/// 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.

part of thrift;

/// Adapted from the C# version.
class TMultiplexedProtocol extends TProtocolDecorator {
  static const SEPARATOR = ':';

  final String _serviceName;

  TMultiplexedProtocol(TProtocol protocol, String serviceName)
      : _serviceName = serviceName,
        super(protocol) {
    if (serviceName == null) {
      throw new ArgumentError.notNull("serviceName");
    }
  }

  void writeMessageBegin(TMessage message) {
    if (message.type == TMessageType.CALL ||
        message.type == TMessageType.ONEWAY) {
      String name = _serviceName + SEPARATOR + message.name;
      message = new TMessage(name, message.type, message.seqid);
    }

    super.writeMessageBegin(message);
  }
}
