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

/*
 * Copyright (C) 2011 - David Goulet <david.goulet@polymtl.ca>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License, version 2 only,
 * as published by the Free Software Foundation.
 *
 * This program 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 this program; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */

#define _GNU_SOURCE
#include <assert.h>
#include <popt.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <time.h>
#include <unistd.h>

#include "../command.h"
#include "../utils.h"

#include <common/defaults.h>
#include <common/sessiond-comm/sessiond-comm.h>
#include <common/uri.h>
#include <common/utils.h>

static char *opt_output_path;
static char *opt_session_name;
static char *opt_url;
static char *opt_ctrl_url;
static char *opt_data_url;
static int opt_no_consumer;
static int opt_disable_consumer;

enum {
	OPT_HELP = 1,
	OPT_LIST_OPTIONS,
};

static struct poptOption long_options[] = {
	/* longName, shortName, argInfo, argPtr, value, descrip, argDesc */
	{"help", 'h', POPT_ARG_NONE, NULL, OPT_HELP, NULL, NULL},
	{"output", 'o', POPT_ARG_STRING, &opt_output_path, 0, NULL, NULL},
	{"list-options", 0, POPT_ARG_NONE, NULL, OPT_LIST_OPTIONS, NULL, NULL},
	{"set-uri",        'U', POPT_ARG_STRING, &opt_url, 0, 0, 0},
	{"ctrl-uri",       'C', POPT_ARG_STRING, &opt_ctrl_url, 0, 0, 0},
	{"data-uri",       'D', POPT_ARG_STRING, &opt_data_url, 0, 0, 0},
	{"no-consumer",      0, POPT_ARG_VAL, &opt_no_consumer, 1, 0, 0},
	{"disable-consumer", 0, POPT_ARG_VAL, &opt_disable_consumer, 1, 0, 0},
	{0, 0, 0, 0, 0, 0, 0}
};

/*
 * usage
 */
static void usage(FILE *ofp)
{
	fprintf(ofp, "usage: lttng create [NAME] [OPTIONS] \n");
	fprintf(ofp, "\n");
	fprintf(ofp, "Without a given NAME, the default is 'auto-<yyyymmdd>-<hhmmss>'\n");
	fprintf(ofp, "\n");
	fprintf(ofp, "Options:\n");
	fprintf(ofp, "  -h, --help           Show this help\n");
	fprintf(ofp, "      --list-options   Simple listing of options\n");
	fprintf(ofp, "  -o, --output PATH    Specify output path for traces\n");
	fprintf(ofp, "\n");
	fprintf(ofp, "Extended Options:\n");
	fprintf(ofp, "\n");
	fprintf(ofp, "Using these options, each API call can be controlled individually.\n");
	fprintf(ofp, "\n");
	fprintf(ofp, "  -U, --set-url=URL    Set URL destination of the trace data.\n");
	fprintf(ofp, "                       It is persistent for the session lifetime.\n");
	fprintf(ofp, "                       This will set both data and control URL.\n");
	fprintf(ofp, "                       You can change it with the enable-consumer cmd\n");
	fprintf(ofp, "  -C, --ctrl-url=URL   Set control path URL. (Must use -D also)\n");
	fprintf(ofp, "  -D, --data-url=URL   Set data path URL. (Must use -C also)\n");
	fprintf(ofp, "      --no-consumer    Don't activate a consumer for this session.\n");
	fprintf(ofp, "      --disable-consumer\n");
	fprintf(ofp, "                       Disable consumer for this session.\n");
	fprintf(ofp, "\n");
	fprintf(ofp, "Please refer to the man page (lttng(1)) for more information on network\n");
	fprintf(ofp, "streaming mechanisms and explanation of the control and data port\n");
	fprintf(ofp, "You must have a running remote lttng-relayd for network streaming\n");
	fprintf(ofp, "\n");
	fprintf(ofp, "URL format is has followed:\n");
	fprintf(ofp, "\n");
	fprintf(ofp, "  proto://[HOST|IP][:PORT1[:PORT2]][/TRACE_PATH]\n");
	fprintf(ofp, "\n");
	fprintf(ofp, "  Supported protocols are (proto):\n");
	fprintf(ofp, "  > file://...\n");
	fprintf(ofp, "    Local filesystem full path.\n");
	fprintf(ofp, "\n");
	fprintf(ofp, "  > net[4|6]://...\n");
	fprintf(ofp, "    This will use the default network transport layer which is\n");
	fprintf(ofp, "    TCP for both control (PORT1) and data port (PORT2).\n");
	fprintf(ofp, "    The default ports are respectively 5342 and 5343.\n");
	fprintf(ofp, "\n");
	fprintf(ofp, "  > tcp[4|6]://...\n");
	fprintf(ofp, "    Can only be used with -C and -D together\n");
	fprintf(ofp, "\n");
	fprintf(ofp, "NOTE: IPv6 address MUST be enclosed in brackets '[]' (rfc2732)\n");
	fprintf(ofp, "\n");
	fprintf(ofp, "Examples:\n");
	fprintf(ofp, "    # lttng create -U net://192.168.1.42\n");
	fprintf(ofp, "    Uses TCP and default ports for the given destination.\n");
	fprintf(ofp, "    # lttng create -U net6://[fe80::f66d:4ff:fe53:d220]\n");
	fprintf(ofp, "    Uses TCP, default ports and IPv6.\n");
	fprintf(ofp, "    # lttng create s1 -U net://myhost.com:3229\n");
	fprintf(ofp, "    Set the consumer to the remote HOST on port 3229 for control.\n");
	fprintf(ofp, "\n");
}

