forked from hashicorp/terraform
-
Notifications
You must be signed in to change notification settings - Fork 2
/
resource_circonus_check_consul.go
412 lines (354 loc) · 13.9 KB
/
resource_circonus_check_consul.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
package circonus
import (
"fmt"
"net"
"net/url"
"regexp"
"strings"
"github.com/circonus-labs/circonus-gometrics/api/config"
"github.com/hashicorp/errwrap"
"github.com/hashicorp/terraform/helper/schema"
)
const (
// circonus_check.consul.* resource attribute names
checkConsulACLTokenAttr = "acl_token"
checkConsulAllowStaleAttr = "allow_stale"
checkConsulCAChainAttr = "ca_chain"
checkConsulCertFileAttr = "certificate_file"
checkConsulCheckNameBlacklistAttr = "check_blacklist"
checkConsulCiphersAttr = "ciphers"
checkConsulDatacenterAttr = "dc"
checkConsulHTTPAddrAttr = "http_addr"
checkConsulHeadersAttr = "headers"
checkConsulKeyFileAttr = "key_file"
checkConsulNodeAttr = "node"
checkConsulNodeBlacklistAttr = "node_blacklist"
checkConsulServiceAttr = "service"
checkConsulServiceNameBlacklistAttr = "service_blacklist"
checkConsulStateAttr = "state"
)
var checkConsulDescriptions = attrDescrs{
checkConsulACLTokenAttr: "A Consul ACL token",
checkConsulAllowStaleAttr: "Allow Consul to read from a non-leader system",
checkConsulCAChainAttr: "A path to a file containing all the certificate authorities that should be loaded to validate the remote certificate (for TLS checks)",
checkConsulCertFileAttr: "A path to a file containing the client certificate that will be presented to the remote server (for TLS-enabled checks)",
checkConsulCheckNameBlacklistAttr: "A blacklist of check names to exclude from metric results",
checkConsulCiphersAttr: "A list of ciphers to be used in the TLS protocol (for HTTPS checks)",
checkConsulDatacenterAttr: "The Consul datacenter to extract health information from",
checkConsulHeadersAttr: "Map of HTTP Headers to send along with HTTP Requests",
checkConsulHTTPAddrAttr: "The HTTP Address of a Consul agent to query",
checkConsulKeyFileAttr: "A path to a file containing key to be used in conjunction with the cilent certificate (for TLS checks)",
checkConsulNodeAttr: "Node Name or NodeID of a Consul agent",
checkConsulNodeBlacklistAttr: "A blacklist of node names or IDs to exclude from metric results",
checkConsulServiceAttr: "Name of the Consul service to check",
checkConsulServiceNameBlacklistAttr: "A blacklist of service names to exclude from metric results",
checkConsulStateAttr: "Check for Consul services in this particular state",
}
var consulHealthCheckRE = regexp.MustCompile(fmt.Sprintf(`^%s/(%s|%s|%s)/(.+)`, checkConsulV1Prefix, checkConsulV1NodePrefix, checkConsulV1ServicePrefix, checkConsulV1StatePrefix))
var schemaCheckConsul = &schema.Schema{
Type: schema.TypeList,
Optional: true,
MaxItems: 1,
Elem: &schema.Resource{
Schema: convertToHelperSchema(checkConsulDescriptions, map[schemaAttr]*schema.Schema{
checkConsulACLTokenAttr: &schema.Schema{
Type: schema.TypeString,
Optional: true,
ValidateFunc: validateRegexp(checkConsulACLTokenAttr, `^[a-zA-Z0-9\-]+$`),
},
checkConsulAllowStaleAttr: &schema.Schema{
Type: schema.TypeBool,
Optional: true,
Default: true,
},
checkConsulCAChainAttr: &schema.Schema{
Type: schema.TypeString,
Optional: true,
ValidateFunc: validateRegexp(checkConsulCAChainAttr, `.+`),
},
