forked from CrunchyData/postgres-operator
-
Notifications
You must be signed in to change notification settings - Fork 0
/
pgbouncer.go
414 lines (347 loc) · 12.7 KB
/
pgbouncer.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
package cmd
/*
Copyright 2018 - 2021 Crunchy Data Solutions, 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.
*/
import (
"fmt"
"os"
"strings"
"github.com/crunchydata/postgres-operator/pgo/api"
"github.com/crunchydata/postgres-operator/pgo/util"
msgs "github.com/crunchydata/postgres-operator/pkg/apiservermsgs"
)
// showPgBouncerTextPadding contains the values for what the text padding should be
type showPgBouncerTextPadding struct {
ClusterName int
ClusterIP int
ExternalIP int
Password int
ServiceName int
Username int
}
// updatePgBouncerTextPadding contains the values for what the text padding should be
type updatePgBouncerTextPadding struct {
ClusterName int
ErrorMessage int
Status int
}
// PgBouncerReplicas is the total number of replica pods to deploy with a
// pgBouncer Deployment
var PgBouncerReplicas int32
// PgBouncerUninstall is used to ensure the objects intalled in PostgreSQL on
// behalf of pgbouncer are either not applied (in the case of a cluster create)
// or are removed (in the case of a pgo delete pgbouncer)
var PgBouncerUninstall bool
func createPgbouncer(args []string, ns string) {
if Selector == "" && len(args) == 0 {
fmt.Println("Error: The --selector flag is required.")
return
}
request := msgs.CreatePgbouncerRequest{
Args: args,
ClientVersion: msgs.PGO_VERSION,
CPURequest: PgBouncerCPURequest,
CPULimit: PgBouncerCPULimit,
MemoryRequest: PgBouncerMemoryRequest,
MemoryLimit: PgBouncerMemoryLimit,
Namespace: ns,
Replicas: PgBouncerReplicas,
Selector: Selector,
}
if err := util.ValidateQuantity(request.CPURequest, "cpu"); err != nil {
fmt.Println(err)
os.Exit(1)
}
if err := util.ValidateQuantity(request.CPULimit, "cpu-limit"); err != nil {
fmt.Println(err)
os.Exit(1)
}
if err := util.ValidateQuantity(request.MemoryRequest, "memory"); err != nil {
fmt.Println(err)
os.Exit(1)
}
if err := util.ValidateQuantity(request.MemoryLimit, "memory-limit"); err != nil {
fmt.Println(err)
os.Exit(1)
}
response, err := api.CreatePgbouncer(httpclient, &SessionCredentials, &request)
if err != nil {
fmt.Println("Error: " + err.Error())
os.Exit(1)
}
// this is slightly rewritten from the legacy method
if response.Status.Code != msgs.Ok {
fmt.Println("Error: " + response.Status.Msg)
for _, v := range response.Results {
fmt.Println(v)
}
os.Exit(1)
}
for _, v := range response.Results {
fmt.Println(v)
}
}
func deletePgbouncer(args []string, ns string) {
if Selector == "" && len(args) == 0 {
fmt.Println("Error: The --selector flag or a cluster name is required.")
return
}
// set up the API request
request := msgs.DeletePgbouncerRequest{
Args: args,
ClientVersion: msgs.PGO_VERSION,
Selector: Selector,
Namespace: ns,
Uninstall: PgBouncerUninstall,
}
response, err := api.DeletePgbouncer(httpclient, &SessionCredentials, &request)
if err != nil {
fmt.Println("Error: " + err.Error())
os.Exit(2)
}
if response.Status.Code == msgs.Ok {
for _, v := range response.Results {
fmt.Println(v)
}
} else {
fmt.Println("Error: " + response.Status.Msg)
os.Exit(2)
}
}
// makeShowPgBouncerInterface returns an interface slice of the available values
// in show pgbouncer
func makeShowPgBouncerInterface(values []msgs.ShowPgBouncerDetail) []interface{} {
// iterate through the list of values to make the interface
showPgBouncerInterface := make([]interface{}, len(values))
for i, value := range values {
showPgBouncerInterface[i] = value
}
return showPgBouncerInterface
}
// makeUpdatePgBouncerInterface returns an interface slice of the available values
// in show pgbouncer
func makeUpdatePgBouncerInterface(values []msgs.UpdatePgBouncerDetail) []interface{} {
// iterate through the list of values to make the interface
updatePgBouncerInterface := make([]interface{}, len(values))
for i, value := range values {
updatePgBouncerInterface[i] = value
}
return updatePgBouncerInterface
}
// printShowPgBouncerText prints out the information around each PostgreSQL
// cluster's pgBouncer
// printShowPgBouncerText renders a text response
func printShowPgBouncerText(response msgs.ShowPgBouncerResponse) {
// if the request errored, return the message here and exit with an error
if response.Status.Code != msgs.Ok {
fmt.Println("Error: " + response.Status.Msg)
os.Exit(1)
}
// if no results returned, return an error
if len(response.Results) == 0 {
fmt.Println("Nothing found.")
