[lttng-tools.git] / src / bin / lttng / commands / enable_rotation.c

/*
 * Copyright (C) 2017 Julien Desfossez <jdesfossez@efficios.com>
 *
 * SPDX-License-Identifier: GPL-2.0-only
 *
 */

#define _LGPL_SOURCE
#include <popt.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <unistd.h>
#include <inttypes.h>
#include <ctype.h>

#include <common/sessiond-comm/sessiond-comm.h>
#include <common/mi-lttng.h>
#include <common/utils.h>

#include "../command.h"
#include <lttng/lttng.h>

static char *opt_session_name;
static struct mi_writer *writer;

#ifdef LTTNG_EMBED_HELP
static const char help_msg[] =
#include <lttng-enable-rotation.1.h>
;
#endif

enum {
	OPT_HELP = 1,
	OPT_LIST_OPTIONS,
	OPT_TIMER,
	OPT_SIZE,
};

static struct poptOption long_options[] = {
	/* longName, shortName, argInfo, argPtr, value, descrip, argDesc */
	{"help",        'h', POPT_ARG_NONE, 0, OPT_HELP, 0, 0},
	{"list-options", 0, POPT_ARG_NONE, NULL, OPT_LIST_OPTIONS, NULL, NULL},
	{"session",     's', POPT_ARG_STRING, &opt_session_name, 0, 0, 0},
	{"timer",        0,   POPT_ARG_INT, 0, OPT_TIMER, 0, 0},
	{"size",         0,   POPT_ARG_INT, 0, OPT_SIZE, 0, 0},
	{0, 0, 0, 0, 0, 0, 0}
};

static const char *schedule_type_str[] = {
	[LTTNG_ROTATION_SCHEDULE_TYPE_PERIODIC] = "periodic",
	[LTTNG_ROTATION_SCHEDULE_TYPE_SIZE_THRESHOLD] = "size-based",
};

static enum cmd_error_code add_schedule(const char *session_name,
		enum lttng_rotation_schedule_type schedule_type, uint64_t value)
{
	enum cmd_error_code ret = CMD_SUCCESS;
	struct lttng_rotation_schedule *schedule = NULL;
	enum lttng_rotation_status status;
	const char *schedule_type_name;

	switch (schedule_type) {
	case LTTNG_ROTATION_SCHEDULE_TYPE_PERIODIC:
		schedule = lttng_rotation_schedule_periodic_create();
		if (!schedule) {
			ret = CMD_ERROR;
			goto end;
		}
		status = lttng_rotation_schedule_periodic_set_period(schedule,
				value);
		break;
	case LTTNG_ROTATION_SCHEDULE_TYPE_SIZE_THRESHOLD:
		schedule = lttng_rotation_schedule_size_threshold_create();
		if (!schedule) {
			ret = CMD_ERROR;
			goto end;
		}
		status = lttng_rotation_schedule_size_threshold_set_threshold(
				schedule, value);
		break;
	default:
		ERR("Unknown schedule type");
		abort();
	}

	schedule_type_name = schedule_type_str[schedule_type];

	switch (status) {
	case LTTNG_ROTATION_STATUS_OK:
		break;
	case LTTNG_ROTATION_STATUS_INVALID:
		ERR("Invalid value for %s option", schedule_type_name);
		ret = CMD_ERROR;
		goto end;
	default:
		ERR("Unknown error occurred setting %s rotation schedule",
				schedule_type_name);
		ret = CMD_ERROR;
		goto end;
	}

