forked from hashicorp/terraform
-
Notifications
You must be signed in to change notification settings - Fork 0
/
resource_postgresql_database.go
466 lines (394 loc) · 12.3 KB
/
resource_postgresql_database.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
package postgresql
import (
"bytes"
"database/sql"
"errors"
"fmt"
"log"
"strings"
"github.com/hashicorp/errwrap"
"github.com/hashicorp/terraform/helper/schema"
"github.com/lib/pq"
)
const (
dbAllowConnsAttr = "allow_connections"
dbCTypeAttr = "lc_ctype"
dbCollationAttr = "lc_collate"
dbConnLimitAttr = "connection_limit"
dbEncodingAttr = "encoding"
dbIsTemplateAttr = "is_template"
dbNameAttr = "name"
dbOwnerAttr = "owner"
dbTablespaceAttr = "tablespace_name"
dbTemplateAttr = "template"
)
func resourcePostgreSQLDatabase() *schema.Resource {
return &schema.Resource{
Create: resourcePostgreSQLDatabaseCreate,
Read: resourcePostgreSQLDatabaseRead,
Update: resourcePostgreSQLDatabaseUpdate,
Delete: resourcePostgreSQLDatabaseDelete,
Exists: resourcePostgreSQLDatabaseExists,
Importer: &schema.ResourceImporter{
State: schema.ImportStatePassthrough,
},
Schema: map[string]*schema.Schema{
dbNameAttr: {
Type: schema.TypeString,
Required: true,
Description: "The PostgreSQL database name to connect to",
},
dbOwnerAttr: {
Type: schema.TypeString,
Optional: true,
Computed: true,
Description: "The ROLE which owns the database",
},
dbTemplateAttr: {
Type: schema.TypeString,
Optional: true,
ForceNew: true,
Computed: true,
Description: "The name of the template from which to create the new database",
},
dbEncodingAttr: {
Type: schema.TypeString,
Optional: true,
Computed: true,
ForceNew: true,
Description: "Character set encoding to use in the new database",
},
dbCollationAttr: {
Type: schema.TypeString,
Optional: true,
Computed: true,
ForceNew: true,
Description: "Collation order (LC_COLLATE) to use in the new database",
},
dbCTypeAttr: {
Type: schema.TypeString,
Optional: true,
Computed: true,
ForceNew: true,
Description: "Character classification (LC_CTYPE) to use in the new database",
},
dbTablespaceAttr: {
Type: schema.TypeString,
Optional: true,
Computed: true,
Description: "The name of the tablespace that will be associated with the new database",
},
dbConnLimitAttr: {
Type: schema.TypeInt,
Optional: true,
Default: -1,
Description: "How many concurrent connections can be made to this database",
ValidateFunc: validateConnLimit,
},
dbAllowConnsAttr: {
Type: schema.TypeBool,
Optional: true,
Default: true,
Description: "If false then no one can connect to this database",
},
dbIsTemplateAttr: {
Type: schema.TypeBool,
Optional: true,
Computed: true,
Description: "If true, then this database can be cloned by any user with CREATEDB privileges",
},
},
}
}
func resourcePostgreSQLDatabaseCreate(d *schema.ResourceData, meta interface{}) error {
c := meta.(*Client)
c.catalogLock.Lock()
defer c.catalogLock.Unlock()
conn, err := c.Connect()
if err != nil {
return errwrap.Wrapf("Error connecting to PostgreSQL: {{err}}", err)
}
defer conn.Close()
dbName := d.Get(dbNameAttr).(string)
b := bytes.NewBufferString("CREATE DATABASE ")
fmt.Fprint(b, pq.QuoteIdentifier(dbName))
// Handle each option individually and stream results into the query
// buffer.
switch v, ok := d.GetOk(dbOwnerAttr); {
case ok:
fmt.Fprint(b, " OWNER ", pq.QuoteIdentifier(v.(string)))
default:
// No owner specified in the config, default to using
// the connecting username.
