| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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 org.apache.bookkeeper.meta; |
| |
| import java.io.IOException; |
| |
| /** |
| * Layout manager for writing/reading/deleting ledger layout. |
| */ |
| public interface LayoutManager { |
| |
| /** |
| * The Ledger layout exists exception. |
| */ |
| class LedgerLayoutExistsException extends IOException { |
| |
| public LedgerLayoutExistsException(String message) { |
| super(message); |
| } |
| |
| public LedgerLayoutExistsException(String message, Throwable cause) { |
| super(message, cause); |
| } |
| |
| public LedgerLayoutExistsException(Throwable cause) { |
| super(cause); |
| } |
| } |
| |
| /** |
| * Return the ledger layout. |
| * |
| * @return the ledger layout |
| * @throws IOException when fail to read ledger layout. |
| */ |
| LedgerLayout readLedgerLayout() throws IOException; |
| |
| /** |
| * Store the ledger layout. |
| * |
| * @param layout ledger layout |
| * @throws IOException when fail to store ledger layout. |
| */ |
| void storeLedgerLayout(LedgerLayout layout) throws IOException; |
| |
| /** |
| * Delete ledger layout. |
| * |
| * @throws IOException |
| */ |
| void deleteLedgerLayout() throws IOException; |
| |
| } |