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mayfly-go/server/internal/machine/mcm/client_cache.go
2023-10-30 17:34:56 +08:00

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package mcm
import (
"mayfly-go/internal/common/consts"
"mayfly-go/pkg/cache"
"time"
)
// 机器客户端连接缓存,指定时间内没有访问则会被关闭
var cliCache = cache.NewTimedCache(consts.MachineConnExpireTime, 5*time.Second).
WithUpdateAccessTime(true).
OnEvicted(func(_, value any) {
value.(*Cli).Close()
})
func init() {
AddCheckSshTunnelMachineUseFunc(func(machineId int) bool {
// 遍历所有机器连接实例若存在机器连接实例使用该ssh隧道机器则返回true表示还在使用中...
items := cliCache.Items()
for _, v := range items {
sshTunnelMachine := v.Value.(*Cli).Info.SshTunnelMachine
if sshTunnelMachine != nil && int(sshTunnelMachine.Id) == machineId {
return true
}
}
return false
})
}
// 从缓存中获取客户端信息,不存在则回调获取机器信息函数,并新建
func GetMachineCli(machineId uint64, getMachine func(uint64) (*MachineInfo, error)) (*Cli, error) {
if load, ok := cliCache.Get(machineId); ok {
return load.(*Cli), nil
}
me, err := getMachine(machineId)
if err != nil {
return nil, err
}
c, err := me.Conn()
if err != nil {
return nil, err
}
cliCache.Put(machineId, c)
return c, nil
}
// 是否存在指定id的客户端连接
func HasCli(machineId uint64) bool {
if _, ok := cliCache.Get(machineId); ok {
return true
}
return false
}
// 删除指定机器客户端,并关闭客户端连接
func DeleteCli(id uint64) {
cliCache.Delete(id)
}