checkConsulCertFileAttr: &schema.Schema{
Type: schema.TypeString,
Optional: true,
ValidateFunc: validateRegexp(checkConsulCertFileAttr, `.+`),
},
checkConsulCheckNameBlacklistAttr: &schema.Schema{
Type: schema.TypeList,
Optional: true,
Elem: &schema.Schema{
Type: schema.TypeString,
ValidateFunc: validateRegexp(checkConsulCheckNameBlacklistAttr, `^[A-Za-z0-9_-]+$`),
},
},
checkConsulCiphersAttr: &schema.Schema{
Type: schema.TypeString,
Optional: true,
ValidateFunc: validateRegexp(checkConsulCiphersAttr, `.+`),
},
checkConsulDatacenterAttr: &schema.Schema{
Type: schema.TypeString,
Optional: true,
ValidateFunc: validateRegexp(checkConsulCertFileAttr, `^[a-zA-Z0-9]+$`),
},
checkConsulHTTPAddrAttr: &schema.Schema{
Type: schema.TypeString,
Optional: true,
Default: defaultCheckConsulHTTPAddr,
ValidateFunc: validateHTTPURL(checkConsulHTTPAddrAttr, urlIsAbs|urlWithoutPath),
},
checkConsulHeadersAttr: &schema.Schema{
Type: schema.TypeMap,
Elem: schema.TypeString,
Optional: true,
ValidateFunc: validateHTTPHeaders,
},
checkConsulKeyFileAttr: &schema.Schema{
Type: schema.TypeString,
Optional: true,
ValidateFunc: validateRegexp(checkConsulKeyFileAttr, `.+`),
},
checkConsulNodeAttr: &schema.Schema{
Type: schema.TypeString,
Optional: true,
ValidateFunc: validateRegexp(checkConsulNodeAttr, `^[a-zA-Z0-9_\-]+$`),
ConflictsWith: []string{
checkConsulAttr + "." + checkConsulServiceAttr,
checkConsulAttr + "." + checkConsulStateAttr,
},
},
checkConsulNodeBlacklistAttr: &schema.Schema{
Type: schema.TypeList,
Optional: true,
Elem: &schema.Schema{
Type: schema.TypeString,
ValidateFunc: validateRegexp(checkConsulNodeBlacklistAttr, `^[A-Za-z0-9_-]+$`),
},
},
checkConsulServiceAttr: &schema.Schema{
Type: schema.TypeString,
Optional: true,
ValidateFunc: validateRegexp(checkConsulServiceAttr, `^[a-zA-Z0-9_\-]+$`),
ConflictsWith: []string{
checkConsulAttr + "." + checkConsulNodeAttr,
checkConsulAttr + "." + checkConsulStateAttr,
},
},
checkConsulServiceNameBlacklistAttr: &schema.Schema{
Type: schema.TypeList,
Optional: true,
Elem: &schema.Schema{
Type: schema.TypeString,
ValidateFunc: validateRegexp(checkConsulServiceNameBlacklistAttr, `^[A-Za-z0-9_-]+$`),
},
},
checkConsulStateAttr: &schema.Schema{
Type: schema.TypeString,
Optional: true,
ValidateFunc: validateRegexp(checkConsulStateAttr, `^(any|passing|warning|critical)$`),
ConflictsWith: []string{
checkConsulAttr + "." + checkConsulNodeAttr,
checkConsulAttr + "." + checkConsulServiceAttr,
},
},
}),
},
}
// checkAPIToStateConsul reads the Config data out of circonusCheck.CheckBundle into
// the statefile.
func checkAPIToStateConsul(c *circonusCheck, d *schema.ResourceData) error {
consulConfig := make(map[string]interface{}, len(c.Config))
// swamp is a sanity check: it must be empty by the time this method returns
swamp := make(map[config.Key]string, len(c.Config))
for k, s := range c.Config {
swamp[k] = s
}
saveStringConfigToState := func(apiKey config.Key, attrName schemaAttr) {
if s, ok := c.Config[apiKey]; ok && s != "" {
consulConfig[string(attrName)] = s
}
delete(swamp, apiKey)
}
saveStringConfigToState(config.CAChain, checkConsulCAChainAttr)
saveStringConfigToState(config.CertFile, checkConsulCertFileAttr)
saveStringConfigToState(config.Ciphers, checkConsulCiphersAttr)
// httpAddrURL is used to compose the http_addr value using multiple c.Config
// values.
