/
resolver.go
393 lines (357 loc) · 12 KB
/
resolver.go
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
// Copyright 2019 HAProxy Technologies
//
// 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 configuration
import (
"errors"
"fmt"
"strconv"
"github.com/go-openapi/strfmt"
parser "github.com/haproxytech/config-parser/v5"
"github.com/haproxytech/config-parser/v5/common"
cp_errors "github.com/haproxytech/config-parser/v5/errors"
"github.com/haproxytech/config-parser/v5/types"
"github.com/haproxytech/client-native/v5/misc"
"github.com/haproxytech/client-native/v5/models"
)
type Resolver interface {
GetResolvers(transactionID string) (int64, models.Resolvers, error)
GetResolver(name string, transactionID string) (int64, *models.Resolver, error)
DeleteResolver(name string, transactionID string, version int64) error
EditResolver(name string, data *models.Resolver, transactionID string, version int64) error
CreateResolver(data *models.Resolver, transactionID string, version int64) error
}
// GetResolvers returns configuration version and an array of
// configured resolvers. Returns error on fail.
func (c *client) GetResolvers(transactionID string) (int64, models.Resolvers, error) {
p, err := c.GetParser(transactionID)
if err != nil {
return 0, nil, err
}
v, err := c.GetVersion(transactionID)
if err != nil {
return 0, nil, err
}
fNames, err := p.SectionsGet(parser.Resolvers)
if err != nil {
return v, nil, err
}
var resolver *models.Resolver
resolvers := []*models.Resolver{}
for _, name := range fNames {
if v, resolver, err = c.GetResolver(name, transactionID); err == nil {
resolvers = append(resolvers, resolver)
}
}
return v, resolvers, nil
}
// GetResolver returns configuration version and a requested resolver.
// Returns error on fail or if resolver does not exist.
func (c *client) GetResolver(name string, transactionID string) (int64, *models.Resolver, error) {
p, err := c.GetParser(transactionID)
if err != nil {
return 0, nil, err
}
v, err := c.GetVersion(transactionID)
if err != nil {
return 0, nil, err
}
if !c.checkSectionExists(parser.Resolvers, name, p) {
return v, nil, NewConfError(ErrObjectDoesNotExist, fmt.Sprintf("Resolver %s does not exist", name))
}
resolver := &models.Resolver{Name: name}
if err = ParseResolverSection(p, resolver); err != nil {
return 0, nil, err
}
return v, resolver, nil
}
// DeleteResolver deletes a resolver in configuration. One of version or transactionID is
// mandatory. Returns error on fail, nil on success.
func (c *client) DeleteResolver(name string, transactionID string, version int64) error {
p, t, err := c.loadDataForChange(transactionID, version)
if err != nil {
return err
}
if !c.checkSectionExists(parser.Resolvers, name, p) {
e := NewConfError(ErrObjectDoesNotExist, fmt.Sprintf("%s %s does not exist", parser.Resolvers, name))
return c.HandleError(name, "", "", t, transactionID == "", e)
}
if err := p.SectionsDelete(parser.Resolvers, name); err != nil {
return c.HandleError(name, "", "", t, transactionID == "", err)
}
return c.SaveData(p, t, transactionID == "")
}
// EditResolver edits a resolver in configuration. One of version or transactionID is
// mandatory. Returns error on fail, nil on success.
func (c *client) EditResolver(name string, data *models.Resolver, transactionID string, version int64) error {
if c.UseModelsValidation {
validationErr := data.Validate(strfmt.Default)
if validationErr != nil {
return NewConfError(ErrValidationError, validationErr.Error())
}
}
p, t, err := c.loadDataForChange(transactionID, version)
if err != nil {
return err
}
if !c.checkSectionExists(parser.Resolvers, name, p) {
e := NewConfError(ErrObjectDoesNotExist, fmt.Sprintf("%s %s does not exist", parser.Resolvers, name))
return c.HandleError(name, "", "", t, transactionID == "", e)
}
if err = SerializeResolverSection(p, data); err != nil {
return err
}
return c.SaveData(p, t, transactionID == "")
}
// CreateResolver creates a resolver in configuration. One of version or transactionID is
// mandatory. Returns error on fail, nil on success.
