mirror of
https://gitee.com/milvus-io/milvus.git
synced 2024-12-01 11:29:48 +08:00
103 lines
2.6 KiB
Go
103 lines
2.6 KiB
Go
// Copyright (C) 2019-2020 Zilliz. All rights reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "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 distributed under the License
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// is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
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// or implied. See the License for the specific language governing permissions and limitations under the License.
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package datanode
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import (
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"encoding/binary"
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"errors"
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"go.uber.org/zap"
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"github.com/milvus-io/milvus/internal/log"
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)
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// DeleteNode is to process delete msg, flush delete info into storage.
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type deleteNode struct {
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BaseNode
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channelName string
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replica Replica
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flushCh <-chan *flushMsg
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}
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func (dn *deleteNode) Name() string {
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return "deleteNode"
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}
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func (dn *deleteNode) Close() {
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log.Info("Flowgraph Delete Node closing")
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}
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func (dn *deleteNode) Operate(in []Msg) []Msg {
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log.Debug("deleteNode Operating")
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if len(in) != 1 {
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log.Warn("Invalid operate message input in deleteNode", zap.Int("input length", len(in)))
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return []Msg{}
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}
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_, ok := in[0].(*MsgStreamMsg)
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if !ok {
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log.Warn("type assertion failed for MsgStreamMsg")
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return []Msg{}
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}
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select {
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case fmsg := <-dn.flushCh:
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currentSegID := fmsg.segmentID
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log.Debug("DeleteNode receives flush message",
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zap.Int64("segmentID", currentSegID),
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zap.Int64("collectionID", fmsg.collectionID),
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)
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default:
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}
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return []Msg{}
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}
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// filterSegmentByPK returns the bloom filter check result.
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// If the key may exists in the segment, returns it in map.
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// If the key not exists in the segment, the segment is filter out.
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func (dn *deleteNode) filterSegmentByPK(pks []int64) (map[int64][]int64, error) {
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if pks == nil {
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return nil, errors.New("pks is nil")
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}
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results := make(map[int64][]int64)
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buf := make([]byte, 8)
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segments := dn.replica.getSegments(dn.channelName)
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for _, segment := range segments {
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for _, pk := range pks {
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binary.BigEndian.PutUint64(buf, uint64(pk))
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exist := segment.pkFilter.Test(buf)
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if exist {
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results[pk] = append(results[pk], segment.segmentID)
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}
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}
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}
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return results, nil
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}
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func newDeleteNode(replica Replica, channelName string, flushCh <-chan *flushMsg) *deleteNode {
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baseNode := BaseNode{}
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baseNode.SetMaxParallelism(Params.FlowGraphMaxQueueLength)
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return &deleteNode{
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BaseNode: baseNode,
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channelName: channelName,
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replica: replica,
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flushCh: flushCh,
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}
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}
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