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session_manager.go
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/
session_manager.go
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// Copyright 2019 The Bitalostored author and other contributors.
//
// Licensed 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 resp
import (
"sync"
"time"
"github.com/zuoyebang/bitalostored/proxy/internal/dostats"
"github.com/zuoyebang/bitalostored/proxy/internal/log"
)
var globalSessionManager *SessionManager
func init() {
globalSessionManager = NewSessionManager()
go globalSessionManager.run()
}
type SessionManager struct {
mu sync.RWMutex
sessions sync.Map
}
func NewSessionManager() *SessionManager {
return &SessionManager{
mu: sync.RWMutex{},
sessions: sync.Map{},
}
}
func (m *SessionManager) AddSession(s *Session) {
m.sessions.Store(s, struct{}{})
}
func (m *SessionManager) run() {
for {
time.Sleep(time.Second * 2)
closeNum := 0
m.sessions.Range(func(key, _ any) bool {
s, ok := key.(*Session)
if !ok || s.activeQuit {
m.sessions.Delete(key)
} else {
s.Stats.FlushOpStats(dostats.CmdServer)
closed := s.closeSpareConn()
if closed {
closeNum++
}
}
return true
})
if closeNum >= 2 {
log.Infof("spare sessions closed num:%d", closeNum)
}
}
}