Repository navigation
Expand file tree
/
Copy pathconfig.go
More file actions
730 lines (668 loc) · 17.4 KB
/
Copy pathconfig.go
File metadata and controls
730 lines (668 loc) · 17.4 KB
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
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
/*
* MinIO Cloud Storage, (C) 2019 MinIO, 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 config
import (
"bufio"
"fmt"
"io"
"regexp"
"strings"
"github.com/minio/minio-go/v7/pkg/set"
"github.com/minio/minio/pkg/auth"
"github.com/minio/minio/pkg/env"
"github.com/minio/minio/pkg/madmin"
)
// Error config error type
type Error struct {
Err string
}
// Errorf - formats according to a format specifier and returns
// the string as a value that satisfies error of type config.Error
func Errorf(format string, a ...interface{}) error {
return Error{Err: fmt.Sprintf(format, a...)}
}
func (e Error) Error() string {
return e.Err
}
// Default keys
const (
Default = madmin.Default
Enable = madmin.EnableKey
Comment = madmin.CommentKey
// Enable values
EnableOn = madmin.EnableOn
EnableOff = madmin.EnableOff
RegionName = "name"
AccessKey = "access_key"
SecretKey = "secret_key"
)
// Top level config constants.
const (
CredentialsSubSys = "credentials"
PolicyOPASubSys = "policy_opa"
IdentityOpenIDSubSys = "identity_openid"
IdentityLDAPSubSys = "identity_ldap"
CacheSubSys = "cache"
RegionSubSys = "region"
EtcdSubSys = "etcd"
StorageClassSubSys = "storage_class"
APISubSys = "api"
CompressionSubSys = "compression"
KmsVaultSubSys = "kms_vault"
KmsKesSubSys = "kms_kes"
LoggerWebhookSubSys = "logger_webhook"
AuditWebhookSubSys = "audit_webhook"
HealSubSys = "heal"
// Add new constants here if you add new fields to config.
)
// Notification config constants.
const (
NotifyKafkaSubSys = "notify_kafka"
NotifyMQTTSubSys = "notify_mqtt"
NotifyMySQLSubSys = "notify_mysql"
NotifyNATSSubSys = "notify_nats"
NotifyNSQSubSys = "notify_nsq"
NotifyESSubSys = "notify_elasticsearch"
NotifyAMQPSubSys = "notify_amqp"
NotifyPostgresSubSys = "notify_postgres"
NotifyRedisSubSys = "notify_redis"
NotifyWebhookSubSys = "notify_webhook"
// Add new constants here if you add new fields to config.
)
// SubSystems - all supported sub-systems
var SubSystems = set.CreateStringSet([]string{
CredentialsSubSys,
RegionSubSys,
EtcdSubSys,
CacheSubSys,
APISubSys,
StorageClassSubSys,
CompressionSubSys,
KmsVaultSubSys,
KmsKesSubSys,
LoggerWebhookSubSys,
AuditWebhookSubSys,
PolicyOPASubSys,
IdentityLDAPSubSys,
IdentityOpenIDSubSys,
HealSubSys,
NotifyAMQPSubSys,
NotifyESSubSys,
NotifyKafkaSubSys,
NotifyMQTTSubSys,
NotifyMySQLSubSys,
NotifyNATSSubSys,
NotifyNSQSubSys,
NotifyPostgresSubSys,
NotifyRedisSubSys,
NotifyWebhookSubSys,
}...)
// SubSystemsSingleTargets - subsystems which only support single target.
var SubSystemsSingleTargets = set.CreateStringSet([]string{
CredentialsSubSys,
RegionSubSys,
EtcdSubSys,
CacheSubSys,
APISubSys,
StorageClassSubSys,
CompressionSubSys,
KmsVaultSubSys,
KmsKesSubSys,
PolicyOPASubSys,
IdentityLDAPSubSys,
IdentityOpenIDSubSys,
HealSubSys,
}...)
