mirror of
https://gitee.com/milvus-io/milvus.git
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ba02d54a30
issue: #32466 this PR enhance that when shard location changed, update proxy's shard leader cache. in case of query node failover case, proxy can find replica recover --------- Signed-off-by: Wei Liu <wei.liu@zilliz.com>
1194 lines
39 KiB
Go
1194 lines
39 KiB
Go
// Licensed to the LF AI & Data foundation under one
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// or more contributor license agreements. See the NOTICE file
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// distributed with this work for additional information
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// regarding copyright ownership. The ASF licenses this file
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// to you under the Apache License, Version 2.0 (the
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// "License"); you may not use this file except in compliance
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// with the License. You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package proxy
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import (
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"context"
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"fmt"
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"math/rand"
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"strconv"
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"strings"
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"sync"
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"github.com/cockroachdb/errors"
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"github.com/samber/lo"
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"go.uber.org/atomic"
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"go.uber.org/zap"
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"github.com/milvus-io/milvus-proto/go-api/v2/commonpb"
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"github.com/milvus-io/milvus-proto/go-api/v2/milvuspb"
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"github.com/milvus-io/milvus-proto/go-api/v2/schemapb"
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"github.com/milvus-io/milvus/internal/proto/internalpb"
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"github.com/milvus-io/milvus/internal/proto/querypb"
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"github.com/milvus-io/milvus/internal/proto/rootcoordpb"
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"github.com/milvus-io/milvus/internal/types"
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"github.com/milvus-io/milvus/pkg/common"
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"github.com/milvus-io/milvus/pkg/log"
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"github.com/milvus-io/milvus/pkg/metrics"
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"github.com/milvus-io/milvus/pkg/util"
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"github.com/milvus-io/milvus/pkg/util/commonpbutil"
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"github.com/milvus-io/milvus/pkg/util/conc"
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"github.com/milvus-io/milvus/pkg/util/funcutil"
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"github.com/milvus-io/milvus/pkg/util/merr"
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"github.com/milvus-io/milvus/pkg/util/paramtable"
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"github.com/milvus-io/milvus/pkg/util/timerecord"
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"github.com/milvus-io/milvus/pkg/util/typeutil"
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)
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// Cache is the interface for system meta data cache
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//
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//go:generate mockery --name=Cache --filename=mock_cache_test.go --outpkg=proxy --output=. --inpackage --structname=MockCache --with-expecter
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type Cache interface {
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// GetCollectionID get collection's id by name.
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GetCollectionID(ctx context.Context, database, collectionName string) (typeutil.UniqueID, error)
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// GetCollectionName get collection's name and database by id
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GetCollectionName(ctx context.Context, database string, collectionID int64) (string, error)
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// GetCollectionInfo get collection's information by name or collection id, such as schema, and etc.
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GetCollectionInfo(ctx context.Context, database, collectionName string, collectionID int64) (*collectionBasicInfo, error)
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// GetCollectionNamesByID get collection name and database name by collection id
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GetCollectionNamesByID(ctx context.Context, collectionID []UniqueID) ([]string, []string, error)
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// GetPartitionID get partition's identifier of specific collection.
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GetPartitionID(ctx context.Context, database, collectionName string, partitionName string) (typeutil.UniqueID, error)
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// GetPartitions get all partitions' id of specific collection.
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GetPartitions(ctx context.Context, database, collectionName string) (map[string]typeutil.UniqueID, error)
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// GetPartitionInfo get partition's info.
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GetPartitionInfo(ctx context.Context, database, collectionName string, partitionName string) (*partitionInfo, error)
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// GetPartitionsIndex returns a partition names in partition key indexed order.
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GetPartitionsIndex(ctx context.Context, database, collectionName string) ([]string, error)
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// GetCollectionSchema get collection's schema.
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GetCollectionSchema(ctx context.Context, database, collectionName string) (*schemaInfo, error)
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GetShards(ctx context.Context, withCache bool, database, collectionName string, collectionID int64) (map[string][]nodeInfo, error)
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DeprecateShardCache(database, collectionName string)
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InvalidateShardLeaderCache(collections []int64)
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RemoveCollection(ctx context.Context, database, collectionName string)
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RemoveCollectionsByID(ctx context.Context, collectionID UniqueID) []string
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RemovePartition(ctx context.Context, database, collectionName string, partitionName string)
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// GetCredentialInfo operate credential cache
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GetCredentialInfo(ctx context.Context, username string) (*internalpb.CredentialInfo, error)
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RemoveCredential(username string)
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UpdateCredential(credInfo *internalpb.CredentialInfo)
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GetPrivilegeInfo(ctx context.Context) []string
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GetUserRole(username string) []string
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RefreshPolicyInfo(op typeutil.CacheOp) error
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InitPolicyInfo(info []string, userRoles []string)
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RemoveDatabase(ctx context.Context, database string)
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HasDatabase(ctx context.Context, database string) bool
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GetDatabaseInfo(ctx context.Context, database string) (*databaseInfo, error)
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// AllocID is only using on requests that need to skip timestamp allocation, don't overuse it.
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AllocID(ctx context.Context) (int64, error)
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}
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type collectionBasicInfo struct {
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collID typeutil.UniqueID
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createdTimestamp uint64
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createdUtcTimestamp uint64
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consistencyLevel commonpb.ConsistencyLevel
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}
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type collectionInfo struct {
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collID typeutil.UniqueID
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schema *schemaInfo
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partInfo *partitionInfos
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createdTimestamp uint64
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createdUtcTimestamp uint64
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consistencyLevel commonpb.ConsistencyLevel
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}
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type databaseInfo struct {
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dbID typeutil.UniqueID
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createdTimestamp uint64
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}
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// schemaInfo is a helper function wraps *schemapb.CollectionSchema
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// with extra fields mapping and methods
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type schemaInfo struct {
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*schemapb.CollectionSchema
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fieldMap *typeutil.ConcurrentMap[string, int64] // field name to id mapping
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hasPartitionKeyField bool
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pkField *schemapb.FieldSchema
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schemaHelper *typeutil.SchemaHelper
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}
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func newSchemaInfo(schema *schemapb.CollectionSchema) *schemaInfo {
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fieldMap := typeutil.NewConcurrentMap[string, int64]()
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hasPartitionkey := false
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var pkField *schemapb.FieldSchema
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for _, field := range schema.GetFields() {
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fieldMap.Insert(field.GetName(), field.GetFieldID())
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if field.GetIsPartitionKey() {
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hasPartitionkey = true
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}
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if field.GetIsPrimaryKey() {
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pkField = field
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}
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}
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// schema shall be verified before
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schemaHelper, _ := typeutil.CreateSchemaHelper(schema)
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return &schemaInfo{
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CollectionSchema: schema,
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fieldMap: fieldMap,
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hasPartitionKeyField: hasPartitionkey,
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pkField: pkField,
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schemaHelper: schemaHelper,
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}
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}
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func (s *schemaInfo) MapFieldID(name string) (int64, bool) {
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return s.fieldMap.Get(name)
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}
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func (s *schemaInfo) IsPartitionKeyCollection() bool {
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return s.hasPartitionKeyField
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}
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func (s *schemaInfo) GetPkField() (*schemapb.FieldSchema, error) {
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if s.pkField == nil {
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return nil, merr.WrapErrServiceInternal("pk field not found")
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}
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return s.pkField, nil
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}
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// partitionInfos contains the cached collection partition informations.