	status = lttng_session_add_rotation_schedule(session_name, schedule);
	switch (status) {
	case LTTNG_ROTATION_STATUS_OK:
		ret = CMD_SUCCESS;
		switch (schedule_type) {
		case LTTNG_ROTATION_SCHEDULE_TYPE_PERIODIC:
			MSG("Enabled %s rotations every %" PRIu64 " %s on session %s",
					schedule_type_name, value, USEC_UNIT, session_name);
			break;
		case LTTNG_ROTATION_SCHEDULE_TYPE_SIZE_THRESHOLD:
			MSG("Enabled %s rotations every %" PRIu64 " bytes written on session %s",
					schedule_type_name, value, session_name);
			break;
		default:
			abort();
		}
		break;
	case LTTNG_ROTATION_STATUS_INVALID:
		ERR("Invalid parameter for %s rotation schedule",
				schedule_type_name);
		ret = CMD_ERROR;
		break;
	case LTTNG_ROTATION_STATUS_SCHEDULE_ALREADY_SET:
		ERR("A %s rotation schedule is already set on session %s",
				schedule_type_name,
				session_name);
		ret = CMD_ERROR;
		break;
	case LTTNG_ROTATION_STATUS_ERROR:
	default:
		ERR("Failed to enable %s rotation schedule on session %s",
				schedule_type_name,
				session_name);
		ret = CMD_ERROR;
		break;
	}

	if (lttng_opt_mi) {
		int mi_ret;

		mi_ret = mi_lttng_rotation_schedule_result(writer,
				schedule, ret == CMD_SUCCESS);
		if (mi_ret < 0) {
			ret = CMD_ERROR;
			goto end;
		}
	}

end:
	lttng_rotation_schedule_destroy(schedule);
	return ret;
}

/*
 *  cmd_enable_rotation
 *
 *  The 'enable-rotation <options>' first level command
 */
int cmd_enable_rotation(int argc, const char **argv)
{
	int popt_ret, opt, ret = 0;
	enum cmd_error_code cmd_ret = CMD_SUCCESS;
	static poptContext pc;
	char *session_name = NULL;
	char *opt_arg = NULL;
	bool free_session_name = false;
	uint64_t timer_us = 0, size_bytes = 0;
	bool periodic_rotation = false, size_rotation = false;

	pc = poptGetContext(NULL, argc, argv, long_options, 0);
	popt_ret = poptReadDefaultConfig(pc, 0);
	if (popt_ret) {
		ERR("poptReadDefaultConfig");
		goto error;
	}

	while ((opt = poptGetNextOpt(pc)) != -1) {
		switch (opt) {
		case OPT_HELP:
			SHOW_HELP();
			goto end;
		case OPT_LIST_OPTIONS:
			list_cmd_options(stdout, long_options);
			goto end;
		case OPT_TIMER:
			errno = 0;
			opt_arg = poptGetOptArg(pc);
			if (errno != 0 || !isdigit(opt_arg[0])) {
				ERR("Invalid value for --timer option: %s", opt_arg);
				goto error;
			}
			if (utils_parse_time_suffix(opt_arg, &timer_us) < 0) {
				ERR("Invalid value for --timer option: %s", opt_arg);
				goto error;
			}
			if (periodic_rotation) {
				ERR("Only one periodic rotation schedule may be set on a session.");
				goto error;
			}
			periodic_rotation = true;
			break;
		case OPT_SIZE:
			errno = 0;
			opt_arg = poptGetOptArg(pc);
			if (utils_parse_size_suffix(opt_arg, &size_bytes) < 0) {
				ERR("Invalid value for --size option: %s", opt_arg);
				goto error;
			}
			if (size_rotation) {
				ERR("Only one size-based rotation schedule may be set on a session.");
				goto error;
			}
			size_rotation = true;
			break;
		default:
			cmd_ret = CMD_UNDEFINED;
			goto end;
		}
	}

	if (opt_session_name == NULL) {
		session_name = get_session_name();
		if (session_name == NULL) {
			goto error;
		}
		free_session_name = true;
	} else {
		session_name = opt_session_name;
	}

	/* Mi check */
	if (lttng_opt_mi) {
		writer = mi_lttng_writer_create(fileno(stdout), lttng_opt_mi);
		if (!writer) {
			goto error;
		}

		/* Open command element */
		ret = mi_lttng_writer_command_open(writer,
				mi_lttng_element_command_enable_rotation);
		if (ret) {
			goto error;
		}

