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61 lines
1.9 KiB
61 lines
1.9 KiB
// Copyright 2018 Google LLC All Rights Reserved.
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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 crane
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import (
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"fmt"
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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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func getImage(r string, opt ...Option) (v1.Image, name.Reference, error) {
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o := makeOptions(opt...)
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ref, err := name.ParseReference(r, o.Name...)
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if err != nil {
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return nil, nil, fmt.Errorf("parsing reference %q: %w", r, err)
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}
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img, err := remote.Image(ref, o.Remote...)
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if err != nil {
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return nil, nil, fmt.Errorf("reading image %q: %w", ref, err)
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}
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return img, ref, nil
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}
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func getManifest(r string, opt ...Option) (*remote.Descriptor, error) {
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o := makeOptions(opt...)
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ref, err := name.ParseReference(r, o.Name...)
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if err != nil {
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return nil, fmt.Errorf("parsing reference %q: %w", r, err)
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}
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return remote.Get(ref, o.Remote...)
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}
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// Get calls remote.Get and returns an uninterpreted response.
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func Get(r string, opt ...Option) (*remote.Descriptor, error) {
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return getManifest(r, opt...)
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}
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// Head performs a HEAD request for a manifest and returns a content descriptor
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// based on the registry's response.
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func Head(r string, opt ...Option) (*v1.Descriptor, error) {
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o := makeOptions(opt...)
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ref, err := name.ParseReference(r, o.Name...)
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if err != nil {
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return nil, err
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}
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return remote.Head(ref, o.Remote...)
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}
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