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
|
/*
* 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 rtcontext
import (
"fmt"
"github.com/onap/multicloud-k8s/src/orchestrator/pkg/infra/contextdb"
pkgerrors "github.com/pkg/errors"
"math/rand"
"strings"
"time"
)
const maxrand = 0x7fffffffffffffff
const prefix string = "/context/"
type RunTimeContext struct {
cid interface{}
meta interface{}
}
type Rtcontext interface {
RtcInit() (interface{}, error)
RtcLoad(interface{}) (interface{}, error)
RtcCreate() (interface{}, error)
RtcAddMeta(meta interface{}) error
RtcGet() (interface{}, error)
RtcAddLevel(handle interface{}, level string, value string) (interface{}, error)
RtcAddResource(handle interface{}, resname string, value interface{}) (interface{}, error)
RtcAddInstruction(handle interface{}, level string, insttype string, value interface{}) (interface{}, error)
RtcDeletePair(handle interface{}) error
RtcDeletePrefix(handle interface{}) error
RtcGetHandles(handle interface{}) ([]interface{}, error)
RtcGetValue(handle interface{}, value interface{}) error
RtcUpdateValue(handle interface{}, value interface{}) error
RtcGetMeta() (interface{}, error)
}
//Intialize context by assiging a new id
func (rtc *RunTimeContext) RtcInit() (interface{}, error) {
if rtc.cid != nil {
return nil, pkgerrors.Errorf("Error, context already initialized")
}
ra := rand.New(rand.NewSource(time.Now().UnixNano()))
rn := ra.Int63n(maxrand)
id := fmt.Sprintf("%v", rn)
cid := (prefix + id + "/")
rtc.cid = interface{}(cid)
return interface{}(id), nil
}
//Load context using the given id
func (rtc *RunTimeContext) RtcLoad(id interface{}) (interface{}, error) {
str := fmt.Sprintf("%v", id)
if str == "" {
return nil, pkgerrors.Errorf("Not a valid context id")
}
cid := (prefix + str + "/")
rtc.cid = interface{}(cid)
handle, err := rtc.RtcGet()
if err != nil {
return nil, pkgerrors.Errorf("Error finding the context id: %s", err.Error())
}
return handle, nil
}
func (rtc *RunTimeContext) RtcCreate() (interface{}, error) {
cid := fmt.Sprintf("%v", rtc.cid)
if cid == "" {
return nil, pkgerrors.Errorf("Error, context not intialized")
}
if !strings.HasPrefix(cid, prefix) {
return nil, pkgerrors.Errorf("Not a valid run time context prefix")
}
id := strings.SplitN(cid, "/", 4)[2]
err := contextdb.Db.Put(cid, id)
if err != nil {
return nil, pkgerrors.Errorf("Error creating run time context: %s", err.Error())
}
return rtc.cid, nil
}
//RtcAddMeta is used for saving meta data of appContext into ETCD.
func (rtc *RunTimeContext) RtcAddMeta(meta interface{}) error {
cid := fmt.Sprintf("%v", rtc.cid)
if cid == "" {
return pkgerrors.Errorf("Error, context not intialized")
}
if !strings.HasPrefix(cid, prefix) {
return pkgerrors.Errorf("Not a valid run time context prefix")
}
rtc.meta = meta
k := cid + "meta" + "/"
err := contextdb.Db.Put(k, rtc.meta)
if err != nil {
return pkgerrors.Errorf("Error saving metadata in run time context: %s", err.Error())
}
return nil
}
//Get the root handle
func (rtc *RunTimeContext) RtcGet() (interface{}, error) {
str := fmt.Sprintf("%v", rtc.cid)
if !strings.HasPrefix(str, prefix) {
return nil, pkgerrors.Errorf("Not a valid run time context")
}
var value string
err := contextdb.Db.Get(str, &value)
if err != nil {
return nil, pkgerrors.Errorf("Error getting run time context metadata: %s", err.Error())
}
if !strings.Contains(str, value) {
return nil, pkgerrors.Errorf("Error matching run time context metadata")
}
return rtc.cid, nil
}
// RtcGetMeta method fetches the meta data of the rtc object and returns it.
