Michael McGuinness
72 lines
1.7 KiB
Go
72 lines
1.7 KiB
Go
package migrations
|
|
|
|
import (
|
|
"context"
|
|
"database/sql"
|
|
"fmt"
|
|
"log/slog"
|
|
"path"
|
|
|
|
"queryorchestration/internal/serviceconfig"
|
|
"queryorchestration/internal/serviceconfig/database"
|
|
|
|
"github.com/golang-migrate/migrate/v4"
|
|
_ "github.com/golang-migrate/migrate/v4/database/postgres"
|
|
_ "github.com/golang-migrate/migrate/v4/source/file"
|
|
_ "github.com/lib/pq"
|
|
)
|
|
|
|
func createDB(cfg database.ConfigProvider) error {
|
|
connStr := fmt.Sprintf("%s?%s", cfg.GetDBBaseURI(), cfg.GetDBOptsString())
|
|
|
|
db, err := sql.Open(cfg.GetDBDriver(), connStr)
|
|
if err != nil {
|
|
return fmt.Errorf("error opening database: %v", err)
|
|
}
|
|
|
|
err = db.Ping()
|
|
if err != nil {
|
|
return fmt.Errorf("error pinging database: %v", err)
|
|
}
|
|
|
|
rs, err := db.Query(fmt.Sprintf("SELECT 'CREATE DATABASE %s' WHERE NOT EXISTS (SELECT FROM pg_database WHERE datname = '%s')", cfg.GetDBName(), cfg.GetDBName()))
|
|
if err != nil {
|
|
return fmt.Errorf("error creating database: %v", err)
|
|
}
|
|
|
|
if rs.Next() {
|
|
slog.Info("database created", "name", cfg.GetDBName())
|
|
} else {
|
|
slog.Info("database already exists", "name", cfg.GetDBName())
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
func Run(ctx context.Context, cfg serviceconfig.ConfigProvider) error {
|
|
err := createDB(cfg)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
migPath := "file://" + path.Join(cfg.GetBasePath(), "database/migrations")
|
|
m, err := migrate.New(
|
|
migPath,
|
|
cfg.GetDBURI(),
|
|
)
|
|
if err != nil {
|
|
return fmt.Errorf("failed to create migrate instance: %v", err)
|
|
}
|
|
|
|
err = m.Up()
|
|
if err == migrate.ErrNoChange {
|
|
slog.Info("No migration changes required")
|
|
} else if err != nil {
|
|
return fmt.Errorf("failed to apply migrations: %v", err)
|
|
} else {
|
|
slog.Info("Migrations applied successfully!")
|
|
}
|
|
|
|
return nil
|
|
}
|