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/*
* Copyright (C) 2009 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; either version 2 of the License, or
* (at your option) any later version.
*
* 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 "drizzled/server_includes.h"
#include "drizzled/show.h"
#include "drizzled/gettext.h"
#include "drizzled/info_schema.h"
#include "stats_table.h"
#include <string>
#include <map>
using namespace std;
using namespace drizzled;
/*
* Vectors of columns for I_S tables.
*/
static vector<const ColumnInfo *> memcached_stats_columns;
/*
* Methods for I_S tables.
*/
static InfoSchemaMethods *memcached_stats_methods= NULL;
/*
* I_S tables.
*/
static InfoSchemaTable *memcached_stats_table= NULL;
/*
* System variable related variables.
*/
static char *sysvar_memcached_servers= NULL;
static const char DEFAULT_SERVERS_STRING[]= "localhost:11211";
/**
* Populate the vectors of columns for each I_S table.
*
* @return false on success; true on failure.
*/
static bool initColumns()
{
if (createMemcachedStatsColumns(memcached_stats_columns))
{
return true;
}
return false;
}
/**
* Clear the vectors of columns for each I_S table.
*/
static void cleanupColumns()
{
clearMemcachedColumns(memcached_stats_columns);
}
/**
* Initialize the methods for each I_S table.
*
* @return false on success; true on failure
*/
static bool initMethods()
{
memcached_stats_methods= new(std::nothrow)
MemcachedStatsISMethods(sysvar_memcached_servers);
if (! memcached_stats_methods)
{
return true;
}
return false;
}
/**
* Delete memory allocated for the I_S table methods.
*/
static void cleanupMethods()
{
delete memcached_stats_methods;
}
/**
* Initialize the I_S tables related to memcached.
*
* @return false on success; true on failure
*/
static bool initMemcachedTables()
{
memcached_stats_table= new(std::nothrow) InfoSchemaTable("MEMCACHED_STATS",
memcached_stats_columns,
-1, -1, false, false, 0,
memcached_stats_methods);
if (! memcached_stats_table)
{
return true;
}
return false;
}
/**
* Delete memory allocated for the I_S tables.
*/
static void cleanupMemcachedTables()
{
delete memcached_stats_table;
}
/**
* Initialize the memcached stats plugin.
*
* @param[in] registry the drizzled::plugin::Registry singleton
* @return false on success; true on failure.
*/
static int init(plugin::Registry ®istry)
{
if (initMethods())
{
return true;
}
if (initColumns())
{
return true;
}
if (initMemcachedTables())
{
return true;
}
/* we are good to go */
registry.add(memcached_stats_table);
return false;
}
/**
* Clean up the memcached stats plugin.
*
* @param[in] registry the drizzled::plugin::Registry singleton
* @return false on success; true on failure
*/
static int deinit(plugin::Registry ®istry)
{
registry.remove(memcached_stats_table);
cleanupMethods();
cleanupColumns();
cleanupMemcachedTables();
return false;
}
static DRIZZLE_SYSVAR_STR(servers,
sysvar_memcached_servers,
PLUGIN_VAR_OPCMDARG,
N_("List of memcached servers."),
NULL, /* check func */
NULL, /* update func */
DEFAULT_SERVERS_STRING);
static struct st_mysql_sys_var *system_variables[]=
{
DRIZZLE_SYSVAR(servers),
NULL
};
drizzle_declare_plugin(memcached_stats)
{
"memcached_stats",
"0.1",
"Padraig O'Sullivan",
N_("Memcached Stats as I_S tables"),
PLUGIN_LICENSE_GPL,
init, /* Plugin Init */
deinit, /* Plugin Deinit */
NULL, /* status variables */
system_variables, /* system variables */
NULL /* config options */
}
drizzle_declare_plugin_end;
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