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/* - mode: c; c-basic-offset: 2; indent-tabs-mode: nil; -*-
* vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
*
* Copyright (C) 2010 Brian Aker
*
* 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 "config.h"
#include "drizzled/session.h"
#include "drizzled/user_var_entry.h"
#include "drizzled/plugin/client/concurrent.h"
#include "drizzled/catalog/local.h"
#include "drizzled/execute.h"
namespace drizzled
{
Execute::Execute(Session &arg, bool wait_arg) :
wait(wait_arg),
_session(arg)
{
}
Execute::~Execute()
{
}
void Execute::run(const char *arg, size_t length)
{
std::string execution_string(arg, length);
run(execution_string);
}
void Execute::run(std::string &execution_string)
{
boost_thread_shared_ptr thread;
if (_session.isConcurrentExecuteAllowed())
{
plugin::client::Concurrent *client= new plugin::client::Concurrent;
client->pushSQL(execution_string);
Session::shared_ptr new_session= Session::make_shared(client, catalog::local());
// We set the current schema. @todo do the same with catalog
util::string::const_shared_ptr schema(_session.schema());
if (not schema->empty())
new_session->set_db(*schema);
new_session->setConcurrentExecute(false);
// Overwrite the context in the next session, with what we have in our
// session. Eventually we will allow someone to change the effective
// user.
new_session->user()= _session.user();
if (Session::schedule(new_session))
{
Session::unlink(new_session);
}
else if (wait)
{
thread= new_session->getThread();
}
}
else
{
my_error(ER_WRONG_ARGUMENTS, MYF(0), "A Concurrent Execution Session can not launch another session.");
return;
}
if (wait && thread && thread->joinable())
{
// We want to make sure that we can be killed
if (_session.getThread())
{
boost::this_thread::restore_interruption dl(_session.getThreadInterupt());
try {
thread->join();
}
catch(boost::thread_interrupted const&)
{
// Just surpress and return the error
my_error(drizzled::ER_QUERY_INTERRUPTED, MYF(0));
return;
}
}
else
{
thread->join();
}
}
}
} /* namespace drizzled */
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