/*
 * For a session name, set the consumer URLs.
 */
static int set_consumer_url(const char *session_name, const char *ctrl_url,
		const char *data_url)
{
	int ret;
	struct lttng_handle *handle;
	struct lttng_domain dom;

	assert(session_name);

	/*
	 * Set handle with the session name and the domain set to 0. This means to
	 * the session daemon that the next action applies on the tracing session
	 * rather then the domain specific session.
	 */
	memset(&dom, 0, sizeof(dom));

	handle = lttng_create_handle(session_name, &dom);
	if (handle == NULL) {
		ret = CMD_FATAL;
		goto error;
	}

	ret = lttng_set_consumer_url(handle, ctrl_url, data_url);
	if (ret < 0) {
		goto error;
	}

	if (ctrl_url) {
		MSG("Control URL %s set for session %s", ctrl_url, session_name);
	}

	if (data_url) {
		MSG("Data URL %s set for session %s", data_url, session_name);
	}

error:
	lttng_destroy_handle(handle);
	return ret;
}

/*
 * For a session name, enable the consumer.
 */
static int enable_consumer(const char *session_name)
{
	int ret;
	struct lttng_handle *handle;
	struct lttng_domain dom;

	assert(session_name);

	/*
	 * Set handle with the session name and the domain set to 0. This means to
	 * the session daemon that the next action applies on the tracing session
	 * rather then the domain specific session.
	 *
	 * XXX: This '0' value should be a domain enum value.
	 */
	memset(&dom, 0, sizeof(dom));

	handle = lttng_create_handle(session_name, 0);
	if (handle == NULL) {
		ret = CMD_FATAL;
		goto error;
	}

	ret = lttng_enable_consumer(handle);
	if (ret < 0) {
		goto error;
	}

	MSG("Consumer enabled for session %s", session_name);

error:
	lttng_destroy_handle(handle);
	return ret;
}

/*
 * For a session name, disable the consumer.
 */
static int disable_consumer(const char *session_name)
{
	int ret;
	struct lttng_handle *handle;

	assert(session_name);

	/*
	 * Set handle with the session name and the domain set to 0. This means to
	 * the session daemon that the next action applies on the tracing session
	 * rather then the domain specific session.
	 *
	 * XXX: This '0' value should be a domain enum value.
	 */
	handle = lttng_create_handle(session_name, 0);
	if (handle == NULL) {
		ret = CMD_FATAL;
		goto error;
	}

	ret = lttng_disable_consumer(handle);
	if (ret < 0) {
		goto error;
	}
	free(handle);

