mirror of
https://gitee.com/milvus-io/milvus.git
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100 lines
2.9 KiB
Go
100 lines
2.9 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 msgdispatcher
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import (
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"sync"
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"github.com/milvus-io/milvus-proto/go-api/msgpb"
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"go.uber.org/zap"
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"github.com/milvus-io/milvus/pkg/log"
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"github.com/milvus-io/milvus/pkg/mq/msgstream"
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"github.com/milvus-io/milvus/pkg/mq/msgstream/mqwrapper"
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"github.com/milvus-io/milvus/pkg/util/funcutil"
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)
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type (
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Pos = msgpb.MsgPosition
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MsgPack = msgstream.MsgPack
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SubPos = mqwrapper.SubscriptionInitialPosition
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)
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type Client interface {
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Register(vchannel string, pos *Pos, subPos SubPos) (<-chan *MsgPack, error)
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Deregister(vchannel string)
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}
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var _ Client = (*client)(nil)
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type client struct {
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role string
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nodeID int64
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managerMu sync.Mutex
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managers map[string]DispatcherManager // pchannel -> DispatcherManager
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factory msgstream.Factory
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}
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func NewClient(factory msgstream.Factory, role string, nodeID int64) Client {
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return &client{
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role: role,
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nodeID: nodeID,
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managers: make(map[string]DispatcherManager),
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factory: factory,
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}
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}
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func (c *client) Register(vchannel string, pos *Pos, subPos SubPos) (<-chan *MsgPack, error) {
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log := log.With(zap.String("role", c.role),
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zap.Int64("nodeID", c.nodeID), zap.String("vchannel", vchannel))
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pchannel := funcutil.ToPhysicalChannel(vchannel)
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c.managerMu.Lock()
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defer c.managerMu.Unlock()
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manager, ok := c.managers[pchannel]
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if !ok {
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manager = NewDispatcherManager(pchannel, c.role, c.nodeID, c.factory)
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c.managers[pchannel] = manager
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go manager.Run()
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}
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ch, err := manager.Add(vchannel, pos, subPos)
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if err != nil {
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if manager.Num() == 0 {
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manager.Close()
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delete(c.managers, pchannel)
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}
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log.Error("register failed", zap.Error(err))
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return nil, err
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}
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log.Info("register done")
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return ch, nil
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}
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func (c *client) Deregister(vchannel string) {
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pchannel := funcutil.ToPhysicalChannel(vchannel)
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c.managerMu.Lock()
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defer c.managerMu.Unlock()
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if manager, ok := c.managers[pchannel]; ok {
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manager.Remove(vchannel)
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if manager.Num() == 0 {
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manager.Close()
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delete(c.managers, pchannel)
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}
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log.Info("deregister done", zap.String("role", c.role),
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zap.Int64("nodeID", c.nodeID), zap.String("vchannel", vchannel))
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}
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}
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