		/* Open output element */
		ret = mi_lttng_writer_open_element(writer,
				mi_lttng_element_command_output);
		if (ret) {
			goto error;
		}
	}

	if (!periodic_rotation && !size_rotation) {
		ERR("No session rotation schedule parameter provided.");
		cmd_ret = CMD_ERROR;
		goto close_command;
	}

	if (lttng_opt_mi) {
		ret = mi_lttng_writer_open_element(writer,
				mi_lttng_element_rotation_schedule_results);
		if (ret) {
			goto error;
		}

		ret = mi_lttng_writer_write_element_string(writer,
				mi_lttng_element_session_name,
				session_name);
		if (ret) {
			goto error;
		}
	}

	if (periodic_rotation) {
		/*
		 * Continue processing even on error as multiple schedules can
		 * be specified at once.
		 */
		cmd_ret = add_schedule(session_name,
				LTTNG_ROTATION_SCHEDULE_TYPE_PERIODIC,
				timer_us);
	}

	if (size_rotation) {
		enum cmd_error_code tmp_ret;

		/* Don't overwrite cmd_ret if it already indicates an error. */
		tmp_ret = add_schedule(session_name,
				LTTNG_ROTATION_SCHEDULE_TYPE_SIZE_THRESHOLD,
				size_bytes);
		cmd_ret = cmd_ret ? cmd_ret : tmp_ret;
	}

	if (lttng_opt_mi) {
		/* Close rotation schedule results element */
		ret = mi_lttng_writer_close_element(writer);
		if (ret) {
			goto error;
		}
	}

close_command:
	/* Mi closing */
	if (lttng_opt_mi) {
		/* Close output element */
		ret = mi_lttng_writer_close_element(writer);
		if (ret) {
			goto error;
		}

		/* Success ? */
		ret = mi_lttng_writer_write_element_bool(writer,
				mi_lttng_element_command_success,
				cmd_ret == CMD_SUCCESS);
		if (ret) {
			goto error;
		}

		/* Command element close */
		ret = mi_lttng_writer_command_close(writer);
		if (ret) {
			goto error;
		}
	}

end:
	(void) mi_lttng_writer_destroy(writer);
	poptFreeContext(pc);
	if (free_session_name) {
		free(session_name);
	}
	return cmd_ret;

