summaryrefslogtreecommitdiffstats
path: root/src/k8splugin/internal/app/config.go
blob: d0f8876d8c2929ced1f7c2b556d2141779880696 (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
/*
 * Copyright 2018 Intel Corporation, Inc
 * Copyright © 2021 Samsung Electronics
 *
 * 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 app

import (
	"strconv"
	"strings"

	"github.com/onap/multicloud-k8s/src/k8splugin/internal/db"

	pkgerrors "github.com/pkg/errors"
)

// Config contains the parameters needed for configuration
type Config struct {
	ConfigName   string                 `json:"config-name"`
	TemplateName string                 `json:"template-name"`
	Description  string                 `json:"description"`
	Values       map[string]interface{} `json:"values"`
}

//ConfigResult output for Create, Update and delete
type ConfigResult struct {
	InstanceName      string `json:"instance-id"`
	DefinitionName    string `json:"rb-name"`
	DefinitionVersion string `json:"rb-version"`
	ProfileName       string `json:"profile-name"`
	ConfigName        string `json:"config-name"`
	TemplateName      string `json:"template-name"`
	ConfigVersion     uint   `json:"config-verion"`
}

//ConfigRollback input
type ConfigRollback struct {
	AnyOf struct {
		ConfigVersion string `json:"config-version,omitempty"`
		ConfigTag     string `json:"config-tag,omitempty"`
	} `json:"anyOf"`
}

//ConfigTagit for Tagging configurations
type ConfigTagit struct {
	TagName string `json:"tag-name"`
}

// ConfigManager is an interface exposes the config functionality
type ConfigManager interface {
	Create(instanceID string, p Config) (ConfigResult, error)
	Get(instanceID, configName string) (Config, error)
	Help() map[string]string
	Update(instanceID, configName string, p Config) (ConfigResult, error)
	Delete(instanceID, configName string) (ConfigResult, error)
	Rollback(instanceID string, p ConfigRollback) error
	Tagit(instanceID string, p ConfigTagit) error
}

// ConfigClient implements the ConfigManager
// It will also be used to maintain some localized state
type ConfigClient struct {
	tagTag string
}

// NewConfigClient returns an instance of the ConfigClient
// which implements the ConfigManager
func NewConfigClient() *ConfigClient {
	return &ConfigClient{
		tagTag: "tag",
	}
}

// Help returns some information on how to create the content
// for the config in the form of html formatted page
func (v *ConfigClient) Help() map[string]string {
	ret := make(map[string]string)

	return ret
}

// Create an entry for the config in the database
func (v *ConfigClient) Create(instanceID string, p Config) (ConfigResult, error) {

	// Check required fields
	if p.ConfigName == "" || p.TemplateName == "" || len(p.Values) == 0 {
		return ConfigResult{}, pkgerrors.New("Incomplete Configuration Provided")
	}
	// Resolving rbName, Version, etc. not to break response
	rbName, rbVersion, profileName, _, err := resolveModelFromInstance(instanceID)
	if err != nil {
		return ConfigResult{}, pkgerrors.Wrap(err, "Retrieving model info")
	}
	cs := ConfigStore{
		instanceID: instanceID,
		configName: p.ConfigName,
	}
	_, err = cs.getConfig()
	if err == nil {
		return ConfigResult{}, pkgerrors.Wrap(err, "Create Error - Config exists")
	} else {
		if strings.Contains(err.Error(), "Key doesn't exist") == false {
			return ConfigResult{}, pkgerrors.Wrap(err, "Create Error")
		}
	}
	lock, profileChannel := getProfileData(instanceID)
	// Acquire per profile Mutex
	lock.Lock()
	defer lock.Unlock()
	err = applyConfig(instanceID, p, profileChannel, "POST")
	if err != nil {
		return ConfigResult{}, pkgerrors.Wrap(err, "Apply Config failed")
	}
	// Create Config DB Entry
	err = cs.createConfig(p)
	if err != nil {
		return ConfigResult{}, pkgerrors.Wrap(err, "Create Config DB Entry")
	}
	// Create Version Entry in DB for Config
	cvs := ConfigVersionStore{
		instanceID: instanceID,
	}
	version, err := cvs.createConfigVersion(p, Config{}, "POST")
	if err != nil {
		return ConfigResult{}, pkgerrors.Wrap(err, "Create Config Version DB Entry")
	}

	// Create Result structure
	cfgRes := ConfigResult{
		InstanceName:      instanceID,
		DefinitionName:    rbName,
		DefinitionVersion: rbVersion,
		ProfileName:       profileName,
		ConfigName:        p.ConfigName,
		TemplateName:      p.TemplateName,
		ConfigVersion:     version,
	}
	return cfgRes, nil
}

// Update an entry for the config in the database
func (v *ConfigClient) Update(instanceID, configName string, p Config) (ConfigResult, error) {

