mirror of
https://gitee.com/milvus-io/milvus.git
synced 2024-12-04 12:59:23 +08:00
320 lines
8.6 KiB
Go
320 lines
8.6 KiB
Go
// Copyright (C) 2019-2020 Zilliz. All rights reserved.
|
|
//
|
|
// Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance
|
|
// with the License. You may obtain a copy of the License at
|
|
//
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software distributed under the License
|
|
// is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
|
|
// or implied. See the License for the specific language governing permissions and limitations under the License.
|
|
package datacoord
|
|
|
|
import (
|
|
"fmt"
|
|
"sync"
|
|
|
|
"github.com/golang/protobuf/proto"
|
|
"github.com/milvus-io/milvus/internal/kv"
|
|
|
|
"github.com/milvus-io/milvus/internal/proto/commonpb"
|
|
"github.com/milvus-io/milvus/internal/proto/datapb"
|
|
)
|
|
|
|
const (
|
|
metaPrefix = "datacoord-meta"
|
|
segmentPrefix = metaPrefix + "/s"
|
|
)
|
|
|
|
type meta struct {
|
|
sync.RWMutex
|
|
client kv.TxnKV // client of a reliable kv service, i.e. etcd client
|
|
collections map[UniqueID]*datapb.CollectionInfo // collection id to collection info
|
|
segments *SegmentsInfo // segment id to segment info
|
|
}
|
|
|
|
func newMeta(kv kv.TxnKV) (*meta, error) {
|
|
mt := &meta{
|
|
client: kv,
|
|
collections: make(map[UniqueID]*datapb.CollectionInfo),
|
|
segments: NewSegmentsInfo(),
|
|
}
|
|
err := mt.reloadFromKV()
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
return mt, nil
|
|
}
|
|
|
|
func (m *meta) reloadFromKV() error {
|
|
_, values, err := m.client.LoadWithPrefix(segmentPrefix)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
for _, value := range values {
|
|
segmentInfo := &datapb.SegmentInfo{}
|
|
err = proto.UnmarshalText(value, segmentInfo)
|
|
if err != nil {
|
|
return fmt.Errorf("DataCoord reloadFromKV UnMarshalText datapb.SegmentInfo err:%w", err)
|
|
}
|
|
m.segments.SetSegment(segmentInfo.GetID(), segmentInfo)
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
func (m *meta) AddCollection(collection *datapb.CollectionInfo) {
|
|
m.Lock()
|
|
defer m.Unlock()
|
|
m.collections[collection.ID] = collection
|
|
}
|
|
|
|
func (m *meta) GetCollection(collectionID UniqueID) *datapb.CollectionInfo {
|
|
m.RLock()
|
|
defer m.RUnlock()
|
|
collection, ok := m.collections[collectionID]
|
|
if !ok {
|
|
return nil
|
|
}
|
|
return collection
|
|
}
|
|
|
|
func (m *meta) GetNumRowsOfCollection(collectionID UniqueID) int64 {
|
|
m.RLock()
|
|
defer m.RUnlock()
|
|
var ret int64 = 0
|
|
segments := m.segments.GetSegments()
|
|
for _, segment := range segments {
|
|
if segment.GetCollectionID() == collectionID {
|
|
ret += segment.GetNumOfRows()
|
|
}
|
|
}
|
|
return ret
|
|
}
|
|
|
|
func (m *meta) AddSegment(segment *datapb.SegmentInfo) error {
|
|
m.Lock()
|
|
defer m.Unlock()
|
|
m.segments.SetSegment(segment.GetID(), segment)
|
|
if err := m.saveSegmentInfo(segment); err != nil {
|
|
return err
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func (m *meta) SetRowCount(segmentID UniqueID, rowCount int64) error {
|
|
m.Lock()
|
|
defer m.Unlock()
|
|
m.segments.SetRowCount(segmentID, rowCount)
|
|
if segment := m.segments.GetSegment(segmentID); segment != nil {
