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// Copyright 2017 Google Inc.
//
// 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 main
import (
"encoding/json"
"flag"
"fmt"
"io/ioutil"
"net/http"
"os"
"sort"
"strings"
"time"
)
var (
user = flag.String("user", "", "username")
repo = flag.String("repo", "", "repository name")
pkgType = flag.String("pkg-type", "deb", "Package type, e.g. 'deb'")
distro = flag.String("distro", "", "distro name, e.g. 'debian'")
distroVersion = flag.String("version", "", "distro version, e.g. 'stretch'")
pkg = flag.String("package", "", "package name")
arch = flag.String("arch", "", "package architecture")
limit = flag.Int("limit", 2, "package versions to keep")
)
func fatalf(msg string, args ...interface{}) {
fmt.Printf(msg+"\n", args...)
os.Exit(1)
}
func main() {
flag.Parse()
if *user == "" {
fatalf("missing -user")
}
if *repo == "" {
fatalf("missing -repo")
}
if *pkgType == "" {
fatalf("missing -pkg-type")
}
if *distro == "" {
fatalf("missing -distro")
}
if *distroVersion == "" {
fatalf("missing -version")
}
if *pkg == "" {
fatalf("missing -package")
}
if *arch == "" {
fatalf("missing -arch")
}
if *limit < 1 {
fatalf("limit must be >= 1")
}
files, err := packageVersions(*user, *repo, *pkgType, *distro, *distroVersion, *pkg, *arch)
if err != nil {
fmt.Println(err)
os.Exit(1)
}
if len(files) <= *limit {
fmt.Println("Below limit, no packages deleted")
return
}
delete := files[:len(files)-*limit]
keep := files[len(files)-*limit:]
if err = deletePackages(delete); err != nil {
fmt.Println(err)
os.Exit(1)
}
fmt.Printf("Deleted:\n\n%s\n\nKept:\n\n%s\n", strings.Join(delete, "\n"), strings.Join(keep, "\n"))
}
type packageMeta struct {
Created time.Time `json:"created_at"`
Filename string `json:"filename"`
}
type metaSort []packageMeta
func (m metaSort) Len() int { return len(m) }
func (m metaSort) Less(i, j int) bool { return m[i].Created.Before(m[j].Created) }
func (m metaSort) Swap(i, j int) { m[i], m[j] = m[j], m[i] }
func packageVersions(user, repo, typ, distro, version, pkgname, arch string) ([]string, error) {
url := fmt.Sprintf("https://%s:@packagecloud.io/api/v1/repos/%s/%s/package/%s/%s/%s/%s/%s/versions.json", os.Getenv("PACKAGECLOUD_API_KEY"), user, repo, typ, distro, version, pkgname, arch)
resp, err := http.Get(url)
if err != nil {
return nil, fmt.Errorf("get versions.json: %s", err)
}
defer resp.Body.Close()
if resp.StatusCode != 200 {
msg, err := ioutil.ReadAll(resp.Body)
if err != nil {
return nil, fmt.Errorf("get error message of versions.json get: %s", err)
}
return nil, fmt.Errorf("get versions.json: %s (%q)", resp.Status, string(msg))
}
var files []packageMeta
if err := json.NewDecoder(resp.Body).Decode(&files); err != nil {
return nil, fmt.Errorf("decode versions.json: %s", err)
}
// Newest first
sort.Sort(metaSort(files))
var ret []string
for _, meta := range files {
ret = append(ret, fmt.Sprintf("/api/v1/repos/%s/%s/%s/%s/%s", user, repo, distro, version, meta.Filename))
}
return ret, nil
}
func deletePackages(urls []string) error {
for _, url := range urls {
fullURL := fmt.Sprintf("https://%s:@packagecloud.io%s", os.Getenv("PACKAGECLOUD_API_KEY"), url)
req, err := http.NewRequest("DELETE", fullURL, nil)
if err != nil {
return fmt.Errorf("build delete request for %s: %s", url, err)
}
resp, err := http.DefaultClient.Do(req)
if err != nil {
return fmt.Errorf("delete %s: %s", url, err)
}
defer resp.Body.Close()
if resp.StatusCode != 200 {
return fmt.Errorf("delete %s: %s", url, resp.Status)
}
}
return nil
}
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