| /* |
| * 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.rocketmq.tieredstore.provider; |
| |
| import org.apache.rocketmq.tieredstore.provider.inputstream.TieredFileSegmentInputStream; |
| |
| import java.nio.ByteBuffer; |
| import java.util.concurrent.CompletableFuture; |
| |
| public interface TieredStoreProvider { |
| /** |
| * Get file path in backend file system |
| * |
| * @return file real path |
| */ |
| String getPath(); |
| |
| /** |
| * Get file size in backend file system |
| * |
| * @return file real size |
| */ |
| long getSize(); |
| |
| /** |
| * Is file exists in backend file system |
| * |
| * @return <code>true</code> if file with given path exists; <code>false</code> otherwise |
| */ |
| boolean exists(); |
| |
| /** |
| * Create file in backend file system |
| */ |
| void createFile(); |
| |
| /** |
| * Destroy file with given path in backend file system |
| */ |
| void destroyFile(); |
| |
| /** |
| * Get data from backend file system |
| * |
| * @param position the index from where the file will be read |
| * @param length the data size will be read |
| * @return data to be read |
| */ |
| CompletableFuture<ByteBuffer> read0(long position, int length); |
| |
| /** |
| * Put data to backend file system |
| * |
| * @param inputStream data stream |
| * @param position backend file position to put, used in append mode |
| * @param length data size in stream |
| * @param append try to append or create a new file |
| * @return put result, <code>true</code> if data successfully write; <code>false</code> otherwise |
| */ |
| CompletableFuture<Boolean> commit0(TieredFileSegmentInputStream inputStream, |
| long position, int length, boolean append); |
| } |