262 lines
6.8 KiB
C++
262 lines
6.8 KiB
C++
#ifndef SQL_SERVERS_INCLUDED
|
|
#define SQL_SERVERS_INCLUDED
|
|
|
|
/* Copyright (c) 2006, 2013, Oracle and/or its affiliates. All rights reserved.
|
|
|
|
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 */
|
|
|
|
#include "my_global.h" /* uint */
|
|
#include "sql_cmd.h"
|
|
#include "sql_string.h"
|
|
#include "sql_alloc.h"
|
|
|
|
class THD;
|
|
struct TABLE;
|
|
typedef struct st_mem_root MEM_ROOT;
|
|
|
|
class FOREIGN_SERVER : public Sql_alloc
|
|
{
|
|
public:
|
|
char *server_name;
|
|
long port;
|
|
size_t server_name_length;
|
|
char *db, *scheme, *username, *password, *socket, *owner, *host, *sport;
|
|
|
|
FOREIGN_SERVER()
|
|
: server_name(NULL), port(-1), server_name_length(0), db(NULL),
|
|
scheme(NULL), username(NULL), password(NULL), socket(NULL),
|
|
owner(NULL), host(NULL), sport(NULL)
|
|
{ }
|
|
};
|
|
|
|
|
|
/* cache handlers */
|
|
bool servers_init(bool dont_read_server_table);
|
|
bool servers_reload(THD *thd);
|
|
void servers_free(bool end=0);
|
|
|
|
/* lookup functions */
|
|
FOREIGN_SERVER *get_server_by_name(MEM_ROOT *mem, const char *server_name,
|
|
FOREIGN_SERVER *server_buffer);
|
|
|
|
|
|
/**
|
|
This class represent server options as set by the parser.
|
|
*/
|
|
|
|
class Server_options
|
|
{
|
|
public:
|
|
static const long PORT_NOT_SET= -1;
|
|
LEX_STRING m_server_name;
|
|
private:
|
|
long m_port;
|
|
LEX_STRING m_host;
|
|
LEX_STRING m_db;
|
|
LEX_STRING m_username;
|
|
LEX_STRING m_password;
|
|
LEX_STRING m_scheme;
|
|
LEX_STRING m_socket;
|
|
LEX_STRING m_owner;
|
|
|
|
public:
|
|
void set_port(long port) { m_port= port; }
|
|
void set_host(LEX_STRING host) { m_host= host; }
|
|
void set_db(LEX_STRING db) { m_db= db; }
|
|
void set_username(LEX_STRING username) { m_username= username; }
|
|
void set_password(LEX_STRING password) { m_password= password; }
|
|
void set_scheme(LEX_STRING scheme) { m_scheme= scheme; }
|
|
void set_socket(LEX_STRING socket) { m_socket= socket; }
|
|
void set_owner(LEX_STRING owner) { m_owner= owner; }
|
|
|
|
long get_port() const { return m_port; }
|
|
const char *get_host() const { return m_host.str; }
|
|
const char *get_db() const { return m_db.str; }
|
|
const char *get_username() const { return m_username.str; }
|
|
const char *get_password() const { return m_password.str; }
|
|
const char *get_scheme() const { return m_scheme.str; }
|
|
const char *get_socket() const { return m_socket.str; }
|
|
const char *get_owner() const { return m_owner.str; }
|
|
|
|
/**
|
|
Reset all strings to NULL and port to PORT_NOT_SET.
|
|
This prepares the structure for being used by a new statement.
|
|
*/
|
|
void reset();
|
|
|
|
/**
|
|
Create a cache entry and insert it into the cache.
|
|
|
|
@returns false if entry was created and inserted, true otherwise.
|
|
*/
|
|
bool insert_into_cache() const;
|
|
|
|
/**
|
|
Update a cache entry.
|
|
|
|
@param existing Cache entry to update
|
|
|
|
@returns false if the entry was updated, true otherwise.
|
|
*/
|
|
bool update_cache(FOREIGN_SERVER *existing) const;
|
|
|
|
/**
|
|
Create a record representing these server options,
|
|
ready to be inserted into the mysql.servers table.
|
|
|
|
@param table Table to be inserted into.
|
|
*/
|
|
void store_new_server(TABLE *table) const;
|
|
|
|
/**
|
|
Create a record for updating a row in the mysql.servers table.