return
}
// make the interface for the pgbouncer clusters
showPgBouncerInterface := makeShowPgBouncerInterface(response.Results)
// format the header
// start by setting up the different text paddings
padding := showPgBouncerTextPadding{
ClusterName: getMaxLength(showPgBouncerInterface, headingCluster, "ClusterName"),
ClusterIP: getMaxLength(showPgBouncerInterface, headingClusterIP, "ServiceClusterIP"),
ExternalIP: getMaxLength(showPgBouncerInterface, headingExternalIP, "ServiceExternalIP"),
ServiceName: getMaxLength(showPgBouncerInterface, headingService, "ServiceName"),
Password: getMaxLength(showPgBouncerInterface, headingPassword, "Password"),
Username: getMaxLength(showPgBouncerInterface, headingUsername, "Username"),
}
printShowPgBouncerTextHeader(padding)
// iterate through the reuslts and print them out
for _, result := range response.Results {
printShowPgBouncerTextRow(result, padding)
}
}
// printShowPgBouncerTextHeader prints out the header
func printShowPgBouncerTextHeader(padding showPgBouncerTextPadding) {
// print the header
fmt.Println("")
fmt.Printf("%s", util.Rpad(headingCluster, " ", padding.ClusterName))
fmt.Printf("%s", util.Rpad(headingService, " ", padding.ServiceName))
fmt.Printf("%s", util.Rpad(headingUsername, " ", padding.Username))
fmt.Printf("%s", util.Rpad(headingPassword, " ", padding.Password))
fmt.Printf("%s", util.Rpad(headingClusterIP, " ", padding.ClusterIP))
fmt.Printf("%s", util.Rpad(headingExternalIP, " ", padding.ExternalIP))
fmt.Println("")
// print the layer below the header...which prints out a bunch of "-" that's
// 1 less than the padding value
fmt.Println(
strings.Repeat("-", padding.ClusterName-1),
strings.Repeat("-", padding.ServiceName-1),
strings.Repeat("-", padding.Username-1),
strings.Repeat("-", padding.Password-1),
strings.Repeat("-", padding.ClusterIP-1),
strings.Repeat("-", padding.ExternalIP-1),
)
}
// printShowPgBouncerTextRow prints a row of the text data
func printShowPgBouncerTextRow(result msgs.ShowPgBouncerDetail, padding showPgBouncerTextPadding) {
fmt.Printf("%s", util.Rpad(result.ClusterName, " ", padding.ClusterName))
fmt.Printf("%s", util.Rpad(result.ServiceName, " ", padding.ServiceName))
fmt.Printf("%s", util.Rpad(result.Username, " ", padding.Username))
fmt.Printf("%s", util.Rpad(result.Password, " ", padding.Password))
fmt.Printf("%s", util.Rpad(result.ServiceClusterIP, " ", padding.ClusterIP))
fmt.Printf("%s", util.Rpad(result.ServiceExternalIP, " ", padding.ExternalIP))
fmt.Println("")
}
// printUpdatePgBouncerText prints out the information about how each pgBouncer
// updat efared after a request
// printShowPgBouncerText renders a text response
func printUpdatePgBouncerText(response msgs.UpdatePgBouncerResponse) {
// if the request errored, return the message here and exit with an error
if response.Status.Code != msgs.Ok {
fmt.Println("Error: " + response.Status.Msg)
os.Exit(1)
}
// if no results returned, return an error
if len(response.Results) == 0 {
fmt.Println("Nothing found.")
