mirror of
https://github.com/alexellis/arkade.git
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The get command downloads tools from GitHub release pages and from custom URLs using a go template to define the URL and filename according to OS and architecture. Tested with unit tests and with the two initial apps: faas-cli and kubectl. Signed-off-by: Alex Ellis (OpenFaaS Ltd) <alexellis2@gmail.com>
112 lines
2.2 KiB
Go
112 lines
2.2 KiB
Go
// Copyright (c) arkade author(s) 2020. All rights reserved.
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// Licensed under the MIT license. See LICENSE file in the project root for full license information.
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package cmd
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import (
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"fmt"
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"io"
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"net/http"
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"os"
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"path"
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"strings"
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"github.com/alexellis/arkade/pkg/env"
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"github.com/alexellis/arkade/pkg/get"
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"github.com/spf13/cobra"
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)
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func MakeGet() *cobra.Command {
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tools := get.MakeTools()
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var command = &cobra.Command{
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Use: "get",
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Short: "Get a release of a tool or application and install it on your local computer.",
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Example: ` arkade get kubectl
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arkade get openfaas`,
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SilenceUsage: true,
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}
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command.RunE = func(cmd *cobra.Command, args []string) error {
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if len(args) == 0 {
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fmt.Println(arkadeGet)
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return nil
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}
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var tool *get.Tool
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if len(args) == 1 {
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for _, t := range tools {
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if t.Name == args[0] {
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tool = &t
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break
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}
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}
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}
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if tool == nil {
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return fmt.Errorf("cannot get tool: %s", args[0])
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}
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fmt.Printf("Downloading %s\n", tool.Name)
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arch, operatingSystem := env.GetClientArch()
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version := ""
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downloadURL, err := get.GetDownloadURL(tool, strings.ToLower(operatingSystem), strings.ToLower(arch), version)
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if err != nil {
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return err
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}
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fmt.Println(downloadURL)
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res, err := http.DefaultClient.Get(downloadURL)
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if err != nil {
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return err
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}
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if res.Body != nil {
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defer res.Body.Close()
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}
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if res.StatusCode != http.StatusOK {
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return fmt.Errorf("incorrect status for downloading tool: %d", res.StatusCode)
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}
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_, fileName := path.Split(downloadURL)
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tmp := os.TempDir()
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outFilePath := path.Join(tmp, fileName)
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out, err := os.Create(outFilePath)
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if err != nil {
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return err
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}
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defer out.Close()
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if _, err = io.Copy(out, res.Body); err != nil {
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return err
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}
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finalName := tool.Name
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if strings.Contains(strings.ToLower(operatingSystem), "mingw") {
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finalName = finalName + ".exe"
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}
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fmt.Printf(`Tool written to: %s
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Run the following to copy to install the tool:
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chmod +x %s
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sudo install -m 755 %s /usr/local/bin/%s
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`, outFilePath, outFilePath, outFilePath, finalName)
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return err
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}
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return command
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}
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const arkadeGet = `Use "arkade get TOOL" to download a tool or application:
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- kubectl
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- faas-cli`
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