mirror of https://github.com/chaitin/PandaWiki.git
81 lines
2.1 KiB
Go
81 lines
2.1 KiB
Go
package migration
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import (
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"fmt"
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"time"
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"gorm.io/gorm"
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"github.com/chaitin/panda-wiki/log"
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"github.com/chaitin/panda-wiki/store/pg"
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)
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type GoMigrationFunc interface {
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Execute(tx *gorm.DB) error
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}
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// MigrationFunc represents a migration function
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type MigrationFunc struct {
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Name string
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Fn func(*gorm.DB) error
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}
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// Migration represents a migration record in database
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type Migration struct {
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ID uint `gorm:"primaryKey"`
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Name string `gorm:"uniqueIndex"`
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ExecutedAt time.Time
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}
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// Manager handles database migrations
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type Manager struct {
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db *pg.DB
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logger *log.Logger
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MigrationFunc *MigrationFuncs
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}
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// NewManager creates a new migration manager
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func NewManager(db *pg.DB, logger *log.Logger, migrationFuncs *MigrationFuncs) (*Manager, error) {
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return &Manager{
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db: db,
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logger: logger.WithModule("migration"),
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MigrationFunc: migrationFuncs,
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}, nil
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}
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// Execute executes all pending migrations
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func (m *Manager) Execute() error {
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// Execute pending migrations
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for _, migration := range m.MigrationFunc.GetMigrationFuncs() {
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m.logger.Info("find migration", log.String("name", migration.Name))
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err := m.db.Transaction(func(tx *gorm.DB) error {
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// Double check if migration was executed
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var record Migration
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if err := tx.Where("name = ?", migration.Name).First(&record).Error; err == nil {
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// Migration was executed by another instance
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m.logger.Info("skip migration", log.String("name", migration.Name))
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return nil
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}
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// Create migration record
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if err := tx.Create(&Migration{Name: migration.Name, ExecutedAt: time.Now()}).Error; err != nil {
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return fmt.Errorf("create migration record failed: %w", err)
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}
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m.logger.Info("starting migration", log.String("name", migration.Name))
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// Execute the migration
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if err := migration.Fn(tx); err != nil {
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return fmt.Errorf("execute migration %s failed: %w", migration.Name, err)
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}
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m.logger.Info("finished migration", log.String("name", migration.Name))
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return nil
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})
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if err != nil {
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return err
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}
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}
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return nil
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}
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