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install_command.go
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/
install_command.go
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package commands
import (
"archive/zip"
"bytes"
"errors"
"github.com/grafana/grafana-cli/pkg/log"
m "github.com/grafana/grafana-cli/pkg/models"
services "github.com/grafana/grafana-cli/pkg/services"
"io"
"io/ioutil"
"net/http"
"os"
"path"
"regexp"
)
func validateInput(c CommandLine, pluginFolder string) error {
arg := c.Args().First()
if arg == "" {
return errors.New("please specify plugin to install")
}
pluginDir := c.GlobalString("path")
if pluginDir == "" {
return errors.New("missing path flag")
}
fileinfo, err := os.Stat(pluginDir)
if err != nil && !fileinfo.IsDir() {
return errors.New("path is not a directory")
}
return nil
}
func installCommand(c CommandLine) error {
pluginFolder := c.GlobalString("path")
if err := validateInput(c, pluginFolder); err != nil {
return err
}
pluginToInstall := c.Args().First()
version := c.Args().Get(1)
log.Infof("version: %v\n", version)
return InstallPlugin(pluginToInstall, pluginFolder, version)
}
func InstallPlugin(pluginName, pluginFolder, version string) error {
plugin, err := services.GetPlugin(pluginName)
if err != nil {
return err
}
v, err := SelectVersion(plugin, version)
if err != nil {
return err
}
url := v.Url
commit := v.Commit
downloadURL := url + "/archive/" + commit + ".zip"
log.Infof("installing %v @ %v\n", plugin.Id, version)
log.Infof("from url: %v\n", downloadURL)
log.Infof("on commit: %v\n", commit)
log.Infof("into: %v\n", pluginFolder)
err = downloadFile(plugin.Id, pluginFolder, downloadURL)
if err == nil {
log.Info("Installed %s successfully ✔\n", plugin.Id)
}
res := services.ReadPlugin(pluginFolder, pluginName)
for _, v := range res.Dependency.Plugins {
log.Infof("Depends on %s install!\n", v.Id)
//Todo: uncomment this code once the repo is more correct.
//InstallPlugin(v.Id, pluginFolder, "")
}
return err
}
func SelectVersion(plugin m.Plugin, version string) (m.Version, error) {
if version == "" {
return plugin.Versions[0], nil
}
for _, v := range plugin.Versions {
if v.Version == version {
return v, nil
}
}
return m.Version{}, errors.New("Could not find the version your looking for")
}
func RemoveGitBuildFromname(pluginname, filename string) string {
r := regexp.MustCompile("^[a-zA-Z0-9_.-]*/")
return r.ReplaceAllString(filename, pluginname+"/")
}
func downloadFile(pluginName, filepath, url string) (err error) {
resp, err := http.Get(url)
if err != nil {
return err
}
defer resp.Body.Close()
body, err := ioutil.ReadAll(resp.Body)
if err != nil {
return err
}
r, err := zip.NewReader(bytes.NewReader(body), resp.ContentLength)
if err != nil {
return err
}
for _, zf := range r.File {
newfile := path.Join(filepath, RemoveGitBuildFromname(pluginName, zf.Name))
if zf.FileInfo().IsDir() {
os.Mkdir(newfile, 0777)
} else {
dst, err := os.Create(newfile)
if err != nil {
log.Errorf("%v", err)
}
defer dst.Close()
src, err := zf.Open()
if err != nil {
log.Errorf("%v", err)
}
defer src.Close()
io.Copy(dst, src)
}
}
return nil
}