forked from hashicorp/consul
-
Notifications
You must be signed in to change notification settings - Fork 1
/
config.go
1087 lines (947 loc) · 32.4 KB
/
config.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
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
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
package agent
import (
"encoding/base64"
"encoding/json"
"fmt"
"io"
"net"
"os"
"path/filepath"
"sort"
"strings"
"time"
"github.com/hashicorp/consul/consul"
"github.com/hashicorp/consul/watch"
"github.com/mitchellh/mapstructure"
)
// Ports is used to simplify the configuration by
// providing default ports, and allowing the addresses
// to only be specified once
type PortConfig struct {
DNS int // DNS Query interface
HTTP int // HTTP API
HTTPS int // HTTPS API
RPC int // CLI RPC
SerfLan int `mapstructure:"serf_lan"` // LAN gossip (Client + Server)
SerfWan int `mapstructure:"serf_wan"` // WAN gossip (Server onlyg)
Server int // Server internal RPC
}
// AddressConfig is used to provide address overrides
// for specific services. By default, either ClientAddress
// or ServerAddress is used.
type AddressConfig struct {
DNS string // DNS Query interface
HTTP string // HTTP API
HTTPS string // HTTPS API
RPC string // CLI RPC
}
// DNSConfig is used to fine tune the DNS sub-system.
// It can be used to control cache values, and stale
// reads
type DNSConfig struct {
// NodeTTL provides the TTL value for a node query
NodeTTL time.Duration `mapstructure:"-"`
NodeTTLRaw string `mapstructure:"node_ttl" json:"-"`
// ServiceTTL provides the TTL value for a service
// query for given service. The "*" wildcard can be used
// to set a default for all services.
ServiceTTL map[string]time.Duration `mapstructure:"-"`
ServiceTTLRaw map[string]string `mapstructure:"service_ttl" json:"-"`
// AllowStale is used to enable lookups with stale
// data. This gives horizontal read scalability since
// any Consul server can service the query instead of
// only the leader.
AllowStale bool `mapstructure:"allow_stale"`
// EnableTruncate is used to enable setting the truncate
// flag for UDP DNS queries. This allows unmodified
// clients to re-query the consul server using TCP
// when the total number of records exceeds the number
// returned by default for UDP.
EnableTruncate bool `mapstructure:"enable_truncate"`
// MaxStale is used to bound how stale of a result is
// accepted for a DNS lookup. This can be used with
// AllowStale to limit how old of a value is served up.
// If the stale result exceeds this, another non-stale
// stale read is performed.
MaxStale time.Duration `mapstructure:"-"`
MaxStaleRaw string `mapstructure:"max_stale" json:"-"`
// OnlyPassing is used to determine whether to filter nodes
// whose health checks are in any non-passing state. By
// default, only nodes in a critical state are excluded.
OnlyPassing bool `mapstructure:"only_passing"`
}
// Config is the configuration that can be set for an Agent.
// Some of this is configurable as CLI flags, but most must
// be set using a configuration file.
type Config struct {
// Bootstrap is used to bring up the first Consul server, and
// permits that node to elect itself leader
Bootstrap bool `mapstructure:"bootstrap"`
// BootstrapExpect tries to automatically bootstrap the Consul cluster,
// by witholding peers until enough servers join.
BootstrapExpect int `mapstructure:"bootstrap_expect"`
// Server controls if this agent acts like a Consul server,
// or merely as a client. Servers have more state, take part
// in leader election, etc.
Server bool `mapstructure:"server"`
// Datacenter is the datacenter this node is in. Defaults to dc1
Datacenter string `mapstructure:"datacenter"`
// DataDir is the directory to store our state in
DataDir string `mapstructure:"data_dir"`
// DNSRecursors can be set to allow the DNS servers to recursively
// resolve non-consul domains. It is deprecated, and merges into the
// recursors array.
DNSRecursor string `mapstructure:"recursor"`
// DNSRecursors can be set to allow the DNS servers to recursively
// resolve non-consul domains
DNSRecursors []string `mapstructure:"recursors"`
// DNS configuration
DNSConfig DNSConfig `mapstructure:"dns_config"`
// Domain is the DNS domain for the records. Defaults to "consul."
