// Licensed to the LF AI & Data foundation under one // or more contributor license agreements. See the NOTICE file // distributed with this work for additional information // regarding copyright ownership. The ASF licenses this file // to you 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 datanode import ( "context" "fmt" "reflect" "github.com/milvus-io/milvus/internal/types" "github.com/milvus-io/milvus/internal/proto/commonpb" "github.com/milvus-io/milvus/internal/proto/etcdpb" "github.com/milvus-io/milvus/internal/proto/milvuspb" "github.com/milvus-io/milvus/internal/proto/schemapb" ) // metaService initialize replica collections in data node from root coord. // Initializing replica collections happens on data node starting. It depends on // a healthy root coord and a valid root coord grpc client. type metaService struct { replica Replica collectionID UniqueID rootCoord types.RootCoord } // newMetaService creates a new metaService with provided RootCoord and collectionID. func newMetaService(rc types.RootCoord, collectionID UniqueID) *metaService { return &metaService{ rootCoord: rc, collectionID: collectionID, } } // getCollectionSchema get collection schema with provided collection id at specified timestamp. func (mService *metaService) getCollectionSchema(ctx context.Context, collID UniqueID, timestamp Timestamp) (*schemapb.CollectionSchema, error) { req := &milvuspb.DescribeCollectionRequest{ Base: &commonpb.MsgBase{ MsgType: commonpb.MsgType_DescribeCollection, MsgID: 0, //GOOSE TODO Timestamp: 0, // GOOSE TODO SourceID: Params.DataNodeCfg.NodeID, }, DbName: "default", // GOOSE TODO CollectionID: collID, TimeStamp: timestamp, } response, err := mService.rootCoord.DescribeCollection(ctx, req) if err != nil { return nil, fmt.Errorf("grpc error when describe collection %v from rootcoord: %s", collID, err.Error()) } if response.GetStatus().GetErrorCode() != commonpb.ErrorCode_Success { return nil, fmt.Errorf("describe collection %v from rootcoord wrong: %s", collID, response.GetStatus().GetReason()) } return response.GetSchema(), nil } // printCollectionStruct util function to print schema data, used in tests only. func printCollectionStruct(obj *etcdpb.CollectionMeta) { v := reflect.ValueOf(obj) v = reflect.Indirect(v) typeOfS := v.Type() for i := 0; i < v.NumField()-3; i++ { if typeOfS.Field(i).Name == "GrpcMarshalString" { continue } fmt.Printf("Field: %s\tValue: %v\n", typeOfS.Field(i).Name, v.Field(i).Interface()) } }