica.getSegmentByID(l.segmentID)
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if err != nil {
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return err
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}
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fieldStatsKey := loader.fieldsStatsIDs2Key(targetSegment.collectionID, l.fieldID)
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_, ok := loader.fieldIndexes[fieldStatsKey]
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newIndexParams := make([]*commonpb.KeyValuePair, 0)
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for k, v := range indexParams {
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newIndexParams = append(newIndexParams, &commonpb.KeyValuePair{
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Key: k,
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Value: v,
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})
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}
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// sort index params by key
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sort.Slice(newIndexParams, func(i, j int) bool { return newIndexParams[i].Key < newIndexParams[j].Key })
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if !ok {
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loader.fieldIndexes[fieldStatsKey] = make([]*internalpb2.IndexStats, 0)
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loader.fieldIndexes[fieldStatsKey] = append(loader.fieldIndexes[fieldStatsKey],
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&internalpb2.IndexStats{
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IndexParams: newIndexParams,
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NumRelatedSegments: 1,
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})
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} else {
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isNewIndex := true
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for _, index := range loader.fieldIndexes[fieldStatsKey] {
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if loader.indexParamsEqual(newIndexParams, index.IndexParams) {
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index.NumRelatedSegments++
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isNewIndex = false
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}
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}
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if isNewIndex {
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loader.fieldIndexes[fieldStatsKey] = append(loader.fieldIndexes[fieldStatsKey],
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&internalpb2.IndexStats{
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IndexParams: newIndexParams,
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NumRelatedSegments: 1,
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})
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}
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}
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err = targetSegment.setIndexParam(l.fieldID, newIndexParams)
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if err != nil {
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return err
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}
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targetSegment.setIndexName(indexName)
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targetSegment.setIndexID(indexID)
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return nil
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}
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func (loader *indexLoader) loadIndex(indexPath []string) ([][]byte, indexParam, string, UniqueID, error) {
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index := make([][]byte, 0)
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var indexParams indexParam
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var indexName string
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var indexID UniqueID
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for _, p := range indexPath {
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fmt.Println("load path = ", indexPath)
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indexPiece, err := loader.kv.Load(p)
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if err != nil {
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return nil, nil, "", -1, err
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}
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// get index params when detecting indexParamPrefix
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if path.Base(p) == storage.IndexParamsFile {
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indexCodec := storage.NewIndexCodec()
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_, indexParams, indexName, indexID, err = indexCodec.Deserialize([]*storage.Blob{
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{
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Key: storage.IndexParamsFile,
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Value: []byte(indexPiece),
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},
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})
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if err != nil {
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return nil, nil, "", -1, err
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}
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} else {
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index = append(index, []byte(indexPiece))
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}
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}
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if len(indexParams) <= 0 {
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return nil, nil, "", -1, errors.New("cannot find index param")
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}
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return index, indexParams, indexName, indexID, nil
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}
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func (loader *indexLoader) updateSegmentIndex(indexParams indexParam, bytesIndex [][]byte, l *loadIndex) error {
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segment, err := loader.replica.getSegmentByID(l.segmentID)
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if err != nil {
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return err
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}
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loadIndexInfo, err := newLoadIndexInfo()
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defer deleteLoadIndexInfo(loadIndexInfo)
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if err != nil {
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return err
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}
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err = loadIndexInfo.appendFieldInfo(l.fieldID)
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if err != nil {
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return err
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}
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for k, v := range indexParams {
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err = loadIndexInfo.appendIndexParam(k, v)
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if err != nil {
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return err
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}
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}
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err = loadIndexInfo.appendIndex(bytesIndex, l.indexPaths)
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if err != nil {
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return err
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}
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return segment.updateSegmentIndex(loadIndexInfo)
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}
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func (loader *indexLoader) sendQueryNodeStats() error {
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resultFieldsStats := make([]*internalpb2.FieldStats, 0)
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for fieldStatsKey, indexStats := range loader.fieldIndexes {
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colID, fieldID, err := loader.fieldsStatsKey2IDs(fieldStatsKey)
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if err != nil {
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return err
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}
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fieldStats := internalpb2.FieldStats{
