src/scontrol/info_part.c

/*****************************************************************************\
 *  info_part.c - partition information functions for scontrol.
 *****************************************************************************
 *  Copyright (C) 2002-2006 The Regents of the University of California.
 *  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://slurm.schedmd.com/>.
 *  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 "src/interfaces/data_parser.h"

#include "scontrol.h"

/* Load current partition table information into *part_buffer_pptr */
extern int
scontrol_load_partitions (partition_info_msg_t **part_buffer_pptr)
{
	int error_code;
	static uint16_t last_show_flags = 0xffff;
	uint16_t show_flags = 0;
	partition_info_msg_t *part_info_ptr = NULL;

	if (all_flag)
		show_flags |= SHOW_ALL;

	if (old_part_info_ptr) {
		if (last_show_flags != show_flags)
			old_part_info_ptr->last_update = (time_t) 0;
		error_code = slurm_load_partitions (
			old_part_info_ptr->last_update,
			&part_info_ptr, show_flags);
		if (error_code == SLURM_SUCCESS)
			slurm_free_partition_info_msg (old_part_info_ptr);
		else if (errno == SLURM_NO_CHANGE_IN_DATA) {
			part_info_ptr = old_part_info_ptr;
			error_code = SLURM_SUCCESS;
			if (quiet_flag == -1)
				printf ("slurm_load_part no change in data\n");
		}
	} else {
		error_code = slurm_load_partitions((time_t) NULL,
						   &part_info_ptr, show_flags);
	}

	if (error_code == SLURM_SUCCESS) {
		old_part_info_ptr = part_info_ptr;
		last_show_flags = show_flags;
		*part_buffer_pptr = part_info_ptr;
	}

	return error_code;
}

/*
 * scontrol_print_part - print the specified partition's information
 * IN partition_name - NULL to print information about all partition
 */
extern void scontrol_print_part(char *partition_name, int argc, char **argv)
{
	int error_code, print_cnt = 0;
	partition_info_msg_t *part_info_ptr = NULL;
	partition_info_t **parts = NULL;

	error_code = scontrol_load_partitions(&part_info_ptr);
	if (error_code) {
		exit_code = 1;
		if (quiet_flag != 1)
			slurm_perror ("slurm_load_partitions error");
		return;
	}

	if (part_info_ptr->record_count) {
		partition_info_t *part_ptr = part_info_ptr->partition_array;
		parts = xcalloc(part_info_ptr->record_count + 1,
				sizeof(*parts));

		for (int i = 0; i < part_info_ptr->record_count; i++) {
			if (partition_name &&
			    xstrcmp(partition_name, part_ptr[i].name))
				continue;

			parts[print_cnt] = &part_ptr[i];
			print_cnt++;

			if (partition_name)
				break;
		}
	}

	if (!mime_type && (quiet_flag == -1)) {
		char time_str[256];
		slurm_make_time_str ((time_t *)&part_info_ptr->last_update,
			       time_str, sizeof(time_str));
		printf ("last_update_time=%s, records=%d\n",
			time_str, part_info_ptr->record_count);
	}

	if (mime_type) {
		int rc;
		partition_info_msg_t msg = {
			.record_count = print_cnt,
			.last_update = part_info_ptr->last_update,
		};
		openapi_resp_partitions_info_msg_t resp = {
			.partitions = &msg,
			.last_update = part_info_ptr->last_update,
		};

		msg.partition_array =
			xcalloc(print_cnt, sizeof(*msg.partition_array));
		for (int i = 0; i < print_cnt; i++)
			msg.partition_array[i] = *parts[i];

		DATA_DUMP_CLI(OPENAPI_PARTITION_RESP, resp, argc, argv, NULL,
			      mime_type, data_parser, rc);

		if (rc)
			exit_code = SLURM_ERROR;

		xfree(msg.partition_array);
	} else {
		for (int i = 0; i < print_cnt; i++)
			slurm_print_partition_info(stdout, parts[i], one_liner);
	}

	if (!mime_type && !print_cnt) {
		if (partition_name) {
			exit_code = 1;
			if (quiet_flag != 1)
				printf ("Partition %s not found\n",
				        partition_name);
		} else if (quiet_flag != 1)
			printf ("No partitions in the system\n");
	}

	xfree(parts);
}