	MSG("Consumer disabled for session %s", session_name);

error:
	return ret;
}

/*
 *  Create a tracing session.
 *  If no name is specified, a default name is generated.
 *
 *  Returns one of the CMD_* result constants.
 */
static int create_session(void)
{
	int ret;
	char *session_name, *traces_path = NULL, *alloc_path = NULL;
	char *alloc_url = NULL, *url = NULL, datetime[16];
	time_t rawtime;
	struct tm *timeinfo;

	/* Get date and time for automatic session name/path */
	time(&rawtime);
	timeinfo = localtime(&rawtime);
	strftime(datetime, sizeof(datetime), "%Y%m%d-%H%M%S", timeinfo);

	/* Auto session name creation */
	if (opt_session_name == NULL) {
		ret = asprintf(&session_name, DEFAULT_SESSION_NAME "%s", datetime);
		if (ret < 0) {
			PERROR("asprintf session name");
			goto error;
		}
		DBG("Auto session name set to %s", session_name);
	} else {
		session_name = opt_session_name;
	}

	if (opt_no_consumer) {
		url = NULL;
	} else if (opt_output_path != NULL) {
		traces_path = utils_expand_path(opt_output_path);
		if (traces_path == NULL) {
			ret = CMD_ERROR;
			goto error;
		}

		/* Create URL string from the local filesytem path */
		ret = asprintf(&alloc_url, "file://%s", traces_path);
		if (ret < 0) {
			PERROR("asprintf url path");
			ret = CMD_FATAL;
			goto error;
		}
		/* URL to use in the lttng_create_session() call */
		url = alloc_url;
		MSG("Trace(s) output set to %s", traces_path);
	} else if (opt_url) { /* Handling URL (-U opt) */
		url = opt_url;
		MSG("Trace(s) output set to %s", url);
	} else if (opt_ctrl_url == NULL && opt_data_url == NULL) {
		/* Auto output path */
		alloc_path = config_get_default_path();
		if (alloc_path == NULL) {
			ERR("HOME path not found.\n \
					Please specify an output path using -o, --output PATH");
			ret = CMD_FATAL;
			goto error;
		}
		alloc_path = strdup(alloc_path);

		ret = asprintf(&alloc_url, "file://%s/" DEFAULT_TRACE_DIR_NAME,
				alloc_path);
		if (ret < 0) {
			PERROR("asprintf trace dir name");
			ret = CMD_FATAL;
			goto error;
		}

		url = alloc_url;
		MSG("Trace(s) output set to %s", alloc_url + strlen("file://"));
	}

	ret = lttng_create_session(session_name, url);
	if (ret < 0) {
		/* Don't set ret so lttng can interpret the sessiond error. */
		switch (-ret) {
		case LTTCOMM_EXIST_SESS:
			WARN("Session %s already exists", session_name);
			break;
		}
		goto error;
	}

	if (opt_session_name == NULL) {
		MSG("Session created with default name %s", session_name);
	} else {
		MSG("Session %s created.", session_name);
	}

	if (opt_ctrl_url || opt_data_url) {
		/* Setting up control URI (-C or/and -D opt) */
		ret = set_consumer_url(session_name, opt_ctrl_url, opt_data_url);
		if (ret < 0) {
			goto error;
		}

		ret = enable_consumer(session_name);
		if (ret < 0) {
			goto error;
		}
	}

	if (opt_disable_consumer && !opt_no_consumer) {
		ret = disable_consumer(session_name);
		if (ret < 0) {
			goto error;
		}
	}

