/****************************************************************************\
 *  config_info.c - get/print the system configuration information of slurm
 *****************************************************************************
 *  Copyright (C) 2002 The Regents of the University of California.
 *  Produced at Lawrence Livermore National Laboratory (cf, DISCLAIMER).
 *  Written by Moe Jette <jette1@llnl.gov> and Kevin Tew <tew1@llnl.gov.
 *  UCRL-CODE-2002-040.
 *  
 *  This file is part of SLURM, a resource management program.
 *  For details, see <http://www.llnl.gov/linux/slurm/>.
 *  
 *  SLURM 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.
 *  
 *  SLURM 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 SLURM; if not, write to the Free Software Foundation, Inc.,
 *  59 Temple Place, Suite 330, Boston, MA  02111-1307  USA.
\*****************************************************************************/

#ifdef HAVE_CONFIG_H
#  include "config.h"
#endif

#include <errno.h>
#include <stdio.h>

#include <slurm/slurm.h>

#include "src/common/slurm_protocol_api.h"

/*
 * slurm_print_ctl_conf - output the contents of slurm control configuration 
 *	message as loaded using slurm_load_ctl_conf
 * IN out - file to write to
 * IN slurm_ctl_conf_ptr - slurm control configuration pointer
 */
void slurm_print_ctl_conf ( FILE* out, 
                            slurm_ctl_conf_info_msg_t * slurm_ctl_conf_ptr )
{
	char time_str[16];

	if ( slurm_ctl_conf_ptr == NULL )
		return ;

	make_time_str ((time_t *)&slurm_ctl_conf_ptr->last_update, time_str);
	fprintf(out, "Configuration data as of %s\n", time_str);
	fprintf(out, "AuthType          = %s\n", 
		slurm_ctl_conf_ptr->authtype);
	fprintf(out, "BackupAddr        = %s\n", 
		slurm_ctl_conf_ptr->backup_addr);
	fprintf(out, "BackupController  = %s\n", 
		slurm_ctl_conf_ptr->backup_controller);
	fprintf(out, "ControlAddr       = %s\n", 
		slurm_ctl_conf_ptr->control_addr);
	fprintf(out, "ControlMachine    = %s\n", 
		slurm_ctl_conf_ptr->control_machine);
	fprintf(out, "Epilog            = %s\n", 
		slurm_ctl_conf_ptr->epilog);
	fprintf(out, "FastSchedule      = %u\n", 
		slurm_ctl_conf_ptr->fast_schedule);
	fprintf(out, "FirstJobId        = %u\n", 
		slurm_ctl_conf_ptr->first_job_id);
	fprintf(out, "NodeHashBase      = %u\n", 
		slurm_ctl_conf_ptr->hash_base);
	fprintf(out, "HeartbeatInterval = %u\n", 
		slurm_ctl_conf_ptr->heartbeat_interval);
	fprintf(out, "InactiveLimit     = %u\n", 
		slurm_ctl_conf_ptr->inactive_limit);
	fprintf(out, "JobCredPrivateKey = %s\n", 
		slurm_ctl_conf_ptr->job_credential_private_key);
	fprintf(out, "JobCredPublicKey  = %s\n", 
		slurm_ctl_conf_ptr->job_credential_public_certificate);
	fprintf(out, "KillWait          = %u\n", 
		slurm_ctl_conf_ptr->kill_wait);
	fprintf(out, "PluginDir         = %s\n", 
		slurm_ctl_conf_ptr->plugindir);
	fprintf(out, "Prioritize        = %s\n", 
		slurm_ctl_conf_ptr->prioritize);
	fprintf(out, "Prolog            = %s\n", 
		slurm_ctl_conf_ptr->prolog);
	fprintf(out, "ReturnToService   = %u\n", 
		slurm_ctl_conf_ptr->ret2service);
	fprintf(out, "SlurmUser         = %s(%u)\n", 
		slurm_ctl_conf_ptr->slurm_user_name,
		slurm_ctl_conf_ptr->slurm_user_id);
	fprintf(out, "SlurmctldDebug    = %u\n", 
		slurm_ctl_conf_ptr->slurmctld_debug);
	fprintf(out, "SlurmctldLogFile  = %s\n", 
		slurm_ctl_conf_ptr->slurmctld_logfile);
	fprintf(out, "SlurmctldPidFile  = %s\n", 
		slurm_ctl_conf_ptr->slurmctld_pidfile);
	fprintf(out, "SlurmctldPort     = %u\n", 
		slurm_ctl_conf_ptr->slurmctld_port);
	fprintf(out, "SlurmctldTimeout  = %u\n", 
		slurm_ctl_conf_ptr->slurmctld_timeout);
	fprintf(out, "SlurmdDebug       = %u\n", 
		slurm_ctl_conf_ptr->slurmd_debug);
	fprintf(out, "SlurmdLogFile     = %s\n", 
		slurm_ctl_conf_ptr->slurmd_logfile);
	fprintf(out, "SlurmdPidFile     = %s\n", 
		slurm_ctl_conf_ptr->slurmd_pidfile);
	fprintf(out, "SlurmdPort        = %u\n", 
		slurm_ctl_conf_ptr->slurmd_port);
	fprintf(out, "SlurmdSpoolDir    = %s\n", 
		slurm_ctl_conf_ptr->slurmd_spooldir);
	fprintf(out, "SlurmdTimeout     = %u\n", 
		slurm_ctl_conf_ptr->slurmd_timeout);
	fprintf(out, "SLURM_CONFIG_FILE = %s\n", 
		slurm_ctl_conf_ptr->slurm_conf);
	fprintf(out, "StateSaveLocation = %s\n", 
		slurm_ctl_conf_ptr->state_save_location);
	fprintf(out, "TmpFS             = %s\n", 
		slurm_ctl_conf_ptr->tmp_fs);
}