|
|
return m.saveSegmentInfo(segment)
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func (m *meta) SetLastExpireTime(segmentID UniqueID, expireTs Timestamp) error {
|
|
m.Lock()
|
|
defer m.Unlock()
|
|
m.segments.SetLasteExpiraTime(segmentID, expireTs)
|
|
if segment := m.segments.GetSegment(segmentID); segment != nil {
|
|
return m.saveSegmentInfo(segment)
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func (m *meta) DropSegment(segmentID UniqueID) error {
|
|
m.Lock()
|
|
defer m.Unlock()
|
|
segment := m.segments.GetSegment(segmentID)
|
|
m.segments.DropSegment(segmentID)
|
|
if err := m.removeSegmentInfo(segment); err != nil {
|
|
return err
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func (m *meta) GetSegment(segID UniqueID) *datapb.SegmentInfo {
|
|
m.RLock()
|
|
defer m.RUnlock()
|
|
return m.segments.GetSegment(segID)
|
|
}
|
|
|
|
func (m *meta) SetState(segmentID UniqueID, state commonpb.SegmentState) error {
|
|
m.Lock()
|
|
defer m.Unlock()
|
|
m.segments.SetState(segmentID, state)
|
|
if segInfo := m.segments.GetSegment(segmentID); segInfo != nil {
|
|
return m.saveSegmentInfo(segInfo)
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func (m *meta) SaveBinlogAndCheckPoints(segID UniqueID, flushed bool,
|
|
binlogs map[string]string, checkpoints []*datapb.CheckPoint,
|
|
startPositions []*datapb.SegmentStartPosition) error {
|
|
m.Lock()
|
|
defer m.Unlock()
|
|
kv := make(map[string]string)
|
|
for k, v := range binlogs {
|
|
kv[k] = v
|
|
}
|
|
if flushed {
|
|
m.segments.SetState(segID, commonpb.SegmentState_Flushing)
|
|
}
|
|
|
|
modSegments := make([]UniqueID, 0)
|
|
for _, pos := range startPositions {
|
|
if len(pos.GetStartPosition().GetMsgID()) != 0 {
|
|
continue
|
|
}
|
|
if segment := m.segments.GetSegment(pos.GetSegmentID()); segment != nil {
|
|
m.segments.SetStartPosition(pos.GetSegmentID(), pos.GetStartPosition())
|
|
modSegments = append(modSegments, pos.GetSegmentID())
|
|
}
|
|
}
|
|
|
|
for _, cp := range checkpoints {
|
|
if segment := m.segments.GetSegment(cp.GetSegmentID()); segment != nil {
|
|
if segment.DmlPosition != nil && segment.DmlPosition.Timestamp >= cp.Position.Timestamp {
|
|
// segment position in etcd is larger than checkpoint, then dont change it
|
|
continue
|
|
}
|
|
m.segments.SetDmlPositino(cp.GetSegmentID(), cp.GetPosition())
|
|
m.segments.SetRowCount(cp.GetSegmentID(), cp.GetNumOfRows())
|
|
modSegments = append(modSegments, segment.GetID())
|
|
}
|
|
}
|
|
|
|
for _, id := range modSegments {
|
|
if segment := m.segments.GetSegment(id); segment != nil {
|
|
segBytes := proto.MarshalTextString(segment)
|
|
key := buildSegmentPath(segment.GetCollectionID(), segment.GetPartitionID(), segment.GetID())
|
|
kv[key] = segBytes
|
|
}
|
|
}
|
|
|
|
if err := m.saveKvTxn(kv); err != nil {
|
|
return err
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func (m *meta) GetSegmentsByChannel(dmlCh string) []*datapb.SegmentInfo {
|
|
m.RLock()
|
|
defer m.RUnlock()
|
|
infos := make([]*datapb.SegmentInfo, 0)
|
|
segments := m.segments.GetSegments()
|
|
for _, segment := range segments {
|
|
if segment.InsertChannel != dmlCh {
|
|
continue
|
|
}
|
|
infos = append(infos, segment)
|
|
}
|
|
return infos
|
|
}
|
|
|