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type partitionInfos struct {
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partitionInfos []*partitionInfo
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name2Info map[string]*partitionInfo // map[int64]*partitionInfo
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name2ID map[string]int64 // map[int64]*partitionInfo
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indexedPartitionNames []string
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}
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// partitionInfo single model for partition information.
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type partitionInfo struct {
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name string
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partitionID typeutil.UniqueID
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createdTimestamp uint64
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createdUtcTimestamp uint64
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}
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// getBasicInfo get a basic info by deep copy.
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func (info *collectionInfo) getBasicInfo() *collectionBasicInfo {
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// Do a deep copy for all fields.
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basicInfo := &collectionBasicInfo{
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collID: info.collID,
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createdTimestamp: info.createdTimestamp,
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createdUtcTimestamp: info.createdUtcTimestamp,
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consistencyLevel: info.consistencyLevel,
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}
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return basicInfo
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}
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func (info *collectionInfo) isCollectionCached() bool {
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return info != nil && info.collID != UniqueID(0) && info.schema != nil
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}
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// shardLeaders wraps shard leader mapping for iteration.
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type shardLeaders struct {
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idx *atomic.Int64
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deprecated *atomic.Bool
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collectionID int64
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shardLeaders map[string][]nodeInfo
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}
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type shardLeadersReader struct {
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leaders *shardLeaders
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idx int64
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}
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// Shuffle returns the shuffled shard leader list.
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func (it shardLeadersReader) Shuffle() map[string][]nodeInfo {
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result := make(map[string][]nodeInfo)
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for channel, leaders := range it.leaders.shardLeaders {
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l := len(leaders)
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// shuffle all replica at random order
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shuffled := make([]nodeInfo, l)
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for i, randIndex := range rand.Perm(l) {
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shuffled[i] = leaders[randIndex]
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}
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// make each copy has same probability to be first replica
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for index, leader := range shuffled {
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if leader == leaders[int(it.idx)%l] {
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shuffled[0], shuffled[index] = shuffled[index], shuffled[0]
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}
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}
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result[channel] = shuffled
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}
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return result
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}
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// GetReader returns shuffer reader for shard leader.
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func (sl *shardLeaders) GetReader() shardLeadersReader {
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idx := sl.idx.Inc()
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return shardLeadersReader{
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leaders: sl,
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idx: idx,
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}
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}
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// make sure MetaCache implements Cache.
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var _ Cache = (*MetaCache)(nil)
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// MetaCache implements Cache, provides collection meta cache based on internal RootCoord
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type MetaCache struct {
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rootCoord types.RootCoordClient
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queryCoord types.QueryCoordClient
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dbInfo map[string]*databaseInfo // database -> db_info
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collInfo map[string]map[string]*collectionInfo // database -> collectionName -> collection_info
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collLeader map[string]map[string]*shardLeaders // database -> collectionName -> collection_leaders
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dbCollectionInfo map[string]map[typeutil.UniqueID]string // database -> collectionID -> collectionName
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credMap map[string]*internalpb.CredentialInfo // cache for credential, lazy load
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privilegeInfos map[string]struct{} // privileges cache
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userToRoles map[string]map[string]struct{} // user to role cache
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mu sync.RWMutex
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credMut sync.RWMutex
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leaderMut sync.RWMutex
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shardMgr shardClientMgr
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sfGlobal conc.Singleflight[*collectionInfo]
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sfDB conc.Singleflight[*databaseInfo]
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IDStart int64
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IDCount int64
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IDIndex int64
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IDLock sync.RWMutex
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}
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// globalMetaCache is singleton instance of Cache
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var globalMetaCache Cache
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// InitMetaCache initializes globalMetaCache
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func InitMetaCache(ctx context.Context, rootCoord types.RootCoordClient, queryCoord types.QueryCoordClient, shardMgr shardClientMgr) error {
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var err error
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globalMetaCache, err = NewMetaCache(rootCoord, queryCoord, shardMgr)
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if err != nil {
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return err
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}
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// The privilege info is a little more. And to get this info, the query operation of involving multiple table queries is required.
