Files
kubernetes/pkg/kubelet/config/http.go
Kris f4e2c738f6 Delete deprecated API versions
pkg/service:

There were a couple of references here just as a reminder to change the
behavior of findPort. As of v1beta3, TargetPort was always defaulted, so
we could remove findDefaultPort and related tests.

pkg/apiserver:

The tests were using versioned API codecs for some of their encoding
tests. Necessary API types had to be written and registered with the
fake versioned codecs.

pkg/kubectl:

Some tests were converted to current versions where it made sense.
2015-05-29 17:17:35 -07:00

116 lines
3.0 KiB
Go

/*
Copyright 2014 The Kubernetes Authors All rights reserved.
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.
*/
// Reads the pod configuration from an HTTP GET response.
package config
import (
"bytes"
"fmt"
"io/ioutil"
"net/http"
"time"
"github.com/GoogleCloudPlatform/kubernetes/pkg/api"
"github.com/GoogleCloudPlatform/kubernetes/pkg/kubelet"
"github.com/GoogleCloudPlatform/kubernetes/pkg/util"
"github.com/golang/glog"
)
type sourceURL struct {
url string
hostname string
updates chan<- interface{}
data []byte
}
func NewSourceURL(url, hostname string, period time.Duration, updates chan<- interface{}) {
config := &sourceURL{
url: url,
hostname: hostname,
updates: updates,
data: nil,
}
glog.V(1).Infof("Watching URL %s", url)
go util.Forever(config.run, period)
}
func (s *sourceURL) run() {
if err := s.extractFromURL(); err != nil {
glog.Errorf("Failed to read URL: %v", err)
}
}
func (s *sourceURL) applyDefaults(pod *api.Pod) error {
return applyDefaults(pod, s.url, false, s.hostname)
}
func (s *sourceURL) extractFromURL() error {
resp, err := http.Get(s.url)
if err != nil {
return err
}
defer resp.Body.Close()
data, err := ioutil.ReadAll(resp.Body)
if err != nil {
return err
}
if resp.StatusCode != 200 {
return fmt.Errorf("%v: %v", s.url, resp.Status)
}
if len(data) == 0 {
// Emit an update with an empty PodList to allow HTTPSource to be marked as seen
s.updates <- kubelet.PodUpdate{[]*api.Pod{}, kubelet.SET, kubelet.HTTPSource}
return fmt.Errorf("zero-length data received from %v", s.url)
}
// Short circuit if the data has not changed since the last time it was read.
if bytes.Compare(data, s.data) == 0 {
return nil
}
s.data = data
// First try as it is a single pod.
parsed, pod, singlePodErr := tryDecodeSinglePod(data, s.applyDefaults)
if parsed {
if singlePodErr != nil {
// It parsed but could not be used.
return singlePodErr
}
s.updates <- kubelet.PodUpdate{[]*api.Pod{pod}, kubelet.SET, kubelet.HTTPSource}
return nil
}
// That didn't work, so try a list of pods.
parsed, podList, multiPodErr := tryDecodePodList(data, s.applyDefaults)
if parsed {
if multiPodErr != nil {
// It parsed but could not be used.
return multiPodErr
}
pods := make([]*api.Pod, 0)
for i := range podList.Items {
pods = append(pods, &podList.Items[i])
}
s.updates <- kubelet.PodUpdate{pods, kubelet.SET, kubelet.HTTPSource}
return nil
}
return fmt.Errorf("%v: received '%v', but couldn't parse as "+
"single (%v) or multiple pods (%v).\n",
s.url, string(data), singlePodErr, multiPodErr)
}