forked from goodrain/rainbond
/
registry.go
145 lines (126 loc) · 3.98 KB
/
registry.go
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// RAINBOND, Application Management Platform
// Copyright (C) 2014-2017 Goodrain Co., Ltd.
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version. For any non-GPL usage of Rainbond,
// one or multiple Commercial Licenses authorized by Goodrain Co., Ltd.
// must be obtained first.
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
package registry
import (
"crypto/tls"
"fmt"
"net/http"
"strings"
"github.com/Sirupsen/logrus"
)
//LogfCallback LogfCallback
type LogfCallback func(format string, args ...interface{})
//Quiet Quiet
/*
* Discard log messages silently.
*/
func Quiet(format string, args ...interface{}) {
/* discard logs */
}
//Log print log
/*
* Pass log messages along to Go's "log" module.
*/
func Log(format string, args ...interface{}) {
logrus.Debugf(format, args...)
}
//Registry the client for image repostory
type Registry struct {
URL string
Client *http.Client
Logf LogfCallback
}
//New new ssl registry client
/*
* Create a new Registry with the given URL and credentials, then Ping()s it
* before returning it to verify that the registry is available.
*
* You can, alternately, construct a Registry manually by populating the fields.
* This passes http.DefaultTransport to WrapTransport when creating the
* http.Client.
*/
func New(registryURL, username, password string) (*Registry, error) {
transport := http.DefaultTransport
return newFromTransport(registryURL, username, password, transport, Log)
}
//NewInsecure new insecure skip verify tls client
/*
* Create a new Registry, as with New, using an http.Transport that disables
* SSL certificate verification.
*/
func NewInsecure(registryURL, username, password string) (*Registry, error) {
transport := &http.Transport{
TLSClientConfig: &tls.Config{
InsecureSkipVerify: true,
},
}
return newFromTransport(registryURL, username, password, transport, Log)
}
/*
* Given an existing http.RoundTripper such as http.DefaultTransport, build the
* transport stack necessary to authenticate to the Docker registry API. This
* adds in support for OAuth bearer tokens and HTTP Basic auth, and sets up
* error handling this library relies on.
*/
func WrapTransport(transport http.RoundTripper, url, username, password string) http.RoundTripper {
tokenTransport := &TokenTransport{
Transport: transport,
Username: username,
Password: password,
}
basicAuthTransport := &BasicTransport{
Transport: tokenTransport,
URL: url,
Username: username,
Password: password,
}
errorTransport := &ErrorTransport{
Transport: basicAuthTransport,
}
return errorTransport
}
func newFromTransport(registryURL, username, password string, transport http.RoundTripper, logf LogfCallback) (*Registry, error) {
url := strings.TrimSuffix(registryURL, "/")
if !strings.HasPrefix(url, "https") {
url = fmt.Sprintf("https://%s", registryURL)
}
transport = WrapTransport(transport, url, username, password)
registry := &Registry{
URL: url,
Client: &http.Client{
Transport: transport,
},
Logf: logf,
}
if err := registry.Ping(); err != nil {
return nil, err
}
return registry, nil
}
func (r *Registry) url(pathTemplate string, args ...interface{}) string {
pathSuffix := fmt.Sprintf(pathTemplate, args...)
url := fmt.Sprintf("%s%s", r.URL, pathSuffix)
return url
}
//Ping ping regsstry server
func (r *Registry) Ping() error {
url := r.url("/v2/")
r.Logf("registry.ping url=%s", url)
resp, err := r.Client.Get(url)
if resp != nil {
defer resp.Body.Close()
}
return err
}