Domain string `mapstructure:"domain"`
// Encryption key to use for the Serf communication
EncryptKey string `mapstructure:"encrypt" json:"-"`
// LogLevel is the level of the logs to putout
LogLevel string `mapstructure:"log_level"`
// Node name is the name we use to advertise. Defaults to hostname.
NodeName string `mapstructure:"node_name"`
// ClientAddr is used to control the address we bind to for
// client services (DNS, HTTP, HTTPS, RPC)
ClientAddr string `mapstructure:"client_addr"`
// BindAddr is used to control the address we bind to.
// If not specified, the first private IP we find is used.
// This controls the address we use for cluster facing
// services (Gossip, Server RPC)
BindAddr string `mapstructure:"bind_addr"`
// AdvertiseAddr is the address we use for advertising our Serf,
// and Consul RPC IP. If not specified, bind address is used.
AdvertiseAddr string `mapstructure:"advertise_addr"`
// Port configurations
Ports PortConfig
// Address configurations
Addresses AddressConfig
// LeaveOnTerm controls if Serf does a graceful leave when receiving
// the TERM signal. Defaults false. This can be changed on reload.
LeaveOnTerm bool `mapstructure:"leave_on_terminate"`
// SkipLeaveOnInt controls if Serf skips a graceful leave when receiving
// the INT signal. Defaults false. This can be changed on reload.
SkipLeaveOnInt bool `mapstructure:"skip_leave_on_interrupt"`
// StatsiteAddr is the address of a statsite instance. If provided,
// metrics will be streamed to that instance.
StatsiteAddr string `mapstructure:"statsite_addr"`
// StatsdAddr is the address of a statsd instance. If provided,
// metrics will be sent to that instance.
StatsdAddr string `mapstructure:"statsd_addr"`
// Protocol is the Consul protocol version to use.
Protocol int `mapstructure:"protocol"`
// EnableDebug is used to enable various debugging features
EnableDebug bool `mapstructure:"enable_debug"`
// VerifyIncoming is used to verify the authenticity of incoming connections.
// This means that TCP requests are forbidden, only allowing for TLS. TLS connections
// must match a provided certificate authority. This can be used to force client auth.
VerifyIncoming bool `mapstructure:"verify_incoming"`
// VerifyOutgoing is used to verify the authenticity of outgoing connections.
// This means that TLS requests are used. TLS connections must match a provided
// certificate authority. This is used to verify authenticity of server nodes.
VerifyOutgoing bool `mapstructure:"verify_outgoing"`
// CAFile is a path to a certificate authority file. This is used with VerifyIncoming
// or VerifyOutgoing to verify the TLS connection.
CAFile string `mapstructure:"ca_file"`
// CertFile is used to provide a TLS certificate that is used for serving TLS connections.
// Must be provided to serve TLS connections.
CertFile string `mapstructure:"cert_file"`
// KeyFile is used to provide a TLS key that is used for serving TLS connections.
// Must be provided to serve TLS connections.
KeyFile string `mapstructure:"key_file"`
// ServerName is used with the TLS certificates to ensure the name we
// provid ematches the certificate
ServerName string `mapstructure:"server_name"`
// StartJoin is a list of addresses to attempt to join when the
// agent starts. If Serf is unable to communicate with any of these
// addresses, then the agent will error and exit.
StartJoin []string `mapstructure:"start_join"`
// StartJoinWan is a list of addresses to attempt to join -wan when the
// agent starts. If Serf is unable to communicate with any of these
// addresses, then the agent will error and exit.
StartJoinWan []string `mapstructure:"start_join_wan"`
// RetryJoin is a list of addresses to join with retry enabled.
RetryJoin []string `mapstructure:"retry_join"`
// RetryMaxAttempts specifies the maximum number of times to retry joining a
// host on startup. This is useful for cases where we know the node will be
// online eventually.
RetryMaxAttempts int `mapstructure:"retry_max"`
// RetryInterval specifies the amount of time to wait in between join
// attempts on agent start. The minimum allowed value is 1 second and
// the default is 30s.
RetryInterval time.Duration `mapstructure:"-" json:"-"`
RetryIntervalRaw string `mapstructure:"retry_interval"`
// RetryJoinWan is a list of addresses to join -wan with retry enabled.