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resp, err := rootCoord.ListPolicy(ctx, &internalpb.ListPolicyRequest{})
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if err != nil {
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log.Error("fail to init meta cache", zap.Error(err))
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return err
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}
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globalMetaCache.InitPolicyInfo(resp.PolicyInfos, resp.UserRoles)
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log.Info("success to init meta cache", zap.Strings("policy_infos", resp.PolicyInfos))
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return nil
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}
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// NewMetaCache creates a MetaCache with provided RootCoord and QueryNode
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func NewMetaCache(rootCoord types.RootCoordClient, queryCoord types.QueryCoordClient, shardMgr shardClientMgr) (*MetaCache, error) {
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return &MetaCache{
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rootCoord: rootCoord,
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queryCoord: queryCoord,
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dbInfo: map[string]*databaseInfo{},
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collInfo: map[string]map[string]*collectionInfo{},
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collLeader: map[string]map[string]*shardLeaders{},
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dbCollectionInfo: map[string]map[typeutil.UniqueID]string{},
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credMap: map[string]*internalpb.CredentialInfo{},
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shardMgr: shardMgr,
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privilegeInfos: map[string]struct{}{},
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userToRoles: map[string]map[string]struct{}{},
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}, nil
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}
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func (m *MetaCache) getCollection(database, collectionName string, collectionID UniqueID) (*collectionInfo, bool) {
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m.mu.RLock()
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defer m.mu.RUnlock()
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db, ok := m.collInfo[database]
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if !ok {
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return nil, false
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}
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if collectionName == "" {
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for _, collection := range db {
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if collection.collID == collectionID {
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return collection, collection.isCollectionCached()
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}
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}
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} else {
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if collection, ok := db[collectionName]; ok {
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return collection, collection.isCollectionCached()
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}
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}
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return nil, false
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}
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func (m *MetaCache) getCollectionShardLeader(database, collectionName string) (*shardLeaders, bool) {
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m.leaderMut.RLock()
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defer m.leaderMut.RUnlock()
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db, ok := m.collLeader[database]
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if !ok {
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return nil, false
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}
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if leaders, ok := db[collectionName]; ok {
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return leaders, !leaders.deprecated.Load()
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}
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return nil, false
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}
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func (m *MetaCache) update(ctx context.Context, database, collectionName string, collectionID UniqueID) (*collectionInfo, error) {
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if collInfo, ok := m.getCollection(database, collectionName, collectionID); ok {
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return collInfo, nil
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}
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collection, err := m.describeCollection(ctx, database, collectionName, collectionID)
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if err != nil {
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return nil, err
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}
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partitions, err := m.showPartitions(ctx, database, collectionName, collectionID)
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if err != nil {
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return nil, err
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}
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// check partitionID, createdTimestamp and utcstamp has sam element numbers
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if len(partitions.PartitionNames) != len(partitions.CreatedTimestamps) || len(partitions.PartitionNames) != len(partitions.CreatedUtcTimestamps) {
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return nil, merr.WrapErrParameterInvalidMsg("partition names and timestamps number is not aligned, response: %s", partitions.String())
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}
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infos := lo.Map(partitions.GetPartitionIDs(), func(partitionID int64, idx int) *partitionInfo {
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return &partitionInfo{
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name: partitions.PartitionNames[idx],
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partitionID: partitions.PartitionIDs[idx],
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createdTimestamp: partitions.CreatedTimestamps[idx],
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createdUtcTimestamp: partitions.CreatedUtcTimestamps[idx],
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}
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})
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collectionName = collection.Schema.GetName()
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m.mu.Lock()
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defer m.mu.Unlock()
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_, dbOk := m.collInfo[database]
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if !dbOk {
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m.collInfo[database] = make(map[string]*collectionInfo)
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}
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schemaInfo := newSchemaInfo(collection.Schema)
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m.collInfo[database][collectionName] = &collectionInfo{
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collID: collection.CollectionID,
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schema: schemaInfo,
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partInfo: parsePartitionsInfo(infos, schemaInfo.hasPartitionKeyField),
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createdTimestamp: collection.CreatedTimestamp,
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createdUtcTimestamp: collection.CreatedUtcTimestamp,
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consistencyLevel: collection.ConsistencyLevel,
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}
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log.Info("meta update success", zap.String("database", database), zap.String("collectionName", collectionName), zap.Int64("collectionID", collection.CollectionID))
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return m.collInfo[database][collectionName], nil
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}
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func buildSfKeyByName(database, collectionName string) string {
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return database + "-" + collectionName
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}
