79 lines
2.2 KiB
Go
79 lines
2.2 KiB
Go
/*
|
|
Copyright 2014 The Kubernetes 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 rest
|
|
|
|
import (
|
|
"io"
|
|
"net/http"
|
|
"net/url"
|
|
"strings"
|
|
|
|
"k8s.io/apimachinery/pkg/runtime/schema"
|
|
"k8s.io/kubernetes/pkg/genericapiserver/api/rest"
|
|
)
|
|
|
|
// LocationStreamer is a resource that streams the contents of a particular
|
|
// location URL
|
|
type LocationStreamer struct {
|
|
Location *url.URL
|
|
Transport http.RoundTripper
|
|
ContentType string
|
|
Flush bool
|
|
ResponseChecker HttpResponseChecker
|
|
}
|
|
|
|
// a LocationStreamer must implement a rest.ResourceStreamer
|
|
var _ rest.ResourceStreamer = &LocationStreamer{}
|
|
|
|
func (obj *LocationStreamer) GetObjectKind() schema.ObjectKind {
|
|
return schema.EmptyObjectKind
|
|
}
|
|
|
|
// InputStream returns a stream with the contents of the URL location. If no location is provided,
|
|
// a null stream is returned.
|
|
func (s *LocationStreamer) InputStream(apiVersion, acceptHeader string) (stream io.ReadCloser, flush bool, contentType string, err error) {
|
|
if s.Location == nil {
|
|
// If no location was provided, return a null stream
|
|
return nil, false, "", nil
|
|
}
|
|
transport := s.Transport
|
|
if transport == nil {
|
|
transport = http.DefaultTransport
|
|
}
|
|
client := &http.Client{Transport: transport}
|
|
resp, err := client.Get(s.Location.String())
|
|
if err != nil {
|
|
return nil, false, "", err
|
|
}
|
|
|
|
if s.ResponseChecker != nil {
|
|
if err = s.ResponseChecker.Check(resp); err != nil {
|
|
return nil, false, "", err
|
|
}
|
|
}
|
|
|
|
contentType = s.ContentType
|
|
if len(contentType) == 0 {
|
|
contentType = resp.Header.Get("Content-Type")
|
|
if len(contentType) > 0 {
|
|
contentType = strings.TrimSpace(strings.SplitN(contentType, ";", 2)[0])
|
|
}
|
|
}
|
|
flush = s.Flush
|
|
stream = resp.Body
|
|
return
|
|
}
|