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/* -*- mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; -*-
* vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
*
* Copyright (C) 2008 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; 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 <drizzled/server_includes.h>
#include <drizzled/logging.h>
#include <drizzled/gettext.h>
#include "drizzled/plugin_registry.h"
#include <vector>
using namespace std;
static vector<Logging_handler *> all_loggers;
void add_logger(Logging_handler *handler)
{
if (handler != NULL)
all_loggers.push_back(handler);
}
void remove_logger(Logging_handler *handler)
{
if (handler != NULL)
all_loggers.erase(find(all_loggers.begin(), all_loggers.end(), handler));
}
class LoggingPreIterate : public unary_function<Logging_handler *, bool>
{
Session *session;
public:
LoggingPreIterate(Session *session_arg) :
unary_function<Logging_handler *, bool>(),
session(session_arg) {}
inline result_type operator()(argument_type handler)
{
if (handler->pre(session))
{
/* TRANSLATORS: The leading word "logging" is the name
of the plugin api, and so should not be translated. */
errmsg_printf(ERRMSG_LVL_ERROR,
_("logging '%s' pre() failed"),
handler->getName().c_str());
return true;
}
return false;
}
};
class LoggingPostIterate : public unary_function<Logging_handler *, bool>
{
Session *session;
public:
LoggingPostIterate(Session *session_arg) :
unary_function<Logging_handler *, bool>(),
session(session_arg) {}
/* This gets called once for each loaded logging plugin */
inline result_type operator()(argument_type handler)
{
if (handler->post(session))
{
/* TRANSLATORS: The leading word "logging" is the name
of the plugin api, and so should not be translated. */
errmsg_printf(ERRMSG_LVL_ERROR,
_("logging '%s' post() failed"),
handler->getName().c_str());
return true;
}
return false;
}
};
/* This is the logging_pre_do entry point.
This gets called by the rest of the Drizzle server code */
bool logging_pre_do (Session *session)
{
/* Use find_if instead of foreach so that we can collect return codes */
vector<Logging_handler *>::iterator iter=
find_if(all_loggers.begin(), all_loggers.end(),
LoggingPreIterate(session));
/* If iter is == end() here, that means that all of the plugins returned
* false, which in this case means they all succeeded. Since we want to
* return false on success, we return the value of the two being !=
*/
return iter != all_loggers.end();
}
/* This is the logging_post_do entry point.
This gets called by the rest of the Drizzle server code */
bool logging_post_do (Session *session)
{
/* Use find_if instead of foreach so that we can collect return codes */
vector<Logging_handler *>::iterator iter=
find_if(all_loggers.begin(), all_loggers.end(),
LoggingPreIterate(session));
/* If iter is == end() here, that means that all of the plugins returned
* false, which in this case means they all succeeded. Since we want to
* return false on success, we return the value of the two being !=
*/
return iter != all_loggers.end();
}
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