fmt.Fprint(b, " OWNER ", pq.QuoteIdentifier(c.username))
}
switch v, ok := d.GetOk(dbTemplateAttr); {
case ok:
fmt.Fprint(b, " TEMPLATE ", pq.QuoteIdentifier(v.(string)))
case v.(string) == "", strings.ToUpper(v.(string)) != "DEFAULT":
fmt.Fprint(b, " TEMPLATE template0")
}
switch v, ok := d.GetOk(dbEncodingAttr); {
case ok:
fmt.Fprint(b, " ENCODING ", pq.QuoteIdentifier(v.(string)))
case v.(string) == "", strings.ToUpper(v.(string)) != "DEFAULT":
fmt.Fprint(b, ` ENCODING "UTF8"`)
}
switch v, ok := d.GetOk(dbCollationAttr); {
case ok:
fmt.Fprint(b, " LC_COLLATE ", pq.QuoteIdentifier(v.(string)))
case v.(string) == "", strings.ToUpper(v.(string)) != "DEFAULT":
fmt.Fprint(b, ` LC_COLLATE "C"`)
}
switch v, ok := d.GetOk(dbCTypeAttr); {
case ok:
fmt.Fprint(b, " LC_CTYPE ", pq.QuoteIdentifier(v.(string)))
case v.(string) == "", strings.ToUpper(v.(string)) != "DEFAULT":
fmt.Fprint(b, ` LC_CTYPE "C"`)
}
if v, ok := d.GetOk(dbTablespaceAttr); ok {
fmt.Fprint(b, " TABLESPACE ", pq.QuoteIdentifier(v.(string)))
}
{
val := d.Get(dbAllowConnsAttr).(bool)
fmt.Fprint(b, " ALLOW_CONNECTIONS ", val)
}
{
val := d.Get(dbConnLimitAttr).(int)
fmt.Fprint(b, " CONNECTION LIMIT ", val)
}
{
val := d.Get(dbIsTemplateAttr).(bool)
fmt.Fprint(b, " IS_TEMPLATE ", val)
}
query := b.String()
_, err = conn.Query(query)
if err != nil {
return errwrap.Wrapf(fmt.Sprintf("Error creating database %s: {{err}}", dbName), err)
}
d.SetId(dbName)
return resourcePostgreSQLDatabaseReadImpl(d, meta)
}
func resourcePostgreSQLDatabaseDelete(d *schema.ResourceData, meta interface{}) error {
c := meta.(*Client)
c.catalogLock.Lock()
defer c.catalogLock.Unlock()
conn, err := c.Connect()
if err != nil {
return errwrap.Wrapf("Error connecting to PostgreSQL: {{err}}", err)
}
defer conn.Close()
dbName := d.Get(dbNameAttr).(string)
if isTemplate := d.Get(dbIsTemplateAttr).(bool); isTemplate {
// Template databases must have this attribute cleared before
// they can be dropped.
