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out-of-tree/cache/cache.go

121 lines
2.4 KiB
Go

// Copyright 2023 Mikhail Klementev. All rights reserved.
// Use of this source code is governed by a AGPLv3 license
// (or later) that can be found in the LICENSE file.
package cache
import (
"fmt"
"net/http"
"net/url"
"os"
"os/exec"
"path/filepath"
"github.com/cavaliergopher/grab/v3"
"github.com/rs/zerolog/log"
"code.dumpstack.io/tools/out-of-tree/config"
"code.dumpstack.io/tools/out-of-tree/fs"
)
var URL = "https://out-of-tree.fra1.digitaloceanspaces.com/1.0.0/"
func unpackTar(archive, destination string) (err error) {
// NOTE: If you're change anything in tar command please check also
// BSD tar (or if you're using macOS, do not forget to check GNU Tar)
// Also make sure that sparse files are extracting correctly
cmd := exec.Command("tar", "-Sxf", archive)
cmd.Dir = destination + "/"
log.Debug().Msgf("%v", cmd)
rawOutput, err := cmd.CombinedOutput()
if err != nil {
err = fmt.Errorf("%v: %s", err, rawOutput)
return
}
return
}
func DownloadQemuImage(path, file string) (err error) {
tmp, err := fs.TempDir()
if err != nil {
return
}
defer os.RemoveAll(tmp)
fileurl, err := url.JoinPath(URL, file+".tar.gz")
if err != nil {
return
}
log.Debug().Msgf("download qemu image from %s", fileurl)
resp, err := grab.Get(tmp, fileurl)
if err != nil {
err = fmt.Errorf("Cannot download %s. It looks like you need "+
"to generate it manually and place it "+
"to ~/.out-of-tree/images/. "+
"Check documentation for additional information.",
fileurl)
return
}
err = unpackTar(resp.Filename, path)
if err != nil {
return
}
return os.Remove(resp.Filename)
}
func DownloadDebianCache(cachePath string) (err error) {
tmp, err := fs.TempDir()
if err != nil {
return
}
defer os.RemoveAll(tmp)
file := filepath.Base(cachePath)
fileurl, err := url.JoinPath(URL, file)
if err != nil {
return
}
log.Debug().Msgf("download debian cache from %s", fileurl)
resp, err := grab.Get(tmp, fileurl)
if err != nil {
return
}
return os.Rename(resp.Filename, cachePath)
}
func PackageURL(dt config.DistroType, orig string) (found bool, fileurl string) {
if dt != config.Debian {
return
}
filename := filepath.Base(orig)
fileurl, err := url.JoinPath(URL, "packages/debian", filename)
if err != nil {
return
}
resp, err := http.Head(fileurl)
if err != nil {
return
}
if resp.StatusCode != http.StatusOK {
return
}
found = true
return
}