migrations

Documentation

Index

• func CheckLatestVersion(sourceDriver source.Driver, currentVersion uint) error
• func Down(db *sql.DB) error
• func EnsureClean(db *sql.DB) error
• func Stepper(db *sql.DB) (next func() (version uint, more bool, err error), err error)
• func Up(db *sql.DB) (retErr error)

Functions

func CheckLatestVersion

func CheckLatestVersion(sourceDriver source.Driver, currentVersion uint) error

Returns nil if currentVersion corresponds to the latest available migration, otherwise an error explaining why not.

func Down

func Down(db *sql.DB) error

Down runs all down SQL migrations.

func EnsureClean

func EnsureClean(db *sql.DB) error

EnsureClean checks whether all migrations for the current version have been applied, without making any changes to the database. If not, returns a non-nil error.

func Stepper

func Stepper(db *sql.DB) (next func() (version uint, more bool, err error), err error)

Stepper returns a function that runs SQL migrations one step at a time.

Stepper cannot be closed pre-emptively, it must be run to completion (or until an error is encountered).

func Up

func Up(db *sql.DB) (retErr error)

Up runs SQL migrations to ensure the database schema is up-to-date.