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3c6a907da9
* Create a MultiPublisher
MultiPublisher mimics io.MultiWriter in that it will publish an image to
multiple publish.Interface implementations.
* Add publish.{Tarball,Layout}Publisher
This adds support for publishing in the tarball format and to an OCI
image layout.
The tarball format isn't great, yet. It only supports writing once
instead of appending.
* Consolidate options
These were spread all over the place for no reasons. Now all the
publisher related options are grouped together.
* Add options for tarball/layout
Adds --oci-layout-path, --tarball, and --push flags.
--push=false will disable the default behavior of publishing to a
registry.
* go mod vendor
* Add Close method to publish.Interface
This allows us to defer writing to the tarball until we've collected all
the images that have been published.
* Fix tests
67 lines
1.7 KiB
Go
67 lines
1.7 KiB
Go
// Copyright 2020 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 publish
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import (
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"fmt"
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"log"
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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/empty"
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"github.com/google/go-containerregistry/pkg/v1/layout"
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)
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type LayoutPublisher struct {
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p layout.Path
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}
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// NewLayout returns a new publish.Interface that saves images to an OCI Image Layout.
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func NewLayout(path string) (Interface, error) {
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p, err := layout.FromPath(path)
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if err != nil {
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p, err = layout.Write(path, empty.Index)
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if err != nil {
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return nil, err
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}
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}
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return &LayoutPublisher{p}, nil
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}
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// Publish implements publish.Interface.
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func (l *LayoutPublisher) Publish(img v1.Image, s string) (name.Reference, error) {
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log.Printf("Saving %v", s)
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if err := l.p.AppendImage(img); err != nil {
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return nil, err
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}
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log.Printf("Saved %v", s)
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h, err := img.Digest()
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if err != nil {
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return nil, err
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}
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dig, err := name.NewDigest(fmt.Sprintf("%s@%s", l.p, h))
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if err != nil {
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return nil, err
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}
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return dig, nil
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}
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func (l *LayoutPublisher) Close() error {
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return nil
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}
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