error:
	cmd_ret = CMD_ERROR;
	goto end;
}
Commit	Line	Data
259c2674	1	/*
ab5be9fa	2	* Copyright (C) 2017 Julien Desfossez <jdesfossez@efficios.com>
259c2674	3	*
ab5be9fa	4	* SPDX-License-Identifier: GPL-2.0-only
259c2674	5	*
259c2674 JD	6	*/
	7
	8	#define _LGPL_SOURCE
	9	#include <popt.h>
	10	#include <stdio.h>
	11	#include <stdlib.h>
	12	#include <string.h>
	13	#include <sys/stat.h>
	14	#include <sys/types.h>
	15	#include <unistd.h>
	16	#include <inttypes.h>
	17	#include <ctype.h>
	18
	19	#include <common/sessiond-comm/sessiond-comm.h>
	20	#include <common/mi-lttng.h>
	21	#include <common/utils.h>
	22
	23	#include "../command.h"
050dd639	24	#include <lttng/lttng.h>
259c2674 JD	25
	26	static char *opt_session_name;
	27	static struct mi_writer *writer;
	28
3ae5c539 JD	29	#ifdef LTTNG_EMBED_HELP
	30	static const char help_msg[] =
	31	#include <lttng-enable-rotation.1.h>
	32	;
	33	#endif
	34
259c2674 JD	35	enum {
	36	OPT_HELP = 1,
	37	OPT_LIST_OPTIONS,
	38	OPT_TIMER,
90936dcf	39	OPT_SIZE,
259c2674 JD	40	};
	41
	42	static struct poptOption long_options[] = {
	43	/* longName, shortName, argInfo, argPtr, value, descrip, argDesc */
	44	{"help", 'h', POPT_ARG_NONE, 0, OPT_HELP, 0, 0},
	45	{"list-options", 0, POPT_ARG_NONE, NULL, OPT_LIST_OPTIONS, NULL, NULL},
	46	{"session", 's', POPT_ARG_STRING, &opt_session_name, 0, 0, 0},
	47	{"timer", 0, POPT_ARG_INT, 0, OPT_TIMER, 0, 0},
90936dcf	48	{"size", 0, POPT_ARG_INT, 0, OPT_SIZE, 0, 0},
259c2674 JD	49	{0, 0, 0, 0, 0, 0, 0}
	50	};
	51
66ea93b1 JG	52	static const char *schedule_type_str[] = {
	53	[LTTNG_ROTATION_SCHEDULE_TYPE_PERIODIC] = "periodic",
	54	[LTTNG_ROTATION_SCHEDULE_TYPE_SIZE_THRESHOLD] = "size-based",
	55	};
259c2674	56
66ea93b1 JG	57	static enum cmd_error_code add_schedule(const char *session_name,
	58	enum lttng_rotation_schedule_type schedule_type, uint64_t value)
	59	{
	60	enum cmd_error_code ret = CMD_SUCCESS;
	61	struct lttng_rotation_schedule *schedule = NULL;
	62	enum lttng_rotation_status status;
	63	const char *schedule_type_name;
259c2674	64
66ea93b1 JG	65	switch (schedule_type) {
	66	case LTTNG_ROTATION_SCHEDULE_TYPE_PERIODIC:
	67	schedule = lttng_rotation_schedule_periodic_create();
	68	if (!schedule) {
	69	ret = CMD_ERROR;
	70	goto end;
259c2674	71	}
66ea93b1 JG	72	status = lttng_rotation_schedule_periodic_set_period(schedule,
	73	value);
	74	break;
	75	case LTTNG_ROTATION_SCHEDULE_TYPE_SIZE_THRESHOLD:
	76	schedule = lttng_rotation_schedule_size_threshold_create();
	77	if (!schedule) {
	78	ret = CMD_ERROR;
	79	goto end;
259c2674	80	}
66ea93b1 JG	81	status = lttng_rotation_schedule_size_threshold_set_threshold(
	82	schedule, value);
	83	break;
	84	default:
	85	ERR("Unknown schedule type");
	86	abort();
259c2674 JD	87	}
259c2674 JD	88
66ea93b1 JG	89	schedule_type_name = schedule_type_str[schedule_type];
	90
	91	switch (status) {
	92	case LTTNG_ROTATION_STATUS_OK:
	93	break;
	94	case LTTNG_ROTATION_STATUS_INVALID:
	95	ERR("Invalid value for %s option", schedule_type_name);
	96	ret = CMD_ERROR;
	97	goto end;
	98	default:
a9577b76	99	ERR("Unknown error occurred setting %s rotation schedule",
66ea93b1 JG	100	schedule_type_name);
	101	ret = CMD_ERROR;
	102	goto end;
90936dcf	103	}
259c2674	104
66ea93b1 JG	105	status = lttng_session_add_rotation_schedule(session_name, schedule);
	106	switch (status) {
	107	case LTTNG_ROTATION_STATUS_OK:
