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// Copyright 2023 CUE Labs AG
//
// 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 (
"fmt"
"reflect"
"regexp"
"strings"
"cuelabs.dev/go/oci/ociregistry"
"cuelabs.dev/go/oci/ociregistry/ociclient"
"cuelabs.dev/go/oci/ociregistry/ocidebug"
"cuelabs.dev/go/oci/ociregistry/ocifilter"
"cuelabs.dev/go/oci/ociregistry/ocimem"
"cuelabs.dev/go/oci/ociregistry/ociunify"
)
var kindToRegistryType = make(map[string]reflect.Type)
func init() {
for _, r := range []registry{
clientRegistry{},
selectRegistry{},
readOnlyRegistry{},
immutableRegistry{},
unifyRegistry{},
memRegistry{},
debugRegistry{},
} {
t := reflect.TypeOf(r)
name, ok := strings.CutSuffix(t.Name(), "Registry")
if !ok {
panic(fmt.Errorf("type %v has malformed name", name))
}
kindToRegistryType[name] = t
}
}
type registry interface {
new() (ociregistry.Interface, error)
}
type clientRegistry struct {
Host string `json:"host"`
Insecure bool `json:"insecure"`
DebugID string `json:"debugID,omitempty"`
}
func (r clientRegistry) new() (ociregistry.Interface, error) {
return ociclient.New(r.Host, &ociclient.Options{
DebugID: r.DebugID,
Insecure: r.Insecure,
})
}
type selectRegistry struct {
Registry registry `json:"registry"`
Include *regexp.Regexp `json:"include,omitempty"`
Exclude *regexp.Regexp `json:"exclude,omitempty"`
}
func (r selectRegistry) new() (ociregistry.Interface, error) {
r1, err := r.Registry.new()
if err != nil {
return nil, err
}
return ocifilter.Select(r1, func(repo string) bool {
if !r.Include.MatchString(repo) {
return false
}
if r.Exclude.MatchString(repo) {
return false
}
return true
}), nil
}
type readOnlyRegistry struct {
Registry registry `json:"registry"`
}
func (r readOnlyRegistry) new() (ociregistry.Interface, error) {
r1, err := r.Registry.new()
if err != nil {
return nil, err
}
return ocifilter.ReadOnly(r1), nil
}
type immutableRegistry struct {
Registry registry `json:"registry"`
}
func (r immutableRegistry) new() (ociregistry.Interface, error) {
r1, err := r.Registry.new()
if err != nil {
return nil, err
}
return ocifilter.Immutable(r1), nil
}
type unifyRegistry struct {
Registries []registry `json:"registries"`
// TODO options
}
func (r unifyRegistry) new() (ociregistry.Interface, error) {
if len(r.Registries) != 2 {
return nil, fmt.Errorf("can currently unify exactly two registries only")
}
r1 := make([]ociregistry.Interface, len(r.Registries))
for i := range r.Registries {
ri, err := r.Registries[i].new()
if err != nil {
return nil, err
}
r1[i] = ri
}
return ociunify.New(r1[0], r1[1], nil), nil
}
type memRegistry struct{}
func (r memRegistry) new() (ociregistry.Interface, error) {
return ocimem.New(), nil
}
type debugRegistry struct {
Registry registry `json:"registry"`
}
func (r debugRegistry) new() (ociregistry.Interface, error) {
r1, err := r.Registry.new()
if err != nil {
return nil, err
}
return ocidebug.New(r1, nil), nil
}
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