milvus/internal/querynode/flow_graph_service_time_node.go

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// 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 querynode
import (
"context"
"github.com/milvus-io/milvus/internal/log"
"github.com/milvus-io/milvus/internal/msgstream"
"github.com/milvus-io/milvus/internal/proto/commonpb"
"github.com/milvus-io/milvus/internal/proto/internalpb"
"github.com/milvus-io/milvus/internal/util/flowgraph"
"go.uber.org/zap"
)
type serviceTimeNode struct {
baseNode
collectionID UniqueID
replica ReplicaInterface
timeTickMsgStream msgstream.MsgStream
}
func (stNode *serviceTimeNode) Name() string {
return "stNode"
}
func (stNode *serviceTimeNode) Close() {
stNode.timeTickMsgStream.Close()
}
func (stNode *serviceTimeNode) Operate(in []flowgraph.Msg) []flowgraph.Msg {
//log.Debug("Do serviceTimeNode operation")
if len(in) != 1 {
log.Error("Invalid operate message input in serviceTimeNode, input length = ", zap.Int("input node", len(in)))
// TODO: add error handling
}
serviceTimeMsg, ok := in[0].(*serviceTimeMsg)
if !ok {
log.Error("type assertion failed for serviceTimeMsg")
// TODO: add error handling
}
if serviceTimeMsg == nil {
return []Msg{}
}
// update service time
ts := stNode.replica.getTSafe(stNode.collectionID)
if ts != nil {
ts.set(serviceTimeMsg.timeRange.timestampMax)
//log.Debug("update tSafe:",
// zap.Int64("tSafe", int64(serviceTimeMsg.timeRange.timestampMax)),
// zap.Int64("collectionID", stNode.collectionID))
}
if err := stNode.sendTimeTick(serviceTimeMsg.timeRange.timestampMax); err != nil {
log.Error("Error: send time tick into pulsar channel failed", zap.Error(err))
}
var res Msg = &gcMsg{
gcRecord: serviceTimeMsg.gcRecord,
timeRange: serviceTimeMsg.timeRange,
}
return []Msg{res}
}
func (stNode *serviceTimeNode) sendTimeTick(ts Timestamp) error {
msgPack := msgstream.MsgPack{}
timeTickMsg := msgstream.TimeTickMsg{
BaseMsg: msgstream.BaseMsg{
BeginTimestamp: ts,
EndTimestamp: ts,
HashValues: []uint32{0},
},
TimeTickMsg: internalpb.TimeTickMsg{
Base: &commonpb.MsgBase{
MsgType: commonpb.MsgType_TimeTick,
MsgID: 0,
Timestamp: ts,
SourceID: Params.QueryNodeID,
},
},
}
msgPack.Msgs = append(msgPack.Msgs, &timeTickMsg)
return stNode.timeTickMsgStream.Produce(&msgPack)
}
func newServiceTimeNode(ctx context.Context, replica ReplicaInterface, factory msgstream.Factory, collectionID UniqueID) *serviceTimeNode {
maxQueueLength := Params.FlowGraphMaxQueueLength
maxParallelism := Params.FlowGraphMaxParallelism
baseNode := baseNode{}
baseNode.SetMaxQueueLength(maxQueueLength)
baseNode.SetMaxParallelism(maxParallelism)
timeTimeMsgStream, _ := factory.NewMsgStream(ctx)
timeTimeMsgStream.AsProducer([]string{Params.QueryTimeTickChannelName})
log.Debug("querynode AsProducer: " + Params.QueryTimeTickChannelName)
return &serviceTimeNode{
baseNode: baseNode,
collectionID: collectionID,
replica: replica,
timeTickMsgStream: timeTimeMsgStream,
}
}