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/*
* Copyright 2018 Intel Corporation, Inc
*
* 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 connection
import (
"bytes"
"encoding/base64"
"encoding/json"
"io"
"io/ioutil"
"net/http"
"github.com/gorilla/mux"
)
// ConnectionHandler is used to store backend implementations objects
// Also simplifies mocking for unit testing purposes
type ConnectionHandler struct {
// Interface that implements Connectivity operations
// We will set this variable with a mock interface for testing
Client ConnectionManager
}
// CreateHandler handles creation of the connectivity entry in the database
// This is a multipart handler. See following example curl request
// curl -i -F "metadata={\"cloud-region\":\"kud\",\"cloud-owner\":\"me\"};type=application/json" \
// -F file=@/home/user/.kube/config \
// -X POST http://localhost:8081/v1/connectivity-info
func (h ConnectionHandler) CreateHandler(w http.ResponseWriter, r *http.Request) {
var v Connection
// Implemenation using multipart form
// Review and enable/remove at a later date
// Set Max size to 16mb here
err := r.ParseMultipartForm(16777216)
if err != nil {
http.Error(w, err.Error(), http.StatusUnprocessableEntity)
return
}
jsn := bytes.NewBuffer([]byte(r.FormValue("metadata")))
err = json.NewDecoder(jsn).Decode(&v)
switch {
case err == io.EOF:
http.Error(w, "Empty body", http.StatusBadRequest)
return
case err != nil:
http.Error(w, err.Error(), http.StatusUnprocessableEntity)
return
}
// Name is required.
if v.CloudRegion == "" {
http.Error(w, "Missing name in POST request", http.StatusBadRequest)
return
}
// Cloudowner is required.
if v.CloudOwner == "" {
http.Error(w, "Missing cloudowner in POST request", http.StatusBadRequest)
return
}
//Read the file section and ignore the header
file, _, err := r.FormFile("file")
if err != nil {
http.Error(w, "Unable to process file", http.StatusUnprocessableEntity)
return
}
defer file.Close()
//Convert the file content to base64 for storage
content, err := ioutil.ReadAll(file)
if err != nil {
http.Error(w, "Unable to read file", http.StatusUnprocessableEntity)
return
}
v.Kubeconfig = base64.StdEncoding.EncodeToString(content)
ret, err := h.Client.Create(v)
if err != nil {
http.Error(w, err.Error(), http.StatusInternalServerError)
return
}
w.Header().Set("Content-Type", "application/json")
w.WriteHeader(http.StatusCreated)
err = json.NewEncoder(w).Encode(ret)
if err != nil {
http.Error(w, err.Error(), http.StatusInternalServerError)
return
}
}
// getHandler handles GET operations on a particular name
// Returns a Connectivity instance
func (h ConnectionHandler) GetHandler(w http.ResponseWriter, r *http.Request) {
vars := mux.Vars(r)
name := vars["connname"]
ret, err := h.Client.Get(name)
if err != nil {
http.Error(w, err.Error(), http.StatusInternalServerError)
return
}
w.Header().Set("Content-Type", "application/json")
w.WriteHeader(http.StatusOK)
err = json.NewEncoder(w).Encode(ret)
if err != nil {
http.Error(w, err.Error(), http.StatusInternalServerError)
return
}
}
// deleteHandler handles DELETE operations on a particular record
func (h ConnectionHandler) DeleteHandler(w http.ResponseWriter, r *http.Request) {
vars := mux.Vars(r)
name := vars["connname"]
err := h.Client.Delete(name)
if err != nil {
http.Error(w, err.Error(), http.StatusInternalServerError)
return
}
w.WriteHeader(http.StatusNoContent)
}
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