Files
ko-build/pkg/internal/testing/fixed.go
T
jonjohnsonjr 3c6a907da9 Add additional output formats (tarball and layout) (#134)
* 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
2020-02-19 09:30:01 -08:00

86 lines
2.4 KiB
Go

// Copyright 2018 Google LLC All Rights Reserved.
//
// 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 testing
import (
"context"
"fmt"
"github.com/google/go-containerregistry/pkg/name"
v1 "github.com/google/go-containerregistry/pkg/v1"
"github.com/google/ko/pkg/build"
"github.com/google/ko/pkg/publish"
)
type fixedBuild struct {
entries map[string]v1.Image
}
// NewFixedBuild returns a build.Interface implementation that simply resolves
// particular references to fixed v1.Image objects
func NewFixedBuild(entries map[string]v1.Image) build.Interface {
return &fixedBuild{entries}
}
// IsSupportedReference implements build.Interface
func (f *fixedBuild) IsSupportedReference(s string) bool {
_, ok := f.entries[s]
return ok
}
// Build implements build.Interface
func (f *fixedBuild) Build(_ context.Context, s string) (v1.Image, error) {
if img, ok := f.entries[s]; ok {
return img, nil
}
return nil, fmt.Errorf("unsupported reference: %q", s)
}
type fixedPublish struct {
base name.Repository
entries map[string]v1.Hash
}
// NewFixedPublish returns a publish.Interface implementation that simply
// resolves particular references to fixed name.Digest references.
func NewFixedPublish(base name.Repository, entries map[string]v1.Hash) publish.Interface {
return &fixedPublish{base, entries}
}
// Publish implements publish.Interface
func (f *fixedPublish) Publish(_ v1.Image, s string) (name.Reference, error) {
h, ok := f.entries[s]
if !ok {
return nil, fmt.Errorf("unsupported importpath: %q", s)
}
d, err := name.NewDigest(fmt.Sprintf("%s/%s@%s", f.base, s, h))
if err != nil {
return nil, err
}
return &d, nil
}
func (f *fixedPublish) Close() error {
return nil
}
func ComputeDigest(base name.Repository, ref string, h v1.Hash) string {
d, err := name.NewDigest(fmt.Sprintf("%s/%s@%s", base, ref, h))
if err != nil {
panic(err)
}
return d.String()
}