/
migrations.go
77 lines (64 loc) · 2.01 KB
/
migrations.go
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//
// Copyright 2023 The GUAC Authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package backend
import (
"context"
"database/sql"
"fmt"
"entgo.io/ent/dialect"
"github.com/guacsec/guac/pkg/assembler/backends/ent"
"github.com/guacsec/guac/pkg/assembler/backends/ent/migrate"
"github.com/guacsec/guac/pkg/logging"
dialectsql "entgo.io/ent/dialect/sql"
)
type BackendOptions struct {
DriverName string
Address string
Debug bool
AutoMigrate bool
}
// SetupBackend sets up the ent backend, preparing the database and returning a client
func SetupBackend(ctx context.Context, options *BackendOptions) (*ent.Client, error) {
logger := logging.FromContext(ctx)
driver := dialect.Postgres
if options.DriverName != "" {
driver = options.DriverName
}
if driver != dialect.Postgres {
// TODO: Passively import preferred driver packages for MySQL and Sqlite
return nil, fmt.Errorf("only postgres is supported at this time")
}
db, err := sql.Open(driver, options.Address)
if err != nil {
return nil, fmt.Errorf("error opening db: %w", err)
}
client := ent.NewClient(ent.Driver(dialectsql.OpenDB(driver, db)))
if options.AutoMigrate {
// Run db migrations
err = client.Schema.Create(
ctx,
migrate.WithGlobalUniqueID(true),
migrate.WithDropIndex(true),
migrate.WithDropColumn(true),
)
if err != nil {
return nil, fmt.Errorf("error creating ent schema: %w", err)
}
logger.Infof("ent migrations complete")
} else {
logger.Infof("skipping ent migrations")
}
return client, nil
}