install

Documentation

Overview

Copyright © 2021-2022 Nikita Ivanovski info@slnt-opp.xyz

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.

Copyright © 2021-2022 Nikita Ivanovski info@slnt-opp.xyz

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.

Index

• Variables
• func DownloadFile(filepath string, url string) error
• type Asset
• type Release

Variables

var CliCmd = &cobra.Command{
	Use:   "cli [version]",
	Short: "Install(update) NoCloud CLI",
	RunE: func(cmd *cobra.Command, args []string) (err error) {
		var version string
		if len(args) == 0 {
			version = "latest"
		} else {
			version = args[0]
		}
		fmt.Println("Looking for tag: ", version)

		client := github.NewClient(nil)
		repo, _, err := client.Repositories.Get(context.Background(), "slntopp", "nocloud-cli")
		if err != nil {
			return err
		}

		release := repo.GetReleasesURL()
		release = strings.Replace(release, "{/id}", "/"+version, 1)
		resp, err := http.Get(release)
		if err != nil {
			return err
		}
		if resp.StatusCode == 404 {
			return fmt.Errorf("Release tag '%s' wasn't found", version)
		}

		body, err := ioutil.ReadAll(resp.Body)
		if err != nil {
			return err
		}

		var r Release
		json.Unmarshal(body, &r)

		fmt.Println("Found tag: ", r.Tag)
		asset_base := fmt.Sprintf("nocloud-%s-%s-%s", r.Tag, runtime.GOOS, runtime.GOARCH)
		asset_name := asset_base + ".tar.gz"
		var asset_url string
		for _, asset := range r.Assets {
			if asset.Name == asset_name {
				fmt.Println("Found asset: ", asset.Name)
				asset_url = asset.DownloadUrl
				goto asset_found
			}
		}
		return errors.New("required asset not found")

	asset_found:
		fmt.Println("Downloading: ", asset_url)
		err = DownloadFile(asset_name, asset_url)
		if err != nil {
			return err
		}

		fmt.Println("Decompressing: ", asset_name)
		targz.Extract(asset_name, asset_base)

		var path string
		pathB, err := exec.Command("which", "nocloud").Output()
		if err == nil {
			path = string(pathB)
			fmt.Println("Found nocloud executable at '" + path + "'. Replacing.")
		} else {
			fmt.Println("nocloud executable going to be put into '/usr/local/bin'")
			path = "/usr/local/bin"
		}

		debug, _ := cmd.Flags().GetBool("debug")

		if debug {
			fmt.Println("mv", "./"+asset_base+"/nocloud", path+"/nocloud")
		}

		err = os.Rename("./"+asset_base+"/nocloud", path+"/nocloud")

		if !debug {
			os.RemoveAll(asset_base)
			os.Remove(asset_base + ".tar.gz")
		}

		os.Chmod(path+"/nocloud", os.FileMode(0755))

		fmt.Println("Installation Finished")
		return err
	},
}

installCmd represents the install command

Functions

func DownloadFile

func DownloadFile(filepath string, url string) error

Types

type Asset

type Asset struct {
	Name        string `json:"name"`
	DownloadUrl string `json:"browser_download_url"`
}

type Release

type Release struct {
	Url    string  `json:"html_url"`
	Tag    string  `json:"tag_name"`
	Assets []Asset `json:"assets"`
}