text: /*
   * 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.
   */
  
  #pragma once
  
  #include "server_intercept.h"
  #include "request_queue.h"
  #include <map>
  #include <pthread.h>
  namespace ats_plugin
  {
  class ServerIntercept;
  class ServerConnection;
  class ConnectionPool;
  class Server;
  
  class UniqueRequesID
  {
  public:
    static const uint
    getNext()
    {
      // TODO add mutext here
      return _id++;
    }
  
  private:
    static uint _id;
  };
  
  struct ServerConnectionInfo {
  public:
    ServerConnectionInfo(Server *fServer, ServerConnection *server_conn) : server(fServer), server_connection(server_conn) {}
    ~ServerConnectionInfo() {}
    Server *server;
    ServerConnection *server_connection;
  };
  
  class ThreadData
  {
  public:
    ThreadData(ThreadData const &) = delete;
    void operator=(ThreadData const &) = delete;
  
    ThreadData(Server *server) : _server(server)
    {
      tid = pthread_self();
      createConnectionPool(_server);
      _pendingReqQueue = new RequestQueue();
    }
    ~ThreadData()
    {
      delete _pendingReqQueue;
      // delete _connection_pool;
    }
    void createConnectionPool(Server *server);
  
    ConnectionPool *
    getConnectionPool()
    {
      return _connection_pool;
    }
  
    RequestQueue *
    getRequestQueue()
    {
      return _pendingReqQueue;
    }
  
  private:
    pthread_t tid;
    Server *_server;
    RequestQueue *_pendingReqQueue;
    ConnectionPool *_connection_pool;
  };
  
  class Server
  {
  public:
    static Server *server();
    Server(Server const &) = delete;
    void operator=(Server const &) = delete;
  
    Server();
    ~Server();
  
    bool setupThreadLocalStorage();
    const uint connect(ServerIntercept *intercept);
    void reConnect(uint request_id);
    ServerConnection *getServerConnection(uint request_id);
  
    ServerIntercept *getIntercept(uint request_id);
    void removeIntercept(uint request_id);
  
    bool writeRequestHeader(uint request_id);
    bool writeRequestBody(uint request_id, const std::string &data);
    bool writeRequestBodyComplete(uint request_id);
  
    void connectionClosed(ServerConnection *server_conn);
  
  private:
    void initiateBackendConnection(ServerIntercept *intercept, ServerConnection *conn);
    std::map<uint, std::tuple<ServerIntercept *, ServerConnection *>> _intercept_list;
    TSMutex _reqId_mutex;
    TSMutex _intecept_mutex;
  };
  } // namespace ats_plugin
  