if err := doSetDBIsTemplate(conn, dbName, false); err != nil {
return errwrap.Wrapf("Error updating database IS_TEMPLATE during DROP DATABASE: {{err}}", err)
}
}
if err := setDBIsTemplate(conn, d); err != nil {
return err
}
query := fmt.Sprintf("DROP DATABASE %s", pq.QuoteIdentifier(dbName))
_, err = conn.Query(query)
if err != nil {
return errwrap.Wrapf("Error dropping database: {{err}}", err)
}
d.SetId("")
return nil
}
func resourcePostgreSQLDatabaseExists(d *schema.ResourceData, meta interface{}) (bool, error) {
c := meta.(*Client)
c.catalogLock.RLock()
defer c.catalogLock.RUnlock()
conn, err := c.Connect()
if err != nil {
return false, err
}
defer conn.Close()
var dbName string
err = conn.QueryRow("SELECT d.datname from pg_database d WHERE datname=$1", d.Id()).Scan(&dbName)
switch {
case err == sql.ErrNoRows:
return false, nil
case err != nil:
return false, err
}
return true, nil
}
func resourcePostgreSQLDatabaseRead(d *schema.ResourceData, meta interface{}) error {
c := meta.(*Client)
c.catalogLock.RLock()
defer c.catalogLock.RUnlock()
return resourcePostgreSQLDatabaseReadImpl(d, meta)
}
func resourcePostgreSQLDatabaseReadImpl(d *schema.ResourceData, meta interface{}) error {
c := meta.(*Client)
conn, err := c.Connect()
if err != nil {
return err
}
defer conn.Close()
dbId := d.Id()
var dbName, ownerName string
err = conn.QueryRow("SELECT d.datname, pg_catalog.pg_get_userbyid(d.datdba) from pg_database d WHERE datname=$1", dbId).Scan(&dbName, &ownerName)
switch {
case err == sql.ErrNoRows:
log.Printf("[WARN] PostgreSQL database (%s) not found", dbId)
d.SetId("")
return nil
case err != nil:
return errwrap.Wrapf("Error reading database: {{err}}", err)
}
var dbEncoding, dbCollation, dbCType, dbTablespaceName string
var dbConnLimit int
var dbAllowConns, dbIsTemplate bool
err = conn.QueryRow(`SELECT pg_catalog.pg_encoding_to_char(d.encoding), d.datcollate, d.datctype, ts.spcname, d.datconnlimit, d.datallowconn, d.datistemplate FROM pg_catalog.pg_database AS d, pg_catalog.pg_tablespace AS ts WHERE d.datname = $1 AND d.dattablespace = ts.oid`, dbId).
Scan(
&dbEncoding, &dbCollation, &dbCType, &dbTablespaceName,
&dbConnLimit, &dbAllowConns, &dbIsTemplate,
)
switch {
case err == sql.ErrNoRows:
log.Printf("[WARN] PostgreSQL database (%s) not found", dbId)
d.SetId("")
return nil
case err != nil:
return errwrap.Wrapf("Error reading database: {{err}}", err)
default:
d.Set(dbNameAttr, dbName)
d.Set(dbOwnerAttr, ownerName)
d.Set(dbEncodingAttr, dbEncoding)
d.Set(dbCollationAttr, dbCollation)
d.Set(dbCTypeAttr, dbCType)
d.Set(dbTablespaceAttr, dbTablespaceName)
d.Set(dbConnLimitAttr, dbConnLimit)
d.Set(dbAllowConnsAttr, dbAllowConns)
d.Set(dbIsTemplateAttr, dbIsTemplate)
dbTemplate := d.Get(dbTemplateAttr).(string)
if dbTemplate == "" {
dbTemplate = "template0"
}
d.Set(dbTemplateAttr, dbTemplate)
return nil
}
}
func resourcePostgreSQLDatabaseUpdate(d *schema.ResourceData, meta interface{}) error {
c := meta.(*Client)
c.catalogLock.Lock()
defer c.catalogLock.Unlock()
conn, err := c.Connect()
if err != nil {
return err
}
defer conn.Close()
if err := setDBName(conn, d); err != nil {
return err
}
if err := setDBOwner(conn, d); err != nil {
return err
}
if err := setDBTablespace(conn, d); err != nil {
return err
}
if err := setDBConnLimit(conn, d); err != nil {
return err