func (c *client) CreateResolver(data *models.Resolver, transactionID string, version int64) error {
if c.UseModelsValidation {
validationErr := data.Validate(strfmt.Default)
if validationErr != nil {
return NewConfError(ErrValidationError, validationErr.Error())
}
}
p, t, err := c.loadDataForChange(transactionID, version)
if err != nil {
return err
}
if c.checkSectionExists(parser.Resolvers, data.Name, p) {
e := NewConfError(ErrObjectAlreadyExists, fmt.Sprintf("%s %s already exists", parser.Resolvers, data.Name))
return c.HandleError(data.Name, "", "", t, transactionID == "", e)
}
if err = p.SectionsCreate(parser.Resolvers, data.Name); err != nil {
return c.HandleError(data.Name, "", "", t, transactionID == "", err)
}
if err = SerializeResolverSection(p, data); err != nil {
return err
}
return c.SaveData(p, t, transactionID == "")
}
func ParseResolverSection(p parser.Parser, resolver *models.Resolver) error { //nolint:gocognit,gocyclo,cyclop
var err error
var data common.ParserData
name := resolver.Name
if data, err = p.Get(parser.Resolvers, name, "accepted_payload_size", false); err == nil {
d, ok := data.(*types.StringC)
if ok && d != nil {
if n, errInt := strconv.ParseInt(d.Value, 10, 64); errInt == nil {
resolver.AcceptedPayloadSize = n
}
}
} else if !errors.Is(err, cp_errors.ErrFetch) {
return err
}
if data, err = p.Get(parser.Resolvers, name, "hold nx", false); err == nil {
d, ok := data.(*types.StringC)
if ok && d != nil {
resolver.HoldNx = misc.ParseTimeout(d.Value)
}
} else if !errors.Is(err, cp_errors.ErrFetch) {
return err
}
if data, err = p.Get(parser.Resolvers, name, "hold obsolete", false); err == nil {
d, ok := data.(*types.StringC)
if ok && d != nil {
resolver.HoldObsolete = misc.ParseTimeout(d.Value)
}
} else if !errors.Is(err, cp_errors.ErrFetch) {
return err
}
if data, err = p.Get(parser.Resolvers, name, "hold other", false); err == nil {
d, ok := data.(*types.StringC)
if ok && d != nil {
resolver.HoldOther = misc.ParseTimeout(d.Value)
}
} else if !errors.Is(err, cp_errors.ErrFetch) {
return err
}
if data, err = p.Get(parser.Resolvers, name, "hold refused", false); err == nil {
d, ok := data.(*types.StringC)
if ok && d != nil {
resolver.HoldRefused = misc.ParseTimeout(d.Value)
}
} else if !errors.Is(err, cp_errors.ErrFetch) {
return err
}
if data, err = p.Get(parser.Resolvers, name, "hold timeout", false); err == nil {
d, ok := data.(*types.StringC)
if ok && d != nil {
resolver.HoldTimeout = misc.ParseTimeout(d.Value)
}
} else if !errors.Is(err, cp_errors.ErrFetch) {
return err
}
if data, err = p.Get(parser.Resolvers, name, "hold valid", false); err == nil {
d, ok := data.(*types.StringC)
if ok && d != nil {
resolver.HoldValid = misc.ParseTimeout(d.Value)
}
} else if !errors.Is(err, cp_errors.ErrFetch) {
return err
}
if data, err = p.Get(parser.Resolvers, name, "resolve_retries", false); err == nil {
d, ok := data.(*types.StringC)
if ok && d != nil {
if n, errInt := strconv.ParseInt(d.Value, 10, 64); errInt == nil {
resolver.ResolveRetries = n
}
}
} else if !errors.Is(err, cp_errors.ErrFetch) {
return err
}
if data, err = p.Get(parser.Resolvers, name, "parse-resolv-conf", false); err == nil {
d, ok := data.(*types.Enabled)
if ok && d != nil {
resolver.ParseResolvConf = true
}
} else if !errors.Is(err, cp_errors.ErrFetch) {
return err
}
if data, err = p.Get(parser.Resolvers, name, "timeout resolve", false); err == nil {
d, ok := data.(*types.SimpleTimeout)
if ok && d != nil {
tOut := misc.ParseTimeout(d.Value)
if tOut != nil {
resolver.TimeoutResolve = *tOut
}
}
} else if !errors.Is(err, cp_errors.ErrFetch) {
return err
}
