milvus/internal/datanode/flow_graph_time_tick_node.go

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// 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 (
"fmt"
"reflect"
"time"
"go.uber.org/atomic"
"go.uber.org/zap"
"github.com/milvus-io/milvus-proto/go-api/v2/msgpb"
"github.com/milvus-io/milvus/internal/datanode/metacache"
"github.com/milvus-io/milvus/internal/datanode/writebuffer"
"github.com/milvus-io/milvus/internal/util/flowgraph"
"github.com/milvus-io/milvus/pkg/log"
"github.com/milvus-io/milvus/pkg/util/tsoutil"
)
// make sure ttNode implements flowgraph.Node
var _ flowgraph.Node = (*ttNode)(nil)
type ttNode struct {
BaseNode
vChannelName string
metacache metacache.MetaCache
writeBufferManager writebuffer.BufferManager
lastUpdateTime *atomic.Time
cpUpdater *channelCheckpointUpdater
dropMode *atomic.Bool
}
// Name returns node name, implementing flowgraph.Node
func (ttn *ttNode) Name() string {
return fmt.Sprintf("ttNode-%s", ttn.vChannelName)
}
func (ttn *ttNode) IsValidInMsg(in []Msg) bool {
if !ttn.BaseNode.IsValidInMsg(in) {
return false
}
_, ok := in[0].(*flowGraphMsg)
if !ok {
log.Warn("type assertion failed for flowGraphMsg", zap.String("name", reflect.TypeOf(in[0]).Name()))
return false
}
return true
}
func (ttn *ttNode) Close() {
}
// Operate handles input messages, implementing flowgraph.Node
func (ttn *ttNode) Operate(in []Msg) []Msg {
fgMsg := in[0].(*flowGraphMsg)
if fgMsg.dropCollection {
ttn.dropMode.Store(true)
}
// skip updating checkpoint for drop collection
// even if its the close msg
if ttn.dropMode.Load() {
log.RatedInfo(1.0, "ttnode in dropMode", zap.String("channel", ttn.vChannelName))
return []Msg{}
}
curTs, _ := tsoutil.ParseTS(fgMsg.timeRange.timestampMax)
if fgMsg.IsCloseMsg() {
if len(fgMsg.endPositions) > 0 {
channelPos, _, err := ttn.writeBufferManager.GetCheckpoint(ttn.vChannelName)
if err != nil {
log.Warn("channel removed", zap.String("channel", ttn.vChannelName), zap.Error(err))
return []Msg{}
}
log.Info("flowgraph is closing, force update channel CP",
zap.Time("cpTs", tsoutil.PhysicalTime(channelPos.GetTimestamp())),
zap.String("channel", channelPos.GetChannelName()))
ttn.updateChannelCP(channelPos, curTs)
}
return in
}
// Do not block and async updateCheckPoint
channelPos, needUpdate, err := ttn.writeBufferManager.GetCheckpoint(ttn.vChannelName)
if err != nil {
log.Warn("channel removed", zap.String("channel", ttn.vChannelName), zap.Error(err))
return []Msg{}
}
nonBlockingNotify := func() {
ttn.updateChannelCP(channelPos, curTs)
}
if needUpdate || curTs.Sub(ttn.lastUpdateTime.Load()) >= updateChanCPInterval {
nonBlockingNotify()
return []Msg{}
}
return []Msg{}
}
func (ttn *ttNode) updateChannelCP(channelPos *msgpb.MsgPosition, curTs time.Time) error {
callBack := func() error {
channelCPTs, _ := tsoutil.ParseTS(channelPos.GetTimestamp())
ttn.lastUpdateTime.Store(curTs)
ttn.writeBufferManager.NotifyCheckpointUpdated(ttn.vChannelName, channelPos.GetTimestamp())
log.Debug("UpdateChannelCheckpoint success",
zap.String("channel", ttn.vChannelName),
zap.Uint64("cpTs", channelPos.GetTimestamp()),
zap.Time("cpTime", channelCPTs))
return nil
}
err := ttn.cpUpdater.updateChannelCP(channelPos, callBack)
return err
}
func newTTNode(config *nodeConfig, wbManager writebuffer.BufferManager, cpUpdater *channelCheckpointUpdater) (*ttNode, error) {
baseNode := BaseNode{}
baseNode.SetMaxQueueLength(Params.DataNodeCfg.FlowGraphMaxQueueLength.GetAsInt32())
baseNode.SetMaxParallelism(Params.DataNodeCfg.FlowGraphMaxParallelism.GetAsInt32())
tt := &ttNode{
BaseNode: baseNode,
vChannelName: config.vChannelName,
metacache: config.metacache,
writeBufferManager: wbManager,
lastUpdateTime: atomic.NewTime(time.Time{}), // set to Zero to update channel checkpoint immediately after fg started
cpUpdater: cpUpdater,
dropMode: atomic.NewBool(false),
}
return tt, nil
}