95 lines
2.6 KiB
Go
95 lines
2.6 KiB
Go
// Copyright 2022 The KubeSphere Authors.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package v2
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import (
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"context"
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"net/http"
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"github.com/google/go-containerregistry/pkg/authn"
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"github.com/google/go-containerregistry/pkg/name"
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v1 "github.com/google/go-containerregistry/pkg/v1"
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"github.com/google/go-containerregistry/pkg/v1/remote"
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)
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const (
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// DefaultRegistry is the registry name that will be used if no registry
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// provided and the default is not overridden.
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DefaultRegistry = "index.docker.io"
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// DefaultTag is the tag name that will be used if no tag provided and the
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// default is not overridden.
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DefaultTag = "latest"
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)
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type options struct {
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name []name.Option
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remote []remote.Option
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platform *v1.Platform
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}
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func makeOptions(opts ...Option) options {
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opt := options{
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remote: []remote.Option{
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remote.WithAuth(authn.Anonymous),
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},
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}
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for _, o := range opts {
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o(&opt)
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}
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return opt
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}
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// Option is a functional option
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type Option func(*options)
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// WithTransport is a functional option for overriding the default transport
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// for remote operations.
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func WithTransport(t http.RoundTripper) Option {
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return func(o *options) {
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o.remote = append(o.remote, remote.WithTransport(t))
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}
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}
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// Insecure is an Option that allows image references to be fetched without TLS.
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func Insecure(o *options) {
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o.name = append(o.name, name.Insecure)
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}
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// WithAuth is a functional option for overriding the default authenticator
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// for remote operations.
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func WithAuth(auth authn.Authenticator) Option {
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return func(o *options) {
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// Replace the default keychain at position 0.
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o.remote[0] = remote.WithAuth(auth)
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}
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}
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// WithContext is a functional option for setting the context.
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func WithContext(ctx context.Context) Option {
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return func(o *options) {
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o.remote = append(o.remote, remote.WithContext(ctx))
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}
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}
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// WithPlatform is an Option to specify the platform.
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func WithPlatform(platform *v1.Platform) Option {
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return func(o *options) {
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if platform != nil {
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o.remote = append(o.remote, remote.WithPlatform(*platform))
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}
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o.platform = platform
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}
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}
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