func (rtc *RunTimeContext) RtcGetMeta() (interface{}, error) {
str := fmt.Sprintf("%v", rtc.cid)
if !strings.HasPrefix(str, prefix) {
return nil, pkgerrors.Errorf("Not a valid run time context")
}
var value interface{}
k := str + "meta" + "/"
err := contextdb.Db.Get(k, &value)
if err != nil {
return nil, pkgerrors.Errorf("Error getting run time context metadata: %s", err.Error())
}
return value, nil
}
//Add a new level at a given handle and return the new handle
func (rtc *RunTimeContext) RtcAddLevel(handle interface{}, level string, value string) (interface{}, error) {
str := fmt.Sprintf("%v", handle)
sid := fmt.Sprintf("%v", rtc.cid)
if !strings.HasPrefix(str, sid) {
return nil, pkgerrors.Errorf("Not a valid run time context handle")
}
if level == "" {
return nil, pkgerrors.Errorf("Not a valid run time context level")
}
if value == "" {
return nil, pkgerrors.Errorf("Not a valid run time context level value")
}
key := str + level + "/" + value + "/"
err := contextdb.Db.Put(key, value)
if err != nil {
return nil, pkgerrors.Errorf("Error adding run time context level: %s", err.Error())
}
return (interface{})(key), nil
}
// Add a resource under the given level and return new handle
func (rtc *RunTimeContext) RtcAddResource(handle interface{}, resname string, value interface{}) (interface{}, error) {
str := fmt.Sprintf("%v", handle)
sid := fmt.Sprintf("%v", rtc.cid)
if !strings.HasPrefix(str, sid) {
return nil, pkgerrors.Errorf("Not a valid run time context handle")
}
if resname == "" {
return nil, pkgerrors.Errorf("Not a valid run time context resource name")
}
if value == nil {
return nil, pkgerrors.Errorf("Not a valid run time context resource value")
}
k := str + "resource" + "/" + resname + "/"
err := contextdb.Db.Put(k, value)
if err != nil {
return nil, pkgerrors.Errorf("Error adding run time context resource: %s", err.Error())
}
return (interface{})(k), nil
}
// Add instruction at a given level and type, return the new handle
func (rtc *RunTimeContext) RtcAddInstruction(handle interface{}, level string, insttype string, value interface{}) (interface{}, error) {
str := fmt.Sprintf("%v", handle)
sid := fmt.Sprintf("%v", rtc.cid)
if !strings.HasPrefix(str, sid) {
return nil, pkgerrors.Errorf("Not a valid run time context handle")
}
if level == "" {
return nil, pkgerrors.Errorf("Not a valid run time context level")
}
if insttype == "" {
return nil, pkgerrors.Errorf("Not a valid run time context instruction type")
}
if value == nil {
return nil, pkgerrors.Errorf("Not a valid run time context instruction value")
}
k := str + level + "/" + "instruction" + "/" + insttype + "/"
err := contextdb.Db.Put(k, fmt.Sprintf("%v", value))
if err != nil {
return nil, pkgerrors.Errorf("Error adding run time context instruction: %s", err.Error())
}
return (interface{})(k), nil
}
//Delete the key value pair using given handle
func (rtc *RunTimeContext) RtcDeletePair(handle interface{}) error {
str := fmt.Sprintf("%v", handle)
sid := fmt.Sprintf("%v", rtc.cid)
if !strings.HasPrefix(str, sid) {
return pkgerrors.Errorf("Not a valid run time context handle")
}
err := contextdb.Db.Delete(str)
if err != nil {
return pkgerrors.Errorf("Error deleting run time context pair: %s", err.Error())
}
return nil
}
// Delete all handles underneath the given handle
func (rtc *RunTimeContext) RtcDeletePrefix(handle interface{}) error {
str := fmt.Sprintf("%v", handle)
sid := fmt.Sprintf("%v", rtc.cid)
if !strings.HasPrefix(str, sid) {
return pkgerrors.Errorf("Not a valid run time context handle")
}
err := contextdb.Db.DeleteAll(str)
if err != nil {
return pkgerrors.Errorf("Error deleting run time context with prefix: %s", err.Error())
}
return nil
}
// Return the list of handles under the given handle
func (rtc *RunTimeContext) RtcGetHandles(handle interface{}) ([]interface{}, error) {
str := fmt.Sprintf("%v", handle)
sid := fmt.Sprintf("%v", rtc.cid)
if !strings.HasPrefix(str, sid) {
return nil, pkgerrors.Errorf("Not a valid run time context handle")
}
s, err := contextdb.Db.GetAllKeys(str)
if err != nil {
return nil, pkgerrors.Errorf("Error getting run time context handles: %s", err.Error())
}
r := make([]interface{}, len(s))
for i, v := range s {
r[i] = v
}
return r, nil
}
// Get the value for a given handle
func (rtc *RunTimeContext) RtcGetValue(handle interface{}, value interface{}) error {
str := fmt.Sprintf("%v", handle)
sid := fmt.Sprintf("%v", rtc.cid)
if !strings.HasPrefix(str, sid) {
return pkgerrors.Errorf("Not a valid run time context handle")
}
err := contextdb.Db.Get(str, value)
if err != nil {
return pkgerrors.Errorf("Error getting run time context value: %s", err.Error())
}
return nil
}
// Update the value of a given handle
func (rtc *RunTimeContext) RtcUpdateValue(handle interface{}, value interface{}) error {
str := fmt.Sprintf("%v", handle)
sid := fmt.Sprintf("%v", rtc.cid)
if !strings.HasPrefix(str, sid) {
return pkgerrors.Errorf("Not a valid run time context handle")
}
err := contextdb.Db.Put(str, value)
if err != nil {
return pkgerrors.Errorf("Error updating run time context value: %s", err.Error())
}
return nil
}
|
