fix: run migration outside sql transactions

internal/storage/driver/driver.go

@@ -2,7 +2,7 @@ package driver
 
 import (
 	"context"
-	"database/sql"
+	"errors"
 	"fmt"
 	"github.com/formancehq/go-libs/v2/metadata"
 	"github.com/formancehq/go-libs/v2/platform/postgres"
@@ -35,41 +35,26 @@ type Driver struct {
 
 func (d *Driver) createLedgerStore(ctx context.Context, db bun.IDB, l *ledger.Ledger) (*ledgerstore.Store, error) {
 
-	tx, err := db.BeginTx(ctx, &sql.TxOptions{})
-	if err != nil {
-		return nil, fmt.Errorf("begin transaction: %w", err)
-	}
-
-	b := bucket.New(tx, l.Bucket)
+	b := bucket.New(d.db, l.Bucket)
 	if err := b.Migrate(ctx, d.tracer); err != nil {
 		return nil, fmt.Errorf("migrating bucket: %w", err)
 	}
 
-	ret, err := db.NewInsert().
+	_, err := db.NewInsert().
 		Model(l).
-		Ignore().
 		Returning("id, added_at").
 		Exec(ctx)
 	if err != nil {
+		if errors.Is(postgres.ResolveError(err), postgres.ErrConstraintsFailed{}) {
+			return nil, systemcontroller.ErrLedgerAlreadyExists
+		}
 		return nil, postgres.ResolveError(err)
 	}
 
-	affected, err := ret.RowsAffected()
-	if err != nil {
-		return nil, fmt.Errorf("creating ledger: %w", err)
-	}
-	if affected == 0 {
-		return nil, systemcontroller.ErrLedgerAlreadyExists
-	}
-
-	if err := b.AddLedger(ctx, *l, tx); err != nil {
+	if err := b.AddLedger(ctx, *l, d.db); err != nil {
 		return nil, fmt.Errorf("adding ledger to bucket: %w", err)
 	}
 
-	if err := tx.Commit(); err != nil {
-		return nil, fmt.Errorf("committing sql transaction to create ledger and schemas: %w", err)
-	}
-
 	return ledgerstore.New(
 		d.db,
 		b,
@@ -81,29 +66,37 @@ func (d *Driver) createLedgerStore(ctx context.Context, db bun.IDB, l *ledger.Le
 
 func (d *Driver) CreateLedger(ctx context.Context, l *ledger.Ledger) (*ledgerstore.Store, error) {
 
-	// start a transaction because we will need to create the schema and apply ledger migrations
-	tx, err := d.db.BeginTx(ctx, &sql.TxOptions{})
-	if err != nil {
-		return nil, fmt.Errorf("begin transaction: %w", err)
-	}
-	defer func() {
-		_ = tx.Rollback()
-	}()
-
 	if l.Metadata == nil {
 		l.Metadata = metadata.Metadata{}
 	}
 
-	store, err := d.createLedgerStore(ctx, tx, l)
+	b := bucket.New(d.db, l.Bucket)
+	if err := b.Migrate(ctx, d.tracer); err != nil {
+		return nil, fmt.Errorf("migrating bucket: %w", err)
+	}
+
+	_, err := d.db.NewInsert().
+		Model(l).
+		Returning("id, added_at").
+		Exec(ctx)
 	if err != nil {
-		return nil, err
+		if errors.Is(postgres.ResolveError(err), postgres.ErrConstraintsFailed{}) {
+			return nil, systemcontroller.ErrLedgerAlreadyExists
+		}
+		return nil, postgres.ResolveError(err)
 	}
 
-	if err := tx.Commit(); err != nil {
-		return nil, fmt.Errorf("committing sql transaction to create ledger schema: %w", err)
+	if err := b.AddLedger(ctx, *l, d.db); err != nil {
+		return nil, fmt.Errorf("adding ledger to bucket: %w", err)
 	}
 
-	return store, nil
+	return ledgerstore.New(
+		d.db,
+		b,
+		*l,
+		ledgerstore.WithMeter(d.meter),
+		ledgerstore.WithTracer(d.tracer),
+	), nil
 }
 
 func (d *Driver) OpenLedger(ctx context.Context, name string) (*ledgerstore.Store, *ledger.Ledger, error) {