// Constant separators
const (
SubSystemSeparator = madmin.SubSystemSeparator
KvSeparator = madmin.KvSeparator
KvSpaceSeparator = madmin.KvSpaceSeparator
KvComment = madmin.KvComment
KvNewline = madmin.KvNewline
KvDoubleQuote = madmin.KvDoubleQuote
KvSingleQuote = madmin.KvSingleQuote
// Env prefix used for all envs in MinIO
EnvPrefix = "MINIO_"
EnvWordDelimiter = `_`
)
// DefaultKVS - default kvs for all sub-systems
var DefaultKVS map[string]KVS
// RegisterDefaultKVS - this function saves input kvsMap
// globally, this should be called only once preferably
// during `init()`.
func RegisterDefaultKVS(kvsMap map[string]KVS) {
DefaultKVS = map[string]KVS{}
for subSys, kvs := range kvsMap {
DefaultKVS[subSys] = kvs
}
}
// HelpSubSysMap - help for all individual KVS for each sub-systems
// also carries a special empty sub-system which dumps
// help for each sub-system key.
var HelpSubSysMap map[string]HelpKVS
// RegisterHelpSubSys - this function saves
// input help KVS for each sub-system globally,
// this function should be called only once
// preferably in during `init()`.
func RegisterHelpSubSys(helpKVSMap map[string]HelpKVS) {
HelpSubSysMap = map[string]HelpKVS{}
for subSys, hkvs := range helpKVSMap {
HelpSubSysMap[subSys] = hkvs
}
}
// KV - is a shorthand of each key value.
type KV struct {
Key string `json:"key"`
Value string `json:"value"`
}
// KVS - is a shorthand for some wrapper functions
// to operate on list of key values.
type KVS []KV
// Empty - return if kv is empty
func (kvs KVS) Empty() bool {
return len(kvs) == 0
}
// Keys returns the list of keys for the current KVS
func (kvs KVS) Keys() []string {
var keys = make([]string, len(kvs))
var foundComment bool
for i := range kvs {
if kvs[i].Key == madmin.CommentKey {
foundComment = true
}
keys[i] = kvs[i].Key
}
// Comment KV not found, add it explicitly.
if !foundComment {
keys = append(keys, madmin.CommentKey)
}
return keys
}
func (kvs KVS) String() string {
var s strings.Builder
for _, kv := range kvs {
// Do not need to print if state is on
if kv.Key == Enable && kv.Value == EnableOn {
continue
}
s.WriteString(kv.Key)
s.WriteString(KvSeparator)
spc := madmin.HasSpace(kv.Value)
if spc {
s.WriteString(KvDoubleQuote)
}
s.WriteString(kv.Value)
if spc {
s.WriteString(KvDoubleQuote)
}
s.WriteString(KvSpaceSeparator)
}
return s.String()
}
// Set sets a value, if not sets a default value.
func (kvs *KVS) Set(key, value string) {
for i, kv := range *kvs {
if kv.Key == key {
(*kvs)[i] = KV{
Key: key,
Value: value,
}
return
}
}
*kvs = append(*kvs, KV{
Key: key,
Value: value,
})
}
// Get - returns the value of a key, if not found returns empty.
func (kvs KVS) Get(key string) string {
v, ok := kvs.Lookup(key)
if ok {
return v
}
return ""
}
// Delete - deletes the key if present from the KV list.
func (kvs *KVS) Delete(key string) {
for i, kv := range *kvs {
if kv.Key == key {
*kvs = append((*kvs)[:i], (*kvs)[i+1:]...)
return
}
}
}
// Lookup - lookup a key in a list of KVS
func (kvs KVS) Lookup(key string) (string, bool) {
for _, kv := range kvs {
if kv.Key == key {
return kv.Value, true
}
}
return "", false
}
// Config - MinIO server config structure.
type Config map[string]map[string]KVS
// DelFrom - deletes all keys in the input reader.
