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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
85 lines
2.1 KiB
Go
85 lines
2.1 KiB
Go
// 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 publish
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import (
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"fmt"
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"log"
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"strings"
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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/daemon"
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)
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const (
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// LocalDomain is a sentinel "registry" that represents side-loading images into the daemon.
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LocalDomain = "ko.local"
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)
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// demon is intentionally misspelled to avoid name collision (and drive Jon nuts).
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type demon struct {
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namer Namer
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tags []string
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}
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// NewDaemon returns a new publish.Interface that publishes images to a container daemon.
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func NewDaemon(namer Namer, tags []string) Interface {
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return &demon{namer, tags}
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}
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// Publish implements publish.Interface
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func (d *demon) Publish(img v1.Image, s string) (name.Reference, error) {
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// https://github.com/google/go-containerregistry/issues/212
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s = strings.ToLower(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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digestTag, err := name.NewTag(fmt.Sprintf("%s/%s:%s", LocalDomain, d.namer(s), h.Hex))
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if err != nil {
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return nil, err
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}
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log.Printf("Loading %v", digestTag)
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if _, err := daemon.Write(digestTag, img); err != nil {
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return nil, err
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}
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log.Printf("Loaded %v", digestTag)
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for _, tagName := range d.tags {
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log.Printf("Adding tag %v", tagName)
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tag, err := name.NewTag(fmt.Sprintf("%s/%s:%s", LocalDomain, d.namer(s), tagName))
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if err != nil {
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return nil, err
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}
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err = daemon.Tag(digestTag, tag)
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if err != nil {
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return nil, err
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}
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log.Printf("Added tag %v", tagName)
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}
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return &digestTag, nil
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}
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func (d *demon) Close() error {
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return nil
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}
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