summaryrefslogtreecommitdiffstats
path: root/src/orchestrator/api/apphandler.go
blob: 06341e7ee120d5a413e0275d80928cf2db0e7104 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
/*
 * Copyright 2020 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 api

import (
	"bytes"
	"encoding/base64"
	"encoding/json"
	"io"
	"io/ioutil"
	"mime"
	"mime/multipart"
	"net/http"
	"net/textproto"

	moduleLib "github.com/onap/multicloud-k8s/src/orchestrator/pkg/module"
	"github.com/onap/multicloud-k8s/src/orchestrator/utils"

	"github.com/gorilla/mux"
)

// appHandler to store backend implementations objects
// Also simplifies mocking for unit testing purposes
type appHandler struct {
	// Interface that implements App operations
	// We will set this variable with a mock interface for testing
	client moduleLib.AppManager
}

// createAppHandler handles creation of the App entry in the database
// This is a multipart handler. See following example curl request
// curl -X POST http://localhost:9015/v2/projects/sampleProject/composite-apps/sampleCompositeApp/v1/apps \
// -F "metadata={\"metadata\":{\"name\":\"app\",\"description\":\"sample app\",\"UserData1\":\"data1\",\"UserData2\":\"data2\"}};type=application/json" \
// -F file=@/pathToFile

func (h appHandler) createAppHandler(w http.ResponseWriter, r *http.Request) {
	var a moduleLib.App
	var ac moduleLib.AppContent

	// Implemenation using multipart form
	// 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(&a)
	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 a.Metadata.Name == "" {
		http.Error(w, "Missing name 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
	}

	err = utils.IsTarGz(bytes.NewBuffer(content))
	if err != nil {
		http.Error(w, "Error in file format", http.StatusUnprocessableEntity)
		return
	}

	ac.FileContent = base64.StdEncoding.EncodeToString(content)

	vars := mux.Vars(r)
	projectName := vars["project-name"]
	compositeAppName := vars["composite-app-name"]
	compositeAppVersion := vars["version"]

	ret, err := h.client.CreateApp(a, ac, projectName, compositeAppName, compositeAppVersion)
	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
	}
}

// getAppHandler handles GET operations on a particular App Name
// Returns an app
func (h appHandler) getAppHandler(w http.ResponseWriter, r *http.Request) {
	vars := mux.Vars(r)
	projectName := vars["project-name"]
	compositeAppName := vars["composite-app-name"]
	compositeAppVersion := vars["version"]
	name := vars["app-name"]

	// handle the get all apps case - return a list of only the json parts
	if len(name) == 0 {
		var retList []moduleLib.App

		ret, err := h.client.GetApps(projectName, compositeAppName, compositeAppVersion)
		if err != nil {
			http.Error(w, err.Error(), http.StatusInternalServerError)
			return
		}

		for _, app := range ret {
			retList = append(retList, moduleLib.App{Metadata: app.Metadata})
		}

		w.Header().Set("Content-Type", "application/json")
		w.WriteHeader(http.StatusOK)
		err = json.NewEncoder(w).Encode(retList)
		if err != nil {
			http.Error(w, err.Error(), http.StatusInternalServerError)
			return
		}
		return
	}

	accepted, _, err := mime.ParseMediaType(r.Header.Get("Accept"))
	if err != nil {
		http.Error(w, err.Error(), http.StatusNotAcceptable)
		return
	}

	var retApp moduleLib.App
	var retAppContent moduleLib.AppContent

	retApp, err = h.client.GetApp(name, projectName, compositeAppName, compositeAppVersion)
	if err != nil {
		http.Error(w, err.Error(), http.StatusInternalServerError)
		return
	}

	retAppContent, err = h.client.GetAppContent(name, projectName, compositeAppName, compositeAppVersion)
	if err != nil {
		http.Error(w, err.Error(), http.StatusInternalServerError)
		return
	}

	switch accepted {
	case "multipart/form-data":
		mpw := multipart.NewWriter(w)
		w.Header().Set("Content-Type", mpw.FormDataContentType())
		w.WriteHeader(http.StatusOK)
		pw, err := mpw.CreatePart(textproto.MIMEHeader{"Content-Type": {"application/json"}, "Content-Disposition": {"form-data; name=metadata"}})
		if err != nil {
			http.Error(w, err.Error(), http.StatusInternalServerError)
			return
		}
		if err := json.NewEncoder(pw).Encode(retApp); err != nil {
			http.Error(w, err.Error(), http.StatusInternalServerError)
			return
		}
		pw, err = mpw.CreatePart(textproto.MIMEHeader{"Content-Type": {"application/octet-stream"}, "Content-Disposition": {"form-data; name=file; filename=fileContent"}})
		if err != nil {
			http.Error(w, err.Error(), http.StatusInternalServerError)
			return
		}
		fcBytes, err := base64.StdEncoding.DecodeString(retAppContent.FileContent)
		if err != nil {
			http.Error(w, err.Error(), http.StatusInternalServerError)
			return
		}
		_, err = pw.Write(fcBytes)
		if err != nil {
			http.Error(w, err.Error(), http.StatusInternalServerError)
			return
		}
	case "application/json":
		w.Header().Set("Content-Type", "application/json")
		w.WriteHeader(http.StatusOK)
		err = json.NewEncoder(w).Encode(retApp)
		if err != nil {
			http.Error(w, err.Error(), http.StatusInternalServerError)
			return
		}
	case "application/octet-stream":
		w.Header().Set("Content-Type", "application/octet-stream")
		w.WriteHeader(http.StatusOK)
		fcBytes, err := base64.StdEncoding.DecodeString(retAppContent.FileContent)
		if err != nil {
			http.Error(w, err.Error(), http.StatusInternalServerError)
			return
		}
		_, err = w.Write(fcBytes)
		if err != nil {
			http.Error(w, err.Error(), http.StatusInternalServerError)
			return
		}
	default:
		http.Error(w, "set Accept: multipart/form-data, application/json or application/octet-stream", http.StatusMultipleChoices)
		return
	}
}

// deleteAppHandler handles DELETE operations on a particular App Name
func (h appHandler) deleteAppHandler(w http.ResponseWriter, r *http.Request) {
	vars := mux.Vars(r)
	projectName := vars["project-name"]
	compositeAppName := vars["composite-app-name"]
	compositeAppVersion := vars["version"]
	name := vars["app-name"]

	err := h.client.DeleteApp(name, projectName, compositeAppName, compositeAppVersion)
	if err != nil {
		http.Error(w, err.Error(), http.StatusInternalServerError)
		return
	}

	w.WriteHeader(http.StatusNoContent)
}