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func buildSfKeyById(database string, collectionID UniqueID) string {
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return database + "--" + fmt.Sprint(collectionID)
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}
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func (m *MetaCache) UpdateByName(ctx context.Context, database, collectionName string) (*collectionInfo, error) {
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collection, err, _ := m.sfGlobal.Do(buildSfKeyByName(database, collectionName), func() (*collectionInfo, error) {
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return m.update(ctx, database, collectionName, 0)
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})
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return collection, err
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}
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func (m *MetaCache) UpdateByID(ctx context.Context, database string, collectionID UniqueID) (*collectionInfo, error) {
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collection, err, _ := m.sfGlobal.Do(buildSfKeyById(database, collectionID), func() (*collectionInfo, error) {
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return m.update(ctx, database, "", collectionID)
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})
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return collection, err
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}
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// GetCollectionID returns the corresponding collection id for provided collection name
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func (m *MetaCache) GetCollectionID(ctx context.Context, database, collectionName string) (UniqueID, error) {
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method := "GetCollectionID"
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collInfo, ok := m.getCollection(database, collectionName, 0)
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if !ok {
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metrics.ProxyCacheStatsCounter.WithLabelValues(fmt.Sprint(paramtable.GetNodeID()), method, metrics.CacheMissLabel).Inc()
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tr := timerecord.NewTimeRecorder("UpdateCache")
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collInfo, err := m.UpdateByName(ctx, database, collectionName)
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if err != nil {
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return UniqueID(0), err
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}
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metrics.ProxyUpdateCacheLatency.WithLabelValues(fmt.Sprint(paramtable.GetNodeID()), method).Observe(float64(tr.ElapseSpan().Milliseconds()))
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return collInfo.collID, nil
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}
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metrics.ProxyCacheStatsCounter.WithLabelValues(fmt.Sprint(paramtable.GetNodeID()), method, metrics.CacheHitLabel).Inc()
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return collInfo.collID, nil
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}
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|
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// GetCollectionName returns the corresponding collection name for provided collection id
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func (m *MetaCache) GetCollectionName(ctx context.Context, database string, collectionID int64) (string, error) {
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method := "GetCollectionName"
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collInfo, ok := m.getCollection(database, "", collectionID)
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if !ok {
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metrics.ProxyCacheStatsCounter.WithLabelValues(fmt.Sprint(paramtable.GetNodeID()), method, metrics.CacheMissLabel).Inc()
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tr := timerecord.NewTimeRecorder("UpdateCache")
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collInfo, err := m.UpdateByID(ctx, database, collectionID)
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if err != nil {
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return "", err
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}
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metrics.ProxyUpdateCacheLatency.WithLabelValues(fmt.Sprint(paramtable.GetNodeID()), method).Observe(float64(tr.ElapseSpan().Milliseconds()))
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return collInfo.schema.Name, nil
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}
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metrics.ProxyCacheStatsCounter.WithLabelValues(fmt.Sprint(paramtable.GetNodeID()), method, metrics.CacheHitLabel).Inc()
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return collInfo.schema.Name, nil
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}
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|
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func (m *MetaCache) GetCollectionInfo(ctx context.Context, database string, collectionName string, collectionID int64) (*collectionBasicInfo, error) {
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collInfo, ok := m.getCollection(database, collectionName, 0)
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|
|
method := "GetCollectionInfo"
|
|
// if collInfo.collID != collectionID, means that the cache is not trustable
|
|
// try to get collection according to collectionID
|
|
if !ok || collInfo.collID != collectionID {
|
|
tr := timerecord.NewTimeRecorder("UpdateCache")
|
|
metrics.ProxyCacheStatsCounter.WithLabelValues(fmt.Sprint(paramtable.GetNodeID()), method, metrics.CacheMissLabel).Inc()
|
|
|
|
collInfo, err := m.UpdateByID(ctx, database, collectionID)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
metrics.ProxyUpdateCacheLatency.WithLabelValues(fmt.Sprint(paramtable.GetNodeID()), method).Observe(float64(tr.ElapseSpan().Milliseconds()))
|
|
return collInfo.getBasicInfo(), nil
|
|
}
|
|
|
|
metrics.ProxyCacheStatsCounter.WithLabelValues(fmt.Sprint(paramtable.GetNodeID()), method, metrics.CacheHitLabel).Inc()
|
|
return collInfo.getBasicInfo(), nil
|
|
}
|
|
|
|
func (m *MetaCache) GetCollectionNamesByID(ctx context.Context, collectionIDs []UniqueID) ([]string, []string, error) {
|
|
hasUpdate := false
|
|
|
|
dbNames := make([]string, 0)
|
|
collectionNames := make([]string, 0)
|
|
for _, collectionID := range collectionIDs {
|
|
dbName, collectionName := m.innerGetCollectionByID(collectionID)
|
|
if dbName != "" {
|
|
dbNames = append(dbNames, dbName)
|
|
collectionNames = append(collectionNames, collectionName)
|
|
continue
|
|
}
|
|
if hasUpdate {
|
|
return nil, nil, errors.New("collection not found after meta cache has been updated")
|
|
}
|
|
hasUpdate = true
|
|
err := m.updateDBInfo(ctx)
|
|
if err != nil {
|
|
return nil, nil, err
|
|
}
|
|
dbName, collectionName = m.innerGetCollectionByID(collectionID)
|
|
if dbName == "" {
|
|
return nil, nil, errors.New("collection not found")
|
|
}
|
|
dbNames = append(dbNames, dbName)
|
|
collectionNames = append(collectionNames, collectionName)
|
|
}
|
|
|
|
return dbNames, collectionNames, nil
|
|
}
|
|
|
|
func (m *MetaCache) innerGetCollectionByID(collectionID int64) (string, string) {
|
|
m.mu.RLock()
|
|
defer m.mu.RUnlock()
|
|
|
|
for database, db := range m.dbCollectionInfo {
|
|
name, ok := db[collectionID]
|
|
if ok {
|
|
return database, name
|
|
}
|
|
}
|
|
return "", ""
|
|
}
|
|
|
|
func (m *MetaCache) updateDBInfo(ctx context.Context) error {
|
|
databaseResp, err := m.rootCoord.ListDatabases(ctx, &milvuspb.ListDatabasesRequest{
|
|
Base: commonpbutil.NewMsgBase(commonpbutil.WithMsgType(commonpb.MsgType_ListDatabases)),
|
|
})
|
|
|
|
if err := merr.CheckRPCCall(databaseResp, err); err != nil {
|
|
log.Warn("failed to ListDatabases", zap.Error(err))
|
|
return err
|
|
}
|
|
|
|
dbInfo := make(map[string]map[int64]string)
|
|
for _, dbName := range databaseResp.DbNames {
|
|
resp, err := m.rootCoord.ShowCollections(ctx, &milvuspb.ShowCollectionsRequest{
|
|
Base: commonpbutil.NewMsgBase(
|
|
commonpbutil.WithMsgType(commonpb.MsgType_ShowCollections),
|
|
),
|
|
DbName: dbName,
|
|
})
|
|
|
|
if err := merr.CheckRPCCall(resp, err); err != nil {
|
|
log.Warn("failed to ShowCollections",
|
|
zap.String("dbName", dbName),
|
|
zap.Error(err))
|
|
return err
|
|
}
|
|
|
|
collections := make(map[int64]string)
|
|
for i, collection := range resp.CollectionNames {
|
|
collections[resp.CollectionIds[i]] = collection
|
|
}
|
|
dbInfo[dbName] = collections
|
|
}
|
|
|
|
m.mu.Lock()
|
|
defer m.mu.Unlock()
|
|
m.dbCollectionInfo = dbInfo
|
|
|
|
return nil
|
|
}
|
|
|
|
// GetCollectionInfo returns the collection information related to provided collection name
|
|
// If the information is not found, proxy will try to fetch information for other source (RootCoord for now)
|
|
// TODO: may cause data race of this implementation, should be refactored in future.