func (c Config) DelFrom(r io.Reader) error {
scanner := bufio.NewScanner(r)
for scanner.Scan() {
// Skip any empty lines, or comment like characters
text := scanner.Text()
if text == "" || strings.HasPrefix(text, KvComment) {
continue
}
if err := c.DelKVS(text); err != nil {
return err
}
}
if err := scanner.Err(); err != nil {
return err
}
return nil
}
// ReadFrom - implements io.ReaderFrom interface
func (c Config) ReadFrom(r io.Reader) (int64, error) {
var n int
scanner := bufio.NewScanner(r)
for scanner.Scan() {
// Skip any empty lines, or comment like characters
text := scanner.Text()
if text == "" || strings.HasPrefix(text, KvComment) {
continue
}
if err := c.SetKVS(text, DefaultKVS); err != nil {
return 0, err
}
n += len(text)
}
if err := scanner.Err(); err != nil {
return 0, err
}
return int64(n), nil
}
type configWriteTo struct {
Config
filterByKey string
}
// NewConfigWriteTo - returns a struct which
// allows for serializing the config/kv struct
// to a io.WriterTo
func NewConfigWriteTo(cfg Config, key string) io.WriterTo {
return &configWriteTo{Config: cfg, filterByKey: key}
}
// WriteTo - implements io.WriterTo interface implementation for config.
func (c *configWriteTo) WriteTo(w io.Writer) (int64, error) {
kvsTargets, err := c.GetKVS(c.filterByKey, DefaultKVS)
if err != nil {
return 0, err
}
var n int
for _, target := range kvsTargets {
m1, _ := w.Write([]byte(target.SubSystem))
m2, _ := w.Write([]byte(KvSpaceSeparator))
m3, _ := w.Write([]byte(target.KVS.String()))
if len(kvsTargets) > 1 {
m4, _ := w.Write([]byte(KvNewline))
n += m1 + m2 + m3 + m4
} else {
n += m1 + m2 + m3
}
}
return int64(n), nil
}
// Default KV configs for worm and region
var (
DefaultCredentialKVS = KVS{
KV{
Key: AccessKey,
Value: auth.DefaultAccessKey,
},
KV{
Key: SecretKey,
Value: auth.DefaultSecretKey,
},
}
DefaultRegionKVS = KVS{
KV{
Key: RegionName,
Value: "",
},
}
)
// LookupCreds - lookup credentials from config.
func LookupCreds(kv KVS) (auth.Credentials, error) {
if err := CheckValidKeys(CredentialsSubSys, kv, DefaultCredentialKVS); err != nil {
return auth.Credentials{}, err
}
accessKey := kv.Get(AccessKey)
secretKey := kv.Get(SecretKey)
if accessKey == "" || secretKey == "" {
accessKey = auth.DefaultAccessKey
secretKey = auth.DefaultSecretKey
}
return auth.CreateCredentials(accessKey, secretKey)
}
var validRegionRegex = regexp.MustCompile("^[a-zA-Z][a-zA-Z0-9-_-]+$")
// LookupRegion - get current region.
func LookupRegion(kv KVS) (string, error) {
if err := CheckValidKeys(RegionSubSys, kv, DefaultRegionKVS); err != nil {
return "", err
}
region := env.Get(EnvRegion, "")
if region == "" {
region = env.Get(EnvRegionName, kv.Get(RegionName))
}
if region != "" {
if validRegionRegex.MatchString(region) {
return region, nil
}
return "", Errorf(
"region '%s' is invalid, expected simple characters such as [us-east-1, myregion...]",
region)
}
return "", nil
}
// CheckValidKeys - checks if inputs KVS has the necessary keys,
// returns error if it find extra or superflous keys.
func CheckValidKeys(subSys string, kv KVS, validKVS KVS) error {
nkv := KVS{}
for _, kv := range kv {
// Comment is a valid key, its also fully optional
// ignore it since it is a valid key for all
// sub-systems.
if kv.Key == Comment {
continue
}
if _, ok := validKVS.Lookup(kv.Key); !ok {
nkv = append(nkv, kv)
}
}
if len(nkv) > 0 {
return Errorf(
"found
8BD0
invalid keys (%s) for '%s' sub-system, use 'mc admin config reset myminio %s' to fix invalid keys", nkv.String(), subSys, subSys)
}
return nil
}
// LookupWorm - check if worm is enabled
func LookupWorm() (bool, error) {
return ParseBool(env.Get(EnvWorm, EnableOff))
}
// Merge - merges a new config with all the
// missing values for default configs,
// returns a config.
func (c Config) Merge() Config {
cp := New()
for subSys, tgtKV := range c {
for tgt := range tgtKV {
ckvs := c[subSys][tgt]
for _, kv := range cp[subSys][Default] {
_, ok := c[subSys][tgt].Lookup(kv.Key)
if !ok {
ckvs.Set(kv.Key, kv.Value)
}
}
if _, ok := cp[subSys]; !ok {
// A config subsystem was removed or server was downgraded.
