| /* |
| * 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.iotdb.db.storageengine.dataregion.compaction.io; |
| |
| import com.google.common.util.concurrent.RateLimiter; |
| import org.apache.tsfile.write.writer.TsFileOutput; |
| |
| import java.io.IOException; |
| import java.io.OutputStream; |
| import java.nio.ByteBuffer; |
| |
| public class CompactionTsFileOutput extends OutputStream implements TsFileOutput { |
| |
| private TsFileOutput output; |
| private RateLimiter rateLimiter; |
| private final int maxSizePerWrite; |
| |
| public CompactionTsFileOutput(TsFileOutput output, RateLimiter rateLimiter) { |
| this.output = output; |
| this.rateLimiter = rateLimiter; |
| this.maxSizePerWrite = (int) Math.min((long) rateLimiter.getRate(), Integer.MAX_VALUE); |
| } |
| |
| @Override |
| public void write(int b) throws IOException { |
| rateLimiter.acquire(1); |
| output.wrapAsStream().write(b); |
| } |
| |
| @Override |
| public void write(byte[] b) throws IOException { |
| write(b, 0, b.length); |
| } |
| |
| @Override |
| public void write(byte b) throws IOException { |
| rateLimiter.acquire(1); |
| output.write(b); |
| } |
| |
| @Override |
| public void write(ByteBuffer b) throws IOException { |
| write(b.array()); |
| } |
| |
| @Override |
| public long getPosition() throws IOException { |
| return output.getPosition(); |
| } |
| |
| @Override |
| public void close() throws IOException { |
| output.close(); |
| } |
| |
| @Override |
| public OutputStream wrapAsStream() { |
| return this; |
| } |
| |
| @Override |
| public void flush() throws IOException { |
| output.flush(); |
| } |
| |
| @Override |
| public void truncate(long size) throws IOException { |
| output.truncate(size); |
| } |
| |
| @Override |
| public void force() throws IOException { |
| output.force(); |
| } |
| |
| @Override |
| public void write(byte[] buf, int start, int length) throws IOException { |
| while (length > 0) { |
| int writeSize = Math.min(length, maxSizePerWrite); |
| rateLimiter.acquire(writeSize); |
| output.wrapAsStream().write(buf, start, writeSize); |
| start += writeSize; |
| length -= writeSize; |
| } |
| } |
| } |