Mercurial > hg > freeDiameter
diff extensions/dbg_loglevel/dbg_loglevel.c @ 1345:51a0521cd065
dbg_loglevel: new extension that allows changing the log level at runtime
author | Thomas Klausner <tk@giga.or.at> |
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date | Sun, 12 May 2019 10:35:46 +0200 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/extensions/dbg_loglevel/dbg_loglevel.c Sun May 12 10:35:46 2019 +0200 @@ -0,0 +1,89 @@ +/********************************************************************************************************* +* Software License Agreement (BSD License) * +* Author: Thomas Klausner <tk@giga.or.at> * +* * +* Copyright (c) 2019, Thomas Klausner * +* All rights reserved. * +* * +* Written under contract by Effortel Technologies SA, http://effortel.com/ * +* * +* Redistribution and use of this software 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 the WIDE Project or NICT nor the * +* names of its contributors may be used to endorse or * +* promote products derived from this software without * +* specific prior written permission of WIDE Project and * +* NICT. * +* * +* 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 OWNER 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 <signal.h> + +/* See doc/dbg_loglevel.conf.sample for more details about the features of this extension */ +#include "dbg_loglevel.h" + +static char *config_file = NULL; +#define MODULE_NAME "dbg_loglevel" + +static void sig_hdlr(void) +{ + int old_log_level; + + old_log_level = fd_g_debug_lvl; + if (dbg_loglevel_conf_handle(config_file) != 0) { + fd_log_error("%s: error during config file reload, restoring previous value", MODULE_NAME); + fd_g_debug_lvl = old_log_level; + } + fd_log_notice("%s: reloaded configuration, log level now %d", MODULE_NAME, fd_g_debug_lvl); +} + +/* entry point */ +static int dbg_loglevel_entry(char * conffile) +{ + TRACE_ENTRY("%p", conffile); + + config_file = conffile; + + /* default set by main program */ + /* fd_g_debug_lvl = FD_LOG_NOTICE; */ + + /* Parse the configuration file */ + CHECK_FCT(dbg_loglevel_conf_handle(config_file)); + + /* Register reload callback */ + CHECK_FCT(fd_event_trig_regcb(SIGUSR1, MODULE_NAME, sig_hdlr)); + + fd_log_notice("Extension 'Loglevel' initialized with log level %d", fd_g_debug_lvl); + + /* We're done */ + return 0; +} + +/* Unload */ +void fd_ext_fini(void) +{ + TRACE_ENTRY(); + + /* Nothing to do */ + return ; +} + +EXTENSION_ENTRY(MODULE_NAME, dbg_loglevel_entry);