/****************************************************************************\
 *  statistics.c - functions for sdiag command
 *****************************************************************************
 *  Produced at Barcelona Supercomputing Center, December 2011
 *  Written by Alejandro Lucero <alucero@bsc.es>
 *
 *  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 <ctype.h>
#include <errno.h>
#include <stdio.h>

#include "src/slurmctld/agent.h"
#include "src/slurmctld/slurmctld.h"
#include "src/common/list.h"
#include "src/common/pack.h"
#include "src/common/xstring.h"
#include "src/common/slurmdbd_defs.h"

/* Pack all scheduling statistics */
extern buf_t *pack_all_stat(uint16_t protocol_version)
{
	buf_t *buffer;
	int agent_queue_size;
	int agent_count;
	int agent_thread_count;
	int slurmdbd_queue_size = 0;
	time_t now = time(NULL);

	if (acct_storage_g_get_data(acct_db_conn, ACCT_STORAGE_INFO_AGENT_COUNT,
				    &slurmdbd_queue_size) != SLURM_SUCCESS)
		slurmdbd_queue_size = 0;

	buffer = init_buf(BUF_SIZE);
	if (protocol_version >= SLURM_MIN_PROTOCOL_VERSION) {
		pack32(1, buffer); /* please remove on next version */

		pack_time(now, buffer);
		debug3("%s: time = %lu", __func__, last_proc_req_start);
		pack_time(last_proc_req_start, buffer);

		slurm_mutex_lock(&slurmctld_config.thread_count_lock);
		debug3("%s: server_thread_count = %u",
		       __func__, slurmctld_config.server_thread_count);
		pack32(slurmctld_config.server_thread_count, buffer);
		slurm_mutex_unlock(&slurmctld_config.thread_count_lock);

		agent_queue_size = retry_list_size();
		pack32(agent_queue_size, buffer);
		agent_count = get_agent_count();
		pack32(agent_count, buffer);
		agent_thread_count = get_agent_thread_count();
		pack32(agent_thread_count, buffer);
		pack32(slurmdbd_queue_size, buffer);
		pack32(slurmctld_diag_stats.latency, buffer);

		pack32(slurmctld_diag_stats.jobs_submitted, buffer);
		pack32(slurmctld_diag_stats.jobs_started, buffer);
		pack32(slurmctld_diag_stats.jobs_completed, buffer);
		pack32(slurmctld_diag_stats.jobs_canceled, buffer);
		pack32(slurmctld_diag_stats.jobs_failed, buffer);

		pack32(slurmctld_diag_stats.jobs_pending, buffer);
		pack32(slurmctld_diag_stats.jobs_running, buffer);
		pack_time(slurmctld_diag_stats.job_states_ts, buffer);

		pack32(slurmctld_diag_stats.schedule_cycle_max, buffer);
		pack32(slurmctld_diag_stats.schedule_cycle_last, buffer);
		pack32(slurmctld_diag_stats.schedule_cycle_sum, buffer);
		pack32(slurmctld_diag_stats.schedule_cycle_counter, buffer);
		pack32(slurmctld_diag_stats.schedule_cycle_depth, buffer);
		pack32_array(slurmctld_diag_stats.schedule_exit,
			     SCHEDULE_EXIT_COUNT, buffer);
		pack32(slurmctld_diag_stats.schedule_queue_len, buffer);

		pack32(slurmctld_diag_stats.backfilled_jobs, buffer);
		pack32(slurmctld_diag_stats.last_backfilled_jobs, buffer);
		pack32(slurmctld_diag_stats.bf_cycle_counter, buffer);
		pack64(slurmctld_diag_stats.bf_cycle_sum, buffer);
		pack32(slurmctld_diag_stats.bf_cycle_last, buffer);
		pack32(slurmctld_diag_stats.bf_last_depth, buffer);
		pack32(slurmctld_diag_stats.bf_last_depth_try, buffer);

		pack32(slurmctld_diag_stats.bf_queue_len, buffer);
		pack32(slurmctld_diag_stats.bf_cycle_max, buffer);
		pack_time(slurmctld_diag_stats.bf_when_last_cycle, buffer);
		pack32(slurmctld_diag_stats.bf_depth_sum, buffer);
		pack32(slurmctld_diag_stats.bf_depth_try_sum, buffer);
		pack32(slurmctld_diag_stats.bf_queue_len_sum, buffer);
		pack32(slurmctld_diag_stats.bf_table_size, buffer);
		pack32(slurmctld_diag_stats.bf_table_size_sum, buffer);

		pack32(slurmctld_diag_stats.bf_active, buffer);
		pack32(slurmctld_diag_stats.backfilled_het_jobs, buffer);
		pack32_array(slurmctld_diag_stats.bf_exit, BF_EXIT_COUNT,
			     buffer);
	}

	return buffer;
}

/* Reset all scheduling statistics
 * level IN - clear backfilled_jobs count if set */
extern void reset_stats(int level)
{
	slurmctld_diag_stats.proc_req_raw = 0;
	slurmctld_diag_stats.proc_req_threads = 0;
	slurmctld_diag_stats.schedule_cycle_max = 0;
	slurmctld_diag_stats.schedule_cycle_sum = 0;
	slurmctld_diag_stats.schedule_cycle_counter = 0;
	slurmctld_diag_stats.schedule_cycle_depth = 0;
	slurmctld_diag_stats.jobs_submitted = 0;
	slurmctld_diag_stats.jobs_started = 0;
	slurmctld_diag_stats.jobs_completed = 0;
	slurmctld_diag_stats.jobs_canceled = 0;
	slurmctld_diag_stats.jobs_failed = 0;

	memset(slurmctld_diag_stats.schedule_exit, 0,
	       sizeof(slurmctld_diag_stats.schedule_exit));

	/* Just resetting this value when reset requested explicitly */
	if (level)
		slurmctld_diag_stats.backfilled_jobs = 0;

	slurmctld_diag_stats.last_backfilled_jobs = 0;
	slurmctld_diag_stats.backfilled_het_jobs = 0;
	slurmctld_diag_stats.bf_cycle_counter = 0;
	slurmctld_diag_stats.bf_cycle_sum = 0;
	slurmctld_diag_stats.bf_cycle_last = 0;
	slurmctld_diag_stats.bf_depth_sum = 0;
	slurmctld_diag_stats.bf_depth_try_sum = 0;
	slurmctld_diag_stats.bf_queue_len = 0;
	slurmctld_diag_stats.bf_queue_len_sum = 0;
	slurmctld_diag_stats.bf_table_size_sum = 0;
	slurmctld_diag_stats.bf_cycle_max = 0;
	slurmctld_diag_stats.bf_last_depth = 0;
	slurmctld_diag_stats.bf_last_depth_try = 0;

	memset(slurmctld_diag_stats.bf_exit, 0,
	       sizeof(slurmctld_diag_stats.bf_exit));

	last_proc_req_start = time(NULL);
}