	/* Init lttng session config */
	ret = config_init(session_name);
	if (ret < 0) {
		ret = CMD_ERROR;
		goto error;
	}

	ret = CMD_SUCCESS;

error:
	if (opt_session_name == NULL) {
		free(session_name);
	}

	if (alloc_url) {
		free(alloc_url);
	}

	if (traces_path) {
		free(traces_path);
	}

	if (ret < 0) {
		ERR("%s", lttng_strerror(ret));
	}
	return ret;
}

/*
 *  The 'create <options>' first level command
 *
 *  Returns one of the CMD_* result constants.
 */
int cmd_create(int argc, const char **argv)
{
	int opt, ret = CMD_SUCCESS;
	static poptContext pc;

	pc = poptGetContext(NULL, argc, argv, long_options, 0);
	poptReadDefaultConfig(pc, 0);

	while ((opt = poptGetNextOpt(pc)) != -1) {
		switch (opt) {
		case OPT_HELP:
			usage(stdout);
			goto end;
		case OPT_LIST_OPTIONS:
			list_cmd_options(stdout, long_options);
			goto end;
		default:
			usage(stderr);
			ret = CMD_UNDEFINED;
			goto end;
		}
	}

	opt_session_name = (char*) poptGetArg(pc);

	ret = create_session();

