summaryrefslogtreecommitdiffstats
path: root/src/orchestrator/api/clusterhandler.go
blob: ac4191e1c786eb833b70c25a884a7866b8254baa (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
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
/*
 * 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/gorilla/mux"
)

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

// Create handles creation of the ClusterProvider entry in the database
func (h clusterHandler) createClusterProviderHandler(w http.ResponseWriter, r *http.Request) {
	var p moduleLib.ClusterProvider

	err := json.NewDecoder(r.Body).Decode(&p)

	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 p.Metadata.Name == "" {
		http.Error(w, "Missing name in POST request", http.StatusBadRequest)
		return
	}

	ret, err := h.client.CreateClusterProvider(p)
	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
	}
}

// Get handles GET operations on a particular ClusterProvider Name
// Returns a ClusterProvider
func (h clusterHandler) getClusterProviderHandler(w http.ResponseWriter, r *http.Request) {
	vars := mux.Vars(r)
	name := vars["name"]
	var ret interface{}
	var err error

	if len(name) == 0 {
		ret, err = h.client.GetClusterProviders()
		if err != nil {
			http.Error(w, err.Error(), http.StatusInternalServerError)
			return
		}
	} else {
		ret, err = h.client.GetClusterProvider(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
	}
}

// Delete handles DELETE operations on a particular ClusterProvider  Name
func (h clusterHandler) deleteClusterProviderHandler(w http.ResponseWriter, r *http.Request) {
	vars := mux.Vars(r)
	name := vars["name"]

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

	w.WriteHeader(http.StatusNoContent)
}

// Create handles creation of the Cluster entry in the database
func (h clusterHandler) createClusterHandler(w http.ResponseWriter, r *http.Request) {
	vars := mux.Vars(r)
	provider := vars["provider-name"]
	var p moduleLib.Cluster
	var q moduleLib.ClusterContent

	// 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(&p)
	switch {
	case err == io.EOF:
		http.Error(w, "Empty body", http.StatusBadRequest)
		return
	case err != nil:
		http.Error(w, err.Error(), http.StatusUnprocessableEntity)
		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
	}

	q.Kubeconfig = base64.StdEncoding.EncodeToString(content)

	// Name is required.
	if p.Metadata.Name == "" {
		http.Error(w, "Missing name in POST request", http.StatusBadRequest)
		return
	}

	ret, err := h.client.CreateCluster(provider, p, q)
	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
	}
}

// Get handles GET operations on a particular Cluster Name
// Returns a Cluster
func (h clusterHandler) getClusterHandler(w http.ResponseWriter, r *http.Request) {
	vars := mux.Vars(r)
	provider := vars["provider-name"]
	name := vars["name"]

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

		ret, err := h.client.GetClusters(provider)
		if err != nil {
			http.Error(w, err.Error(), http.StatusInternalServerError)
			return
		}

		for _, cl := range ret {
			retList = append(retList, moduleLib.Cluster{Metadata: cl.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
	}

	retCluster, err := h.client.GetCluster(provider, name)
	if err != nil {
		http.Error(w, err.Error(), http.StatusInternalServerError)
		return
	}

	retKubeconfig, err := h.client.GetClusterContent(provider, name)
	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(retCluster); 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=kubeconfig"}})
		if err != nil {
			http.Error(w, err.Error(), http.StatusInternalServerError)
			return
		}
		kcBytes, err := base64.StdEncoding.DecodeString(retKubeconfig.Kubeconfig)
		if err != nil {
			http.Error(w, err.Error(), http.StatusInternalServerError)
			return
		}
		_, err = pw.Write(kcBytes)
		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(retCluster)
		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)
		kcBytes, err := base64.StdEncoding.DecodeString(retKubeconfig.Kubeconfig)
		if err != nil {
			http.Error(w, err.Error(), http.StatusInternalServerError)
			return
		}
		_, err = w.Write(kcBytes)
		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
	}
}

