github.com/deemoprobe/k8s-first-commit@v0.0.0-20230430165612-a541f1982be3/pkg/kubelet/kubelet_server.go (about)

     1  /*
     2  Copyright 2014 Google Inc. All rights reserved.
     3  
     4  Licensed under the Apache License, Version 2.0 (the "License");
     5  you may not use this file except in compliance with the License.
     6  You may obtain a copy of the License at
     7  
     8      http://www.apache.org/licenses/LICENSE-2.0
     9  
    10  Unless required by applicable law or agreed to in writing, software
    11  distributed under the License is distributed on an "AS IS" BASIS,
    12  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13  See the License for the specific language governing permissions and
    14  limitations under the License.
    15  */
    16  package kubelet
    17  
    18  import (
    19  	"fmt"
    20  	"io/ioutil"
    21  	"net/http"
    22  	"net/url"
    23  
    24  	"github.com/GoogleCloudPlatform/kubernetes/pkg/api"
    25  	"gopkg.in/v1/yaml"
    26  )
    27  
    28  type KubeletServer struct {
    29  	Kubelet       *Kubelet
    30  	UpdateChannel chan api.ContainerManifest
    31  }
    32  
    33  func (s *KubeletServer) error(w http.ResponseWriter, err error) {
    34  	w.WriteHeader(http.StatusInternalServerError)
    35  	fmt.Fprintf(w, "Internal Error: %#v", err)
    36  }
    37  
    38  func (s *KubeletServer) ServeHTTP(w http.ResponseWriter, req *http.Request) {
    39  	u, err := url.ParseRequestURI(req.RequestURI)
    40  	if err != nil {
    41  		s.error(w, err)
    42  		return
    43  	}
    44  	switch {
    45  	case u.Path == "/container":
    46  		defer req.Body.Close()
    47  		data, err := ioutil.ReadAll(req.Body)
    48  		if err != nil {
    49  			s.error(w, err)
    50  			return
    51  		}
    52  		var manifest api.ContainerManifest
    53  		err = yaml.Unmarshal(data, &manifest)
    54  		if err != nil {
    55  			s.error(w, err)
    56  			return
    57  		}
    58  		s.UpdateChannel <- manifest
    59  	case u.Path == "/containerInfo":
    60  		container := u.Query().Get("container")
    61  		if len(container) == 0 {
    62  			w.WriteHeader(http.StatusBadRequest)
    63  			fmt.Fprint(w, "Missing container query arg.")
    64  			return
    65  		}
    66  		id, err := s.Kubelet.GetContainerID(container)
    67  		body, err := s.Kubelet.GetContainerInfo(id)
    68  		if err != nil {
    69  			w.WriteHeader(http.StatusInternalServerError)
    70  			fmt.Fprintf(w, "Internal Error: %#v", err)
    71  			return
    72  		}
    73  		w.Header().Add("Content-type", "application/json")
    74  		w.WriteHeader(http.StatusOK)
    75  		fmt.Fprint(w, body)
    76  	default:
    77  		w.WriteHeader(http.StatusNotFound)
    78  		fmt.Fprint(w, "Not found.")
    79  	}
    80  }