text: /*
   *     Copyright 2016-2026 TinyZ
   *
   * Licensed 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.ogcs.netty.handler.codec;
  
  import io.netty.buffer.ByteBuf;
  import io.netty.channel.ChannelHandler.Sharable;
  import io.netty.channel.ChannelHandlerContext;
  import io.netty.handler.codec.MessageToMessageDecoder;
  import org.apache.logging.log4j.LogManager;
  import org.apache.logging.log4j.Logger;
  import org.ogcs.utilities.Amf3Util;
  
  import java.io.ByteArrayInputStream;
  import java.util.List;
  
  /**
   * Decode Amf3 {@link ByteBuf} to Java Object.
   * @author : TinyZ.
   * @since 1.0
   */
  @Sharable
  public class Amf3ToObjectDecoder extends MessageToMessageDecoder<Object> {
  
      private static final Logger LOG = LogManager.getLogger(Amf3ToObjectDecoder.class);
  
      @Override
      protected void decode(ChannelHandlerContext ctx, Object msg, List<Object> out) throws Exception {
          if (msg == null) {
              LOG.info("msg is null.");
              return;
          }
          if (msg instanceof ByteBuf) {
              ByteBuf byteBuf = (ByteBuf) msg;
              byte[] array = byteBuf.readBytes(byteBuf.readableBytes()).array();
              Object obj = Amf3Util.convertAmf3ToObj(new ByteArrayInputStream(array));
              if (obj != null) {
                  out.add(obj);
              }
          }
      }
  }
  