// Delete handles DELETE operations on a particular Cluster Name
func (h clusterHandler) deleteClusterHandler(w http.ResponseWriter, r *http.Request) {
	vars := mux.Vars(r)
	provider := vars["provider-name"]
	name := vars["name"]

	err := h.client.DeleteCluster(provider, name)
	if err != nil {
		http.Error(w, err.Error(), http.StatusInternalServerError)
		return
	}

	w.WriteHeader(http.StatusNoContent)
}

// Create handles creation of the ClusterLabel entry in the database
func (h clusterHandler) createClusterLabelHandler(w http.ResponseWriter, r *http.Request) {
	vars := mux.Vars(r)
	provider := vars["provider-name"]
	cluster := vars["cluster-name"]
	var p moduleLib.ClusterLabel

	err := json.NewDecoder(r.Body).Decode(&p)

	// LabelName is required.
	if p.LabelName == "" {
		http.Error(w, "Missing label name in POST request", http.StatusBadRequest)
		return
	}

	ret, err := h.client.CreateClusterLabel(provider, cluster, p)
	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
	}
}

// Get handles GET operations on a particular Cluster Label
// Returns a ClusterLabel
func (h clusterHandler) getClusterLabelHandler(w http.ResponseWriter, r *http.Request) {
	vars := mux.Vars(r)
	provider := vars["provider-name"]
	cluster := vars["cluster-name"]
	label := vars["label"]

	var ret interface{}
	var err error

	if len(label) == 0 {
		ret, err = h.client.GetClusterLabels(provider, cluster)
		if err != nil {
			http.Error(w, err.Error(), http.StatusInternalServerError)
			return
		}
	} else {
		ret, err = h.client.GetClusterLabel(provider, cluster, label)
		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
	}
}

// Delete handles DELETE operations on a particular ClusterLabel Name
func (h clusterHandler) deleteClusterLabelHandler(w http.ResponseWriter, r *http.Request) {
	vars := mux.Vars(r)
	provider := vars["provider-name"]
	cluster := vars["cluster-name"]
	label := vars["label"]

	err := h.client.DeleteClusterLabel(provider, cluster, label)
	if err != nil {
		http.Error(w, err.Error(), http.StatusInternalServerError)
		return
	}

	w.WriteHeader(http.StatusNoContent)
}

// Create handles creation of the ClusterKvPairs entry in the database
func (h clusterHandler) createClusterKvPairsHandler(w http.ResponseWriter, r *http.Request) {
	vars := mux.Vars(r)
	provider := vars["provider-name"]
	cluster := vars["cluster-name"]
	var p moduleLib.ClusterKvPairs

	err := json.NewDecoder(r.Body).Decode(&p)

	// KvPairsName is required.
	if p.Metadata.Name == "" {
		http.Error(w, "Missing Key Value pair name in POST request", http.StatusBadRequest)
		return
	}

	ret, err := h.client.CreateClusterKvPairs(provider, cluster, p)
	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
	}
}

// Get handles GET operations on a particular Cluster Key Value Pair
// Returns a ClusterKvPairs
func (h clusterHandler) getClusterKvPairsHandler(w http.ResponseWriter, r *http.Request) {
	vars := mux.Vars(r)
	provider := vars["provider-name"]
	cluster := vars["cluster-name"]
	kvpair := vars["kvpair"]

	var ret interface{}
	var err error

	if len(kvpair) == 0 {
		ret, err = h.client.GetAllClusterKvPairs(provider, cluster)
		if err != nil {
			http.Error(w, err.Error(), http.StatusInternalServerError)
			return
		}
	} else {
		ret, err = h.client.GetClusterKvPairs(provider, cluster, kvpair)
		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
	}
}

// Delete handles DELETE operations on a particular Cluster Name
func (h clusterHandler) deleteClusterKvPairsHandler(w http.ResponseWriter, r *http.Request) {
	vars := mux.Vars(r)
	provider := vars["provider-name"]
	cluster := vars["cluster-name"]
	kvpair := vars["kvpair"]

	err := h.client.DeleteClusterKvPairs(provider, cluster, kvpair)
	if err != nil {
		http.Error(w, err.Error(), http.StatusInternalServerError)
		return
	}

	w.WriteHeader(http.StatusNoContent)
}