/
client.go
97 lines (85 loc) · 2.11 KB
/
client.go
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// Copyright 2021 The image-cloner Authors.
//
// 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 docker
import (
"context"
"encoding/json"
"errors"
"io"
"strings"
"github.com/docker/docker/api/types"
"github.com/docker/docker/pkg/jsonmessage"
"k8s.io/klog/v2"
)
func (d *docker) ImagePull(ctx context.Context, image string) error {
res, err := d.client.ImagePull(context.Background(), image, types.ImagePullOptions{})
if res != nil {
defer res.Close()
}
if err != nil {
return err
}
if err = d.watch(res); err != nil {
return err
}
return nil
}
func (d *docker) ImagePush(ctx context.Context, image string) error {
res, err := d.client.ImagePush(context.Background(), image,
types.ImagePushOptions{
RegistryAuth: d.registryAuth,
})
if res != nil {
defer res.Close()
}
if err != nil {
return err
}
if err = d.watch(res); err != nil {
return err
}
return nil
}
func (d *docker) ImageTag(ctx context.Context, src, dst string) error {
err := d.client.ImageTag(context.Background(), src, dst)
if err != nil {
return err
}
klog.Infof("[info]: '%s' successfully tagged as '%s'\n", src, dst)
return nil
}
func (d *docker) watch(in io.Reader) error {
dec := json.NewDecoder(in)
status := ""
for {
var jm jsonmessage.JSONMessage
if err := dec.Decode(&jm); err != nil {
if err == io.EOF {
break
}
return err
}
if jm.Error != nil {
return jm.Error
}
if len(jm.ErrorMessage) > 0 {
return errors.New(jm.ErrorMessage)
}
if jm.Status != "" && !strings.EqualFold(status, jm.Status) {
klog.Infof("[info]: %v\n", jm.Status)
status = jm.Status
}
}
return nil
}