RetryJoinWan []string `mapstructure:"retry_join_wan"`
// RetryMaxAttemptsWan specifies the maximum number of times to retry joining a
// -wan host on startup. This is useful for cases where we know the node will be
// online eventually.
RetryMaxAttemptsWan int `mapstructure:"retry_max_wan"`
// RetryIntervalWan specifies the amount of time to wait in between join
// -wan attempts on agent start. The minimum allowed value is 1 second and
// the default is 30s.
RetryIntervalWan time.Duration `mapstructure:"-" json:"-"`
RetryIntervalWanRaw string `mapstructure:"retry_interval_wan"`
// UiDir is the directory containing the Web UI resources.
// If provided, the UI endpoints will be enabled.
UiDir string `mapstructure:"ui_dir"`
// PidFile is the file to store our PID in
PidFile string `mapstructure:"pid_file"`
// EnableSyslog is used to also tee all the logs over to syslog. Only supported
// on linux and OSX. Other platforms will generate an error.
EnableSyslog bool `mapstructure:"enable_syslog"`
// SyslogFacility is used to control where the syslog messages go
// By default, goes to LOCAL0
SyslogFacility string `mapstructure:"syslog_facility"`
// RejoinAfterLeave controls our interaction with the cluster after leave.
// When set to false (default), a leave causes Consul to not rejoin
// the cluster until an explicit join is received. If this is set to
// true, we ignore the leave, and rejoin the cluster on start.
RejoinAfterLeave bool `mapstructure:"rejoin_after_leave"`
// CheckUpdateInterval controls the interval on which the output of a health check
// is updated if there is no change to the state. For example, a check in a steady
// state may run every 5 second generating a unique output (timestamp, etc), forcing
// constant writes. This allows Consul to defer the write for some period of time,
// reducing the write pressure when the state is steady.
CheckUpdateInterval time.Duration `mapstructure:"-"`
CheckUpdateIntervalRaw string `mapstructure:"check_update_interval" json:"-"`
// ACLToken is the default token used to make requests if a per-request
// token is not provided. If not configured the 'anonymous' token is used.
ACLToken string `mapstructure:"acl_token" json:"-"`
// ACLMasterToken is used to bootstrap the ACL system. It should be specified
// on the servers in the ACLDatacenter. When the leader comes online, it ensures
// that the Master token is available. This provides the initial token.
ACLMasterToken string `mapstructure:"acl_master_token" json:"-"`
// ACLDatacenter is the central datacenter that holds authoritative
// ACL records. This must be the same for the entire cluster.
// If this is not set, ACLs are not enabled. Off by default.
ACLDatacenter string `mapstructure:"acl_datacenter"`
// ACLTTL is used to control the time-to-live of cached ACLs . This has
// a major impact on performance. By default, it is set to 30 seconds.
ACLTTL time.Duration `mapstructure:"-"`
ACLTTLRaw string `mapstructure:"acl_ttl"`
// ACLDefaultPolicy is used to control the ACL interaction when
// there is no defined policy. This can be "allow" which means
// ACLs are used to black-list, or "deny" which means ACLs are
// white-lists.
ACLDefaultPolicy string `mapstructure:"acl_default_policy"`
// ACLDownPolicy is used to control the ACL interaction when we cannot
// reach the ACLDatacenter and the token is not in the cache.
// There are two modes:
// * deny - Deny all requests
// * extend-cache - Ignore the cache expiration, and allow cached
// ACL's to be used to service requests. This
// is the default. If the ACL is not in the cache,
// this acts like deny.
ACLDownPolicy string `mapstructure:"acl_down_policy"`
// Watches are used to monitor various endpoints and to invoke a
// handler to act appropriately. These are managed entirely in the
// agent layer using the standard APIs.
Watches []map[string]interface{} `mapstructure:"watches"`
// DisableRemoteExec is used to turn off the remote execution
// feature. This is for security to prevent unknown scripts from running.
DisableRemoteExec bool `mapstructure:"disable_remote_exec"`
// DisableUpdateCheck is used to turn off the automatic update and
// security bulletin checking.
DisableUpdateCheck bool `mapstructure:"disable_update_check"`
// DisableAnonymousSignature is used to turn off the anonymous signature
// send with the update check. This is used to deduplicate messages.