	108	ret = CMD_SUCCESS;
	109	switch (schedule_type) {
	110	case LTTNG_ROTATION_SCHEDULE_TYPE_PERIODIC:
2a1135fa JG	111	MSG("Enabled %s rotations every %" PRIu64 " %s on session %s",
2a1135fa JG	112	schedule_type_name, value, USEC_UNIT, session_name);
66ea93b1 JG	113	break;
	114	case LTTNG_ROTATION_SCHEDULE_TYPE_SIZE_THRESHOLD:
	115	MSG("Enabled %s rotations every %" PRIu64 " bytes written on session %s",
	116	schedule_type_name, value, session_name);
	117	break;
	118	default:
	119	abort();
259c2674	120	}
66ea93b1 JG	121	break;
	122	case LTTNG_ROTATION_STATUS_INVALID:
	123	ERR("Invalid parameter for %s rotation schedule",
	124	schedule_type_name);
	125	ret = CMD_ERROR;
	126	break;
	127	case LTTNG_ROTATION_STATUS_SCHEDULE_ALREADY_SET:
	128	ERR("A %s rotation schedule is already set on session %s",
	129	schedule_type_name,
	130	session_name);
	131	ret = CMD_ERROR;
	132	break;
	133	case LTTNG_ROTATION_STATUS_ERROR:
	134	default:
	135	ERR("Failed to enable %s rotation schedule on session %s",
	136	schedule_type_name,
	137	session_name);
	138	ret = CMD_ERROR;
	139	break;
259c2674 JD	140	}
	141
	142	if (lttng_opt_mi) {
66ea93b1	143	int mi_ret;
259c2674	144
66ea93b1 JG	145	mi_ret = mi_lttng_rotation_schedule_result(writer,
	146	schedule, ret == CMD_SUCCESS);
	147	if (mi_ret < 0) {
	148	ret = CMD_ERROR;
259c2674 JD	149	goto end;
	150	}
	151	}
	152
259c2674	153	end:
66ea93b1	154	lttng_rotation_schedule_destroy(schedule);
259c2674 JD	155	return ret;
	156	}
	157
	158	/*
	159	* cmd_enable_rotation
	160	*
	161	* The 'enable-rotation <options>' first level command
	162	*/
	163	int cmd_enable_rotation(int argc, const char **argv)
	164	{
66ea93b1 JG	165	int popt_ret, opt, ret = 0;
66ea93b1 JG	166	enum cmd_error_code cmd_ret = CMD_SUCCESS;
259c2674 JD	167	static poptContext pc;
	168	char *session_name = NULL;
	169	char *opt_arg = NULL;
259c2674	170	bool free_session_name = false;
66ea93b1 JG	171	uint64_t timer_us = 0, size_bytes = 0;
66ea93b1 JG	172	bool periodic_rotation = false, size_rotation = false;
259c2674 JD	173
	174	pc = poptGetContext(NULL, argc, argv, long_options, 0);
	175	popt_ret = poptReadDefaultConfig(pc, 0);
	176	if (popt_ret) {
259c2674	177	ERR("poptReadDefaultConfig");
66ea93b1	178	goto error;
259c2674 JD	179	}
	180
	181	while ((opt = poptGetNextOpt(pc)) != -1) {
	182	switch (opt) {
	183	case OPT_HELP:
	184	SHOW_HELP();
	185	goto end;
	186	case OPT_LIST_OPTIONS:
	187	list_cmd_options(stdout, long_options);
	188	goto end;
	189	case OPT_TIMER:
	190	errno = 0;
	191	opt_arg = poptGetOptArg(pc);
	192	if (errno != 0 \|\| !isdigit(opt_arg[0])) {
66ea93b1 JG	193	ERR("Invalid value for --timer option: %s", opt_arg);
	194	goto error;
	195	}
	196	if (utils_parse_time_suffix(opt_arg, &timer_us) < 0) {
	197	ERR("Invalid value for --timer option: %s", opt_arg);
	198	goto error;
259c2674	199	}
66ea93b1 JG	200	if (periodic_rotation) {
	201	ERR("Only one periodic rotation schedule may be set on a session.");
	202	goto error;
259c2674	203	}
66ea93b1	204	periodic_rotation = true;
259c2674	205	break;
90936dcf JD	206	case OPT_SIZE:
	207	errno = 0;
	208	opt_arg = poptGetOptArg(pc);
66ea93b1 JG	209	if (utils_parse_size_suffix(opt_arg, &size_bytes) < 0) {
	210	ERR("Invalid value for --size option: %s", opt_arg);
	211	goto error;
90936dcf	212	}
66ea93b1 JG	213	if (size_rotation) {
