/*****************************************************************************\
 *  update_step.c - update step functions for scontrol.
 *****************************************************************************
 *  Copyright (C) 2002-2007 The Regents of the University of California.
 *  Copyright (C) 2008-2010 Lawrence Livermore National Security.
 *  Produced at Lawrence Livermore National Laboratory (cf, DISCLAIMER).
 *  Written by Morris Jette <jette1@llnl.gov>
 *  CODE-OCEC-09-009. All rights reserved.
 *
 *  This file is part of SLURM, a resource management program.
 *  For details, see <https://computing.llnl.gov/linux/slurm/>.
 *  Please also read the included file: DISCLAIMER.
 *
 *  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.
 *
 *  In addition, as a special exception, the copyright holders give permission
 *  to link the code of portions of this program with the OpenSSL library under
 *  certain conditions as described in each individual source file, and
 *  distribute linked combinations including the two. You must obey the GNU
 *  General Public License in all respects for all of the code used other than
 *  OpenSSL. If you modify file(s) with this exception, you may extend this
 *  exception to your version of the file(s), but you are not obligated to do
 *  so. If you do not wish to do so, delete this exception statement from your
 *  version.  If you delete this exception statement from all source files in
 *  the program, then also delete it here.
 *
 *  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.,
 *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA.
\*****************************************************************************/

#include "scontrol.h"
#include "src/common/proc_args.h"

/*
 * scontrol_update_step - update the slurm step configuration per the supplied
 *	arguments
 * IN argc - count of arguments
 * IN argv - list of arguments
 * RET 0 if no slurm error, errno otherwise. parsing error prints
 *			error message and returns 0
 */
extern int scontrol_update_step (int argc, char *argv[])
{
	int i, update_cnt = 0;
	char *tag, *val;
	int taglen, vallen;
	step_update_request_msg_t step_msg;

	slurm_init_update_step_msg (&step_msg);

	for (i=0; i<argc; i++) {
		tag = argv[i];
		val = strchr(argv[i], '=');
		if (val) {
			taglen = val - argv[i];
			val++;
			vallen = strlen(val);
		} else {
			exit_code = 1;
			fprintf (stderr, "Invalid input: %s\n", argv[i]);
			fprintf (stderr, "Request aborted\n");
			return -1;
		}

		if (strncasecmp(tag, "StepId", MAX(taglen, 4)) == 0) {
			char *end_ptr;
			step_msg.job_id = (uint32_t) strtol(val, &end_ptr, 10);
			if (end_ptr[0] == '.') {
				step_msg.step_id = (uint32_t)
					strtol(end_ptr+1, (char **) NULL, 10);
			} else if (end_ptr[0] != '\0') {
				exit_code = 1;
				fprintf (stderr, "Invalid StepID parameter: "
					 "%s\n", argv[i]);
				fprintf (stderr, "Request aborted\n");
				return 0;
			} /* else apply to all steps of this job_id */
		}
		else if (strncasecmp(tag, "TimeLimit", MAX(taglen, 2)) == 0) {
			int new_limit = time_str2mins(val);
			if ((new_limit < 0) && (new_limit != INFINITE)) {
				error("Invalid TimeLimit value");
				exit_code = 1;
				return 0;
			}
			step_msg.time_limit = new_limit;
			update_cnt++;
		}
		else {
			exit_code = 1;
			fprintf (stderr, "Update of this parameter is not "
				 "supported: %s\n", argv[i]);
			fprintf (stderr, "Request aborted\n");
			return 0;
		}
	}

	if (update_cnt == 0) {
		exit_code = 1;
		fprintf (stderr, "No changes specified\n");
		return 0;
	}

	if (slurm_update_step(&step_msg))
		return slurm_get_errno ();
	else
		return 0;
}