80 lines
2.2 KiB
Go
80 lines
2.2 KiB
Go
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/*
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Copyright 2014 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package rest
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import (
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"io"
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"net/http"
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"net/url"
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"strings"
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"k8s.io/apimachinery/pkg/runtime/schema"
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"k8s.io/kubernetes/pkg/genericapiserver/api/rest"
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)
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// LocationStreamer is a resource that streams the contents of a particular
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// location URL
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type LocationStreamer struct {
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Location *url.URL
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Transport http.RoundTripper
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ContentType string
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Flush bool
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ResponseChecker HttpResponseChecker
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}
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// a LocationStreamer must implement a rest.ResourceStreamer
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var _ rest.ResourceStreamer = &LocationStreamer{}
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func (obj *LocationStreamer) GetObjectKind() schema.ObjectKind {
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return schema.EmptyObjectKind
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}
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// InputStream returns a stream with the contents of the URL location. If no location is provided,
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// a null stream is returned.
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func (s *LocationStreamer) InputStream(apiVersion, acceptHeader string) (stream io.ReadCloser, flush bool, contentType string, err error) {
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if s.Location == nil {
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// If no location was provided, return a null stream
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return nil, false, "", nil
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}
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transport := s.Transport
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if transport == nil {
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transport = http.DefaultTransport
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}
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client := &http.Client{Transport: transport}
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resp, err := client.Get(s.Location.String())
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if err != nil {
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return nil, false, "", err
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}
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if s.ResponseChecker != nil {
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if err = s.ResponseChecker.Check(resp); err != nil {
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return nil, false, "", err
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}
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}
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contentType = s.ContentType
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if len(contentType) == 0 {
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contentType = resp.Header.Get("Content-Type")
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if len(contentType) > 0 {
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contentType = strings.TrimSpace(strings.SplitN(contentType, ";", 2)[0])
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}
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}
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flush = s.Flush
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stream = resp.Body
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return
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}
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