134 lines
2.7 KiB
Go
134 lines
2.7 KiB
Go
package repository
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import (
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"database/sql"
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"embed"
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"fmt"
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"log/slog"
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"github.com/golang-migrate/migrate/v4"
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"github.com/golang-migrate/migrate/v4/database/sqlite3"
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"github.com/golang-migrate/migrate/v4/source/iofs"
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)
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const Version uint = 1
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//go:embed migrations/*
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var migrationFiles embed.FS
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func checkDBVersion(db *sql.DB) error {
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var m *migrate.Migrate
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driver, err := sqlite3.WithInstance(db, &sqlite3.Config{})
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if err != nil {
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return err
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}
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d, err := iofs.New(migrationFiles, "migrations")
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if err != nil {
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return err
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}
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m, err = migrate.NewWithInstance("iofs", d, "sqlite3", driver)
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if err != nil {
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return err
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}
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v, dirty, err := m.Version()
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if err != nil {
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if err == migrate.ErrNilVersion {
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slog.Error("Legacy database without version or missing database file!")
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} else {
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return err
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}
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}
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if v < Version {
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return fmt.Errorf("unsupported database version %d, need %d.\nPlease backup your database file and run server -migrate-db", v, Version)
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} else if v > Version {
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return fmt.Errorf("unsupported database version %d, need %d.\nPlease refer to documentation how to downgrade db with external migrate tool", v, Version)
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}
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if dirty {
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return fmt.Errorf("last migration to version %d has failed, please fix the db manually and force version with -force-db flag", Version)
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}
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return nil
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}
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func getMigrateInstance(dsnURI string) (m *migrate.Migrate, err error) {
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d, err := iofs.New(migrationFiles, "migrations")
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if err != nil {
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slog.Error("failed to get instance", "Error", err)
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}
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m, err = migrate.NewWithSourceInstance("iofs", d, "sqlite3://"+dsnURI)
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if err != nil {
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return m, err
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}
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return m, nil
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}
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func MigrateDB(db string) error {
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m, err := getMigrateInstance(db)
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if err != nil {
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return err
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}
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_, dirty, err := m.Version()
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if err != nil {
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if err == migrate.ErrNilVersion {
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slog.Warn("Legacy database without version or missing database file!")
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} else {
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return err
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}
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}
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if dirty {
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return fmt.Errorf("last migration to version %d has failed, please fix the db manually and force version with -force-db flag", Version)
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}
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if err := m.Up(); err != nil {
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if err == migrate.ErrNoChange {
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slog.Info("DB already up to date!")
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} else {
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return err
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}
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}
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m.Close()
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return nil
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}
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func RevertDB(db string) error {
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m, err := getMigrateInstance(db)
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if err != nil {
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return err
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}
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if err := m.Migrate(Version - 1); err != nil {
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if err == migrate.ErrNoChange {
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slog.Info("DB already up to date!")
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} else {
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return err
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}
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}
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m.Close()
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return nil
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}
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func ForceDB(db string) error {
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m, err := getMigrateInstance(db)
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if err != nil {
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return err
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}
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if err := m.Force(int(Version)); err != nil {
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return err
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}
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m.Close()
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return nil
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}
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