/*
 * slurm_load_ctl_conf - issue RPC to get slurm control configuration  
 *	information if changed since update_time 
 * IN update_time - time of current configuration data
 * IN slurm_ctl_conf_ptr - place to store slurm control configuration 
 *	pointer
 * RET 0 on success or slurm error code
 * NOTE: free the response using slurm_free_ctl_conf
 */
int
slurm_load_ctl_conf (time_t update_time, 
			slurm_ctl_conf_t **slurm_ctl_conf_ptr )
{
	int msg_size ;
	int rc ;
	slurm_fd sockfd ;
	slurm_msg_t request_msg ;
	slurm_msg_t response_msg ;
        last_update_msg_t last_time_msg ; 
	return_code_msg_t * slurm_rc_msg ;
	
        /* init message connection for message communication with controller */
	if ( ( sockfd = slurm_open_controller_conn ( ) ) 
			== SLURM_SOCKET_ERROR ) {
		slurm_seterrno ( SLURM_COMMUNICATIONS_CONNECTION_ERROR );
		return SLURM_SOCKET_ERROR ;
	}
	/* send request message */
	last_time_msg . last_update = update_time ;
	request_msg . msg_type = REQUEST_BUILD_INFO ;
	request_msg . data = &last_time_msg ;
	if ( ( rc = slurm_send_controller_msg ( sockfd , & request_msg ) ) 
			== SLURM_SOCKET_ERROR ) {
		slurm_seterrno ( SLURM_COMMUNICATIONS_SEND_ERROR );
		return SLURM_SOCKET_ERROR ;
	}
	
	/* receive message */
	if ( ( msg_size = slurm_receive_msg ( sockfd , & response_msg ) )
			 == SLURM_SOCKET_ERROR )
		return SLURM_SOCKET_ERROR ;
	
	/* shutdown message connection */
	if ( ( rc = slurm_shutdown_msg_conn ( sockfd ) ) 
			== SLURM_SOCKET_ERROR )
		return SLURM_SOCKET_ERROR ;	
	if ( msg_size )
		return msg_size;

	switch ( response_msg . msg_type )
        {
                case RESPONSE_BUILD_INFO:
                        *slurm_ctl_conf_ptr = 
				( slurm_ctl_conf_info_msg_t * )
				response_msg . data ; 
        		return SLURM_PROTOCOL_SUCCESS ;
                        break ;
		case RESPONSE_SLURM_RC:
			slurm_rc_msg = 
				( return_code_msg_t * ) response_msg . data ;
			rc = slurm_rc_msg->return_code;
			slurm_free_return_code_msg ( slurm_rc_msg );	
			if (rc) {
				slurm_seterrno ( rc );
				return SLURM_PROTOCOL_ERROR;
			}
			break ;
		default:
			slurm_seterrno ( SLURM_UNEXPECTED_MSG_ERROR );
			return SLURM_PROTOCOL_ERROR;
			break ;
	}

        return SLURM_PROTOCOL_SUCCESS ;
}

