mirror of
https://gitee.com/milvus-io/milvus.git
synced 2024-12-01 11:29:48 +08:00
131 lines
3.4 KiB
Go
131 lines
3.4 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 rootcoord
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import (
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"fmt"
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"sync"
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"go.uber.org/atomic"
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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/msgstream"
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)
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type dmlChannels struct {
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core *Core
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namePrefix string
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capacity int64
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refcnt sync.Map
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idx *atomic.Int64
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pool sync.Map
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}
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func newDmlChannels(c *Core, chanNamePrefix string, chanNum int64) *dmlChannels {
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d := &dmlChannels{
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core: c,
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namePrefix: chanNamePrefix,
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capacity: chanNum,
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refcnt: sync.Map{},
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idx: atomic.NewInt64(0),
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pool: sync.Map{},
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}
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var i int64
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for i = 0; i < chanNum; i++ {
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name := fmt.Sprintf("%s_%d", d.namePrefix, i)
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ms, err := c.msFactory.NewMsgStream(c.ctx)
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if err != nil {
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log.Error("add msgstream failed", zap.String("name", name), zap.Error(err))
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panic("add msgstream failed")
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}
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ms.AsProducer([]string{name})
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d.pool.Store(name, &ms)
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}
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log.Debug("init dml channels", zap.Int64("num", chanNum))
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return d
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}
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func (d *dmlChannels) GetDmlMsgStreamName() string {
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cnt := d.idx.Load()
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name := fmt.Sprintf("%s_%d", d.namePrefix, cnt)
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d.idx.Store((cnt + 1) % d.capacity)
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return name
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}
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// ListChannels lists all dml channel names
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func (d *dmlChannels) ListChannels() []string {
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chanNames := make([]string, 0)
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d.refcnt.Range(
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func(k, v interface{}) bool {
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chanNames = append(chanNames, k.(string))
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return true
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})
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return chanNames
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}
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// GetNumChannels get current dml channel count
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func (d *dmlChannels) GetNumChannels() int {
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return len(d.ListChannels())
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}
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// Broadcast broadcasts msg pack into specified channel
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func (d *dmlChannels) Broadcast(chanNames []string, pack *msgstream.MsgPack) error {
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for _, chanName := range chanNames {
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// only in-use chanName exist in refcnt
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if _, ok := d.refcnt.Load(chanName); !ok {
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return fmt.Errorf("channel %s not exist", chanName)
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}
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v, _ := d.pool.Load(chanName)
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if err := (*(v.(*msgstream.MsgStream))).Broadcast(pack); err != nil {
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return err
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}
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}
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return nil
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}
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// AddProducerChannels add named channels as producer
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func (d *dmlChannels) AddProducerChannels(names ...string) {
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for _, name := range names {
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if _, ok := d.pool.Load(name); !ok {
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log.Error("invalid channel name", zap.String("chanName", name))
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panic("invalid channel name")
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} else {
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var cnt int64
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if _, ok := d.refcnt.Load(name); !ok {
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cnt = 1
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} else {
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v, _ := d.refcnt.Load(name)
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cnt = v.(int64) + 1
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}
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d.refcnt.Store(name, cnt)
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log.Debug("assign dml channel", zap.String("chanName", name), zap.Int64("refcnt", cnt))
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}
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}
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}
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// RemoveProducerChannels removes specified channels
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func (d *dmlChannels) RemoveProducerChannels(names ...string) {
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for _, name := range names {
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v, ok := d.refcnt.Load(name)
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if ok {
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cnt := v.(int64)
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if cnt > 1 {
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d.refcnt.Store(name, cnt-1)
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} else {
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d.refcnt.Delete(name)
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}
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}
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}
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}
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