Java tutorial
/* * 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.distributedlog.common.util; import io.netty.buffer.ByteBuf; /** * Utils to handle with {@link io.netty.buffer.ByteBuf}. */ public class ByteBufUtils { public static byte[] getArray(ByteBuf buffer) { if (buffer.hasArray() && buffer.arrayOffset() == 0 && buffer.writableBytes() == 0) { return buffer.array(); } byte[] data = new byte[buffer.readableBytes()]; buffer.getBytes(buffer.readerIndex(), data); return data; } }