	214	ERR("Only one size-based rotation schedule may be set on a session.");
	215	goto error;
	216	}
	217	size_rotation = true;
90936dcf	218	break;
259c2674	219	default:
66ea93b1	220	cmd_ret = CMD_UNDEFINED;
259c2674 JD	221	goto end;
	222	}
	223	}
	224
	225	if (opt_session_name == NULL) {
	226	session_name = get_session_name();
	227	if (session_name == NULL) {
66ea93b1	228	goto error;
259c2674 JD	229	}
	230	free_session_name = true;
	231	} else {
	232	session_name = opt_session_name;
	233	}
	234
	235	/* Mi check */
	236	if (lttng_opt_mi) {
	237	writer = mi_lttng_writer_create(fileno(stdout), lttng_opt_mi);
	238	if (!writer) {
66ea93b1	239	goto error;
259c2674 JD	240	}
	241
	242	/* Open command element */
	243	ret = mi_lttng_writer_command_open(writer,
	244	mi_lttng_element_command_enable_rotation);
	245	if (ret) {
66ea93b1	246	goto error;
259c2674 JD	247	}
	248
	249	/* Open output element */
	250	ret = mi_lttng_writer_open_element(writer,
	251	mi_lttng_element_command_output);
	252	if (ret) {
66ea93b1	253	goto error;
259c2674 JD	254	}
	255	}
	256
66ea93b1 JG	257	if (!periodic_rotation && !size_rotation) {
	258	ERR("No session rotation schedule parameter provided.");
	259	cmd_ret = CMD_ERROR;
	260	goto close_command;
259c2674 JD	261	}
259c2674 JD	262
66ea93b1 JG	263	if (lttng_opt_mi) {
	264	ret = mi_lttng_writer_open_element(writer,
	265	mi_lttng_element_rotation_schedule_results);
	266	if (ret) {
	267	goto error;
	268	}
	269
	270	ret = mi_lttng_writer_write_element_string(writer,
	271	mi_lttng_element_session_name,
	272	session_name);
	273	if (ret) {
	274	goto error;
	275	}
259c2674 JD	276	}
259c2674 JD	277
66ea93b1 JG	278	if (periodic_rotation) {
	279	/*
	280	* Continue processing even on error as multiple schedules can
	281	* be specified at once.
	282	*/
	283	cmd_ret = add_schedule(session_name,
	284	LTTNG_ROTATION_SCHEDULE_TYPE_PERIODIC,
	285	timer_us);
	286	}
	287
	288	if (size_rotation) {
a14a81cb	289	enum cmd_error_code tmp_ret;
66ea93b1 JG	290
	291	/* Don't overwrite cmd_ret if it already indicates an error. */
	292	tmp_ret = add_schedule(session_name,
	293	LTTNG_ROTATION_SCHEDULE_TYPE_SIZE_THRESHOLD,
	294	size_bytes);
	295	cmd_ret = cmd_ret ? cmd_ret : tmp_ret;
	296	}
	297
	298	if (lttng_opt_mi) {
	299	/* Close rotation schedule results element */
	300	ret = mi_lttng_writer_close_element(writer);
	301	if (ret) {
	302	goto error;
	303	}
	304	}
	305
	306	close_command:
259c2674 JD	307	/* Mi closing */
259c2674 JD	308	if (lttng_opt_mi) {
66ea93b1	309	/* Close output element */
259c2674 JD	310	ret = mi_lttng_writer_close_element(writer);
259c2674 JD	311	if (ret) {
66ea93b1	312	goto error;
259c2674	313	}
66ea93b1	314
259c2674 JD	315	/* Success ? */
259c2674 JD	316	ret = mi_lttng_writer_write_element_bool(writer,
66ea93b1 JG	317	mi_lttng_element_command_success,
66ea93b1 JG	318	cmd_ret == CMD_SUCCESS);
259c2674	319	if (ret) {
66ea93b1	320	goto error;
259c2674 JD	321	}
	322
	323	/* Command element close */
	324	ret = mi_lttng_writer_command_close(writer);
	325	if (ret) {
66ea93b1	326	goto error;
259c2674 JD	327	}
	328	}
	329
	330	end:
66ea93b1	331	(void) mi_lttng_writer_destroy(writer);
259c2674 JD	332	poptFreeContext(pc);
	333	if (free_session_name) {
	334	free(session_name);
	335	}
66ea93b1 JG	336	return cmd_ret;
	337
	338	error:
	339	cmd_ret = CMD_ERROR;
	340	goto end;
259c2674	341	}