var httpAddrURL url.URL
headers := make(map[string]interface{}, len(c.Config)+1) // +1 is for the ACLToken
headerPrefixLen := len(config.HeaderPrefix)
// Explicitly handle several config parameters in sequence: URL, then port,
// then everything else.
if v, found := c.Config[config.URL]; found {
u, err := url.Parse(v)
if err != nil {
return errwrap.Wrapf(fmt.Sprintf("unable to parse %q from config: {{err}}", config.URL), err)
}
queryArgs := u.Query()
if vals, found := queryArgs[apiConsulStaleAttr]; found && len(vals) > 0 {
consulConfig[string(checkConsulAllowStaleAttr)] = true
}
if dc := queryArgs.Get(apiConsulDatacenterAttr); dc != "" {
consulConfig[string(checkConsulDatacenterAttr)] = dc
}
httpAddrURL.Host = u.Host
httpAddrURL.Scheme = u.Scheme
md := consulHealthCheckRE.FindStringSubmatch(u.EscapedPath())
if md == nil {
return fmt.Errorf("config %q failed to match the health regexp", config.URL)
}
checkMode := md[1]
checkArg := md[2]
switch checkMode {
case checkConsulV1NodePrefix:
consulConfig[string(checkConsulNodeAttr)] = checkArg
case checkConsulV1ServicePrefix:
consulConfig[string(checkConsulServiceAttr)] = checkArg
case checkConsulV1StatePrefix:
consulConfig[string(checkConsulStateAttr)] = checkArg
default:
return fmt.Errorf("PROVIDER BUG: unsupported check mode %q from %q", checkMode, u.EscapedPath())
}
delete(swamp, config.URL)
}
if v, found := c.Config[config.Port]; found {
hostInfo := strings.SplitN(httpAddrURL.Host, ":", 2)
switch {
case len(hostInfo) == 1 && v != defaultCheckConsulPort, len(hostInfo) > 1:
httpAddrURL.Host = net.JoinHostPort(hostInfo[0], v)
}
delete(swamp, config.Port)
}
if v, found := c.Config[apiConsulCheckBlacklist]; found {
consulConfig[checkConsulCheckNameBlacklistAttr] = strings.Split(v, ",")
}
if v, found := c.Config[apiConsulNodeBlacklist]; found {
consulConfig[checkConsulNodeBlacklistAttr] = strings.Split(v, ",")
}
if v, found := c.Config[apiConsulServiceBlacklist]; found {
consulConfig[checkConsulServiceNameBlacklistAttr] = strings.Split(v, ",")
}
// NOTE(sean@): headers attribute processed last. See below.
consulConfig[string(checkConsulHTTPAddrAttr)] = httpAddrURL.String()
saveStringConfigToState(config.KeyFile, checkConsulKeyFileAttr)
// Process the headers last in order to provide an escape hatch capible of
// overriding any other derived value above.
for k, v := range c.Config {
if len(k) <= headerPrefixLen {
continue
}
// Handle all of the prefix variable headers, like `header_`
if strings.Compare(string(k[:headerPrefixLen]), string(config.HeaderPrefix)) == 0 {
key := k[headerPrefixLen:]
switch key {
case checkConsulTokenHeader:
consulConfig[checkConsulACLTokenAttr] = v
default:
headers[string(key)] = v
}
}
delete(swamp, k)
}
consulConfig[string(checkConsulHeadersAttr)] = headers
whitelistedConfigKeys := map[config.Key]struct{}{
config.Port: struct{}{},
config.ReverseSecretKey: struct{}{},
config.SubmissionURL: struct{}{},
config.URL: struct{}{},
}
for k := range swamp {
if _, ok := whitelistedConfigKeys[k]; ok {
delete(c.Config, k)
}
if _, ok := whitelistedConfigKeys[k]; !ok {
return fmt.Errorf("PROVIDER BUG: API Config not empty: %#v", swamp)
}
}
if err := d.Set(checkConsulAttr, []interface{}{consulConfig}); err != nil {
return errwrap.Wrapf(fmt.Sprintf("Unable to store check %q attribute: {{err}}", checkConsulAttr), err)
}
return nil
}
func checkConfigToAPIConsul(c *circonusCheck, l interfaceList) error {
c.Type = string(apiCheckTypeConsul)
// Iterate over all `consul` attributes, even though we have a max of 1 in the
// schema.