DisableAnonymousSignature bool `mapstructure:"disable_anonymous_signature"`
// HTTPAPIResponseHeaders are used to add HTTP header response fields to the HTTP API responses.
HTTPAPIResponseHeaders map[string]string `mapstructure:"http_api_response_headers"`
// AtlasInfrastructure is the name of the infrastructure we belong to. e.g. hashicorp/stage
AtlasInfrastructure string `mapstructure:"atlas_infrastructure"`
// AtlasToken is our authentication token from Atlas
AtlasToken string `mapstructure:"atlas_token" json:"-"`
// AtlasACLToken is applied to inbound requests if no other token
// is provided. This takes higher precedence than the ACLToken.
// Without this, the ACLToken is used. If that is not specified either,
// then the 'anonymous' token is used. This can be set to 'anonymous'
// to reduce the Atlas privileges to below that of the ACLToken.
AtlasACLToken string `mapstructure:"atlas_acl_token" json:"-"`
// AtlasJoin controls if Atlas will attempt to auto-join the node
// to it's cluster. Requires Atlas integration.
AtlasJoin bool `mapstructure:"atlas_join"`
// AEInterval controls the anti-entropy interval. This is how often
// the agent attempts to reconcile it's local state with the server'
// representation of our state. Defaults to every 60s.
AEInterval time.Duration `mapstructure:"-" json:"-"`
// Checks holds the provided check definitions
Checks []*CheckDefinition `mapstructure:"-" json:"-"`
// Services holds the provided service definitions
Services []*ServiceDefinition `mapstructure:"-" json:"-"`
// ConsulConfig can either be provided or a default one created
ConsulConfig *consul.Config `mapstructure:"-" json:"-"`
// Revision is the GitCommit this maps to
Revision string `mapstructure:"-"`
// Version is the release version number
Version string `mapstructure:"-"`
// VersionPrerelease is a label for pre-release builds
VersionPrerelease string `mapstructure:"-"`
// WatchPlans contains the compiled watches
WatchPlans []*watch.WatchPlan `mapstructure:"-" json:"-"`
// UnixSockets is a map of socket configuration data
UnixSockets UnixSocketConfig `mapstructure:"unix_sockets"`
}
// UnixSocketPermissions contains information about a unix socket, and
// implements the FilePermissions interface.
type UnixSocketPermissions struct {
Usr string `mapstructure:"user"`
Grp string `mapstructure:"group"`
Perms string `mapstructure:"mode"`
}
func (u UnixSocketPermissions) User() string {
return u.Usr
}
func (u UnixSocketPermissions) Group() string {
return u.Grp
}
func (u UnixSocketPermissions) Mode() string {
return u.Perms
}
// UnixSocketConfig stores information about various unix sockets which
// Consul creates and uses for communication.
type UnixSocketConfig struct {
UnixSocketPermissions `mapstructure:",squash"`
}
// unixSocketAddr tests if a given address describes a domain socket,
// and returns the relevant path part of the string if it is.
func unixSocketAddr(addr string) (string, bool) {
if !strings.HasPrefix(addr, "unix://") {
return "", false
}
return strings.TrimPrefix(addr, "unix://"), true
}
type dirEnts []os.FileInfo
// DefaultConfig is used to return a sane default configuration
func DefaultConfig() *Config {
return &Config{
Bootstrap: false,
BootstrapExpect: 0,
Server: false,
Datacenter: consul.DefaultDC,
Domain: "consul.",
LogLevel: "INFO",
ClientAddr: "127.0.0.1",
BindAddr: "0.0.0.0",
Ports: PortConfig{
DNS: 8600,
HTTP: 8500,
HTTPS: -1,
RPC: 8400,
SerfLan: consul.DefaultLANSerfPort,
SerfWan: consul.DefaultWANSerfPort,
Server: 8300,
},
DNSConfig: DNSConfig{
MaxStale: 5 * time.Second,
},
SyslogFacility: "LOCAL0",
Protocol: consul.ProtocolVersionMax,
CheckUpdateInterval: 5 * time.Minute,
AEInterval: time.Minute,
ACLTTL: 30 * time.Second,
ACLDownPolicy: "extend-cache",
ACLDefaultPolicy: "allow",
RetryInterval: 30 * time.Second,
RetryIntervalWan: 30 * time.Second,
}
}
// EncryptBytes returns the encryption key configured.