	// Check required fields
	if len(p.Values) == 0 {
		return ConfigResult{}, pkgerrors.New("Incomplete Configuration Provided")
	}
	// Resolving rbName, Version, etc. not to break response
	rbName, rbVersion, profileName, _, err := resolveModelFromInstance(instanceID)
	if err != nil {
		return ConfigResult{}, pkgerrors.Wrap(err, "Retrieving model info")
	}
	// Check if Config exists
	cs := ConfigStore{
		instanceID: instanceID,
		configName: configName,
	}
	_, err = cs.getConfig()
	if err != nil {
		return ConfigResult{}, pkgerrors.Wrap(err, "Update Error - Config doesn't exist")
	}
	lock, profileChannel := getProfileData(instanceID)
	// Acquire per profile Mutex
	lock.Lock()
	defer lock.Unlock()
	err = applyConfig(instanceID, p, profileChannel, "PUT")
	if err != nil {
		return ConfigResult{}, pkgerrors.Wrap(err, "Apply Config  failed")
	}
	// Update Config DB Entry
	configPrev, err := cs.updateConfig(p)
	if err != nil {
		return ConfigResult{}, pkgerrors.Wrap(err, "Update Config DB Entry")
	}
	// Create Version Entry in DB for Config
	cvs := ConfigVersionStore{
		instanceID: instanceID,
	}
	version, err := cvs.createConfigVersion(p, configPrev, "PUT")
	if err != nil {
		return ConfigResult{}, pkgerrors.Wrap(err, "Create Config Version DB Entry")
	}

	// Create Result structure
	cfgRes := ConfigResult{
		InstanceName:      instanceID,
		DefinitionName:    rbName,
		DefinitionVersion: rbVersion,
		ProfileName:       profileName,
		ConfigName:        p.ConfigName,
		TemplateName:      p.TemplateName,
		ConfigVersion:     version,
	}
	return cfgRes, nil
}

// Get config entry in the database
func (v *ConfigClient) Get(instanceID, configName string) (Config, error) {

	// Acquire per profile Mutex
	lock, _ := getProfileData(instanceID)
	lock.Lock()
	defer lock.Unlock()
	// Read Config DB
	cs := ConfigStore{
		instanceID: instanceID,
		configName: configName,
	}
	cfg, err := cs.getConfig()
	if err != nil {
		return Config{}, pkgerrors.Wrap(err, "Get Config DB Entry")
	}
	return cfg, nil
}

// Delete the Config from database
func (v *ConfigClient) Delete(instanceID, configName string) (ConfigResult, error) {

	// Resolving rbName, Version, etc. not to break response
	rbName, rbVersion, profileName, _, err := resolveModelFromInstance(instanceID)
	if err != nil {
		return ConfigResult{}, pkgerrors.Wrap(err, "Retrieving model info")
	}
	// Check if Config exists
	cs := ConfigStore{
		instanceID: instanceID,
		configName: configName,
	}
	p, err := cs.getConfig()
	if err != nil {
		return ConfigResult{}, pkgerrors.Wrap(err, "Update Error - Config doesn't exist")
	}
	lock, profileChannel := getProfileData(instanceID)
	// Acquire per profile Mutex
	lock.Lock()
	defer lock.Unlock()
	err = applyConfig(instanceID, p, profileChannel, "DELETE")
	if err != nil {
		return ConfigResult{}, pkgerrors.Wrap(err, "Apply Config  failed")
	}
	// Delete Config from DB
	configPrev, err := cs.deleteConfig()
	if err != nil {
		return ConfigResult{}, pkgerrors.Wrap(err, "Delete Config DB Entry")
	}
	// Create Version Entry in DB for Config
	cvs := ConfigVersionStore{
		instanceID: instanceID,
	}
	version, err := cvs.createConfigVersion(Config{}, configPrev, "DELETE")
	if err != nil {
		return ConfigResult{}, pkgerrors.Wrap(err, "Delete Config Version DB Entry")
	}

	// Create Result structure
	cfgRes := ConfigResult{
		InstanceName:      instanceID,
		DefinitionName:    rbName,
		DefinitionVersion: rbVersion,
		ProfileName:       profileName,
		ConfigName:        configName,
		TemplateName:      configPrev.TemplateName,
		ConfigVersion:     version,
	}
	return cfgRes, nil
}

// Rollback starts from current version and rollbacks to the version desired
func (v *ConfigClient) Rollback(instanceID string, rback ConfigRollback) error {

	var reqVersion string
	var err error

	if rback.AnyOf.ConfigTag != "" {
		reqVersion, err = v.GetTagVersion(instanceID, rback.AnyOf.ConfigTag)
		if err != nil {
			return pkgerrors.Wrap(err, "Rollback Invalid tag")
		}
	} else if rback.AnyOf.ConfigVersion != "" {
		reqVersion = rback.AnyOf.ConfigVersion
	} else {
		return pkgerrors.Errorf("No valid Index for Rollback")
	}

	index, err := strconv.Atoi(reqVersion)
	if err != nil {
		return pkgerrors.Wrap(err, "Rollback Invalid Index")
	}
	rollbackIndex := uint(index)

	lock, profileChannel := getProfileData(instanceID)
	// Acquire per profile Mutex
	lock.Lock()
	defer lock.Unlock()

	cvs := ConfigVersionStore{
		instanceID: instanceID,
	}
	currentVersion, err := cvs.getCurrentVersion()
	if err != nil {
		return pkgerrors.Wrap(err, "Rollback Get Current Config Version ")
	}

	if rollbackIndex < 1 && rollbackIndex >= currentVersion {
		return pkgerrors.Wrap(err, "Rollback Invalid Config Version")
	}