|
|
func (m *MetaCache) getFullCollectionInfo(ctx context.Context, database, collectionName string, collectionID int64) (*collectionInfo, error) {
|
|
collInfo, ok := m.getCollection(database, collectionName, collectionID)
|
|
|
|
method := "GetCollectionInfo"
|
|
// if collInfo.collID != collectionID, means that the cache is not trustable
|
|
// try to get collection according to collectionID
|
|
if !ok || collInfo.collID != collectionID {
|
|
tr := timerecord.NewTimeRecorder("UpdateCache")
|
|
metrics.ProxyCacheStatsCounter.WithLabelValues(fmt.Sprint(paramtable.GetNodeID()), method, metrics.CacheMissLabel).Inc()
|
|
|
|
collInfo, err := m.UpdateByID(ctx, database, collectionID)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
metrics.ProxyUpdateCacheLatency.WithLabelValues(fmt.Sprint(paramtable.GetNodeID()), method).Observe(float64(tr.ElapseSpan().Milliseconds()))
|
|
return collInfo, nil
|
|
}
|
|
|
|
metrics.ProxyCacheStatsCounter.WithLabelValues(fmt.Sprint(paramtable.GetNodeID()), method, metrics.CacheHitLabel).Inc()
|
|
return collInfo, nil
|
|
}
|
|
|
|
func (m *MetaCache) GetCollectionSchema(ctx context.Context, database, collectionName string) (*schemaInfo, error) {
|
|
collInfo, ok := m.getCollection(database, collectionName, 0)
|
|
|
|
method := "GetCollectionSchema"
|
|
if !ok {
|
|
tr := timerecord.NewTimeRecorder("UpdateCache")
|
|
metrics.ProxyCacheStatsCounter.WithLabelValues(fmt.Sprint(paramtable.GetNodeID()), method, metrics.CacheMissLabel).Inc()
|
|
|
|
collInfo, err := m.UpdateByName(ctx, database, collectionName)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
metrics.ProxyUpdateCacheLatency.WithLabelValues(fmt.Sprint(paramtable.GetNodeID()), method).Observe(float64(tr.ElapseSpan().Milliseconds()))
|
|
log.Debug("Reload collection from root coordinator ",
|
|
zap.String("collectionName", collectionName),
|
|
zap.Int64("time (milliseconds) take ", tr.ElapseSpan().Milliseconds()))
|
|
return collInfo.schema, nil
|
|
}
|
|
metrics.ProxyCacheStatsCounter.WithLabelValues(fmt.Sprint(paramtable.GetNodeID()), method, metrics.CacheHitLabel).Inc()
|
|
|
|
return collInfo.schema, nil
|
|
}
|
|
|
|
func (m *MetaCache) GetPartitionID(ctx context.Context, database, collectionName string, partitionName string) (typeutil.UniqueID, error) {
|
|
partInfo, err := m.GetPartitionInfo(ctx, database, collectionName, partitionName)
|
|
if err != nil {
|
|
return 0, err
|
|
}
|
|
return partInfo.partitionID, nil
|
|
}
|
|
|
|
func (m *MetaCache) GetPartitions(ctx context.Context, database, collectionName string) (map[string]typeutil.UniqueID, error) {
|
|
partitions, err := m.GetPartitionInfos(ctx, database, collectionName)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
return partitions.name2ID, nil
|
|
}
|
|
|
|
func (m *MetaCache) GetPartitionInfo(ctx context.Context, database, collectionName string, partitionName string) (*partitionInfo, error) {
|
|
partitions, err := m.GetPartitionInfos(ctx, database, collectionName)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
info, ok := partitions.name2Info[partitionName]
|
|
if !ok {
|
|
return nil, merr.WrapErrPartitionNotFound(partitionName)
|
|
}
|
|
return info, nil
|
|
}
|
|
|
|
func (m *MetaCache) GetPartitionsIndex(ctx context.Context, database, collectionName string) ([]string, error) {
|
|
partitions, err := m.GetPartitionInfos(ctx, database, collectionName)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
if partitions.indexedPartitionNames == nil {
|
|
return nil, merr.WrapErrServiceInternal("partitions not in partition key naming pattern")
|
|
}
|
|
|
|
return partitions.indexedPartitionNames, nil
|
|
}
|
|
|
|
func (m *MetaCache) GetPartitionInfos(ctx context.Context, database, collectionName string) (*partitionInfos, error) {
|
|
method := "GetPartitionInfo"
|
|
collInfo, ok := m.getCollection(database, collectionName, 0)
|
|
|
|
if !ok {
|
|
tr := timerecord.NewTimeRecorder("UpdateCache")
|
|
metrics.ProxyCacheStatsCounter.WithLabelValues(fmt.Sprint(paramtable.GetNodeID()), method, metrics.CacheMissLabel).Inc()
|
|
|
|
collInfo, err := m.UpdateByName(ctx, database, collectionName)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
metrics.ProxyUpdateCacheLatency.WithLabelValues(fmt.Sprint(paramtable.GetNodeID()), method).Observe(float64(tr.ElapseSpan().Milliseconds()))
|
|
return collInfo.partInfo, nil
|
|
}
|
|
return collInfo.partInfo, nil
|
|
}
|
|
|
|
// Get the collection information from rootcoord.
|
|
func (m *MetaCache) describeCollection(ctx context.Context, database, collectionName string, collectionID int64) (*milvuspb.DescribeCollectionResponse, error) {
|
|
req := &milvuspb.DescribeCollectionRequest{
|
|
Base: commonpbutil.NewMsgBase(
|
|
commonpbutil.WithMsgType(commonpb.MsgType_DescribeCollection),
|
|
),
|
|
DbName: database,
|
|
CollectionName: collectionName,
|
|
CollectionID: collectionID,
|
|
}
|
|
coll, err := m.rootCoord.DescribeCollection(ctx, req)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
err = merr.Error(coll.GetStatus())
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
resp := &milvuspb.DescribeCollectionResponse{
|
|
Status: coll.Status,
|
|
Schema: &schemapb.CollectionSchema{
|
|
Name: coll.Schema.Name,
|
|
Description: coll.Schema.Description,
|
|
AutoID: coll.Schema.AutoID,
|
|
Fields: make([]*schemapb.FieldSchema, 0),
|
|
EnableDynamicField: coll.Schema.EnableDynamicField,
|
|
},
|
|
CollectionID: coll.CollectionID,
|
|
VirtualChannelNames: coll.VirtualChannelNames,
|
|
PhysicalChannelNames: coll.PhysicalChannelNames,
|
|
CreatedTimestamp: coll.CreatedTimestamp,
|
|
CreatedUtcTimestamp: coll.CreatedUtcTimestamp,
|
|
ConsistencyLevel: coll.ConsistencyLevel,
|
|
DbName: coll.GetDbName(),
|
|
}
|
|
for _, field := range coll.Schema.Fields {
|
|
if field.FieldID >= common.StartOfUserFieldID {
|
|
resp.Schema.Fields = append(resp.Schema.Fields, field)
|
|
}
|
|
}
|
|
return resp, nil
|
|
}
|
|
|
|
func (m *MetaCache) showPartitions(ctx context.Context, dbName string, collectionName string, collectionID UniqueID) (*milvuspb.ShowPartitionsResponse, error) {
|
|
req := &milvuspb.ShowPartitionsRequest{
|
|
Base: commonpbutil.NewMsgBase(
|
|
commonpbutil.WithMsgType(commonpb.MsgType_ShowPartitions),
|
|
),
|
|
DbName: dbName,
|
|
CollectionName: collectionName,
|
|
CollectionID: collectionID,
|
|
}
|
|
|
|
partitions, err := m.rootCoord.ShowPartitions(ctx, req)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
if err := merr.Error(partitions.GetStatus()); err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
if len(partitions.PartitionIDs) != len(partitions.PartitionNames) {
|
|
return nil, fmt.Errorf("partition ids len: %d doesn't equal Partition name len %d",
|
|
len(partitions.PartitionIDs), len(partitions.PartitionNames))
|
|
}
|
|
|
|
return partitions, nil
|
|
}
|
|
|
|
func (m *MetaCache) describeDatabase(ctx context.Context, dbName string) (*rootcoordpb.DescribeDatabaseResponse, error) {
|
|
req := &rootcoordpb.DescribeDatabaseRequest{
|
|
DbName: dbName,
|
|
}
|
|
|
|
resp, err := m.rootCoord.DescribeDatabase(ctx, req)
|
|
if err = merr.CheckRPCCall(resp, err); err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
return resp, nil
|
|
}
|
|
|
|
// parsePartitionsInfo parse partitionInfo list to partitionInfos struct.