|
|
|
|
@param table Table to be updated.
|
|
@param existing Cache entry represeting the existing values.
|
|
*/
|
|
void store_altered_server(TABLE *table, FOREIGN_SERVER *existing) const;
|
|
};
|
|
|
|
|
|
/**
|
|
This class has common code for CREATE/ALTER/DROP SERVER statements.
|
|
*/
|
|
|
|
class Sql_cmd_common_server : public Sql_cmd
|
|
{
|
|
protected:
|
|
TABLE *table;
|
|
|
|
Sql_cmd_common_server()
|
|
: table(NULL)
|
|
{ }
|
|
|
|
virtual ~Sql_cmd_common_server()
|
|
{ }
|
|
|
|
/**
|
|
Check permissions and open the mysql.servers table.
|
|
|
|
@param thd Thread context
|
|
|
|
@returns false if success, true otherwise
|
|
*/
|
|
bool check_and_open_table(THD *thd);
|
|
};
|
|
|
|
|
|
/**
|
|
This class implements the CREATE SERVER statement.
|
|
*/
|
|
|
|
class Sql_cmd_create_server : public Sql_cmd_common_server
|
|
{
|
|
/**
|
|
Server_options::m_server_name contains the name of the
|
|
server to create. The remaining Server_options fields
|
|
contain options as set by the parser.
|
|
Unset options are NULL (or PORT_NOT_SET for port).
|
|
*/
|
|
const Server_options *m_server_options;
|
|
|
|
public:
|
|
Sql_cmd_create_server(Server_options *server_options)
|
|
: Sql_cmd_common_server(), m_server_options(server_options)
|
|
{ }
|
|
|
|
enum_sql_command sql_command_code() const
|
|
{ return SQLCOM_CREATE_SERVER; }
|
|
|
|
/**
|
|
Create a new server by inserting a row into the
|
|
mysql.server table and creating a cache entry.
|
|
|
|
@param thd Thread context
|
|
|
|
@returns false if success, true otherwise
|
|
*/
|
|
bool execute(THD *thd);
|
|
};
|
|
|
|
|
|
/**
|
|
This class implements the ALTER SERVER statement.
|
|
*/
|
|
|
|
class Sql_cmd_alter_server : public Sql_cmd_common_server
|
|
{
|
|
/**
|
|
Server_options::m_server_name contains the name of the
|
|
server to change. The remaining Server_options fields
|
|
contain changed options as set by the parser.
|
|
Unchanged options are NULL (or PORT_NOT_SET for port).
|
|
*/
|
|
const Server_options *m_server_options;
|
|
|
|
public:
|
|
Sql_cmd_alter_server(Server_options *server_options)
|
|
: Sql_cmd_common_server(), m_server_options(server_options)
|
|
{ }
|
|
|
|
enum_sql_command sql_command_code() const
|
|
{ return SQLCOM_ALTER_SERVER; }
|
|
|
|
/**
|
|
Alter an existing server by updating the matching row in the
|
|
mysql.servers table and updating the cache entry.
|
|
|
|
@param thd Thread context
|
|
|
|
@returns false if success, true otherwise
|
|
*/
|
|
bool execute(THD *thd);
|
|
};
|
|
|
|
|
|
/**
|
|
This class implements the DROP SERVER statement.
|
|
*/
|
|
|
|
class Sql_cmd_drop_server : public Sql_cmd_common_server
|
|
{
|
|
/// Name of server to drop
|
|
LEX_STRING m_server_name;
|
|
|
|
/// Is this DROP IF EXISTS?
|
|
bool m_if_exists;
|
|
|
|
public:
|
|
Sql_cmd_drop_server(LEX_STRING server_name,
|
|
bool if_exists)
|
|
: Sql_cmd_common_server(),
|
|
m_server_name(server_name), m_if_exists(if_exists)
|
|
{ }
|
|
|
|
enum_sql_command sql_command_code() const
|
|
{ return SQLCOM_DROP_SERVER; }
|
|
|
|
/**
|
|
Drop an existing server by deleting the matching row from the
|
|
mysql.servers table and removing the cache entry.
|
|
|
|
@param thd Thread context
|
|
|
|
@returns false if success, true otherwise
|
|
*/
|
|
bool execute(THD *thd);
|
|
};
|
|
|
|
|
|
#endif /* SQL_SERVERS_INCLUDED */
|