content: /*
   * 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;
      }
  
  }
  