Logger.Info("config: ignoring unknown subsystem config %q\n", subSys)
continue
}
cp[subSys][tgt] = ckvs
}
}
return cp
}
// New - initialize a new server config.
func New() Config {
srvCfg := make(Config)
for _, k := range SubSystems.ToSlice() {
srvCfg[k] = map[string]KVS{}
srvCfg[k][Default] = DefaultKVS[k]
}
return srvCfg
}
// Target signifies an individual target
type Target struct {
SubSystem string
KVS KVS
}
// Targets sub-system targets
type Targets []Target
// GetKVS - get kvs from specific subsystem.
func (c Config) GetKVS(s string, defaultKVS map[string]KVS) (Targets, error) {
if len(s) == 0 {
return nil, Errorf("input cannot be empty")
}
inputs := strings.Fields(s)
if len(inputs) > 1 {
return nil, Errorf("invalid number of arguments %s", s)
}
subSystemValue := strings.SplitN(inputs[0], SubSystemSeparator, 2)
if len(subSystemValue) == 0 {
return nil, Errorf("invalid number of arguments %s", s)
}
found := SubSystems.Contains(subSystemValue[0])
if !found {
// Check for sub-prefix only if the input value is only a
// single value, this rejects invalid inputs if any.
found = !SubSystems.FuncMatch(strings.HasPrefix, subSystemValue[0]).IsEmpty() && len(subSystemValue) == 1
}
if !found {
return nil, Errorf("unknown sub-system %s", s)
}
targets := Targets{}
subSysPrefix := subSystemValue[0]
if len(subSystemValue) == 2 {
if len(subSystemValue[1]) == 0 {
return nil, Errorf("sub-system target '%s' cannot be empty", s)
}
kvs, ok := c[subSysPrefix][subSystemValue[1]]
if !ok {
return nil, Errorf("sub-system target '%s' doesn't exist", s)
}
for _, kv := range defaultKVS[subSysPrefix] {
_, ok = kvs.Lookup(kv.Key)
if !ok {
kvs.Set(kv.Key, kv.Value)
}
}
targets = append(targets, Target{
SubSystem: inputs[0],
KVS: kvs,
})
} else {
hkvs := HelpSubSysMap[""]
// Use help for sub-system to preserve the order.
for _, hkv := range hkvs {
if !strings.HasPrefix(hkv.Key, subSysPrefix) {
continue
}
if c[hkv.Key][Default].Empty() {
targets = append(targets, Target{
SubSystem: hkv.Key,
KVS: defaultKVS[hkv.Key],
})
}
for k, kvs := range c[hkv.Key] {
for _, dkv := range defaultKVS[hkv.Key] {
_, ok := kvs.Lookup(dkv.Key)
if !ok {
kvs.Set(dkv.Key, dkv.Value)
}
}
if k != Default {
targets = append(targets, Target{
SubSystem: hkv.Key + SubSystemSeparator + k,
KVS: kvs,
})
} else {
targets = append(targets, Target{
SubSystem: hkv.Key,
KVS: kvs,
})
}
}
}
}
return targets, nil
}
// DelKVS - delete a specific key.
func (c Config) DelKVS(s string) error {
if len(s) == 0 {
return Errorf("input arguments cannot be empty")
}
inputs := strings.Fields(s)
if len(inputs) > 1 {
return Errorf("invalid number of arguments %s", s)
}
subSystemValue := strings.SplitN(inputs[0], SubSystemSeparator, 2)
if len(subSystemValue) == 0 {
return Errorf("invalid number of arguments %s", s)
}
if !SubSystems.Contains(subSystemValue[0]) {
// Unknown sub-system found try to remove it anyways.
