f3ccd85891
This commit aims to add registy mirror support similar to docker. The UI is similar to docker where user can provide mirror urls and the image resolves against the provided mirrors before fetching from default docker regitry mirror url. Signed-off-by: abhi <abhi@docker.com>
89 lines
2.5 KiB
Go
89 lines
2.5 KiB
Go
/*
|
|
Copyright 2018 The Containerd 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 options
|
|
|
|
import (
|
|
"fmt"
|
|
"net/url"
|
|
"strings"
|
|
)
|
|
|
|
// Mirror contains the config related to the registry mirror
|
|
type Mirror struct {
|
|
Endpoints []string `toml:"endpoint" json:"endpoint,omitempty"`
|
|
// TODO (Abhi) We might need to add auth per namespace. Looks like
|
|
// image auth information is passed by kube itself.
|
|
}
|
|
|
|
// Registry is registry settings configured
|
|
type Registry struct {
|
|
Mirrors map[string]Mirror `toml:"mirrors" json:"mirrors,omitempty"`
|
|
}
|
|
|
|
// String returns the string format of registry type
|
|
func (r *Registry) String() string {
|
|
// Its not used hence return empty string
|
|
return ""
|
|
}
|
|
|
|
// Set validates and converts into the internal registry struct
|
|
func (r *Registry) Set(s string) error {
|
|
// --registry docker.io=https://mymirror.io,http://mymirror2.io
|
|
// If no option is set then return format error
|
|
if len(s) == 0 {
|
|
return fmt.Errorf("incomplete registry mirror option")
|
|
}
|
|
var mirrors []string
|
|
host := "docker.io"
|
|
opt := strings.Split(s, "=")
|
|
if len(opt) > 1 {
|
|
// If option is set in the format "mynamespace.io=https://mymirror.io,https://mymirror2.io"
|
|
// Then associate the mirror urls for the namespace only"
|
|
host = opt[0]
|
|
mirrors = strings.Split(opt[1], ",")
|
|
} else {
|
|
// If option is set in the format "https://mymirror.io,https://mymirror.io"
|
|
// Then associate mirror against default docker.io namespace
|
|
mirrors = strings.Split(opt[0], ",")
|
|
}
|
|
|
|
// Validate the format of the urls passed
|
|
for _, u := range mirrors {
|
|
_, err := url.Parse(u)
|
|
if err != nil {
|
|
return fmt.Errorf("invalid registry mirror url format %v: %v", u, err)
|
|
}
|
|
}
|
|
|
|
if r.Mirrors == nil {
|
|
r.Mirrors = make(map[string]Mirror)
|
|
}
|
|
if _, ok := r.Mirrors[host]; !ok {
|
|
r.Mirrors[host] = Mirror{}
|
|
}
|
|
m := r.Mirrors[host]
|
|
m.Endpoints = append(m.Endpoints, mirrors...)
|
|
r.Mirrors[host] = m
|
|
|
|
return nil
|
|
}
|
|
|
|
// Type returns a string name for the option type
|
|
func (r *Registry) Type() string {
|
|
return "list"
|
|
}
|