rushlink/internal/db/migrate.go

108 lines
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2020-10-25 17:33:51 +01:00
package db
import (
"time"
gormigrate "github.com/go-gormigrate/gormigrate/v2"
"github.com/google/uuid"
"gorm.io/gorm"
)
// Gormigrate returns a Gormigrate migrator for the database.
func Gormigrate(db *gorm.DB) *gormigrate.Gormigrate {
return gormigrate.New(db, gormigrate.DefaultOptions, []*gormigrate.Migration{
{
ID: "202010251337",
Migrate: func(tx *gorm.DB) error {
type FileUpload struct {
ID uint `gorm:"primaryKey"`
State FileUploadState `gorm:"index"`
PubID uuid.UUID `gorm:"uniqueIndex"`
FileName string
ContentType string
Checksum uint32
CreatedAt time.Time
UpdatedAt time.Time
DeletedAt gorm.DeletedAt
}
type Paste struct {
ID uint `gorm:"primaryKey"`
Type PasteType `gorm:"index"`
State PasteState `gorm:"index"`
Content []byte
Key string `gorm:"uniqueIndex"`
DeleteToken string
CreatedAt time.Time
UpdatedAt time.Time
DeletedAt gorm.DeletedAt
}
return tx.AutoMigrate(&FileUpload{}, &Paste{})
},
},
{
ID: "202107231722",
Migrate: func(tx *gorm.DB) error {
// Update the schema
type FileUpload struct {
ID uint `gorm:"primaryKey"`
State FileUploadState `gorm:"index"`
PubID uuid.UUID `gorm:"uniqueIndex"`
PasteID uint
FileName string
ContentType string
Checksum uint32
CreatedAt time.Time
UpdatedAt time.Time
DeletedAt gorm.DeletedAt
}
type Paste struct {
ID uint `gorm:"primaryKey"`
Type PasteType `gorm:"index"`
State PasteState `gorm:"index"`
Content []byte
URL string
FileUpload *FileUpload
Key string `gorm:"uniqueIndex"`
DeleteToken string
CreatedAt time.Time
UpdatedAt time.Time
DeletedAt gorm.DeletedAt
}
err := tx.AutoMigrate(&FileUpload{}, &Paste{})
if err != nil {
return err
}
// Migrate the data
pastes := make([]Paste, 0)
if err := tx.Model(&Paste{}).Find(&pastes).Error; err != nil {
return err
}
for _, p := range pastes {
switch p.Type {
case PasteTypeRedirect:
p.URL = string(p.Content)
tx.Model(p).Select("Content", "URL").Updates(p)
case PasteTypeFileUpload:
var id uuid.UUID
var fus []FileUpload
copy(id[:], p.Content)
if err := db.Unscoped().Limit(1).Where("pub_id = ?", id).Find(&fus).Error; err != nil {
return err
}
p.FileUpload = &fus[0]
tx.Model(p).Select("Content", "FileUpload").Updates(p)
default:
continue
}
}
// Currently there is a bug in GORM, which causes a nil ptr
// dereference when you try dropping a column in an sqlite3
// database.
return nil
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},
},
})
}