/*********************************************************************************************************
* Software License Agreement (BSD License)                                                               *
* Author: Sebastien Decugis <sdecugis@nict.go.jp>							 *
*													 *
* Copyright (c) 2009, WIDE Project and NICT								 *
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* Redistribution and use of this software in source and binary forms, with or without modification, are  *
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*   copyright notice, this list of conditions and the 							 *
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*   names of its contributors may be used to endorse or 						 *
*   promote products derived from this software without 						 *
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*   NICT.												 *
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*********************************************************************************************************/

/* Monitoring extension:
 - periodically display queues and peers information
 - upon SIGUSR1, display additional debug information
 */

#include <freeDiameter/extension.h>
#include <signal.h>

static int 	 monitor_main(char * conffile);

EXTENSION_ENTRY("monitor", monitor_main);

/* Function called on receipt of SIGUSR1 */
static void got_sig(int signal)
{
	CHECK_FCT_DO(fd_event_send(fd_g_config->cnf_main_ev, FDEV_DUMP_DICT, NULL), /* continue */);
	CHECK_FCT_DO(fd_event_send(fd_g_config->cnf_main_ev, FDEV_DUMP_CONFIG, NULL), /* continue */);
	CHECK_FCT_DO(fd_event_send(fd_g_config->cnf_main_ev, FDEV_DUMP_EXT, NULL), /* continue */);
}
/* Thread to display periodical debug information */
static pthread_t thr;
static void * mn_thr(void * arg)
{
	sigset_t sig;
	struct sigaction act;
	fd_log_threadname("Monitor thread");
	
	/* Catch signal SIGUSR1 */
	memset(&act, 0, sizeof(act));
	act.sa_handler = got_sig;
	CHECK_SYS_DO( sigaction(SIGUSR1, &act, NULL), /* conitnue */ );
	sigemptyset(&sig);
	sigaddset(&sig, SIGUSR1);
	CHECK_POSIX_DO(  pthread_sigmask(SIG_UNBLOCK, &sig, NULL), /* conitnue */  );
	
	/* Loop */
	while (1) {
		sleep(60);
		TRACE_DEBUG(NONE, "Monitor information");
		CHECK_FCT_DO(fd_event_send(fd_g_config->cnf_main_ev, FDEV_DUMP_QUEUES, NULL), /* continue */);
		CHECK_FCT_DO(fd_event_send(fd_g_config->cnf_main_ev, FDEV_DUMP_PEERS, NULL), /* continue */);
		pthread_testcancel();
	}
	
	return NULL;
}

static int monitor_main(char * conffile)
{
	TRACE_ENTRY("%p", conffile);
	CHECK_POSIX( pthread_create( &thr, NULL, mn_thr, NULL ) );
	return 0;
}

void fd_ext_fini(void)
{
	TRACE_ENTRY();
	CHECK_FCT_DO( fd_thr_term(&thr), /* continue */ );
	return ;
}