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package registry
import (
"fmt"
"strings"
"github.com/containers/podman/v4/utils"
"github.com/sirupsen/logrus"
)
const (
ImageKey = "PODMAN_REGISTRY_IMAGE"
UserKey = "PODMAN_REGISTRY_USER"
PassKey = "PODMAN_REGISTRY_PASS"
PortKey = "PODMAN_REGISTRY_PORT"
)
var binary = "podman-registry"
// Registry is locally running registry.
type Registry struct {
// Image - container image of the registry.
Image string
// User - the user to authenticate against the registry.
User string
// Password - the accompanying password for the user.
Password string
// Port - the port the registry is listening to on the host.
Port string
// running indicates if the registry is running.
running bool
}
// Options allows for customizing a registry.
type Options struct {
// Image - custom registry image.
Image string
}
// Start a new registry and return it along with it's image, user, password, and port.
func Start() (*Registry, error) {
return StartWithOptions(nil)
}
// StartWithOptions a new registry and return it along with it's image, user, password, and port.
func StartWithOptions(options *Options) (*Registry, error) {
if options == nil {
options = &Options{}
}
var args []string
if options.Image != "" {
args = append(args, "-i", options.Image)
}
args = append(args, "start")
// Start a registry.
out, err := utils.ExecCmd(binary, args...)
if err != nil {
return nil, fmt.Errorf("running %q: %s: %w", binary, out, err)
}
// Parse the output.
registry := Registry{}
for _, s := range strings.Split(out, "\n") {
if s == "" {
continue
}
spl := strings.Split(s, "=")
if len(spl) != 2 {
return nil, fmt.Errorf("unexpected output format %q: want 'PODMAN_...=...'", s)
}
key := spl[0]
val := strings.TrimSuffix(strings.TrimPrefix(spl[1], "\""), "\"")
switch key {
case ImageKey:
registry.Image = val
case UserKey:
registry.User = val
case PassKey:
registry.Password = val
case PortKey:
registry.Port = val
default:
logrus.Errorf("Unexpected podman-registry output: %q", s)
}
}
// Extra sanity check.
if registry.Image == "" {
return nil, fmt.Errorf("unexpected output %q: %q missing", out, ImageKey)
}
if registry.User == "" {
return nil, fmt.Errorf("unexpected output %q: %q missing", out, UserKey)
}
if registry.Password == "" {
return nil, fmt.Errorf("unexpected output %q: %q missing", out, PassKey)
}
if registry.Port == "" {
return nil, fmt.Errorf("unexpected output %q: %q missing", out, PortKey)
}
registry.running = true
return ®istry, nil
}
// Stop the registry.
func (r *Registry) Stop() error {
// Stop a registry.
if !r.running {
return nil
}
if _, err := utils.ExecCmd(binary, "-P", r.Port, "stop"); err != nil {
return fmt.Errorf("stopping registry (%v) with %q: %w", *r, binary, err)
}
r.running = false
return nil
}
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