end:
	poptFreeContext(pc);
	return ret;
}
Commit	Line	Data
f3ed775e DG	1	/*
	2	* Copyright (C) 2011 - David Goulet <david.goulet@polymtl.ca>
	3	*
d14d33bf AM	4	* This program is free software; you can redistribute it and/or modify
	5	* it under the terms of the GNU General Public License, version 2 only,
	6	* as published by the Free Software Foundation.
f3ed775e DG	7	*
	8	* This program is distributed in the hope that it will be useful,
	9	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	10	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	11	* GNU General Public License for more details.
	12	*
d14d33bf AM	13	* You should have received a copy of the GNU General Public License along
	14	* with this program; if not, write to the Free Software Foundation, Inc.,
	15	* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
f3ed775e DG	16	*/
	17
	18	#define _GNU_SOURCE
a4b92340	19	#include <assert.h>
f3ed775e DG	20	#include <popt.h>
	21	#include <stdio.h>
	22	#include <stdlib.h>
	23	#include <string.h>
	24	#include <sys/stat.h>
	25	#include <sys/types.h>
	26	#include <time.h>
	27	#include <unistd.h>
	28
c399183f	29	#include "../command.h"
679b4943	30	#include "../utils.h"
f3ed775e	31
00e2e675	32	#include <common/defaults.h>
42224349	33	#include <common/sessiond-comm/sessiond-comm.h>
00e2e675	34	#include <common/uri.h>
81b86775	35	#include <common/utils.h>
42224349	36
f3ed775e DG	37	static char *opt_output_path;
f3ed775e DG	38	static char *opt_session_name;
a4b92340 DG	39	static char *opt_url;
	40	static char *opt_ctrl_url;
	41	static char *opt_data_url;
	42	static int opt_no_consumer;
	43	static int opt_disable_consumer;
f3ed775e DG	44
	45	enum {
	46	OPT_HELP = 1,
679b4943	47	OPT_LIST_OPTIONS,
f3ed775e DG	48	};
	49
	50	static struct poptOption long_options[] = {
	51	/* longName, shortName, argInfo, argPtr, value, descrip, argDesc */
679b4943 SM	52	{"help", 'h', POPT_ARG_NONE, NULL, OPT_HELP, NULL, NULL},
	53	{"output", 'o', POPT_ARG_STRING, &opt_output_path, 0, NULL, NULL},
	54	{"list-options", 0, POPT_ARG_NONE, NULL, OPT_LIST_OPTIONS, NULL, NULL},
a4b92340 DG	55	{"set-uri", 'U', POPT_ARG_STRING, &opt_url, 0, 0, 0},
	56	{"ctrl-uri", 'C', POPT_ARG_STRING, &opt_ctrl_url, 0, 0, 0},
	57	{"data-uri", 'D', POPT_ARG_STRING, &opt_data_url, 0, 0, 0},
	58	{"no-consumer", 0, POPT_ARG_VAL, &opt_no_consumer, 1, 0, 0},
	59	{"disable-consumer", 0, POPT_ARG_VAL, &opt_disable_consumer, 1, 0, 0},
f3ed775e DG	60	{0, 0, 0, 0, 0, 0, 0}
	61	};
	62
	63	/*
	64	* usage
	65	*/
	66	static void usage(FILE *ofp)
	67	{
a4b92340	68	fprintf(ofp, "usage: lttng create [NAME] [OPTIONS] \n");
f3ed775e	69	fprintf(ofp, "\n");
a4b92340 DG	70	fprintf(ofp, "Without a given NAME, the default is 'auto-<yyyymmdd>-<hhmmss>'\n");
	71	fprintf(ofp, "\n");
	72	fprintf(ofp, "Options:\n");
f3ed775e	73	fprintf(ofp, " -h, --help Show this help\n");
1c8d13c8	74	fprintf(ofp, " --list-options Simple listing of options\n");
58a97671	75	fprintf(ofp, " -o, --output PATH Specify output path for traces\n");
a4b92340 DG	76	fprintf(ofp, "\n");
	77	fprintf(ofp, "Extended Options:\n");
	78	fprintf(ofp, "\n");
	79	fprintf(ofp, "Using these options, each API call can be controlled individually.\n");
	80	fprintf(ofp, "\n");
	81	fprintf(ofp, " -U, --set-url=URL Set URL destination of the trace data.\n");
00e2e675	82	fprintf(ofp, " It is persistent for the session lifetime.\n");
a4b92340 DG	83	fprintf(ofp, " This will set both data and control URL.\n");
	84	fprintf(ofp, " You can change it with the enable-consumer cmd\n");
	85	fprintf(ofp, " -C, --ctrl-url=URL Set control path URL. (Must use -D also)\n");
	86	fprintf(ofp, " -D, --data-url=URL Set data path URL. (Must use -C also)\n");
	87	fprintf(ofp, " --no-consumer Don't activate a consumer for this session.\n");
	88	fprintf(ofp, " --disable-consumer\n");
	89	fprintf(ofp, " Disable consumer for this session.\n");
	90	fprintf(ofp, "\n");
	91	fprintf(ofp, "Please refer to the man page (lttng(1)) for more information on network\n");
	92	fprintf(ofp, "streaming mechanisms and explanation of the control and data port\n");
	93	fprintf(ofp, "You must have a running remote lttng-relayd for network streaming\n");
	94	fprintf(ofp, "\n");
	95	fprintf(ofp, "URL format is has followed:\n");
	96	fprintf(ofp, "\n");
	97	fprintf(ofp, " proto://[HOST\|IP][:PORT1[:PORT2]][/TRACE_PATH]\n");
	98	fprintf(ofp, "\n");
	99	fprintf(ofp, " Supported protocols are (proto):\n");
