//
   //  ========================================================================
   //  Copyright (c) 1995-2016 Mort Bay Consulting Pty. Ltd.
   //  ------------------------------------------------------------------------
   //  All rights reserved. This program and the accompanying materials
   //  are made available under the terms of the Eclipse Public License v1.0
   //  and Apache License v2.0 which accompanies this distribution.
   //
   //      The Eclipse Public License is available at
  //      http://www.eclipse.org/legal/epl-v10.html
  //
  //      The Apache License v2.0 is available at
  //      http://www.opensource.org/licenses/apache2.0.php
  //
  //  You may elect to redistribute this code under either of these licenses.
  //  ========================================================================
  //
  
  package org.eclipse.jetty.http2.frames;
  
  import java.nio.charset.StandardCharsets;
  
  import org.eclipse.jetty.http2.ErrorCode;
  
  public class GoAwayFrame extends Frame
  {
      private final int lastStreamId;
      private final int error;
      private final byte[] payload;
  
      public GoAwayFrame(int lastStreamId, int error, byte[] payload)
      {
          super(FrameType.GO_AWAY);
          this.lastStreamId = lastStreamId;
          this.error = error;
          this.payload = payload;
      }
  
      public int getLastStreamId()
      {
          return lastStreamId;
      }
  
      public int getError()
      {
          return error;
      }
  
      public byte[] getPayload()
      {
          return payload;
      }
  
      public String tryConvertPayload()
      {
          if (payload == null || payload.length == 0)
              return "";
          try
          {
              return new String(payload, StandardCharsets.UTF_8);
          }
          catch (Throwable x)
          {
              return "";
          }
      }
  
      @Override
      public String toString()
      {
          ErrorCode errorCode = ErrorCode.from(error);
          return String.format("%s,%d/%s/%s",
                  super.toString(),
                  lastStreamId,
                  errorCode != null ? errorCode.toString() : String.valueOf(error),
                  tryConvertPayload());
      }
  }