func (c *Config) EncryptBytes() ([]byte, error) {
return base64.StdEncoding.DecodeString(c.EncryptKey)
}
// ClientListener is used to format a listener for a
// port on a ClientAddr
func (c *Config) ClientListener(override string, port int) (net.Addr, error) {
var addr string
if override != "" {
addr = override
} else {
addr = c.ClientAddr
}
if path, ok := unixSocketAddr(addr); ok {
return &net.UnixAddr{Name: path, Net: "unix"}, nil
}
ip := net.ParseIP(addr)
if ip == nil {
return nil, fmt.Errorf("Failed to parse IP: %v", addr)
}
return &net.TCPAddr{IP: ip, Port: port}, nil
}
// DecodeConfig reads the configuration from the given reader in JSON
// format and decodes it into a proper Config structure.
func DecodeConfig(r io.Reader) (*Config, error) {
var raw interface{}
var result Config
dec := json.NewDecoder(r)
if err := dec.Decode(&raw); err != nil {
return nil, err
}
// Check the result type
if obj, ok := raw.(map[string]interface{}); ok {
// Check for a "services", "service" or "check" key, meaning
// this is actually a definition entry
if sub, ok := obj["services"]; ok {
if list, ok := sub.([]interface{}); ok {
for _, srv := range list {
service, err := DecodeServiceDefinition(srv)
if err != nil {
return nil, err
}
result.Services = append(result.Services, service)
}
}
}
if sub, ok := obj["service"]; ok {
service, err := DecodeServiceDefinition(sub)
if err != nil {
return nil, err
}
result.Services = append(result.Services, service)
}
if sub, ok := obj["checks"]; ok {
if list, ok := sub.([]interface{}); ok {
for _, chk := range list {
check, err := DecodeCheckDefinition(chk)
if err != nil {
return nil, err
}
result.Checks = append(result.Checks, check)
}
}
}
if sub, ok := obj["check"]; ok {
check, err := DecodeCheckDefinition(sub)
if err != nil {
return nil, err
}
result.Checks = append(result.Checks, check)
}
}
// Decode
var md mapstructure.Metadata
msdec, err := mapstructure.NewDecoder(&mapstructure.DecoderConfig{
Metadata: &md,
Result: &result,
})
if err != nil {
return nil, err
}
if err := msdec.Decode(raw); err != nil {
return nil, err
}
// Check unused fields and verify that no bad configuration options were
// passed to Consul. There are a few additional fields which don't directly
// use mapstructure decoding, so we need to account for those as well.
allowedKeys := []string{"service", "services", "check", "checks"}
var unused []string
for _, field := range md.Unused {
if !strContains(allowedKeys, field) {
unused = append(unused, field)
}
}
if len(unused) > 0 {
return nil, fmt.Errorf("Config has invalid keys: %s", strings.Join(unused, ","))
}
// Handle time conversions
if raw := result.DNSConfig.NodeTTLRaw; raw != "" {
dur, err := time.ParseDuration(raw)
if err != nil {
return nil, fmt.Errorf("NodeTTL invalid: %v", err)
}
result.DNSConfig.NodeTTL = dur
}
if raw := result.DNSConfig.MaxStaleRaw; raw != "" {
dur, err := time.ParseDuration(raw)
if err != nil {
return nil, fmt.Errorf("MaxStale invalid: %v", err)
}
result.DNSConfig.MaxStale = dur
}
if len(result.DNSConfig.ServiceTTLRaw) != 0 {
if result.DNSConfig.ServiceTTL == nil {
result.DNSConfig.ServiceTTL = make(map[string]time.Duration)
}
for service, raw := range result.DNSConfig.ServiceTTLRaw {
dur, err := time.ParseDuration(raw)
if err != nil {
return nil, fmt.Errorf("ServiceTTL %s invalid: %v", service, err)
}
result.DNSConfig.ServiceTTL[service] = dur
}
}
if raw := result.CheckUpdateIntervalRaw; raw != "" {
dur, err := time.ParseDuration(raw)
if err != nil {
return nil, fmt.Errorf("CheckUpdateInterval invalid: %v", err)
}
result.CheckUpdateInterval = dur
}
if raw := result.ACLTTLRaw; raw != "" {
dur, err := time.ParseDuration(raw)
if err != nil {
return nil, fmt.Errorf("ACL TTL invalid: %v", err)
}
result.ACLTTL = dur
}
if raw := result.RetryIntervalRaw; raw != "" {
dur, err := time.ParseDuration(raw)
if err != nil {
return nil, fmt.Errorf("RetryInterval invalid: %v", err)
}
result.RetryInterval = dur
}
if raw := result.RetryIntervalWanRaw; raw != "" {
dur, err := time.ParseDuration(raw)
if err != nil {
return nil, fmt.Errorf("RetryIntervalWan invalid: %v", err)
}
result.RetryIntervalWan = dur
}
// Merge the single recursor
if result.DNSRecursor != "" {
result.DNSRecursors = append(result.DNSRecursors, result.DNSRecursor)
}
return &result, nil
}
// DecodeServiceDefinition is used to decode a service definition
func DecodeServiceDefinition(raw interface{}) (*ServiceDefinition, error) {
rawMap, ok := raw.(map[string]interface{})
if !ok {
goto AFTER_FIX
}
// If no 'tags', handle the deprecated 'tag' value.
