/*
 * Copyright © 2024 Apple Inc. and the Pkl project authors. All rights reserved.
 *
 * 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
 *
 *     https://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.pkl.core.messaging;

import java.io.IOException;

/** A bidirectional transport for sending and receiving messages. */
public interface MessageTransport extends AutoCloseable {
  interface OneWayHandler {
    void handleOneWay(Message.OneWay msg) throws ProtocolException;
  }

  interface RequestHandler {
    void handleRequest(Message.Request msg) throws ProtocolException, IOException;
  }

  interface ResponseHandler {
    void handleResponse(Message.Response msg) throws ProtocolException;
  }

  void start(OneWayHandler oneWayHandler, RequestHandler requestHandler)
      throws ProtocolException, IOException;

  void send(Message.OneWay message) throws ProtocolException, IOException;

  void send(Message.Request message, ResponseHandler responseHandler)
      throws ProtocolException, IOException;

  void send(Message.Response message) throws ProtocolException, IOException;

  @Override
  void close();
}
