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 com.google.common.collect.ImmutableMap;
  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 java.util.Optional;
  
  import static io.airlift.drift.protocol.TMessageType.CALL;
  import static io.airlift.drift.protocol.TMessageType.ONEWAY;
  import static io.airlift.drift.transport.netty.codec.HeaderTransport.tryDecodeFrameInfo;
  import static io.airlift.drift.transport.netty.codec.Protocol.BINARY;
  import static io.airlift.drift.transport.netty.codec.Protocol.FB_COMPACT;
  import static io.airlift.drift.transport.netty.codec.Transport.HEADER;
  import static org.testng.Assert.assertEquals;
  
  public class TestHeaderTransport
  {
      @Test
      public void testTryDecodeSequenceId()
              throws Exception
      {
          try (TestingPooledByteBufAllocator allocator = new TestingPooledByteBufAllocator()) {
              ByteBuf message = createTestFrame(allocator, "method", CALL, 0xFFAA, BINARY, true);
              try {
                  assertDecodeFrameInfo(message.retainedSlice(0, 0), Optional.empty());
                  assertDecodeFrameInfo(message.retainedSlice(0, 1), Optional.empty());
                  assertDecodeFrameInfo(message.retainedSlice(0, 5), Optional.empty());
                  assertDecodeFrameInfo(message.retainedSlice(0, 10), Optional.empty());
                  assertDecodeFrameInfo(message.retainedSlice(0, 15), Optional.empty());
                  assertDecodeFrameInfo(
                          message.retainedDuplicate(),
                          Optional.of(new FrameInfo("method", CALL, 0xFFAA, HEADER, BINARY, true)));
              }
              finally {
                  message.release();
              }
              assertDecodeFrameInfo(
                      createTestFrame(allocator, "method1", ONEWAY, 123, FB_COMPACT, false),
                      Optional.of(new FrameInfo("method1", ONEWAY, 123, HEADER, FB_COMPACT, false)));
          }
      }
  
      private static void assertDecodeFrameInfo(ByteBuf message, Optional<FrameInfo> frameInfo)
      {
          try {
              assertEquals(tryDecodeFrameInfo(message), frameInfo);
          }
          finally {
              message.release();
          }
      }
  
      private static ByteBuf createTestFrame(ByteBufAllocator allocator, String methodName, byte messageType, int sequenceId, Protocol protocol, boolean supportOutOfOrderResponse)
              throws TException
      {
          ThriftFrame frame = new ThriftFrame(
                  sequenceId,
                  createTestMessage(allocator, methodName, messageType, sequenceId, protocol),
                  ImmutableMap.of("header", "value"),
                  HEADER,
                  protocol,
                  supportOutOfOrderResponse);
          return HeaderTransport.encodeFrame(frame);
      }
  
      private static ByteBuf createTestMessage(ByteBufAllocator allocator, String methodName, byte messageType, int sequenceId, Protocol protocol)
              throws TException
      {
          TChannelBufferOutputTransport transport = new TChannelBufferOutputTransport(allocator);
          try {
              TProtocolWriter protocolWriter = protocol.createProtocol(transport);
              protocolWriter.writeMessageBegin(new TMessage(methodName, messageType, sequenceId));
  
              // write the parameters
              ProtocolWriter writer = new ProtocolWriter(protocolWriter);
              writer.writeStructBegin("method_args");
              writer.writeStructEnd();
  
              protocolWriter.writeMessageEnd();
              return transport.getBuffer();
          }
          finally {
              transport.release();
          }
      }
  }
  