if data, err = p.Get(parser.Resolvers, name, "timeout retry", false); err == nil {
d, ok := data.(*types.SimpleTimeout)
if ok && d != nil {
tOut := misc.ParseTimeout(d.Value)
if tOut != nil {
resolver.TimeoutRetry = *tOut
}
}
} else if !errors.Is(err, cp_errors.ErrFetch) {
return err
}
return nil
}
func SerializeResolverSection(p parser.Parser, data *models.Resolver) error { //nolint:gocognit
var err error
if data.AcceptedPayloadSize == 0 {
if err = p.Set(parser.Resolvers, data.Name, "accepted_payload_size", nil); err != nil {
return err
}
} else {
n := types.StringC{Value: strconv.FormatInt(data.AcceptedPayloadSize, 10)}
if err = p.Set(parser.Resolvers, data.Name, "accepted_payload_size", n); err != nil {
return err
}
}
if data.HoldNx == nil {
if err = p.Set(parser.Resolvers, data.Name, "hold nx", nil); err != nil {
return err
}
} else {
n := types.StringC{Value: strconv.FormatInt(*data.HoldNx, 10)}
if err = p.Set(parser.Resolvers, data.Name, "hold nx", n); err != nil {
return err
}
}
if data.HoldObsolete == nil {
if err = p.Set(parser.Resolvers, data.Name, "hold obsolete", nil); err != nil {
return err
}
} else {
n := types.StringC{Value: strconv.FormatInt(*data.HoldObsolete, 10)}
if err = p.Set(parser.Resolvers, data.Name, "hold obsolete", n); err != nil {
return err
}
}
if data.HoldOther == nil {
if err = p.Set(parser.Resolvers, data.Name, "hold other", nil); err != nil {
return err
}
} else {
n := types.StringC{Value: strconv.FormatInt(*data.HoldOther, 10)}
if err = p.Set(parser.Resolvers, data.Name, "hold other", n); err != nil {
return err
}
}
if data.HoldRefused == nil {
if err = p.Set(parser.Resolvers, data.Name, "hold refused", nil); err != nil {
return err
}
} else {
n := types.StringC{Value: strconv.FormatInt(*data.HoldRefused, 10)}
if err = p.Set(parser.Resolvers, data.Name, "hold refused", n); err != nil {
return err
}
}
if data.HoldTimeout == nil {
if err = p.Set(parser.Resolvers, data.Name, "hold timeout", nil); err != nil {
return err
}
} else {
n := types.StringC{Value: strconv.FormatInt(*data.HoldTimeout, 10)}
if err = p.Set(parser.Resolvers, data.Name, "hold timeout", n); err != nil {
return err
}
}
if data.HoldValid == nil {
if err = p.Set(parser.Resolvers, data.Name, "hold valid", nil); err != nil {
return err
}
} else {
n := types.StringC{Value: strconv.FormatInt(*data.HoldValid, 10)}
if err = p.Set(parser.Resolvers, data.Name, "hold valid", n); err != nil {
return err
}
}
if data.ParseResolvConf {
b := &types.Enabled{}
if err = p.Set(parser.Resolvers, data.Name, "parse-resolv-conf", b); err != nil {
return err
}
} else if err = p.Set(parser.Resolvers, data.Name, "parse-resolv-conf", nil); err != nil {
return err
}
if data.ResolveRetries == 0 {
if err = p.Set(parser.Resolvers, data.Name, "resolve_retries", nil); err != nil {
return err
}
} else {
n := types.StringC{Value: strconv.FormatInt(data.ResolveRetries, 10)}
if err = p.Set(parser.Resolvers, data.Name, "resolve_retries", n); err != nil {
return err
}
}
if data.TimeoutResolve == 0 {
if err = p.Set(parser.Resolvers, data.Name, "timeout resolve", nil); err != nil {
return err
}
} else {
timeout := types.SimpleTimeout{Value: strconv.FormatInt(data.TimeoutResolve, 10)}
if err = p.Set(parser.Resolvers, data.Name, "timeout resolve", timeout); err != nil {
return err
}
}
if data.TimeoutRetry == 0 {
if err = p.Set(parser.Resolvers, data.Name, "timeout retry", nil); err != nil {
return err
}
} else {
timeout := types.SimpleTimeout{Value: strconv.FormatInt(data.TimeoutRetry, 10)}
if err = p.Set(parser.Resolvers, data.Name, "timeout retry", timeout); err != nil {
return err
}
}
return err
}