|
|
// prepare all name to id & info map
|
|
// try parse partition names to partitionKey index.
|
|
func parsePartitionsInfo(infos []*partitionInfo, hasPartitionKey bool) *partitionInfos {
|
|
name2ID := lo.SliceToMap(infos, func(info *partitionInfo) (string, int64) {
|
|
return info.name, info.partitionID
|
|
})
|
|
name2Info := lo.SliceToMap(infos, func(info *partitionInfo) (string, *partitionInfo) {
|
|
return info.name, info
|
|
})
|
|
|
|
result := &partitionInfos{
|
|
partitionInfos: infos,
|
|
name2ID: name2ID,
|
|
name2Info: name2Info,
|
|
}
|
|
|
|
if !hasPartitionKey {
|
|
return result
|
|
}
|
|
|
|
// Make sure the order of the partition names got every time is the same
|
|
partitionNames := make([]string, len(infos))
|
|
for _, info := range infos {
|
|
partitionName := info.name
|
|
splits := strings.Split(partitionName, "_")
|
|
if len(splits) < 2 {
|
|
log.Info("partition group not in partitionKey pattern", zap.String("partitionName", partitionName))
|
|
return result
|
|
}
|
|
index, err := strconv.ParseInt(splits[len(splits)-1], 10, 64)
|
|
if err != nil {
|
|
log.Info("partition group not in partitionKey pattern", zap.String("parititonName", partitionName), zap.Error(err))
|
|
return result
|
|
}
|
|
partitionNames[index] = partitionName
|
|
}
|
|
|
|
result.indexedPartitionNames = partitionNames
|
|
return result
|
|
}
|
|
|
|
func (m *MetaCache) RemoveCollection(ctx context.Context, database, collectionName string) {
|
|
m.mu.Lock()
|
|
defer m.mu.Unlock()
|
|
_, dbOk := m.collInfo[database]
|
|
if dbOk {
|
|
delete(m.collInfo[database], collectionName)
|
|
}
|
|
}
|
|
|
|
func (m *MetaCache) RemoveCollectionsByID(ctx context.Context, collectionID UniqueID) []string {
|
|
m.mu.Lock()
|
|
defer m.mu.Unlock()
|
|
var collNames []string
|
|
for database, db := range m.collInfo {
|
|
for k, v := range db {
|
|
if v.collID == collectionID {
|
|
delete(m.collInfo[database], k)
|
|
collNames = append(collNames, k)
|
|
}
|
|
}
|
|
}
|
|
return collNames
|
|
}
|
|
|
|
func (m *MetaCache) RemovePartition(ctx context.Context, database, collectionName, partitionName string) {
|
|
m.mu.Lock()
|
|
defer m.mu.Unlock()
|
|
|
|
var ok bool
|
|
var collInfo *collectionInfo
|
|
|
|
db, dbOk := m.collInfo[database]
|
|
if dbOk {
|
|
collInfo, ok = db[collectionName]
|
|
}
|
|
|
|
if !ok {
|
|
return
|
|
}
|
|
|
|
partInfo := m.collInfo[database][collectionName].partInfo
|
|
if partInfo == nil {
|
|
return
|
|
}
|
|
filteredInfos := lo.Filter(partInfo.partitionInfos, func(info *partitionInfo, idx int) bool {
|
|
return info.name != partitionName
|
|
})
|
|
|
|
m.collInfo[database][collectionName].partInfo = parsePartitionsInfo(filteredInfos, collInfo.schema.hasPartitionKeyField)
|
|
}
|
|
|
|
// GetCredentialInfo returns the credential related to provided username
|
|
// If the cache missed, proxy will try to fetch from storage
|
|
func (m *MetaCache) GetCredentialInfo(ctx context.Context, username string) (*internalpb.CredentialInfo, error) {
|
|
m.credMut.RLock()
|
|
var credInfo *internalpb.CredentialInfo
|
|
credInfo, ok := m.credMap[username]
|
|
m.credMut.RUnlock()
|
|
|
|
if !ok {
|
|
req := &rootcoordpb.GetCredentialRequest{
|
|
Base: commonpbutil.NewMsgBase(
|
|
commonpbutil.WithMsgType(commonpb.MsgType_GetCredential),
|
|
),
|
|
Username: username,
|
|
}
|
|
resp, err := m.rootCoord.GetCredential(ctx, req)
|
|
if err != nil {
|
|
return &internalpb.CredentialInfo{}, err
|
|
}
|
|
credInfo = &internalpb.CredentialInfo{
|
|
Username: resp.Username,
|
|
EncryptedPassword: resp.Password,
|
|
}
|
|
}
|
|
|
|
return credInfo, nil
|
|
}
|
|
|
|
func (m *MetaCache) RemoveCredential(username string) {
|
|
m.credMut.Lock()
|
|
defer m.credMut.Unlock()
|
|
// delete pair in credMap
|
|
delete(m.credMap, username)
|
|
}
|
|
|
|
func (m *MetaCache) UpdateCredential(credInfo *internalpb.CredentialInfo) {
|
|
m.credMut.Lock()
|
|
defer m.credMut.Unlock()
|
|
username := credInfo.Username
|
|
