docker-register-manager/cmd/rm.go

102 lines
2.5 KiB
Go

package cmd
import (
"encoding/base64"
"encoding/json"
"fmt"
"gitea.stuzer.link/stuzer05/docker-registry-manager/internal/app"
"net/http"
"strings"
)
func RegistryRm(app *app.App, imageArg string) {
parts := strings.SplitN(imageArg, ":", 2)
imageName := parts[0]
tag := ""
if len(parts) > 1 {
tag = parts[1]
}
if tag == "" {
deleteImageByName(app, imageName)
} else {
deleteImageByTag(app, imageName, tag)
}
}
func deleteImageByName(app *app.App, imageName string) {
type tagList struct {
Tags []string `json:"tags"`
}
resp, err := http.Get(fmt.Sprintf("%s/v2/%s/tags/list", app.RegistryURL, imageName))
if err != nil {
fmt.Println("Error fetching tags:", err)
return
}
defer resp.Body.Close()
if resp.StatusCode == http.StatusNotFound {
fmt.Printf("Error: Image '%s' not found in the registry.\n", imageName)
return
}
var tl tagList
if err := json.NewDecoder(resp.Body).Decode(&tl); err != nil {
fmt.Println("Error decoding response:", err)
return
}
for _, tag := range tl.Tags {
deleteImageByTag(app, imageName, tag)
}
}
func deleteImageByTag(app *app.App, imageName, tag string) {
client := &http.Client{}
req, err := http.NewRequest("HEAD", fmt.Sprintf("%s/v2/%s/manifests/%s", app.RegistryURL, imageName, tag), nil)
if err != nil {
fmt.Println("Error creating request:", err)
return
}
req.Header.Set("Accept", "application/vnd.docker.distribution.manifest.v2+json")
resp, err := client.Do(req)
if err != nil {
fmt.Println("Error fetching manifest:", err)
return
}
defer resp.Body.Close()
if resp.StatusCode == http.StatusNotFound {
fmt.Printf("Error: Image '%s:%s' not found in the registry.\n", imageName, tag)
return
}
digest := resp.Header.Get("Docker-Content-Digest")
req, err = http.NewRequest("DELETE", fmt.Sprintf("%s/v2/%s/manifests/%s", app.RegistryURL, imageName, digest), nil)
if err != nil {
fmt.Println("Error creating delete request:", err)
return
}
// Join username and password for Basic Auth
registryCredentials := app.RegistryUsername + ":" + app.RegistryPassword
req.Header.Set("Authorization", "Basic "+base64.StdEncoding.EncodeToString([]byte(registryCredentials)))
resp, err = client.Do(req)
if err != nil {
fmt.Println("Error deleting image:", err)
return
}
defer resp.Body.Close()
if resp.StatusCode == http.StatusAccepted {
fmt.Printf("Deleted image: %s:%s\n", imageName, tag)
} else {
fmt.Printf("Failed to delete image: %s:%s (status code: %d)\n", imageName, tag, resp.StatusCode)
}
}