if _, ok := rawMap["tags"]; !ok {
if tag, ok := rawMap["tag"]; ok {
rawMap["tags"] = []interface{}{tag}
}
}
for k, v := range rawMap {
switch strings.ToLower(k) {
case "check":
if err := FixupCheckType(v); err != nil {
return nil, err
}
case "checks":
chkTypes, ok := v.([]interface{})
if !ok {
goto AFTER_FIX
}
for _, chkType := range chkTypes {
if err := FixupCheckType(chkType); err != nil {
return nil, err
}
}
}
}
AFTER_FIX:
var md mapstructure.Metadata
var result ServiceDefinition
msdec, err := mapstructure.NewDecoder(&mapstructure.DecoderConfig{
Metadata: &md,
Result: &result,
})
if err != nil {
return nil, err
}
if err := msdec.Decode(raw); err != nil {
return nil, err
}
return &result, nil
}
func FixupCheckType(raw interface{}) error {
var ttlKey, intervalKey, timeoutKey string
// Handle decoding of time durations
rawMap, ok := raw.(map[string]interface{})
if !ok {
return nil
}
for k, v := range rawMap {
switch strings.ToLower(k) {
case "ttl":
ttlKey = k
case "interval":
intervalKey = k
case "timeout":
timeoutKey = k
case "service_id":
rawMap["serviceid"] = v
delete(rawMap, "service_id")
}
}
if ttl, ok := rawMap[ttlKey]; ok {
ttlS, ok := ttl.(string)
if ok {
if dur, err := time.ParseDuration(ttlS); err != nil {
return err
} else {
rawMap[ttlKey] = dur
}
}
}
if interval, ok := rawMap[intervalKey]; ok {
intervalS, ok := interval.(string)
if ok {
if dur, err := time.ParseDuration(intervalS); err != nil {
return err
} else {
rawMap[intervalKey] = dur
}
}
}
if timeout, ok := rawMap[timeoutKey]; ok {
timeoutS, ok := timeout.(string)
if ok {
if dur, err := time.ParseDuration(timeoutS); err != nil {
return err
} else {
rawMap[timeoutKey] = dur
}
}
}
return nil
}
// DecodeCheckDefinition is used to decode a check definition
func DecodeCheckDefinition(raw interface{}) (*CheckDefinition, error) {
if err := FixupCheckType(raw); err != nil {
return nil, err
}
var md mapstructure.Metadata
var result CheckDefinition
msdec, err := mapstructure.NewDecoder(&mapstructure.DecoderConfig{
Metadata: &md,
Result: &result,
})
if err != nil {
return nil, err
}
if err := msdec.Decode(raw); err != nil {
return nil, err
}
return &result, nil
}
// MergeConfig merges two configurations together to make a single new
// configuration.
