// 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" "time" "github.com/milvus-io/milvus/internal/log" "github.com/milvus-io/milvus/internal/proto/internalpb" "github.com/milvus-io/milvus/internal/rootcoord" "github.com/milvus-io/milvus/internal/util/flowgraph" "go.uber.org/zap" ) // DmInputNode receives messages from message streams, packs messages between two timeticks, and passes all // messages between two timeticks to the following flowgraph node. In DataNode, the following flow graph node is // flowgraph ddNode. func newDmInputNode(ctx context.Context, seekPos *internalpb.MsgPosition, dmNodeConfig *nodeConfig) (*flowgraph.InputNode, error) { // subName should be unique, since pchannelName is shared among several collections // consumeSubName := Params.MsgChannelSubName + "-" + strconv.FormatInt(collID, 10) consumeSubName := fmt.Sprintf("%s-%d", Params.DataNodeCfg.MsgChannelSubName, dmNodeConfig.collectionID) insertStream, err := dmNodeConfig.msFactory.NewTtMsgStream(ctx) if err != nil { return nil, err } // MsgStream needs a physical channel name, but the channel name in seek position from DataCoord // is virtual channel name, so we need to convert vchannel name into pchannel neme here. pchannelName := rootcoord.ToPhysicalChannel(dmNodeConfig.vChannelName) insertStream.AsConsumer([]string{pchannelName}, consumeSubName) log.Debug("datanode AsConsumer", zap.String("physical channel", pchannelName), zap.String("subName", consumeSubName)) if seekPos != nil { seekPos.ChannelName = pchannelName start := time.Now() log.Debug("datanode begin to seek", zap.String("Channel Name", seekPos.GetChannelName())) err = insertStream.Seek([]*internalpb.MsgPosition{seekPos}) if err != nil { return nil, err } log.Debug("datanode Seek successfully", zap.String("Channel Name", seekPos.GetChannelName()), zap.Duration("elapse", time.Since(start))) } name := fmt.Sprintf("dmInputNode-%d-%s", dmNodeConfig.collectionID, dmNodeConfig.vChannelName) node := flowgraph.NewInputNode(insertStream, name, dmNodeConfig.maxQueueLength, dmNodeConfig.maxParallelism) return node, nil }