/
migration.go
77 lines (66 loc) · 2.01 KB
/
migration.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
package rethinkdb
import (
"log"
"strings"
r "github.com/dancannon/gorethink"
)
type Migrator interface {
CreateDb(client *r.Session, dbName string) error
DropDb(client *r.Session, dbName string) error
CreateTable(tableName string) error
DropTable(tableName string) error
AddIndex(tableName string, fields []string, opts map[string]interface{}) error
}
type RethinkDbMigration struct {
Migrator
}
func (*RethinkDbMigration) CreateDb(client *r.Session, dbName string) error {
if _, err := r.DBCreate(dbName).Run(client); err != nil {
//log.Fatalln(err.Error())
log.Println(err.Error())
return err
}
return nil
}
func (*RethinkDbMigration) DropDb(client *r.Session, dbName string) error {
if _, err := r.DBDrop(dbName).Run(client); err != nil {
log.Println(err.Error())
return err
}
return nil
}
func (ar *RethinkDbMigration) CreateTable(client *r.Session, dbName string, tableName string) error {
if _, err := r.DB(dbName).TableCreate(tableName).RunWrite(client); err != nil {
log.Println(err.Error())
return err
}
return nil
}
func (ar *RethinkDbMigration) DropTable(client *r.Session, dbName string, tableName string) error {
if _, err := r.DB(dbName).TableDrop(tableName).RunWrite(client); err != nil {
log.Println(err.Error())
return err
}
return nil
}
func (ar *RethinkDbMigration) AddIndex(client *r.Session, dbName string, tableName string, fields []string, opts map[string]interface{}) error {
if len(fields) == 1 {
if _, err := r.DB(dbName).Table(tableName).IndexCreate(fields[0], r.IndexCreateOpts{Multi: true}).Run(client); err != nil {
log.Println(err.Error())
return err
}
} else {
indexName := strings.Join(fields, "_")
if _, err := r.DB(dbName).Table(tableName).IndexCreateFunc(indexName, func(row r.Term) interface{} {
fieldSlice := []r.Term{}
for _, element := range fields {
fieldSlice = append(fieldSlice, row.Field(element))
}
return []interface{}{fieldSlice}
}).RunWrite(client); err != nil {
log.Println(err.Error())
return err
}
}
return nil
}