Golang Logger.Errorf方法代码示例

// NewRepo 创建mysql数据实现实例
func NewRepo(conf *config.Config, log logger.Logger) (*MySQLRepo, error) {
	var connection string
	if conf.Repo.ConnectionIsCrypted != "" {
		str, err := util.RSADecrypt(conf.Rsa.PrivateKey, conf.Repo.ConnectionIsCrypted)
		if err != nil {
			return nil, err
		}
		connection = str
	} else if conf.Repo.Connection != "" {
		connection = conf.Repo.Connection
	}

	if connection == "" {
		return nil, errors.New("请先配置好数据库连接信息!")
	}

	db, err := gorm.Open("mysql", connection)
	if err != nil {
		log.Errorf("database connection failed:%s", err.Error())
		return nil, err
	}
	db.LogMode(true)
	repo := &MySQLRepo{
		conf: conf,
		log:  log,
		db:   &db,
	}

	return repo, nil
}

//get vm pool info
func RunGetVmHostPoolInfo(repo model.Repo, logger logger.Logger, conf *config.Config, deviceId uint) (string, error) {
	device, err := repo.GetDeviceById(deviceId)
	if err != nil {
		return "", err
	}

	storage := conf.Vm.Storage
	if storage == "" {
		storage = "guest_images_lvm"
	}

	var cmdFormat = `LANG=C virsh --connect qemu+ssh://[email protected]%s/system pool-info %s`
	var cmd = fmt.Sprintf(cmdFormat,
		device.Ip,
		storage)
	logger.Debugf("get vm host pool info:%s", cmd)
	var runResult = "执行脚本:\n" + cmd
	bytes, err := util.ExecScript(cmd)
	logger.Debugf("result:%s", string(bytes))
	runResult += "\n\n" + "执行结果:\n" + string(bytes)
	if err != nil {
		logger.Errorf("error:%s", err.Error())
		runResult += "\n\n" + "错误信息:\n" + err.Error()
		return "", errors.New(runResult)
	}
	return string(bytes), nil
}

//get vm info
func RunGetVmInfo(repo model.Repo, logger logger.Logger, vmDeviceId uint) (string, error) {
	vmDevice, err := repo.GetVmDeviceById(vmDeviceId)
	if err != nil {
		return "", err
	}

	device, err := repo.GetDeviceById(vmDevice.DeviceID)
	if err != nil {
		return "", err
	}

	var cmdFormat = `LANG=C virsh --connect qemu+ssh://[email protected]%s/system dominfo %s`
	var cmd = fmt.Sprintf(cmdFormat,
		device.Ip,
		vmDevice.Hostname)
	logger.Debugf("get vm info:%s", cmd)
	var runResult = "执行脚本:\n" + cmd
	bytes, err := util.ExecScript(cmd)
	logger.Debugf("result:%s", string(bytes))
	runResult += "\n\n" + "执行结果:\n" + string(bytes)
	if err != nil {
		logger.Errorf("error:%s", err.Error())
		runResult += "\n\n" + "错误信息:\n" + err.Error()
		return "", errors.New(runResult)
	}
	return string(bytes), nil
}

//delete noVNC token file
func RunDeleteVmNoVncTokenFile(repo model.Repo, logger logger.Logger, vmDeviceId uint) error {
	vmDevice, err := repo.GetVmDeviceById(vmDeviceId)
	if err != nil {
		return err
	}

	var dir = "/etc/cloudboot-server/novnc-tokens"
	var file = vmDevice.Hostname
	logger.Debugf("delete vm novnc token file:%s", dir+"/"+file)
	if util.FileExist(dir + "/" + file) {
		err := os.Remove(dir + "/" + file)
		if err != nil {
			logger.Errorf("error:%s", err.Error())
			return err
		}
	}
	return nil
}

//create noVNC token file
func RunCreateVmNoVncTokenFile(repo model.Repo, logger logger.Logger, vmDeviceId uint) error {
	vmDevice, err := repo.GetVmDeviceById(vmDeviceId)
	if err != nil {
		return err
	}

	device, err := repo.GetDeviceById(vmDevice.DeviceID)
	if err != nil {
		return err
	}

	var newHostname = strings.Replace(vmDevice.Hostname, ":", "_", -1)
	var strFormat = `%s: %s:%s`
	var str = fmt.Sprintf(strFormat,
		newHostname,
		device.Ip,
		vmDevice.VncPort)

	var dir = "/etc/cloudboot-server/novnc-tokens"
	var file = vmDevice.Hostname

	if !util.FileExist(dir) {
		err := os.MkdirAll(dir, 0777)
		if err != nil {
			return err
		}
	}
	//文件已存在,先删除
	if util.FileExist(dir + "/" + file) {
		err := os.Remove(dir + "/" + file)
		if err != nil {
			return err
		}
	}
	logger.Debugf("create vm novnc token file %s:%s", dir+"/"+file, str)
	bytes := []byte(str)
	errCreate := ioutil.WriteFile(dir+"/"+file, bytes, 0644)
	if errCreate != nil {
		logger.Errorf("error:%s", errCreate.Error())
		return errCreate
	}
	return nil
}

//test connect vm host
func RunTestConnectVmHost(repo model.Repo, logger logger.Logger, deviceId uint) (string, error) {
	device, err := repo.GetDeviceById(deviceId)
	if err != nil {
		return "", err
	}

	var cmdFormat = `LANG=C ssh -o UserKnownHostsFile=/dev/null -o StrictHostKeyChecking=no -o BatchMode=yes -o ConnectTimeout=3 [email protected]%s 'w'`
	var cmd = fmt.Sprintf(cmdFormat,
		device.Ip)
	logger.Debugf("test connect vm host:%s", cmd)
	var runResult = "执行脚本:\n" + cmd
	bytes, err := util.ExecScript(cmd)
	logger.Debugf("result:%s", string(bytes))
	runResult += "\n\n" + "执行结果:\n" + string(bytes)
	if err != nil {
		logger.Errorf("error:%s", err.Error())
		runResult += "\n\n" + "错误信息:\n" + err.Error()
		return "", errors.New(runResult)
	}
	return string(bytes), nil
}