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CollectionID: colID,
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FieldID: fieldID,
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IndexStats: indexStats,
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}
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resultFieldsStats = append(resultFieldsStats, &fieldStats)
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}
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loader.fieldStatsChan <- resultFieldsStats
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fmt.Println("sent field stats")
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return nil
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}
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func (loader *indexLoader) checkIndexReady(indexParams indexParam, l *loadIndex) (bool, error) {
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segment, err := loader.replica.getSegmentByID(l.segmentID)
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if err != nil {
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return false, err
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}
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if !segment.matchIndexParam(l.fieldID, indexParams) {
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return false, nil
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}
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return true, nil
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}
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func (loader *indexLoader) getIndexInfo(collectionID UniqueID, segmentID UniqueID) (UniqueID, UniqueID, error) {
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req := &milvuspb.DescribeSegmentRequest{
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Base: &commonpb.MsgBase{
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MsgType: commonpb.MsgType_kDescribeSegment,
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},
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CollectionID: collectionID,
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SegmentID: segmentID,
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}
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response, err := loader.masterClient.DescribeSegment(req)
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if err != nil {
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return 0, 0, err
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}
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return response.IndexID, response.BuildID, nil
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}
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func (loader *indexLoader) getIndexPaths(indexBuildID UniqueID) ([]string, error) {
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if loader.indexClient == nil {
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return nil, errors.New("null index service client")
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}
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indexFilePathRequest := &indexpb.IndexFilePathsRequest{
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// TODO: rename indexIDs to buildIDs
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IndexBuildIDs: []UniqueID{indexBuildID},
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}
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pathResponse, err := loader.indexClient.GetIndexFilePaths(indexFilePathRequest)
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if err != nil || pathResponse.Status.ErrorCode != commonpb.ErrorCode_SUCCESS {
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return nil, err
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}
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if len(pathResponse.FilePaths) <= 0 {
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return nil, errors.New("illegal index file paths")
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}
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return pathResponse.FilePaths[0].IndexFilePaths, nil
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}
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func (loader *indexLoader) loadIndexImmediate(segment *Segment, indexPaths []string) error {
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// get vector field ids from schema to load index
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vecFieldIDs, err := loader.replica.getVecFieldIDsByCollectionID(segment.collectionID)
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if err != nil {
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return err
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}
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for _, id := range vecFieldIDs {
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l := &loadIndex{
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segmentID: segment.ID(),
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fieldID: id,
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indexPaths: indexPaths,
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}
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err = loader.execute(l)
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if err != nil {
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return err
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}
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}
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return nil
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}
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func (loader *indexLoader) loadIndexDelayed(collectionID, segmentID UniqueID, indexPaths []string) error {
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// get vector field ids from schema to load index
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vecFieldIDs, err := loader.replica.getVecFieldIDsByCollectionID(collectionID)
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if err != nil {
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return err
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}
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for _, id := range vecFieldIDs {
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l := &loadIndex{
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segmentID: segmentID,
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fieldID: id,
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indexPaths: indexPaths,
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}
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err = loader.execute(l)
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if err != nil {
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return err
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}
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}
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return nil
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}
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func newIndexLoader(ctx context.Context, masterClient MasterServiceInterface, indexClient IndexServiceInterface, replica collectionReplica) *indexLoader {
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option := &minioKV.Option{
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Address: Params.MinioEndPoint,
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AccessKeyID: Params.MinioAccessKeyID,
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SecretAccessKeyID: Params.MinioSecretAccessKey,
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UseSSL: Params.MinioUseSSLStr,
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CreateBucket: true,
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BucketName: Params.MinioBucketName,
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}
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client, err := minioKV.NewMinIOKV(ctx, option)
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if err != nil {
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panic(err)
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}
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return &indexLoader{
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replica: replica,
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fieldIndexes: make(map[string][]*internalpb2.IndexStats),
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fieldStatsChan: make(chan []*internalpb2.FieldStats, 1),
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masterClient: masterClient,
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indexClient: indexClient,
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kv: client,
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}
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}
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