content: /*
   * Copyright (C) 2018 Facebook, Inc.
   *
   * 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 io.airlift.drift.transport.netty.codec;
  
  import io.airlift.drift.TException;
  import io.airlift.drift.codec.internal.ProtocolWriter;
  import io.airlift.drift.protocol.TMessage;
  import io.airlift.drift.protocol.TProtocolWriter;
  import io.airlift.drift.transport.netty.buffer.TestingPooledByteBufAllocator;
  import io.airlift.drift.transport.netty.ssl.TChannelBufferOutputTransport;
  import io.netty.buffer.ByteBuf;
  import io.netty.buffer.ByteBufAllocator;
  import org.testng.annotations.Test;
  
  import static io.airlift.drift.protocol.TMessageType.CALL;
  import static io.airlift.drift.transport.netty.codec.Transport.FRAMED;
  import static org.testng.Assert.assertEquals;
  import static org.testng.Assert.assertFalse;
  import static org.testng.Assert.assertTrue;
  
  public class TestSimpleFrameInfoDecoder
  {
      private static final String METHOD_NAME = "method";
      private static final int SEQUENCE_ID = 0xAABBCCEE;
  
      @Test
      public void testDecodeSequenceId()
              throws Exception
      {
          try (TestingPooledByteBufAllocator allocator = new TestingPooledByteBufAllocator()) {
              for (Protocol protocol : Protocol.values()) {
                  testDecodeSequenceId(allocator, protocol);
              }
          }
      }
  
      private static void testDecodeSequenceId(ByteBufAllocator allocator, Protocol protocol)
              throws TException
      {
          FrameInfoDecoder decoder = new SimpleFrameInfoDecoder(FRAMED, protocol, true);
          ByteBuf message = createTestMessage(allocator, protocol);
          try {
              assertFalse(decoder.tryDecodeFrameInfo(message.slice(0, 0)).isPresent());
              assertFalse(decoder.tryDecodeFrameInfo(message.slice(0, 1)).isPresent());
              assertFalse(decoder.tryDecodeFrameInfo(message.slice(0, 2)).isPresent());
              assertFalse(decoder.tryDecodeFrameInfo(message.slice(0, 5)).isPresent());
              assertTrue(decoder.tryDecodeFrameInfo(message.slice(0, message.readableBytes())).isPresent());
              assertTrue(decoder.tryDecodeFrameInfo(message).isPresent());
              assertEquals(decoder.tryDecodeFrameInfo(message).get(), new FrameInfo(METHOD_NAME, CALL, SEQUENCE_ID, FRAMED, protocol, true));
          }
          finally {
              message.release();
          }
      }
  
      private static ByteBuf createTestMessage(ByteBufAllocator allocator, Protocol protocol)
              throws TException
      {
          TChannelBufferOutputTransport transport = new TChannelBufferOutputTransport(allocator);
          try {
              TProtocolWriter protocolWriter = protocol.createProtocol(transport);
              protocolWriter.writeMessageBegin(new TMessage("method", CALL, SEQUENCE_ID));
  
              // write the parameters
              ProtocolWriter writer = new ProtocolWriter(protocolWriter);
              writer.writeStructBegin("method_args");
              writer.writeStructEnd();
  
              protocolWriter.writeMessageEnd();
              return transport.getBuffer();
          }
          finally {
              transport.release();
          }
      }
  }
  