	//Rollback all the intermettinent configurations
	for i := currentVersion; i > rollbackIndex; i-- {
		configNew, configPrev, action, err := cvs.getConfigVersion(i)
		if err != nil {
			return pkgerrors.Wrap(err, "Rollback Get Config Version")
		}
		cs := ConfigStore{
			instanceID: instanceID,
			configName: configNew.ConfigName,
		}
		if action == "PUT" {
			// PUT is proceeded by PUT or POST
			err = applyConfig(instanceID, configPrev, profileChannel, "PUT")
			if err != nil {
				return pkgerrors.Wrap(err, "Apply Config  failed")
			}
			_, err = cs.updateConfig(configPrev)
			if err != nil {
				return pkgerrors.Wrap(err, "Update Config DB Entry")
			}
		} else if action == "POST" {
			// POST is always preceeded by Config not existing
			err = applyConfig(instanceID, configNew, profileChannel, "DELETE")
			if err != nil {
				return pkgerrors.Wrap(err, "Delete Config  failed")
			}
			_, err = cs.deleteConfig()
			if err != nil {
				return pkgerrors.Wrap(err, "Delete Config DB Entry")
			}
		} else if action == "DELETE" {
			// DELETE is proceeded by PUT or POST
			err = applyConfig(instanceID, configPrev, profileChannel, "PUT")
			if err != nil {
				return pkgerrors.Wrap(err, "Delete Config  failed")
			}
			_, err = cs.updateConfig(configPrev)
			if err != nil {
				return pkgerrors.Wrap(err, "Update Config DB Entry")
			}
		}
	}
	for i := currentVersion; i > rollbackIndex; i-- {
		// Delete rolled back items
		err = cvs.deleteConfigVersion()
		if err != nil {
			return pkgerrors.Wrap(err, "Delete Config Version ")
		}
	}
	return nil
}

// Tagit tags the current version with the tag provided
func (v *ConfigClient) Tagit(instanceID string, tag ConfigTagit) error {

	rbName, rbVersion, profileName, _, err := resolveModelFromInstance(instanceID)
	if err != nil {
		return pkgerrors.Wrap(err, "Retrieving model info")
	}
	lock, _ := getProfileData(instanceID)
	// Acquire per profile Mutex
	lock.Lock()
	defer lock.Unlock()

	cvs := ConfigVersionStore{
		instanceID: instanceID,
	}
	currentVersion, err := cvs.getCurrentVersion()
	if err != nil {
		return pkgerrors.Wrap(err, "Get Current Config Version ")
	}
	tagKey := constructKey(rbName, rbVersion, profileName, instanceID, v.tagTag, tag.TagName)

	err = db.Etcd.Put(tagKey, strconv.Itoa(int(currentVersion)))
	if err != nil {
		return pkgerrors.Wrap(err, "TagIt store DB")
	}
	return nil
}

// GetTagVersion returns the version associated with the tag
func (v *ConfigClient) GetTagVersion(instanceID, tagName string) (string, error) {

	rbName, rbVersion, profileName, _, err := resolveModelFromInstance(instanceID)
	if err != nil {
		return "", pkgerrors.Wrap(err, "Retrieving model info")
	}
	tagKey := constructKey(rbName, rbVersion, profileName, instanceID, v.tagTag, tagName)

	value, err := db.Etcd.Get(tagKey)
	if err != nil {
		return "", pkgerrors.Wrap(err, "Config DB Entry Not found")
	}
	return string(value), nil
}

// ApplyAllConfig starts from first configuration version and applies all versions in sequence
func (v *ConfigClient) ApplyAllConfig(instanceID string) error {

	lock, profileChannel := getProfileData(instanceID)
	// Acquire per profile Mutex
	lock.Lock()
	defer lock.Unlock()

	cvs := ConfigVersionStore{
		instanceID: instanceID,
	}
	currentVersion, err := cvs.getCurrentVersion()
	if err != nil {
		return pkgerrors.Wrap(err, "Get Current Config Version ")
	}
	if currentVersion < 1 {
		return pkgerrors.Wrap(err, "No Config Version to Apply")
	}
	//Apply all configurations
	var i uint
	for i = 1; i <= currentVersion; i++ {
		configNew, _, action, err := cvs.getConfigVersion(i)
		if err != nil {
			return pkgerrors.Wrap(err, "Get Config Version")
		}
		err = applyConfig(instanceID, configNew, profileChannel, action)
		if err != nil {
			return pkgerrors.Wrap(err, "Apply Config  failed")
		}
	}
	return nil
}