/*

 * Copyright (c) Huawei Technologies Co., Ltd. 2025. All rights reserved.

 *

 * 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 clusterctrl



import (

	"errors"

	"fmt"



	"cli/utils"

)



// Exec a command on master IP

func Exec(cfg *utils.ClusterConfig, executor RemoteExecutor, execCommand string) error {

	if len(cfg.MasterIp) != 1 {

		return errors.New("only accept one master ip")

	}

	stream, execErr := executor.RunCommandStream(cfg.MasterIp[0], execCommand, cfg.Env)

	if execErr != nil {

		return execErr

	}

	if stream == nil {

		return errors.New("unexpected nil pointer of the output stream when exec command")

	}

	finished := false

	for finished == false {

		select {

		case r, ok := <-stream:

			finished = !ok

			if finished {

				return nil

			}

			if r.Error != nil {

				return r.Error

			}

			fmt.Printf("%s", r.Output)

		}

	}

	return nil

}