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/* - mode: c; c-basic-offset: 2; indent-tabs-mode: nil; -*-
* vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
*
* 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
*/
/**
* @file
* status I_S table methods.
*/
#include "drizzled/server_includes.h"
#include "drizzled/session.h"
#include "drizzled/show.h"
#include "drizzled/tztime.h"
#include "helper_methods.h"
#include "status.h"
#include <vector>
using namespace drizzled;
using namespace std;
/*
* Vectors of columns for the status I_S tables.
*/
vector<const plugin::ColumnInfo *> *status_columns= NULL;
/*
* Methods for the status related I_S tables.
*/
static plugin::InfoSchemaMethods *methods= NULL;
/*
* status I_S tables.
*/
static plugin::InfoSchemaTable *glob_status_table= NULL;
static plugin::InfoSchemaTable *sess_status_table= NULL;
static plugin::InfoSchemaTable *status_table= NULL;
/**
* Populate the vectors of columns for the I_S table.
*
* @return a pointer to a std::vector of Columns.
*/
vector<const plugin::ColumnInfo *> *GlobalStatusIS::createColumns()
{
if (status_columns == NULL)
{
status_columns= new vector<const plugin::ColumnInfo *>;
}
else
{
clearColumns(*status_columns);
}
status_columns->push_back(new plugin::ColumnInfo("VARIABLE_NAME",
64,
DRIZZLE_TYPE_VARCHAR,
0,
0,
"Variable_name",
SKIP_OPEN_TABLE));
status_columns->push_back(new plugin::ColumnInfo("VARIABLE_VALUE",
16300,
DRIZZLE_TYPE_VARCHAR,
0,
1,
"Value",
SKIP_OPEN_TABLE));
return status_columns;
}
/**
* Initialize the I_S table.
*
* @return a pointer to an I_S table
*/
plugin::InfoSchemaTable *GlobalStatusIS::getTable()
{
status_columns= createColumns();
if (methods == NULL)
{
methods= new StatusISMethods();
}
if (glob_status_table == NULL)
{
glob_status_table= new plugin::InfoSchemaTable("GLOBAL_STATUS",
*status_columns,
-1, -1, false, false,
0,
methods);
}
return glob_status_table;
}
/**
* Delete memory allocated for the table, columns and methods.
*/
void GlobalStatusIS::cleanup()
{
clearColumns(*status_columns);
delete glob_status_table;
delete methods;
delete status_columns;
}
/**
* Initialize the I_S table.
*
* @return a pointer to an I_S table
*/
plugin::InfoSchemaTable *SessionStatusIS::getTable()
{
if (sess_status_table == NULL)
{
sess_status_table= new plugin::InfoSchemaTable("SESSION_STATUS",
*status_columns,
-1, -1, false, false,
0,
methods);
}
return sess_status_table;
}
/**
* Delete memory allocated for the table, columns and methods.
*/
void SessionStatusIS::cleanup()
{
delete sess_status_table;
}
/**
* Initialize the I_S table.
*
* @return a pointer to an I_S table
*/
plugin::InfoSchemaTable *StatusIS::getTable()
{
if (status_table == NULL)
{
status_table= new plugin::InfoSchemaTable("STATUS",
*status_columns,
-1, -1, true, false, 0,
methods);
}
return status_table;
}
/**
* Delete memory allocated for the table, columns and methods.
*/
void StatusIS::cleanup()
{
delete status_table;
}
int StatusISMethods::fillTable(Session *session, TableList *tables)
{
LEX *lex= session->lex;
const char *wild= lex->wild ? lex->wild->ptr() : NULL;
int res= 0;
STATUS_VAR *tmp1, tmp;
const string schema_table_name= tables->schema_table->getTableName();
enum enum_var_type option_type;
bool upper_case_names= (schema_table_name.compare("STATUS") != 0);
if (schema_table_name.compare("STATUS") == 0)
{
option_type= lex->option_type;
if (option_type == OPT_GLOBAL)
{
tmp1= &tmp;
}
else
{
tmp1= session->initial_status_var;
}
}
else if (schema_table_name.compare("GLOBAL_STATUS") == 0)
{
option_type= OPT_GLOBAL;
tmp1= &tmp;
}
else
{
option_type= OPT_SESSION;
tmp1= &session->status_var;
}
pthread_mutex_lock(&LOCK_status);
if (option_type == OPT_GLOBAL)
{
calc_sum_of_all_status(&tmp);
}
res= show_status_array(session, wild,
getFrontOfStatusVars(),
option_type, tmp1, "", tables->table,
upper_case_names);
pthread_mutex_unlock(&LOCK_status);
return res;
}
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