/
service.go
73 lines (61 loc) · 1.71 KB
/
service.go
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package ssh
import (
"context"
"github.com/Fcou/web-frame/framework"
"github.com/Fcou/web-frame/framework/contract"
"golang.org/x/crypto/ssh"
"sync"
)
// HadeSSH 代表fcou框架的ssh实现
type HadeSSH struct {
container framework.Container // 服务容器
clients map[string]*ssh.Client // key为uniqKey, value为ssh.Client(连接池)
lock *sync.RWMutex
}
// NewHadeSSH 代表实例化Client
func NewHadeSSH(params ...interface{}) (interface{}, error) {
container := params[0].(framework.Container)
clients := make(map[string]*ssh.Client)
lock := &sync.RWMutex{}
return &HadeSSH{
container: container,
clients: clients,
lock: lock,
}, nil
}
// GetClient 获取Client实例
func (app *HadeSSH) GetClient(option ...contract.SSHOption) (*ssh.Client, error) {
logService := app.container.MustMake(contract.LogKey).(contract.Log)
// 读取默认配置
config := GetBaseConfig(app.container)
// option对opt进行修改
for _, opt := range option {
if err := opt(app.container, config); err != nil {
return nil, err
}
}
// 如果最终的config没有设置dsn,就生成dsn
key := config.UniqKey()
// 判断是否已经实例化了
app.lock.RLock()
if db, ok := app.clients[key]; ok {
app.lock.RUnlock()
return db, nil
}
app.lock.RUnlock()
// 没有实例化,那么就要进行实例化操作
app.lock.Lock()
defer app.lock.Unlock()
// 实例化
addr := config.Host + ":" + config.Port
client, err := ssh.Dial(config.NetWork, addr, config.ClientConfig)
if err != nil {
logService.Error(context.Background(), "ssh dial error", map[string]interface{}{
"err": err,
"addr": addr,
})
}
// 挂载到map中,结束配置
app.clients[key] = client
return client, nil
}