_, ok := m.credMap[username]
|
|
if !ok {
|
|
m.credMap[username] = &internalpb.CredentialInfo{}
|
|
}
|
|
|
|
// Do not cache encrypted password content
|
|
m.credMap[username].Username = username
|
|
m.credMap[username].Sha256Password = credInfo.Sha256Password
|
|
}
|
|
|
|
// GetShards update cache if withCache == false
|
|
func (m *MetaCache) GetShards(ctx context.Context, withCache bool, database, collectionName string, collectionID int64) (map[string][]nodeInfo, error) {
|
|
method := "GetShards"
|
|
log := log.Ctx(ctx).With(
|
|
zap.String("collectionName", collectionName),
|
|
zap.Int64("collectionID", collectionID))
|
|
|
|
info, err := m.getFullCollectionInfo(ctx, database, collectionName, collectionID)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
cacheShardLeaders, ok := m.getCollectionShardLeader(database, collectionName)
|
|
if withCache {
|
|
if ok {
|
|
metrics.ProxyCacheStatsCounter.WithLabelValues(fmt.Sprint(paramtable.GetNodeID()), method, metrics.CacheHitLabel).Inc()
|
|
iterator := cacheShardLeaders.GetReader()
|
|
return iterator.Shuffle(), nil
|
|
}
|
|
|
|
metrics.ProxyCacheStatsCounter.WithLabelValues(fmt.Sprint(paramtable.GetNodeID()), method, metrics.CacheMissLabel).Inc()
|
|
log.Info("no shard cache for collection, try to get shard leaders from QueryCoord")
|
|
}
|
|
req := &querypb.GetShardLeadersRequest{
|
|
Base: commonpbutil.NewMsgBase(
|
|
commonpbutil.WithMsgType(commonpb.MsgType_GetShardLeaders),
|
|
commonpbutil.WithSourceID(paramtable.GetNodeID()),
|
|
),
|
|
CollectionID: info.collID,
|
|
}
|
|
|
|
tr := timerecord.NewTimeRecorder("UpdateShardCache")
|
|
resp, err := m.queryCoord.GetShardLeaders(ctx, req)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
if err = merr.Error(resp.GetStatus()); err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
shards := parseShardLeaderList2QueryNode(resp.GetShards())
|
|
newShardLeaders := &shardLeaders{
|
|
collectionID: info.collID,
|
|
shardLeaders: shards,
|
|
deprecated: atomic.NewBool(false),
|
|
idx: atomic.NewInt64(0),
|
|
}
|
|
|
|
// lock leader
|
|
m.leaderMut.Lock()
|
|
if _, ok := m.collLeader[database]; !ok {
|
|
m.collLeader[database] = make(map[string]*shardLeaders)
|
|
}
|
|
|
|
m.collLeader[database][collectionName] = newShardLeaders
|
|
m.leaderMut.Unlock()
|
|
|
|
iterator := newShardLeaders.GetReader()
|
|
ret := iterator.Shuffle()
|
|
|
|
oldLeaders := make(map[string][]nodeInfo)
|
|
if cacheShardLeaders != nil {
|
|
oldLeaders = cacheShardLeaders.shardLeaders
|
|
}
|
|
// update refcnt in shardClientMgr
|
|
// and create new client for new leaders
|
|
_ = m.shardMgr.UpdateShardLeaders(oldLeaders, ret)
|
|
|
|
metrics.ProxyUpdateCacheLatency.WithLabelValues(fmt.Sprint(paramtable.GetNodeID()), method).Observe(float64(tr.ElapseSpan().Milliseconds()))
|
|
return ret, nil
|
|
}
|
|
|
|
func parseShardLeaderList2QueryNode(shardsLeaders []*querypb.ShardLeadersList) map[string][]nodeInfo {
|
|
shard2QueryNodes := make(map[string][]nodeInfo)
|
|
|
|
for _, leaders := range shardsLeaders {
|
|
qns := make([]nodeInfo, len(leaders.GetNodeIds()))
|
|
|
|
for j := range qns {
|
|
qns[j] = nodeInfo{leaders.GetNodeIds()[j], leaders.GetNodeAddrs()[j]}
|
|
}
|
|
|
|
shard2QueryNodes[leaders.GetChannelName()] = qns
|
|
}
|
|
|
|
return shard2QueryNodes
|
|
}
|
|
|
|
// DeprecateShardCache clear the shard leader cache of a collection
|
|
func (m *MetaCache) DeprecateShardCache(database, collectionName string) {
|
|
log.Info("clearing shard cache for collection", zap.String("collectionName", collectionName))
|
|
if shards, ok := m.getCollectionShardLeader(database, collectionName); ok {
|
|
shards.deprecated.Store(true)
|
|
}
|
|
}
|
|
|
|
func (m *MetaCache) InvalidateShardLeaderCache(collections []int64) {
|
|
log.Info("Invalidate shard cache for collections", zap.Int64s("collectionIDs", collections))
|
|
m.mu.RLock()
|
|
defer m.mu.RUnlock()
|
|
|
|
collectionSet := typeutil.NewUniqueSet(collections...)