}
if err := setDBAllowConns(conn, d); err != nil {
return err
}
if err := setDBIsTemplate(conn, d); err != nil {
return err
}
// Empty values: ALTER DATABASE name RESET configuration_parameter;
return resourcePostgreSQLDatabaseReadImpl(d, meta)
}
func setDBName(conn *sql.DB, d *schema.ResourceData) error {
if !d.HasChange(dbNameAttr) {
return nil
}
oraw, nraw := d.GetChange(dbNameAttr)
o := oraw.(string)
n := nraw.(string)
if n == "" {
return errors.New("Error setting database name to an empty string")
}
query := fmt.Sprintf("ALTER DATABASE %s RENAME TO %s", pq.QuoteIdentifier(o), pq.QuoteIdentifier(n))
if _, err := conn.Query(query); err != nil {
return errwrap.Wrapf("Error updating database name: {{err}}", err)
}
d.SetId(n)
return nil
}
func setDBOwner(conn *sql.DB, d *schema.ResourceData) error {
if !d.HasChange(dbOwnerAttr) {
return nil
}
owner := d.Get(dbOwnerAttr).(string)
if owner == "" {
return nil
}
dbName := d.Get(dbNameAttr).(string)
query := fmt.Sprintf("ALTER DATABASE %s OWNER TO %s", pq.QuoteIdentifier(dbName), pq.QuoteIdentifier(owner))
if _, err := conn.Query(query); err != nil {
return errwrap.Wrapf("Error updating database OWNER: {{err}}", err)
}
return nil
}
func setDBTablespace(conn *sql.DB, d *schema.ResourceData) error {
if !d.HasChange(dbTablespaceAttr) {
return nil
}
tbspName := d.Get(dbTablespaceAttr).(string)
dbName := d.Get(dbNameAttr).(string)
var query string
if tbspName == "" || strings.ToUpper(tbspName) == "DEFAULT" {
query = fmt.Sprintf("ALTER DATABASE %s RESET TABLESPACE", pq.QuoteIdentifier(dbName))
} else {
query = fmt.Sprintf("ALTER DATABASE %s SET TABLESPACE %s", pq.QuoteIdentifier(dbName), pq.QuoteIdentifier(tbspName))
}
if _, err := conn.Query(query); err != nil {
return errwrap.Wrapf("Error updating database TABLESPACE: {{err}}", err)
}
return nil
}
func setDBConnLimit(conn *sql.DB, d *schema.ResourceData) error {
if !d.HasChange(dbConnLimitAttr) {
return nil
}
connLimit := d.Get(dbConnLimitAttr).(int)
dbName := d.Get(dbNameAttr).(string)
query := fmt.Sprintf("ALTER DATABASE %s CONNECTION LIMIT = %d", pq.QuoteIdentifier(dbName), connLimit)
if _, err := conn.Query(query); err != nil {
return errwrap.Wrapf("Error updating database CONNECTION LIMIT: {{err}}", err)
}
return nil
}
func setDBAllowConns(conn *sql.DB, d *schema.ResourceData) error {
if !d.HasChange(dbAllowConnsAttr) {
return nil
}
allowConns := d.Get(dbAllowConnsAttr).(bool)
dbName := d.Get(dbNameAttr).(string)
query := fmt.Sprintf("ALTER DATABASE %s ALLOW_CONNECTIONS %t", pq.QuoteIdentifier(dbName), allowConns)
if _, err := conn.Query(query); err != nil {
return errwrap.Wrapf("Error updating database ALLOW_CONNECTIONS: {{err}}", err)
}
return nil
}
func setDBIsTemplate(conn *sql.DB, d *schema.ResourceData) error {
if !d.HasChange(dbIsTemplateAttr) {
return nil
}
if err := doSetDBIsTemplate(conn, d.Get(dbNameAttr).(string), d.Get(dbIsTemplateAttr).(bool)); err != nil {
return errwrap.Wrapf("Error updating database IS_TEMPLATE: {{err}}", err)
}
return nil
}
func doSetDBIsTemplate(conn *sql.DB, dbName string, isTemplate bool) error {
query := fmt.Sprintf("ALTER DATABASE %s IS_TEMPLATE %t", pq.QuoteIdentifier(dbName), isTemplate)
if _, err := conn.Query(query); err != nil {
return errwrap.Wrapf("Error updating database IS_TEMPLATE: {{err}}", err)
}
return nil
}