~drizzle-trunk/drizzle/development

/* -*- mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; -*-

 *  vim:expandtab:shiftwidth=2:tabstop=2:smarttab:

 *

 *  Copyright (C) 2008 Sun Microsystems, Inc.

 *

 *  This program is free software; you can redistribute it and/or modify

 *  it under the terms of the GNU General Public License as published by

 *  the Free Software Foundation; version 2 of the License.

 *

 *  This program is distributed in the hope that it will be useful,

 *  but WITHOUT ANY WARRANTY; without even the implied warranty of

 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 *  GNU General Public License for more details.

 *

 *  You should have received a copy of the GNU General Public License

 *  along with this program; if not, write to the Free Software

 *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA

 */

#pragma once

#include <drizzled/plugin/listen_tcp.h>

#include <drizzled/plugin/client.h>

#include <drizzled/atomics.h>

#include <drizzled/plugin/table_function.h>

#include "net_serv.h"

namespace drizzle_plugin {

class ProtocolCounters

{

public:

  ProtocolCounters() :

      max_connections(1000)

  { }

  drizzled::atomic<uint64_t> connectionCount;

  drizzled::atomic<uint64_t> failedConnections;

  drizzled::atomic<uint64_t> connected;

  uint32_t max_connections;

};

typedef drizzled::constrained_check<uint32_t, 300, 1> timeout_constraint;

typedef drizzled::constrained_check<uint32_t, 300, 1> retry_constraint;

typedef drizzled::constrained_check<uint32_t, 1048576, 1024, 1024> buffer_constraint;

class ListenMySQLProtocol: public drizzled::plugin::ListenTcp

{

public:

  ListenMySQLProtocol(std::string name, const std::string &hostname) :

   drizzled::plugin::ListenTcp(name),

   _hostname(hostname)

  { }

  virtual const std::string getHost() const;

  virtual in_port_t getPort() const;

  virtual drizzled::plugin::Client *getClient(int fd);

  static ProtocolCounters mysql_counters;

  virtual ProtocolCounters& getCounters() const { return mysql_counters; }

  void addCountersToTable();

protected:

  const std::string _hostname;

};

class ClientMySQLProtocol: public drizzled::plugin::Client

{

protected:

  NET net;

  drizzled::String packet;

  uint32_t client_capabilities;

  bool _is_interactive;

  bool checkConnection();

  void netStoreData(const void*, size_t);

  void writeEOFPacket(uint32_t server_status, uint32_t total_warn_count);

  unsigned char *storeLength(unsigned char *packet, uint64_t length);

  void makeScramble(char *scramble);

public:

  ClientMySQLProtocol(int fd, ProtocolCounters&);

  virtual ~ClientMySQLProtocol();

  bool isInteractive() const

  {

    return _is_interactive;

  }

  ProtocolCounters& counters;

  virtual int getFileDescriptor();

  virtual bool isConnected();

  virtual bool flush();

  virtual void close();

  virtual bool authenticate();

  virtual bool readCommand(char **packet, uint32_t& packet_length);

  virtual void sendOK();

  virtual void sendEOF();

  virtual void sendError(const drizzled::error_t sql_errno, const char *err);

  virtual void sendFields(drizzled::List<drizzled::Item>&);

  using Client::store;

  virtual void store(drizzled::Field*);

  virtual void store();

  virtual void store(int32_t from);

  virtual void store(uint32_t from);

  virtual void store(int64_t from);

  virtual void store(uint64_t from);

  virtual void store(double from, uint32_t decimals, drizzled::String *buffer);

  virtual void store(const char*, size_t);

  virtual bool haveError();

  virtual bool wasAborted();

};

} /* namespace drizzle_plugin */