/*********************************************************************************************************
* Software License Agreement (BSD License)                                                               *
* Author: Sebastien Decugis <sdecugis@nict.go.jp>							 *
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* Copyright (c) 2009, WIDE Project and NICT								 *
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/* 
 * Debug-only extension for routing module; 
 * displays state information at the end of routing information process.
 */
#include <freeDiameter/extension.h>

static struct fd_rt_fwd_hdl * fwd_hdl = NULL;
static struct fd_rt_out_hdl * out_hdl = NULL;

/* Proxying debug callback */
static int rtdebug_fwd_cb(void * cbdata, struct msg ** msg)
{
	TRACE_ENTRY("%p %p", cbdata, msg);
	
	fd_log_debug("[rt_debug] FWD routing message: %p\n", msg ? *msg : NULL);
	if (msg)
		fd_msg_dump_walk(INFO, *msg);
	
	return 0;
}

/* Path selection debug callback */
static int rtdebug_out_cb(void * cbdata, struct msg * msg, struct fd_list * candidates)
{
	struct fd_list * li;
	
	TRACE_ENTRY("%p %p %p", cbdata, msg, candidates);
	
	fd_log_debug("[rt_debug] OUT routing message: %p\n", msg);
	fd_msg_dump_walk(INFO, msg);
	fd_log_debug("[rt_debug] Current list of candidates (%p)\n", msg);
	
	for (li = candidates->next; li != candidates; li = li->next) {
		struct rtd_candidate *c = (struct rtd_candidate *) li;
		fd_log_debug("[rt_debug]   - %d\t%s\n", c->score, c->diamid);
	}
	
	return 0;
}

/* Register the callbacks to the daemon */
static int rtdebug_main(char * conffile)
{
	TRACE_ENTRY("%p", conffile);
	
	CHECK_FCT( fd_rt_fwd_register ( rtdebug_fwd_cb, NULL, RT_FWD_ALL, &fwd_hdl ) );
	CHECK_FCT( fd_rt_out_register ( rtdebug_out_cb, NULL, -1 /* so that it is called late */, &out_hdl ) );

	return 0;
}

/* Cleanup the callbacks */
void fd_ext_fini(void)
{
	TRACE_ENTRY();
	
	/* Unregister the modules */
	CHECK_FCT_DO( fd_rt_fwd_unregister ( fwd_hdl, NULL ), /* continue */ );
	CHECK_FCT_DO( fd_rt_out_unregister ( out_hdl, NULL ), /* continue */ );
	
	return ;
}

/* Define the entry point function */
EXTENSION_ENTRY("rt_debug", rtdebug_main);