~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

 *

 *  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

 */

#ifndef PLUGIN_MYSQL_PROTOCOL_MYSQL_PROTOCOL_H

#define PLUGIN_MYSQL_PROTOCOL_MYSQL_PROTOCOL_H

#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

{

void compose_ip_addresses(std::vector<std::string> options);

class ProtocolCounters

{

  public:

    ProtocolCounters():

      max_connections(1000)

    { }

    drizzled::atomic<uint64_t> connectionCount;

    drizzled::atomic<uint64_t> adminConnectionCount;

    drizzled::atomic<uint64_t> failedConnections;

    drizzled::atomic<uint64_t> connected;

    drizzled::atomic<uint64_t> adminConnected;

    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

{

protected:

  const std::string _hostname;

  bool _using_mysql41_protocol;

public:

  ListenMySQLProtocol(std::string name,

                      const std::string &hostname,

                      bool using_mysql41_protocol):

   drizzled::plugin::ListenTcp(name),

   _hostname(hostname),

   _using_mysql41_protocol(using_mysql41_protocol)

  { }

  virtual ~ListenMySQLProtocol();

  virtual const std::string getHost(void) const;

  virtual in_port_t getPort(void) const;

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

  static ProtocolCounters *mysql_counters;

  virtual ProtocolCounters *getCounters(void) const { return mysql_counters; }

};

class ClientMySQLProtocol: public drizzled::plugin::Client

{

protected:

  NET net;

  drizzled::String packet;

  uint32_t client_capabilities;

  bool is_admin_connection;

  bool _using_mysql41_protocol;

  bool checkConnection(void);

  bool netStoreData(const unsigned char *from, size_t length);

  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, bool _using_mysql41_protocol, ProtocolCounters *set_counters);

  virtual ~ClientMySQLProtocol();

  ProtocolCounters *counters;

  virtual int getFileDescriptor(void);

  virtual bool isConnected();

  virtual bool isReading(void);

  virtual bool isWriting(void);

  virtual bool flush(void);

  virtual void close(void);

  virtual bool authenticate(void);

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

  virtual void sendOK(void);

  virtual void sendEOF(void);

  virtual void sendError(uint32_t sql_errno, const char *err);

  virtual bool sendFields(drizzled::List<drizzled::Item> *list);

  using Client::store;

  virtual bool store(drizzled::Field *from);

  virtual bool store(void);

  virtual bool store(int32_t from);

  virtual bool store(uint32_t from);

  virtual bool store(int64_t from);

  virtual bool store(uint64_t from);

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

  virtual bool store(const char *from, size_t length);

  virtual bool haveError(void);

  virtual bool haveMoreData(void);

  virtual bool wasAborted(void);

  virtual bool isAdminAllowed(void);

  static std::vector<std::string> mysql_admin_ip_addresses;

  static void mysql_compose_ip_addresses(std::vector<std::string> options);

};

} /* namespace drizzle_plugin */

#endif /* PLUGIN_MYSQL_PROTOCOL_MYSQL_PROTOCOL_H */