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/*
* Copyright (c) 2009, Padraig O'Sullivan
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* * Neither the name of Padraig O'Sullivan nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "drizzled/show.h"
#include "drizzled/gettext.h"
#include <boost/program_options.hpp>
#include <drizzled/module/option_map.h>
#include "stats_table.h"
#include "analysis_table.h"
#include "sysvar_holder.h"
#include <string>
#include <map>
namespace po=boost::program_options;
using namespace std;
using namespace drizzled;
/*
* DATA_DICTIONARY tables.
*/
static AnalysisTableTool *analysis_table_tool;
static StatsTableTool *stats_table_tool;
/*
* System variable related variables.
*/
static char *sysvar_memcached_servers= NULL;
/**
* Initialize the memcached stats plugin.
*
* @param[in] registry the drizzled::plugin::Registry singleton
* @return false on success; true on failure.
*/
static int init(module::Context &context)
{
const module::option_map &vm= context.getOptions();
if(vm.count("servers"))
{
sysvar_memcached_servers= strdup(vm["servers"].as<string>().c_str());
}
else
{
sysvar_memcached_servers= strdup("");
}
SysvarHolder &sysvar_holder= SysvarHolder::singleton();
sysvar_holder.setServersString(sysvar_memcached_servers);
sysvar_holder.setMemoryPtr(sysvar_memcached_servers);
/* we are good to go */
stats_table_tool= new(std::nothrow)StatsTableTool;
context.add(stats_table_tool);
analysis_table_tool= new(std::nothrow)AnalysisTableTool;
context.add(analysis_table_tool);
return 0;
}
static int check_memc_servers(Session *,
drizzle_sys_var *,
void *save,
drizzle_value *value)
{
char buff[STRING_BUFFER_USUAL_SIZE];
int len= sizeof(buff);
const char *input= value->val_str(value, buff, &len);
if (input)
{
SysvarHolder &sysvar_holder= SysvarHolder::singleton();
sysvar_holder.setServersStringVar(input);
*(bool *) save= (bool) true;
return 0;
}
*(bool *) save= (bool) false;
return 1;
}
static void set_memc_servers(Session *,
drizzle_sys_var *,
void *var_ptr,
const void *save)
{
if (*(bool *) save != false)
{
SysvarHolder &sysvar_holder= SysvarHolder::singleton();
sysvar_holder.updateServersSysvar((const char **) var_ptr);
}
}
static DRIZZLE_SYSVAR_STR(servers,
sysvar_memcached_servers,
PLUGIN_VAR_OPCMDARG,
N_("List of memcached servers."),
check_memc_servers, /* check func */
set_memc_servers, /* update func */
""); /* default value */
static void init_options(drizzled::module::option_context &context)
{
context("servers",
po::value<string>(),
N_("List of memcached servers."));
}
static drizzle_sys_var *system_variables[]=
{
DRIZZLE_SYSVAR(servers),
NULL
};
DRIZZLE_DECLARE_PLUGIN
{
DRIZZLE_VERSION_ID,
"memcached_stats",
"1.0",
"Padraig O'Sullivan",
N_("Memcached Stats as I_S tables"),
PLUGIN_LICENSE_BSD,
init, /* Plugin Init */
system_variables, /* system variables */
init_options /* config options */
}
DRIZZLE_DECLARE_PLUGIN_END;
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