delete(c, subSystemValue[0])
return nil
}
tgt := Default
subSys := subSystemValue[0]
if len(subSystemValue) == 2 {
if len(subSystemValue[1]) == 0 {
return Errorf("sub-system target '%s' cannot be empty", s)
}
tgt = subSystemValue[1]
}
_, ok := c[subSys][tgt]
if !ok {
return Errorf("sub-system %s already deleted", s)
}
delete(c[subSys], tgt)
return nil
}
// Clone - clones a config map entirely.
func (c Config) Clone() Config {
cp := New()
for subSys, tgtKV := range c {
cp[subSys] = make(map[string]KVS)
for tgt, kv := range tgtKV {
cp[subSys][tgt] = append(cp[subSys][tgt], kv...)
}
}
return cp
}
// SetKVS - set specific key values per sub-system.
func (c Config) SetKVS(s string, defaultKVS map[string]KVS) error {
if len(s) == 0 {
return Errorf("input arguments cannot be empty")
}
inputs := strings.SplitN(s, KvSpaceSeparator, 2)
if len(inputs) <= 1 {
return Errorf("invalid number of arguments '%s'", s)
}
subSystemValue := strings.SplitN(inputs[0], SubSystemSeparator, 2)
if len(subSystemValue) == 0 {
return Errorf("invalid number of arguments %s", s)
}
if !SubSystems.Contains(subSystemValue[0]) {
return Errorf("unknown sub-system %s", s)
}
if SubSystemsSingleTargets.Contains(subSystemValue[0]) && len(subSystemValue) == 2 {
return Errorf("sub-system '%s' only supports single target", subSystemValue[0])
}
tgt := Default
subSys := subSystemValue[0]
if len(subSystemValue) == 2 {
tgt = subSystemValue[1]
}
fields := madmin.KvFields(inputs[1], defaultKVS[subSys].Keys())
if len(fields) == 0 {
return Errorf("sub-system '%s' cannot have empty keys", subSys)
}
var kvs = KVS{}
var prevK string
for _, v := range fields {
kv := strings.SplitN(v, KvSeparator, 2)
if len(kv) == 0 {
continue
}
if len(kv) == 1 && prevK != "" {
value := strings.Join([]string{
kvs.Get(prevK),
madmin.SanitizeValue(kv[0]),
}, KvSpaceSeparator)
kvs.Set(prevK, value)
continue
}
if len(kv) == 2 {
prevK = kv[0]
kvs.Set(prevK, madmin.SanitizeValue(kv[1]))
continue
}
return Errorf("key '%s', cannot have empty value", kv[0])
}
_, ok := kvs.Lookup(Enable)
// Check if state is required
_, enableRequired := defaultKVS[subSys].Lookup(Enable)
if !ok && enableRequired {
// implicit state "on" if not specified.
kvs.Set(Enable, EnableOn)
}
currKVS, ok := c[subSys][tgt]
if !ok {
currKVS = defaultKVS[subSys]
} else {
for _, kv := range defaultKVS[subSys] {
if _, ok = currKVS.Lookup(kv.Key); !ok {
currKVS.Set(kv.Key, kv.Value)
}
}
}
for _, kv := range kvs {
if kv.Key == Comment {
// Skip comment and add it later.
continue
}
currKVS.Set(kv.Key, kv.Value)
}
v, ok := kvs.Lookup(Comment)
if ok {
currKVS.Set(Comment, v)
}
hkvs := HelpSubSysMap[subSys]
for _, hkv := range hkvs {
var enabled bool
if enableRequired {
enabled = currKVS.Get(Enable) == EnableOn
} else {
// when enable arg is not required
// then it is implicit on for the sub-system.
enabled = true
}
v, _ := currKVS.Lookup(hkv.Key)
if v == "" && !hkv.Optional && enabled {
// Return error only if the
// key is enabled, for state=off
// let it be empty.
return Errorf(
"'%s' is not optional for '%s' sub-system, please check '%s' documentation",
hkv.Key, subSys, subSys)
}
}
c[subSys][tgt] = currKVS
return nil
}