|
|
for _, db := range m.collLeader {
|
|
for _, shardLeaders := range db {
|
|
if collectionSet.Contain(shardLeaders.collectionID) {
|
|
shardLeaders.deprecated.Store(true)
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
func (m *MetaCache) InitPolicyInfo(info []string, userRoles []string) {
|
|
defer func() {
|
|
err := getEnforcer().LoadPolicy()
|
|
if err != nil {
|
|
log.Error("failed to load policy after RefreshPolicyInfo", zap.Error(err))
|
|
}
|
|
}()
|
|
m.mu.Lock()
|
|
defer m.mu.Unlock()
|
|
m.unsafeInitPolicyInfo(info, userRoles)
|
|
}
|
|
|
|
func (m *MetaCache) unsafeInitPolicyInfo(info []string, userRoles []string) {
|
|
m.privilegeInfos = util.StringSet(info)
|
|
for _, userRole := range userRoles {
|
|
user, role, err := funcutil.DecodeUserRoleCache(userRole)
|
|
if err != nil {
|
|
log.Warn("invalid user-role key", zap.String("user-role", userRole), zap.Error(err))
|
|
continue
|
|
}
|
|
if m.userToRoles[user] == nil {
|
|
m.userToRoles[user] = make(map[string]struct{})
|
|
}
|
|
m.userToRoles[user][role] = struct{}{}
|
|
}
|
|
}
|
|
|
|
func (m *MetaCache) GetPrivilegeInfo(ctx context.Context) []string {
|
|
m.mu.RLock()
|
|
defer m.mu.RUnlock()
|
|
|
|
return util.StringList(m.privilegeInfos)
|
|
}
|
|
|
|
func (m *MetaCache) GetUserRole(user string) []string {
|
|
m.mu.RLock()
|
|
defer m.mu.RUnlock()
|
|
|
|
return util.StringList(m.userToRoles[user])
|
|
}
|
|
|
|
func (m *MetaCache) RefreshPolicyInfo(op typeutil.CacheOp) (err error) {
|
|
defer func() {
|
|
if err == nil {
|
|
le := getEnforcer().LoadPolicy()
|
|
if le != nil {
|
|
log.Error("failed to load policy after RefreshPolicyInfo", zap.Error(le))
|
|
}
|
|
}
|
|
}()
|
|
if op.OpType != typeutil.CacheRefresh {
|
|
m.mu.Lock()
|
|
defer m.mu.Unlock()
|
|
if op.OpKey == "" {
|
|
return errors.New("empty op key")
|
|
}
|
|
}
|
|
|
|
switch op.OpType {
|
|
case typeutil.CacheGrantPrivilege:
|
|
m.privilegeInfos[op.OpKey] = struct{}{}
|
|
case typeutil.CacheRevokePrivilege:
|
|
delete(m.privilegeInfos, op.OpKey)
|
|
case typeutil.CacheAddUserToRole:
|
|
user, role, err := funcutil.DecodeUserRoleCache(op.OpKey)
|
|
if err != nil {
|
|
return fmt.Errorf("invalid opKey, fail to decode, op_type: %d, op_key: %s", int(op.OpType), op.OpKey)
|
|
}
|
|
if m.userToRoles[user] == nil {
|
|
m.userToRoles[user] = make(map[string]struct{})
|
|
}
|
|
m.userToRoles[user][role] = struct{}{}
|
|
case typeutil.CacheRemoveUserFromRole:
|
|
user, role, err := funcutil.DecodeUserRoleCache(op.OpKey)
|
|
if err != nil {
|
|
return fmt.Errorf("invalid opKey, fail to decode, op_type: %d, op_key: %s", int(op.OpType), op.OpKey)
|
|
}
|
|
if m.userToRoles[user] != nil {
|
|
delete(m.userToRoles[user], role)
|
|
}
|
|
case typeutil.CacheDeleteUser:
|
|
delete(m.userToRoles, op.OpKey)
|
|
case typeutil.CacheDropRole:
|
|
for user := range m.userToRoles {
|
|
delete(m.userToRoles[user], op.OpKey)
|
|
}
|
|
case typeutil.CacheRefresh:
|
|
resp, err := m.rootCoord.ListPolicy(context.Background(), &internalpb.ListPolicyRequest{})
|
|
if err != nil {
|
|
log.Error("fail to init meta cache", zap.Error(err))
|
|
return err
|
|
}
|
|
|
|
m.mu.Lock()
|
|
defer m.mu.Unlock()
|
|
m.userToRoles = make(map[string]map[string]struct{})
|
|
m.privilegeInfos = make(map[string]struct{})
|
|
m.unsafeInitPolicyInfo(resp.PolicyInfos, resp.UserRoles)
|
|
default:
|
|
return fmt.Errorf("invalid opType, op_type: %d, op_key: %s", int(op.OpType), op.OpKey)
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func (m *MetaCache) RemoveDatabase(ctx context.Context, database string) {
|
|
m.mu.Lock()
|
|
defer m.mu.Unlock()
|
|
delete(m.collInfo, database)
|
|
delete(m.dbInfo, database)
|
|
}
|
|
|
|
func (m *MetaCache) HasDatabase(ctx context.Context, database string) bool {
|
|
m.mu.RLock()
|
|
defer m.mu.RUnlock()
|
|
_, ok := m.collInfo[database]
|
|
return ok
|
|
}
|
|
|
|
func (m *MetaCache) GetDatabaseInfo(ctx context.Context, database string) (*databaseInfo, error) {
|
|
dbInfo := m.safeGetDBInfo(database)
|
|
if dbInfo != nil {
|
|
return dbInfo, nil
|
|
}
|
|
|
|
dbInfo, err, _ := m.sfDB.Do(database, func() (*databaseInfo, error) {
|
|
resp, err := m.describeDatabase(ctx, database)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
m.mu.Lock()
|
|
defer m.mu.Unlock()
|
|
dbInfo := &databaseInfo{
|
|
dbID: resp.GetDbID(),
|
|
createdTimestamp: resp.GetCreatedTimestamp(),
|
|
}
|
|
m.dbInfo[database] = dbInfo
|
|
return dbInfo, nil
|
|
})
|
|
|
|
return dbInfo, err
|
|
}
|
|
|
|
func (m *MetaCache) safeGetDBInfo(database string) *databaseInfo {
|
|
m.mu.RLock()
|
|
defer m.mu.RUnlock()
|
|
db, ok := m.dbInfo[database]
|
|
if !ok {
|
|
return nil
|
|
}
|
|
return db
|
|
}
|
|
|
|
func (m *MetaCache) AllocID(ctx context.Context) (int64, error) {
|
|
m.IDLock.Lock()
|
|
defer m.IDLock.Unlock()
|
|
|
|
if m.IDIndex == m.IDCount {
|
|
resp, err := m.rootCoord.AllocID(ctx, &rootcoordpb.AllocIDRequest{
|
|
Count: 1000000,
|
|
})
|
|
if err != nil {
|
|
log.Warn("Refreshing ID cache from rootcoord failed", zap.Error(err))
|
|
return 0, err
|
|
}
|
|
if resp.GetStatus().GetCode() != 0 {
|
|
log.Warn("Refreshing ID cache from rootcoord failed", zap.String("failed detail", resp.GetStatus().GetDetail()))
|
|
return 0, merr.WrapErrServiceInternal(resp.GetStatus().GetDetail())
|
|
}
|
|
m.IDStart, m.IDCount = resp.GetID(), int64(resp.GetCount())
|
|
m.IDIndex = 0
|
|
}
|
|
id := m.IDStart + m.IDIndex
|
|
m.IDIndex++
|
|
return id, nil
|
|
}
|