milvus/pkg/mq/msgdispatcher/client.go
SimFG 26f06dd732
Format the code (#27275)
Signed-off-by: SimFG <bang.fu@zilliz.com>
2023-09-21 09:45:27 +08:00

117 lines
3.4 KiB
Go

// 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 msgdispatcher
import (
"context"
"sync"
"go.uber.org/zap"
"github.com/milvus-io/milvus-proto/go-api/v2/msgpb"
"github.com/milvus-io/milvus/pkg/log"
"github.com/milvus-io/milvus/pkg/mq/msgstream"
"github.com/milvus-io/milvus/pkg/mq/msgstream/mqwrapper"
"github.com/milvus-io/milvus/pkg/util/funcutil"
)
type (
Pos = msgpb.MsgPosition
MsgPack = msgstream.MsgPack
SubPos = mqwrapper.SubscriptionInitialPosition
)
type Client interface {
Register(ctx context.Context, vchannel string, pos *Pos, subPos SubPos) (<-chan *MsgPack, error)
Deregister(vchannel string)
Close()
}
var _ Client = (*client)(nil)
type client struct {
role string
nodeID int64
managers map[string]DispatcherManager
managerMut sync.Mutex
factory msgstream.Factory
}
func NewClient(factory msgstream.Factory, role string, nodeID int64) Client {
return &client{
role: role,
nodeID: nodeID,
factory: factory,
// managers: typeutil.NewConcurrentMap[string, DispatcherManager](),
managers: make(map[string]DispatcherManager),
}
}
func (c *client) Register(ctx context.Context, vchannel string, pos *Pos, subPos SubPos) (<-chan *MsgPack, error) {
log := log.With(zap.String("role", c.role),
zap.Int64("nodeID", c.nodeID), zap.String("vchannel", vchannel))
pchannel := funcutil.ToPhysicalChannel(vchannel)
c.managerMut.Lock()
defer c.managerMut.Unlock()
var manager DispatcherManager
manager, ok := c.managers[pchannel]
if !ok {
manager = NewDispatcherManager(pchannel, c.role, c.nodeID, c.factory)
c.managers[pchannel] = manager
go manager.Run()
}
ch, err := manager.Add(ctx, vchannel, pos, subPos)
if err != nil {
if manager.Num() == 0 {
manager.Close()
delete(c.managers, pchannel)
}
log.Error("register failed", zap.Error(err))
return nil, err
}
log.Info("register done")
return ch, nil
}
func (c *client) Deregister(vchannel string) {
pchannel := funcutil.ToPhysicalChannel(vchannel)
c.managerMut.Lock()
defer c.managerMut.Unlock()
if manager, ok := c.managers[pchannel]; ok {
manager.Remove(vchannel)
if manager.Num() == 0 {
manager.Close()
delete(c.managers, pchannel)
}
log.Info("deregister done", zap.String("role", c.role),
zap.Int64("nodeID", c.nodeID), zap.String("vchannel", vchannel))
}
}
func (c *client) Close() {
log := log.With(zap.String("role", c.role),
zap.Int64("nodeID", c.nodeID))
c.managerMut.Lock()
defer c.managerMut.Unlock()
for pchannel, manager := range c.managers {
log.Info("close manager", zap.String("channel", pchannel))
delete(c.managers, pchannel)
manager.Close()
}
log.Info("dispatcher client closed")
}