|
func (m *meta) GetSegmentsOfCollection(collectionID UniqueID) []UniqueID {
|
|
m.RLock()
|
|
defer m.RUnlock()
|
|
ret := make([]UniqueID, 0)
|
|
segments := m.segments.GetSegments()
|
|
for _, info := range segments {
|
|
if info.CollectionID == collectionID {
|
|
ret = append(ret, info.ID)
|
|
}
|
|
}
|
|
return ret
|
|
}
|
|
|
|
func (m *meta) GetSegmentsOfPartition(collectionID, partitionID UniqueID) []UniqueID {
|
|
m.RLock()
|
|
defer m.RUnlock()
|
|
ret := make([]UniqueID, 0)
|
|
segments := m.segments.GetSegments()
|
|
for _, info := range segments {
|
|
if info.CollectionID == collectionID && info.PartitionID == partitionID {
|
|
ret = append(ret, info.ID)
|
|
}
|
|
}
|
|
return ret
|
|
}
|
|
|
|
func (m *meta) GetNumRowsOfPartition(collectionID UniqueID, partitionID UniqueID) int64 {
|
|
m.RLock()
|
|
defer m.RUnlock()
|
|
var ret int64 = 0
|
|
segments := m.segments.GetSegments()
|
|
for _, info := range segments {
|
|
if info.CollectionID == collectionID && info.PartitionID == partitionID {
|
|
ret += info.NumOfRows
|
|
}
|
|
}
|
|
return ret
|
|
}
|
|
|
|
func (m *meta) GetUnFlushedSegments() []*datapb.SegmentInfo {
|
|
m.RLock()
|
|
defer m.RUnlock()
|
|
ret := make([]*datapb.SegmentInfo, 0)
|
|
segments := m.segments.GetSegments()
|
|
for _, info := range segments {
|
|
if info.State != commonpb.SegmentState_Flushing && info.State != commonpb.SegmentState_Flushed {
|
|
ret = append(ret, info)
|
|
}
|
|
}
|
|
return ret
|
|
}
|
|
|
|
func (m *meta) GetFlushingSegments() []*datapb.SegmentInfo {
|
|
m.RLock()
|
|
defer m.RUnlock()
|
|
ret := make([]*datapb.SegmentInfo, 0)
|
|
segments := m.segments.GetSegments()
|
|
for _, info := range segments {
|
|
if info.State == commonpb.SegmentState_Flushing {
|
|
ret = append(ret, info)
|
|
}
|
|
}
|
|
return ret
|
|
}
|
|
|
|
func (m *meta) saveSegmentInfo(segment *datapb.SegmentInfo) error {
|
|
segBytes := proto.MarshalTextString(segment)
|
|
|
|
key := buildSegmentPath(segment.GetCollectionID(), segment.GetPartitionID(), segment.GetID())
|
|
return m.client.Save(key, segBytes)
|
|
}
|
|
|
|
func (m *meta) removeSegmentInfo(segment *datapb.SegmentInfo) error {
|
|
key := buildSegmentPath(segment.GetCollectionID(), segment.GetPartitionID(), segment.GetID())
|
|
return m.client.Remove(key)
|
|
}
|
|
|
|
func (m *meta) saveKvTxn(kv map[string]string) error {
|
|
return m.client.MultiSave(kv)
|
|
}
|
|
|
|
func buildSegmentPath(collectionID UniqueID, partitionID UniqueID, segmentID UniqueID) string {
|
|
return fmt.Sprintf("%s/%d/%d/%d", segmentPrefix, collectionID, partitionID, segmentID)
|
|
}
|
|
|
|
func buildCollectionPath(collectionID UniqueID) string {
|
|
return fmt.Sprintf("%s/%d/", segmentPrefix, collectionID)
|
|
}
|
|
|
|
func buildPartitionPath(collectionID UniqueID, partitionID UniqueID) string {
|
|
return fmt.Sprintf("%s/%d/%d/", segmentPrefix, collectionID, partitionID)
|
|
}
|
|
|
|
func buildSegment(collectionID UniqueID, partitionID UniqueID, segmentID UniqueID, channelName string) *datapb.SegmentInfo {
|
|
return &datapb.SegmentInfo{
|
|
ID: segmentID,
|
|
CollectionID: collectionID,
|
|
PartitionID: partitionID,
|
|
InsertChannel: channelName,
|
|
NumOfRows: 0,
|
|
State: commonpb.SegmentState_Growing,
|
|
}
|
|
}
|