/*****************************************************************************\
 *  mysql_jobcomp_process.c - functions the processing of
 *                               information from the mysql jobcomp
 *                               storage.
 *****************************************************************************
 *
 *  Copyright (C) 2004-2007 The Regents of the University of California.
 *  Produced at Lawrence Livermore National Laboratory (cf, DISCLAIMER).
 *  Written by Danny Auble <da@llnl.gov>
 *
 *  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.
 *
 *  This file is patterned after jobcomp_linux.c, written by Morris Jette and
 *  Copyright (C) 2002 The Regents of the University of California.
\*****************************************************************************/

#include <stdlib.h>
#include "src/common/parse_time.h"
#include "src/common/xstring.h"
#include "mysql_jobcomp_process.h"

extern list_t *mysql_jobcomp_process_get_jobs(slurmdb_job_cond_t *job_cond)
{

	char *query = NULL;
	char *extra = NULL;
	char *tmp = NULL;
	char *selected_part = NULL;
	slurm_selected_step_t *selected_step = NULL;
	list_itr_t *itr = NULL;
	int set = 0;
	MYSQL_RES *result = NULL;
	MYSQL_ROW row;
	int i;
	jobcomp_job_rec_t *job = NULL;
	char time_str[256];
	list_t *job_list = list_create(jobcomp_destroy_job);

	if (job_cond->step_list && list_count(job_cond->step_list)) {
		set = 0;
		xstrcat(extra, " where (");
		itr = list_iterator_create(job_cond->step_list);
		while ((selected_step = list_next(itr))) {
			if (set)
				xstrcat(extra, " || ");
			tmp = xstrdup_printf("jobid=%u",
					     selected_step->step_id.job_id);
			xstrcat(extra, tmp);
			set = 1;
			xfree(tmp);
		}
		list_iterator_destroy(itr);
		xstrcat(extra, ")");
	}

	if (job_cond->partition_list && list_count(job_cond->partition_list)) {
		set = 0;
		if (extra)
			xstrcat(extra, " && (");
		else
			xstrcat(extra, " where (");

		itr = list_iterator_create(job_cond->partition_list);
		while ((selected_part = list_next(itr))) {
			if (set)
				xstrcat(extra, " || ");
			tmp = xstrdup_printf("`partition`='%s'",
					      selected_part);
			xstrcat(extra, tmp);
			set = 1;
			xfree(tmp);
		}
		list_iterator_destroy(itr);
		xstrcat(extra, ")");
	}

	i = 0;
	while (jobcomp_table_fields[i].name) {
		if (i)
			xstrcat(tmp, ", ");
		xstrfmtcat(tmp, "`%s`", jobcomp_table_fields[i].name);
		i++;
	}

	query = xstrdup_printf("select %s from %s", tmp, jobcomp_table);
	xfree(tmp);

	if (extra) {
		xstrcat(query, extra);
		xfree(extra);
	}

	//info("query = %s", query);
	if (!(result =
	     mysql_db_query_ret(jobcomp_mysql_conn, query, 0))) {
		xfree(query);
		FREE_NULL_LIST(job_list);
		return NULL;
	}
	xfree(query);

	while ((row = mysql_fetch_row(result))) {
		time_t start_time = atoi(row[JOBCOMP_REQ_STARTTIME]);
		time_t end_time = atoi(row[JOBCOMP_REQ_ENDTIME]);

		job = xmalloc(sizeof(jobcomp_job_rec_t));
		if (row[JOBCOMP_REQ_JOBID])
			job->jobid = slurm_atoul(row[JOBCOMP_REQ_JOBID]);
		job->partition = xstrdup(row[JOBCOMP_REQ_PARTITION]);
		slurm_make_time_str(&start_time,
				    time_str,
				    sizeof(time_str));

		job->start_time = xstrdup(time_str);
		slurm_make_time_str(&end_time,
				    time_str,
				    sizeof(time_str));
		job->end_time = xstrdup(time_str);

		if (end_time && start_time && start_time < end_time)
			job->elapsed_time = end_time - start_time;
		else
			job->elapsed_time = 0;

		if (row[JOBCOMP_REQ_UID])
			job->uid = slurm_atoul(row[JOBCOMP_REQ_UID]);
		job->uid_name = xstrdup(row[JOBCOMP_REQ_USER_NAME]);
		if (row[JOBCOMP_REQ_GID])
			job->gid = slurm_atoul(row[JOBCOMP_REQ_GID]);
		job->gid_name = xstrdup(row[JOBCOMP_REQ_GROUP_NAME]);
		job->jobname = xstrdup(row[JOBCOMP_REQ_NAME]);
		job->nodelist = xstrdup(row[JOBCOMP_REQ_NODELIST]);
		if (row[JOBCOMP_REQ_NODECNT])
			job->node_cnt = slurm_atoul(row[JOBCOMP_REQ_NODECNT]);
		if (row[JOBCOMP_REQ_STATE]) {
			i = atoi(row[JOBCOMP_REQ_STATE]);
			job->state = xstrdup(job_state_string(i));
		}
		job->timelimit = xstrdup(row[JOBCOMP_REQ_TIMELIMIT]);
		if (row[JOBCOMP_REQ_MAXPROCS])
			job->max_procs = slurm_atoul(row[JOBCOMP_REQ_MAXPROCS]);
		job->connection = xstrdup(row[JOBCOMP_REQ_CONNECTION]);
		job->reboot = xstrdup(row[JOBCOMP_REQ_REBOOT]);
		job->rotate = xstrdup(row[JOBCOMP_REQ_ROTATE]);
		job->geo = xstrdup(row[JOBCOMP_REQ_GEOMETRY]);
		job->bg_start_point = xstrdup(row[JOBCOMP_REQ_START]);
		job->blockid = xstrdup(row[JOBCOMP_REQ_BLOCKID]);
		list_append(job_list, job);
	}

	mysql_free_result(result);

	return job_list;
}