| /** |
| * 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.pulsar.packages.management.storage.bookkeeper; |
| |
| import io.netty.buffer.ByteBuf; |
| import io.netty.buffer.Unpooled; |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.util.ArrayList; |
| import java.util.List; |
| import java.util.concurrent.CompletableFuture; |
| import lombok.extern.slf4j.Slf4j; |
| import org.apache.distributedlog.LogRecord; |
| import org.apache.distributedlog.api.AsyncLogWriter; |
| import org.apache.distributedlog.api.DistributedLogManager; |
| |
| /** |
| * DistributedLog Output Stream. |
| */ |
| @Slf4j |
| class DLOutputStream { |
| |
| private final DistributedLogManager distributedLogManager; |
| private final AsyncLogWriter writer; |
| private long offset = 0L; |
| |
| private DLOutputStream(DistributedLogManager distributedLogManager, AsyncLogWriter writer) { |
| this.distributedLogManager = distributedLogManager; |
| this.writer = writer; |
| } |
| |
| static CompletableFuture<DLOutputStream> openWriterAsync(DistributedLogManager distributedLogManager) { |
| log.info("Open a dlog manager"); |
| return distributedLogManager.openAsyncLogWriter().thenApply(w -> new DLOutputStream(distributedLogManager, w)); |
| } |
| |
| private CompletableFuture<List<LogRecord>> getRecords(InputStream inputStream) { |
| CompletableFuture<List<LogRecord>> future = new CompletableFuture<>(); |
| CompletableFuture.runAsync(() -> { |
| byte[] readBuffer = new byte[8192]; |
| List<LogRecord> records = new ArrayList<>(); |
| try { |
| int read = 0; |
| while ((read = inputStream.read(readBuffer)) != -1) { |
| log.info("write something into the ledgers offset: {}, length: {}", offset, read); |
| ByteBuf writeBuf = Unpooled.copiedBuffer(readBuffer, 0, read); |
| offset += writeBuf.readableBytes(); |
| LogRecord record = new LogRecord(offset, writeBuf); |
| records.add(record); |
| } |
| future.complete(records); |
| } catch (IOException e) { |
| log.error("Failed to get all records from the input stream", e); |
| future.completeExceptionally(e); |
| } |
| }); |
| return future; |
| } |
| |
| /** |
| * Write all input stream data to the distribute log. |
| * |
| * @param inputStream the data we need to write |
| * @return |
| */ |
| CompletableFuture<DLOutputStream> writeAsync(InputStream inputStream) { |
| return getRecords(inputStream) |
| .thenCompose(this::writeAsync); |
| } |
| |
| private CompletableFuture<DLOutputStream> writeAsync(List<LogRecord> records) { |
| return writer.writeBulk(records).thenApply(ignore -> this); |
| } |
| |
| /** |
| * Every package will be a stream. So we need mark the stream as EndOfStream when the stream |
| * write done. |
| * |
| * @return |
| */ |
| CompletableFuture<Void> closeAsync() { |
| return writer.markEndOfStream() |
| .thenCompose(ignore -> writer.asyncClose()) |
| .thenCompose(ignore -> distributedLogManager.asyncClose()); |
| } |
| } |
| |