kubernetes/pkg/kubecfg/proxy_server.go
Clayton Coleman 818f357128 Client should validate the incoming host value
Convert host:port and URLs passed to client.New() into the proper
values, and return an error if the value is invalid.  Change CLI
to return an error if -master is invalid.  Remove Client.rawRequest
which was not in use, and fix the involved tests. Add NewOrDie

Preserves the behavior of the client to not auth when a non-https
URL is passed (although in the future this should be corrected).
2014-08-28 13:47:36 -04:00

77 lines
2.2 KiB
Go

/*
Copyright 2014 Google Inc. 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.
*/
package kubecfg
import (
"fmt"
"net/http"
"github.com/GoogleCloudPlatform/kubernetes/pkg/api"
"github.com/GoogleCloudPlatform/kubernetes/pkg/client"
)
// ProxyServer is a http.Handler which proxies Kubernetes APIs to remote API server.
type ProxyServer struct {
Client *client.Client
}
func newFileHandler(prefix, base string) http.Handler {
return http.StripPrefix(prefix, http.FileServer(http.Dir(base)))
}
// NewProxyServer creates and installs a new ProxyServer.
// It automatically registers the created ProxyServer to http.DefaultServeMux.
func NewProxyServer(filebase string, kubeClient *client.Client) *ProxyServer {
server := &ProxyServer{
Client: kubeClient,
}
http.Handle("/api/", server)
http.Handle("/static/", newFileHandler("/static/", filebase))
return server
}
// Serve starts the server (http.DefaultServeMux) on TCP port 8001, loops forever.
func (s *ProxyServer) Serve() error {
return http.ListenAndServe(":8001", nil)
}
func (s *ProxyServer) doError(w http.ResponseWriter, err error) {
w.WriteHeader(http.StatusInternalServerError)
w.Header().Add("Content-type", "application/json")
data, _ := api.Encode(api.Status{
Status: api.StatusFailure,
Message: fmt.Sprintf("internal error: %#v", err),
})
w.Write(data)
}
func (s *ProxyServer) ServeHTTP(w http.ResponseWriter, r *http.Request) {
result := s.Client.Verb(r.Method).AbsPath(r.URL.Path).Body(r.Body).Do()
if result.Error() != nil {
s.doError(w, result.Error())
return
}
data, err := result.Raw()
if err != nil {
s.doError(w, err)
return
}
w.Header().Add("Content-type", "application/json")
w.WriteHeader(http.StatusOK)
w.Write(data)
}