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// Copyright 2025 The casbin Authors. All Rights Reserved.
//
// 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 persist
import "context"
// TransactionalAdapter defines the interface for adapters that support transactions.
// Adapters implementing this interface can participate in Casbin transactions.
type TransactionalAdapter interface {
Adapter
// BeginTransaction starts a new transaction and returns a transaction context.
BeginTransaction(ctx context.Context) (TransactionContext, error)
}
// TransactionContext represents a database transaction context.
// It provides methods to commit or rollback the transaction and get an adapter
// that operates within this transaction.
type TransactionContext interface {
// Commit commits the transaction.
Commit() error
// Rollback rolls back the transaction.
Rollback() error
// GetAdapter returns an adapter that operates within this transaction.
GetAdapter() Adapter
}
// PolicyOperation represents a policy operation that can be buffered in a transaction.
type PolicyOperation struct {
Type OperationType // The type of operation (add, remove, update)
Section string // The section of the policy (p, g)
PolicyType string // The policy type (p, p2, g, g2, etc.)
Rules [][]string // The policy rules to operate on
OldRules [][]string // For update operations, the old rules to replace
}
// OperationType represents the type of policy operation.
type OperationType int
const (
// OperationAdd represents adding policy rules.
OperationAdd OperationType = iota
// OperationRemove represents removing policy rules.
OperationRemove
// OperationUpdate represents updating policy rules.
OperationUpdate
)
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