for _, mapRaw := range l {
consulConfig := newInterfaceMap(mapRaw)
if v, found := consulConfig[checkConsulCAChainAttr]; found {
c.Config[config.CAChain] = v.(string)
}
if v, found := consulConfig[checkConsulCertFileAttr]; found {
c.Config[config.CertFile] = v.(string)
}
if v, found := consulConfig[checkConsulCheckNameBlacklistAttr]; found {
listRaw := v.([]interface{})
checks := make([]string, 0, len(listRaw))
for _, v := range listRaw {
checks = append(checks, v.(string))
}
c.Config[apiConsulCheckBlacklist] = strings.Join(checks, ",")
}
if v, found := consulConfig[checkConsulCiphersAttr]; found {
c.Config[config.Ciphers] = v.(string)
}
if headers := consulConfig.CollectMap(checkConsulHeadersAttr); headers != nil {
for k, v := range headers {
h := config.HeaderPrefix + config.Key(k)
c.Config[h] = v
}
}
if v, found := consulConfig[checkConsulKeyFileAttr]; found {
c.Config[config.KeyFile] = v.(string)
}
{
// Extract all of the input attributes necessary to construct the
// Consul agent's URL.
httpAddr := consulConfig[checkConsulHTTPAddrAttr].(string)
checkURL, err := url.Parse(httpAddr)
if err != nil {
return errwrap.Wrapf(fmt.Sprintf("Unable to parse %s's attribute %q: {{err}}", checkConsulAttr, httpAddr), err)
}
hostInfo := strings.SplitN(checkURL.Host, ":", 2)
if len(c.Target) == 0 {
c.Target = hostInfo[0]
}
if len(hostInfo) > 1 {
c.Config[config.Port] = hostInfo[1]
}
if v, found := consulConfig[checkConsulNodeAttr]; found && v.(string) != "" {
checkURL.Path = strings.Join([]string{checkConsulV1Prefix, checkConsulV1NodePrefix, v.(string)}, "/")
}
if v, found := consulConfig[checkConsulServiceAttr]; found && v.(string) != "" {
checkURL.Path = strings.Join([]string{checkConsulV1Prefix, checkConsulV1ServicePrefix, v.(string)}, "/")
}
if v, found := consulConfig[checkConsulStateAttr]; found && v.(string) != "" {
checkURL.Path = strings.Join([]string{checkConsulV1Prefix, checkConsulV1StatePrefix, v.(string)}, "/")
}
q := checkURL.Query()
if v, found := consulConfig[checkConsulAllowStaleAttr]; found && v.(bool) {
q.Set(apiConsulStaleAttr, "")
}
if v, found := consulConfig[checkConsulDatacenterAttr]; found && v.(string) != "" {
q.Set(apiConsulDatacenterAttr, v.(string))
}
checkURL.RawQuery = q.Encode()
c.Config[config.URL] = checkURL.String()
}
if v, found := consulConfig[checkConsulNodeBlacklistAttr]; found {
listRaw := v.([]interface{})
checks := make([]string, 0, len(listRaw))
for _, v := range listRaw {
checks = append(checks, v.(string))
}
c.Config[apiConsulNodeBlacklist] = strings.Join(checks, ",")
}
if v, found := consulConfig[checkConsulServiceNameBlacklistAttr]; found {
listRaw := v.([]interface{})
checks := make([]string, 0, len(listRaw))
for _, v := range listRaw {
checks = append(checks, v.(string))
}
c.Config[apiConsulServiceBlacklist] = strings.Join(checks, ",")
}
}
return nil
}