func MergeConfig(a, b *Config) *Config {
var result Config = *a
// Copy the strings if they're set
if b.Bootstrap {
result.Bootstrap = true
}
if b.BootstrapExpect != 0 {
result.BootstrapExpect = b.BootstrapExpect
}
if b.Datacenter != "" {
result.Datacenter = b.Datacenter
}
if b.DataDir != "" {
result.DataDir = b.DataDir
}
// Copy the dns recursors
result.DNSRecursors = make([]string, 0, len(a.DNSRecursors)+len(b.DNSRecursors))
result.DNSRecursors = append(result.DNSRecursors, a.DNSRecursors...)
result.DNSRecursors = append(result.DNSRecursors, b.DNSRecursors...)
if b.Domain != "" {
result.Domain = b.Domain
}
if b.EncryptKey != "" {
result.EncryptKey = b.EncryptKey
}
if b.LogLevel != "" {
result.LogLevel = b.LogLevel
}
if b.Protocol > 0 {
result.Protocol = b.Protocol
}
if b.NodeName != "" {
result.NodeName = b.NodeName
}
if b.ClientAddr != "" {
result.ClientAddr = b.ClientAddr
}
if b.BindAddr != "" {
result.BindAddr = b.BindAddr
}
if b.AdvertiseAddr != "" {
result.AdvertiseAddr = b.AdvertiseAddr
}
if b.Server == true {
result.Server = b.Server
}
if b.LeaveOnTerm == true {
result.LeaveOnTerm = true
}
if b.SkipLeaveOnInt == true {
result.SkipLeaveOnInt = true
}
if b.StatsiteAddr != "" {
result.StatsiteAddr = b.StatsiteAddr
}
if b.StatsdAddr != "" {
result.StatsdAddr = b.StatsdAddr
}
if b.EnableDebug {
result.EnableDebug = true
}
if b.VerifyIncoming {
result.VerifyIncoming = true
}
if b.VerifyOutgoing {
result.VerifyOutgoing = true
}
if b.CAFile != "" {
result.CAFile = b.CAFile
}
if b.CertFile != "" {
result.CertFile = b.CertFile
}
if b.KeyFile != "" {
result.KeyFile = b.KeyFile
}
if b.ServerName != "" {
result.ServerName = b.ServerName
}
if b.Checks != nil {
result.Checks = append(result.Checks, b.Checks...)
}
if b.Services != nil {
result.Services = append(result.Services, b.Services...)
}
if b.Ports.DNS != 0 {
result.Ports.DNS = b.Ports.DNS
}
if b.Ports.HTTP != 0 {
result.Ports.HTTP = b.Ports.HTTP
}
if b.Ports.HTTPS != 0 {
result.Ports.HTTPS = b.Ports.HTTPS
}
if b.Ports.RPC != 0 {
result.Ports.RPC = b.Ports.RPC
}
if b.Ports.SerfLan != 0 {
result.Ports.SerfLan = b.Ports.SerfLan
}
if b.Ports.SerfWan != 0 {
result.Ports.SerfWan = b.Ports.SerfWan
}
if b.Ports.Server != 0 {
result.Ports.Server = b.Ports.Server
}
if b.Addresses.DNS != "" {
result.Addresses.DNS = b.Addresses.DNS
}
if b.Addresses.HTTP != "" {
result.Addresses.HTTP = b.Addresses.HTTP
}
if b.Addresses.HTTPS != "" {
result.Addresses.HTTPS = b.Addresses.HTTPS
}
if b.Addresses.RPC != "" {
result.Addresses.RPC = b.Addresses.RPC
}
if b.UiDir != "" {
result.UiDir = b.UiDir
}
if b.PidFile != "" {
result.PidFile = b.PidFile
}
if b.EnableSyslog {
result.EnableSyslog = true
}
if b.RejoinAfterLeave {
result.RejoinAfterLeave = true
}
if b.RetryMaxAttempts != 0 {
result.RetryMaxAttempts = b.RetryMaxAttempts
}
if b.RetryInterval != 0 {
result.RetryInterval = b.RetryInterval
}
if b.RetryMaxAttemptsWan != 0 {
result.RetryMaxAttemptsWan = b.RetryMaxAttemptsWan
}
if b.RetryIntervalWan != 0 {
result.RetryIntervalWan = b.RetryIntervalWan
}
if b.DNSConfig.NodeTTL != 0 {
result.DNSConfig.NodeTTL = b.DNSConfig.NodeTTL
}
