mirror of
https://gitee.com/milvus-io/milvus.git
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258 lines
8.2 KiB
Go
258 lines
8.2 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 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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"go.uber.org/zap"
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"github.com/milvus-io/milvus/internal/log"
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"github.com/milvus-io/milvus/internal/metrics"
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"github.com/milvus-io/milvus/internal/mq/msgstream"
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"github.com/milvus-io/milvus/internal/mq/msgstream/mqwrapper"
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"github.com/milvus-io/milvus/internal/proto/internalpb"
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"github.com/milvus-io/milvus/internal/util/flowgraph"
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)
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// queryNodeFlowGraph is a TimeTickedFlowGraph in query node
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type queryNodeFlowGraph struct {
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ctx context.Context
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cancel context.CancelFunc
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collectionID UniqueID
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channel Channel
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flowGraph *flowgraph.TimeTickedFlowGraph
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dmlStream msgstream.MsgStream
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consumerCnt int
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}
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// newQueryNodeFlowGraph returns a new queryNodeFlowGraph
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func newQueryNodeFlowGraph(ctx context.Context,
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collectionID UniqueID,
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metaReplica ReplicaInterface,
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tSafeReplica TSafeReplicaInterface,
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channel Channel,
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factory msgstream.Factory) (*queryNodeFlowGraph, error) {
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ctx1, cancel := context.WithCancel(ctx)
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q := &queryNodeFlowGraph{
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ctx: ctx1,
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cancel: cancel,
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collectionID: collectionID,
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channel: channel,
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flowGraph: flowgraph.NewTimeTickedFlowGraph(ctx1),
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}
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dmStreamNode, err := q.newDmInputNode(ctx1, factory, collectionID, channel)
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if err != nil {
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return nil, err
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}
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var filterDmNode node = newFilteredDmNode(metaReplica, collectionID, channel)
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var insertNode node = newInsertNode(metaReplica, collectionID, channel)
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var serviceTimeNode node = newServiceTimeNode(tSafeReplica, collectionID, channel)
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q.flowGraph.AddNode(dmStreamNode)
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q.flowGraph.AddNode(filterDmNode)
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q.flowGraph.AddNode(insertNode)
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q.flowGraph.AddNode(serviceTimeNode)
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// dmStreamNode
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err = q.flowGraph.SetEdges(dmStreamNode.Name(),
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[]string{},
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[]string{filterDmNode.Name()},
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)
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if err != nil {
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return nil, fmt.Errorf("set edges failed in node: %s, err = %s", dmStreamNode.Name(), err.Error())
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}
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// filterDmNode
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err = q.flowGraph.SetEdges(filterDmNode.Name(),
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[]string{dmStreamNode.Name()},
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[]string{insertNode.Name()},
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)
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if err != nil {
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return nil, fmt.Errorf("set edges failed in node: %s, err = %s", filterDmNode.Name(), err.Error())
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}
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// insertNode
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err = q.flowGraph.SetEdges(insertNode.Name(),
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[]string{filterDmNode.Name()},
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[]string{serviceTimeNode.Name()},
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)
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if err != nil {
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return nil, fmt.Errorf("set edges failed in node: %s, err = %s", insertNode.Name(), err.Error())
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}
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// serviceTimeNode
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err = q.flowGraph.SetEdges(serviceTimeNode.Name(),
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[]string{insertNode.Name()},
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[]string{},
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)
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if err != nil {
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return nil, fmt.Errorf("set edges failed in node: %s, err = %s", serviceTimeNode.Name(), err.Error())
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}
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return q, nil
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}
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// newQueryNodeDeltaFlowGraph returns a new queryNodeFlowGraph
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func newQueryNodeDeltaFlowGraph(ctx context.Context,
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collectionID UniqueID,
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metaReplica ReplicaInterface,
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tSafeReplica TSafeReplicaInterface,
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channel Channel,
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factory msgstream.Factory) (*queryNodeFlowGraph, error) {
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ctx1, cancel := context.WithCancel(ctx)
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q := &queryNodeFlowGraph{
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ctx: ctx1,
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cancel: cancel,
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collectionID: collectionID,
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channel: channel,
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flowGraph: flowgraph.NewTimeTickedFlowGraph(ctx1),
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}
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dmStreamNode, err := q.newDmInputNode(ctx1, factory, collectionID, channel)
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if err != nil {
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return nil, err
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}
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var filterDeleteNode node = newFilteredDeleteNode(metaReplica, collectionID, channel)
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var deleteNode node = newDeleteNode(metaReplica, collectionID, channel)
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var serviceTimeNode node = newServiceTimeNode(tSafeReplica, collectionID, channel)
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q.flowGraph.AddNode(dmStreamNode)
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q.flowGraph.AddNode(filterDeleteNode)
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q.flowGraph.AddNode(deleteNode)
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q.flowGraph.AddNode(serviceTimeNode)
