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migrations.go
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/
migrations.go
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package db
import (
"embed"
"errors"
"log/slog"
"github.com/golang-migrate/migrate/v4"
"github.com/golang-migrate/migrate/v4/database/sqlite3"
"github.com/golang-migrate/migrate/v4/source/iofs"
)
//go:embed migrations/*.sql
var migrationsFs embed.FS
func migrateSetup() (*migrate.Migrate, error) {
driver, err := sqlite3.WithInstance(
dbc, &sqlite3.Config{MigrationsTable: "migrations"})
if err != nil {
return nil, err
}
source, err := iofs.New(migrationsFs, "migrations")
if err != nil {
return nil, err
}
m, err := migrate.NewWithInstance(
"iofs",
source,
"sqlite",
driver,
)
if err != nil {
return m, err
}
return m, nil
}
func MigrateTo(version uint) error {
m, err := migrateSetup()
if err != nil {
return err
}
return m.Migrate(version)
}
func MigrateDown() error {
m, err := migrateSetup()
if err != nil {
return err
}
return m.Down()
}
func Drop() error {
m, err := migrateSetup()
if err != nil {
return err
}
return m.Drop()
}
func Migrate() error {
m, err := migrateSetup()
if err != nil {
return err
}
version, dirty, err := m.Version()
if err != nil {
if errors.Is(err, migrate.ErrNilVersion) {
slog.Error("db not versioned, performing migration")
return m.Up()
}
return err
}
slog.Debug("db migration", "version", version, "dirty", dirty)
return m.Up()
}