if len(b.DNSConfig.ServiceTTL) != 0 {
if result.DNSConfig.ServiceTTL == nil {
result.DNSConfig.ServiceTTL = make(map[string]time.Duration)
}
for service, dur := range b.DNSConfig.ServiceTTL {
result.DNSConfig.ServiceTTL[service] = dur
}
}
if b.DNSConfig.AllowStale {
result.DNSConfig.AllowStale = true
}
if b.DNSConfig.EnableTruncate {
result.DNSConfig.EnableTruncate = true
}
if b.DNSConfig.MaxStale != 0 {
result.DNSConfig.MaxStale = b.DNSConfig.MaxStale
}
if b.DNSConfig.OnlyPassing {
result.DNSConfig.OnlyPassing = true
}
if b.CheckUpdateIntervalRaw != "" || b.CheckUpdateInterval != 0 {
result.CheckUpdateInterval = b.CheckUpdateInterval
}
if b.SyslogFacility != "" {
result.SyslogFacility = b.SyslogFacility
}
if b.ACLToken != "" {
result.ACLToken = b.ACLToken
}
if b.ACLMasterToken != "" {
result.ACLMasterToken = b.ACLMasterToken
}
if b.ACLDatacenter != "" {
result.ACLDatacenter = b.ACLDatacenter
}
if b.ACLTTLRaw != "" {
result.ACLTTL = b.ACLTTL
result.ACLTTLRaw = b.ACLTTLRaw
}
if b.ACLDownPolicy != "" {
result.ACLDownPolicy = b.ACLDownPolicy
}
if b.ACLDefaultPolicy != "" {
result.ACLDefaultPolicy = b.ACLDefaultPolicy
}
if len(b.Watches) != 0 {
result.Watches = append(result.Watches, b.Watches...)
}
if len(b.WatchPlans) != 0 {
result.WatchPlans = append(result.WatchPlans, b.WatchPlans...)
}
if b.DisableRemoteExec {
result.DisableRemoteExec = true
}
if b.DisableUpdateCheck {
result.DisableUpdateCheck = true
}
if b.DisableAnonymousSignature {
result.DisableAnonymousSignature = true
}
if b.UnixSockets.Usr != "" {
result.UnixSockets.Usr = b.UnixSockets.Usr
}
if b.UnixSockets.Grp != "" {
result.UnixSockets.Grp = b.UnixSockets.Grp
}
if b.UnixSockets.Perms != "" {
result.UnixSockets.Perms = b.UnixSockets.Perms
}
if b.AtlasInfrastructure != "" {
result.AtlasInfrastructure = b.AtlasInfrastructure
}
if b.AtlasToken != "" {
result.AtlasToken = b.AtlasToken
}
if b.AtlasACLToken != "" {
result.AtlasACLToken = b.AtlasACLToken
}
if b.AtlasJoin {
result.AtlasJoin = true
}
if len(b.HTTPAPIResponseHeaders) != 0 {
if result.HTTPAPIResponseHeaders == nil {
result.HTTPAPIResponseHeaders = make(map[string]string)
}
for field, value := range b.HTTPAPIResponseHeaders {
result.HTTPAPIResponseHeaders[field] = value
}
}
// Copy the start join addresses
result.StartJoin = make([]string, 0, len(a.StartJoin)+len(b.StartJoin))
result.StartJoin = append(result.StartJoin, a.StartJoin...)
result.StartJoin = append(result.StartJoin, b.StartJoin...)
// Copy the start join addresses
result.StartJoinWan = make([]string, 0, len(a.StartJoinWan)+len(b.StartJoinWan))
result.StartJoinWan = append(result.StartJoinWan, a.StartJoinWan...)
result.StartJoinWan = append(result.StartJoinWan, b.StartJoinWan...)
// Copy the retry join addresses
result.RetryJoin = make([]string, 0, len(a.RetryJoin)+len(b.RetryJoin))
result.RetryJoin = append(result.RetryJoin, a.RetryJoin...)
result.RetryJoin = append(result.RetryJoin, b.RetryJoin...)
// Copy the retry join -wan addresses
result.RetryJoinWan = make([]string, 0, len(a.RetryJoinWan)+len(b.RetryJoinWan))
result.RetryJoinWan = append(result.RetryJoinWan, a.RetryJoinWan...)