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ko-build/pkg/publish/daemon.go
2019-03-14 14:23:47 -04:00

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