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// dmStreamNode
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err = q.flowGraph.SetEdges(dmStreamNode.Name(),
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[]string{},
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[]string{filterDeleteNode.Name()},
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)
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if err != nil {
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return nil, fmt.Errorf("set edges failed in node: %s, err = %s", dmStreamNode.Name(), err.Error())
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}
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// filterDmNode
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err = q.flowGraph.SetEdges(filterDeleteNode.Name(),
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[]string{dmStreamNode.Name()},
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[]string{deleteNode.Name()},
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)
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if err != nil {
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return nil, fmt.Errorf("set edges failed in node: %s, err = %s", filterDeleteNode.Name(), err.Error())
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}
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// insertNode
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err = q.flowGraph.SetEdges(deleteNode.Name(),
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[]string{filterDeleteNode.Name()},
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[]string{serviceTimeNode.Name()},
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)
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if err != nil {
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return nil, fmt.Errorf("set edges failed in node: %s, err = %s", deleteNode.Name(), err.Error())
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}
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// serviceTimeNode
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err = q.flowGraph.SetEdges(serviceTimeNode.Name(),
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[]string{deleteNode.Name()},
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[]string{},
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)
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if err != nil {
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return nil, fmt.Errorf("set edges failed in node: %s, err = %s", serviceTimeNode.Name(), err.Error())
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}
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return q, nil
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}
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// newDmInputNode returns a new inputNode
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func (q *queryNodeFlowGraph) newDmInputNode(ctx context.Context, factory msgstream.Factory, collectionID UniqueID, channel Channel) (*flowgraph.InputNode, error) {
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insertStream, err := factory.NewTtMsgStream(ctx)
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if err != nil {
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return nil, err
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}
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q.dmlStream = insertStream
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maxQueueLength := Params.QueryNodeCfg.FlowGraphMaxQueueLength
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maxParallelism := Params.QueryNodeCfg.FlowGraphMaxParallelism
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name := fmt.Sprintf("dmInputNode-query-%d-%s", collectionID, channel)
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node := flowgraph.NewInputNode(insertStream, name, maxQueueLength, maxParallelism)
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return node, nil
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}
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// consumeFlowGraph would consume by channel and subName
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func (q *queryNodeFlowGraph) consumeFlowGraph(channel Channel, subName ConsumeSubName) error {
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if q.dmlStream == nil {
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return errors.New("null dml message stream in flow graph")
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}
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q.dmlStream.AsConsumer([]string{channel}, subName)
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log.Info("query node flow graph consumes from pChannel",
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zap.Any("collectionID", q.collectionID),
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zap.Any("channel", channel),
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zap.Any("subName", subName),
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)
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q.consumerCnt++
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metrics.QueryNodeNumConsumers.WithLabelValues(fmt.Sprint(Params.QueryNodeCfg.GetNodeID())).Inc()
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return nil
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}
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// consumeFlowGraphFromLatest would consume from latest by channel and subName
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func (q *queryNodeFlowGraph) consumeFlowGraphFromLatest(channel Channel, subName ConsumeSubName) error {
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if q.dmlStream == nil {
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return errors.New("null dml message stream in flow graph")
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}
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q.dmlStream.AsConsumerWithPosition([]string{channel}, subName, mqwrapper.SubscriptionPositionLatest)
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log.Info("query node flow graph consumes from pChannel",
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zap.Any("collectionID", q.collectionID),
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zap.Any("channel", channel),
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zap.Any("subName", subName),
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)
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q.consumerCnt++
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metrics.QueryNodeNumConsumers.WithLabelValues(fmt.Sprint(Params.QueryNodeCfg.GetNodeID())).Inc()
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return nil
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}
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// seekQueryNodeFlowGraph would seek by position
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func (q *queryNodeFlowGraph) seekQueryNodeFlowGraph(position *internalpb.MsgPosition) error {
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q.dmlStream.AsConsumer([]string{position.ChannelName}, position.MsgGroup)
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err := q.dmlStream.Seek([]*internalpb.MsgPosition{position})
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log.Info("query node flow graph seeks from pChannel",
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zap.Any("collectionID", q.collectionID),
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zap.Any("channel", position.ChannelName),
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)
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q.consumerCnt++
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metrics.QueryNodeNumConsumers.WithLabelValues(fmt.Sprint(Params.QueryNodeCfg.GetNodeID())).Inc()
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return err
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}
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// close would close queryNodeFlowGraph
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func (q *queryNodeFlowGraph) close() {
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q.cancel()
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q.flowGraph.Close()
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if q.dmlStream != nil && q.consumerCnt > 0 {
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metrics.QueryNodeNumConsumers.WithLabelValues(fmt.Sprint(Params.QueryNodeCfg.GetNodeID())).Sub(float64(q.consumerCnt))
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}
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log.Info("stop query node flow graph",
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zap.Any("collectionID", q.collectionID),
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zap.Any("channel", q.channel),
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)
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}
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