forked from hashicorp/terraform
-
Notifications
You must be signed in to change notification settings - Fork 0
/
resource_database.go
174 lines (139 loc) · 4.11 KB
/
resource_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
package mysql
import (
"fmt"
"log"
"strings"
mysqlc "github.com/ziutek/mymysql/mysql"
"github.com/hashicorp/terraform/helper/schema"
)
const defaultCharacterSetKeyword = "CHARACTER SET "
const defaultCollateKeyword = "COLLATE "
func resourceDatabase() *schema.Resource {
return &schema.Resource{
Create: CreateDatabase,
Update: UpdateDatabase,
Read: ReadDatabase,
Delete: DeleteDatabase,
Schema: map[string]*schema.Schema{
"name": &schema.Schema{
Type: schema.TypeString,
Required: true,
ForceNew: true,
},
"default_character_set": &schema.Schema{
Type: schema.TypeString,
Optional: true,
Default: "utf8",
},
"default_collation": &schema.Schema{
Type: schema.TypeString,
Optional: true,
Default: "utf8_general_ci",
},
},
}
}
func CreateDatabase(d *schema.ResourceData, meta interface{}) error {
conn := meta.(mysqlc.Conn)
stmtSQL := databaseConfigSQL("CREATE", d)
log.Println("Executing statement:", stmtSQL)
_, _, err := conn.Query(stmtSQL)
if err != nil {
return err
}
d.SetId(d.Get("name").(string))
return nil
}
func UpdateDatabase(d *schema.ResourceData, meta interface{}) error {
conn := meta.(mysqlc.Conn)
stmtSQL := databaseConfigSQL("ALTER", d)
log.Println("Executing statement:", stmtSQL)
_, _, err := conn.Query(stmtSQL)
if err != nil {
return err
}
return nil
}
func ReadDatabase(d *schema.ResourceData, meta interface{}) error {
conn := meta.(mysqlc.Conn)
// This is kinda flimsy-feeling, since it depends on the formatting
// of the SHOW CREATE DATABASE output... but this data doesn't seem
// to be available any other way, so hopefully MySQL keeps this
// compatible in future releases.
name := d.Id()
stmtSQL := "SHOW CREATE DATABASE " + quoteIdentifier(name)
log.Println("Executing query:", stmtSQL)
rows, _, err := conn.Query(stmtSQL)
if err != nil {
if mysqlErr, ok := err.(*mysqlc.Error); ok {
if mysqlErr.Code == mysqlc.ER_BAD_DB_ERROR {
d.SetId("")
return nil
}
}
return err
}
row := rows[0]
createSQL := string(row[1].([]byte))
defaultCharset := extractIdentAfter(createSQL, defaultCharacterSetKeyword)
defaultCollation := extractIdentAfter(createSQL, defaultCollateKeyword)
if defaultCollation == "" && defaultCharset != "" {
// MySQL doesn't return the collation if it's the default one for
// the charset, so if we don't have a collation we need to go
// hunt for the default.
stmtSQL := "SHOW COLLATION WHERE `Charset` = '%s' AND `Default` = 'Yes'"
rows, _, err := conn.Query(stmtSQL, defaultCharset)
if err != nil {
return fmt.Errorf("Error getting default charset: %s", err)
}
if len(rows) == 0 {
return fmt.Errorf("Charset %s has no default collation", defaultCharset)
}
row := rows[0]
defaultCollation = string(row[0].([]byte))
}
d.Set("default_character_set", defaultCharset)
d.Set("default_collation", defaultCollation)
return nil
}
func DeleteDatabase(d *schema.ResourceData, meta interface{}) error {
conn := meta.(mysqlc.Conn)
name := d.Id()
stmtSQL := "DROP DATABASE " + quoteIdentifier(name)
log.Println("Executing statement:", stmtSQL)
_, _, err := conn.Query(stmtSQL)
if err == nil {
d.SetId("")
}
return err
}
func databaseConfigSQL(verb string, d *schema.ResourceData) string {
name := d.Get("name").(string)
defaultCharset := d.Get("default_character_set").(string)
defaultCollation := d.Get("default_collation").(string)
var defaultCharsetClause string
var defaultCollationClause string
if defaultCharset != "" {
defaultCharsetClause = defaultCharacterSetKeyword + quoteIdentifier(defaultCharset)
}
if defaultCollation != "" {
defaultCollationClause = defaultCollateKeyword + quoteIdentifier(defaultCollation)
}
return fmt.Sprintf(
"%s DATABASE %s %s %s",
verb,
quoteIdentifier(name),
defaultCharsetClause,
defaultCollationClause,
)
}
func extractIdentAfter(sql string, keyword string) string {
charsetIndex := strings.Index(sql, keyword)
if charsetIndex != -1 {
charsetIndex += len(keyword)
remain := sql[charsetIndex:]
spaceIndex := strings.IndexRune(remain, ' ')
return remain[:spaceIndex]
}
return ""
}