return
}
// make the interface for the pgbouncer clusters
updatePgBouncerInterface := makeUpdatePgBouncerInterface(response.Results)
// format the header
// start by setting up the different text paddings
padding := updatePgBouncerTextPadding{
ClusterName: getMaxLength(updatePgBouncerInterface, headingCluster, "ClusterName"),
ErrorMessage: getMaxLength(updatePgBouncerInterface, headingErrorMessage, "ErrorMessage"),
Status: len(headingStatus) + 1,
}
printUpdatePgBouncerTextHeader(padding)
// iterate through the reuslts and print them out
for _, result := range response.Results {
printUpdatePgBouncerTextRow(result, padding)
}
}
// printUpdatePgBouncerTextHeader prints out the header
func printUpdatePgBouncerTextHeader(padding updatePgBouncerTextPadding) {
// print the header
fmt.Println("")
fmt.Printf("%s", util.Rpad(headingCluster, " ", padding.ClusterName))
fmt.Printf("%s", util.Rpad(headingStatus, " ", padding.Status))
fmt.Printf("%s", util.Rpad(headingErrorMessage, " ", padding.ErrorMessage))
fmt.Println("")
// print the layer below the header...which prints out a bunch of "-" that's
// 1 less than the padding value
fmt.Println(
strings.Repeat("-", padding.ClusterName-1),
strings.Repeat("-", padding.Status-1),
strings.Repeat("-", padding.ErrorMessage-1),
)
}
// printUpdatePgBouncerTextRow prints a row of the text data
func printUpdatePgBouncerTextRow(result msgs.UpdatePgBouncerDetail, padding updatePgBouncerTextPadding) {
// set the text-based status
status := "ok"
if result.Error {
status = "error"
}
fmt.Printf("%s", util.Rpad(result.ClusterName, " ", padding.ClusterName))
fmt.Printf("%s", util.Rpad(status, " ", padding.Status))
fmt.Printf("%s", util.Rpad(result.ErrorMessage, " ", padding.ErrorMessage))
fmt.Println("")
}
// showPgBouncer prepares to make an API requests to display information about
// one or more pgBouncer deployments. "clusterNames" is an array of cluster
// names to iterate over
func showPgBouncer(namespace string, clusterNames []string) {
// first, determine if any arguments have been pass in
if len(clusterNames) == 0 && Selector == "" {
fmt.Println("Error: You must provide at least one cluster name, or use a selector with the `--selector` flag")
os.Exit(1)
}
// next prepare the request!
request := msgs.ShowPgBouncerRequest{
ClusterNames: clusterNames,
Namespace: namespace,
Selector: Selector,
}
// and make the API request!
response, err := api.ShowPgBouncer(httpclient, &SessionCredentials, request)
// if there is a bona-fide error, log and exit
if err != nil {
fmt.Println("Error:", err.Error())
os.Exit(1)
}
// great! now we can work on interpreting the results and outputting them
// per the user's desired output format
// render the next bit based on the output type
switch OutputFormat {
case "json":
printJSON(response)
default:
printShowPgBouncerText(response)
}
}
// updatePgBouncer prepares to make an API requests to update information about
// a pgBouncer deployment in a cluster
// one or more pgBouncer deployments. "clusterNames" is an array of cluster
// names to iterate over
func updatePgBouncer(namespace string, clusterNames []string) {
// first, determine if any arguments have been pass in
if len(clusterNames) == 0 && Selector == "" {
fmt.Println("Error: You must provide at least one cluster name, or use a selector with the `--selector` flag")
os.Exit(1)
}
// next prepare the request!
request := msgs.UpdatePgBouncerRequest{
ClusterNames: clusterNames,
CPURequest: PgBouncerCPURequest,
CPULimit: PgBouncerCPULimit,
MemoryRequest: PgBouncerMemoryRequest,
MemoryLimit: PgBouncerMemoryLimit,
Namespace: namespace,
Replicas: PgBouncerReplicas,
RotatePassword: RotatePassword,
Selector: Selector,
}
if err := util.ValidateQuantity(request.CPURequest, "cpu"); err != nil {
fmt.Println(err)
os.Exit(1)
}
if err := util.ValidateQuantity(request.CPULimit, "cpu-limit"); err != nil {
fmt.Println(err)
os.Exit(1)
}
if err := util.ValidateQuantity(request.MemoryRequest, "memory"); err != nil {
fmt.Println(err)
os.Exit(1)
}
if err := util.ValidateQuantity(request.MemoryLimit, "memory-limit"); err != nil {
fmt.Println(err)
os.Exit(1)
}
// and make the API request!
response, err := api.UpdatePgBouncer(httpclient, &SessionCredentials, request)
// if there is a bona-fide error, log and exit
if err != nil {
fmt.Println("Error:", err.Error())
os.Exit(1)
}
// great! now we can work on interpreting the results and outputting them
// per the user's desired output format
// render the next bit based on the output type
switch OutputFormat {
case "json":
printJSON(response)
default:
printUpdatePgBouncerText(response)
}
}