	100	fprintf(ofp, " > file://...\n");
	101	fprintf(ofp, " Local filesystem full path.\n");
	102	fprintf(ofp, "\n");
	103	fprintf(ofp, " > net[4\|6]://...\n");
	104	fprintf(ofp, " This will use the default network transport layer which is\n");
	105	fprintf(ofp, " TCP for both control (PORT1) and data port (PORT2).\n");
	106	fprintf(ofp, " The default ports are respectively 5342 and 5343.\n");
	107	fprintf(ofp, "\n");
	108	fprintf(ofp, " > tcp[4\|6]://...\n");
	109	fprintf(ofp, " Can only be used with -C and -D together\n");
	110	fprintf(ofp, "\n");
	111	fprintf(ofp, "NOTE: IPv6 address MUST be enclosed in brackets '[]' (rfc2732)\n");
	112	fprintf(ofp, "\n");
	113	fprintf(ofp, "Examples:\n");
	114	fprintf(ofp, " # lttng create -U net://192.168.1.42\n");
	115	fprintf(ofp, " Uses TCP and default ports for the given destination.\n");
	116	fprintf(ofp, " # lttng create -U net6://[fe80::f66d:4ff:fe53:d220]\n");
	117	fprintf(ofp, " Uses TCP, default ports and IPv6.\n");
	118	fprintf(ofp, " # lttng create s1 -U net://myhost.com:3229\n");
	119	fprintf(ofp, " Set the consumer to the remote HOST on port 3229 for control.\n");
f3ed775e DG	120	fprintf(ofp, "\n");
	121	}
	122
00e2e675	123	/*
a4b92340	124	* For a session name, set the consumer URLs.
00e2e675	125	*/
a4b92340 DG	126	static int set_consumer_url(const char session_name, const char ctrl_url,
a4b92340 DG	127	const char *data_url)
00e2e675	128	{
a4b92340 DG	129	int ret;
	130	struct lttng_handle *handle;
	131	struct lttng_domain dom;
	132
	133	assert(session_name);
	134
	135	/*
	136	* Set handle with the session name and the domain set to 0. This means to
	137	* the session daemon that the next action applies on the tracing session
	138	* rather then the domain specific session.
	139	*/
	140	memset(&dom, 0, sizeof(dom));
	141
	142	handle = lttng_create_handle(session_name, &dom);
	143	if (handle == NULL) {
	144	ret = CMD_FATAL;
	145	goto error;
	146	}
00e2e675	147
a4b92340 DG	148	ret = lttng_set_consumer_url(handle, ctrl_url, data_url);
	149	if (ret < 0) {
	150	goto error;
00e2e675 DG	151	}
00e2e675 DG	152
a4b92340 DG	153	if (ctrl_url) {
a4b92340 DG	154	MSG("Control URL %s set for session %s", ctrl_url, session_name);
00e2e675 DG	155	}
00e2e675 DG	156
a4b92340 DG	157	if (data_url) {
	158	MSG("Data URL %s set for session %s", data_url, session_name);
	159	}
	160
	161	error:
	162	lttng_destroy_handle(handle);
	163	return ret;
	164	}
	165
	166	/*
	167	* For a session name, enable the consumer.
	168	*/
	169	static int enable_consumer(const char *session_name)
	170	{
	171	int ret;
	172	struct lttng_handle *handle;
	173	struct lttng_domain dom;
	174
	175	assert(session_name);
	176
	177	/*
	178	* Set handle with the session name and the domain set to 0. This means to
	179	* the session daemon that the next action applies on the tracing session
	180	* rather then the domain specific session.
	181	*
	182	* XXX: This '0' value should be a domain enum value.
	183	*/
	184	memset(&dom, 0, sizeof(dom));
	185
	186	handle = lttng_create_handle(session_name, 0);
	187	if (handle == NULL) {
	188	ret = CMD_FATAL;
	189	goto error;
00e2e675 DG	190	}
00e2e675 DG	191
a4b92340 DG	192	ret = lttng_enable_consumer(handle);
	193	if (ret < 0) {
	194	goto error;
	195	}
	196
	197	MSG("Consumer enabled for session %s", session_name);
	198
	199	error:
	200	lttng_destroy_handle(handle);
	201	return ret;
00e2e675 DG	202	}
	203
	204	/*
a4b92340	205	* For a session name, disable the consumer.
00e2e675	206	*/
a4b92340	207	static int disable_consumer(const char *session_name)
00e2e675	208	{
a4b92340 DG	209	int ret;
	210	struct lttng_handle *handle;
	211
	212	assert(session_name);
	213
	214	/*
	215	* Set handle with the session name and the domain set to 0. This means to
	216	* the session daemon that the next action applies on the tracing session
	217	* rather then the domain specific session.
	218	*
	219	* XXX: This '0' value should be a domain enum value.
	220	*/
	221	handle = lttng_create_handle(session_name, 0);
	222	if (handle == NULL) {
	223	ret = CMD_FATAL;
	224	goto error;
00e2e675 DG	225	}
00e2e675 DG	226
a4b92340 DG	227	ret = lttng_disable_consumer(handle);
	228	if (ret < 0) {
	229	goto error;
	230	}
	231	free(handle);
00e2e675	232
a4b92340 DG	233	MSG("Consumer disabled for session %s", session_name);
	234
	235	error:
	236	return ret;
00e2e675 DG	237	}
00e2e675 DG	238
f3ed775e	239	/*
1c8d13c8 TD	240	* Create a tracing session.
1c8d13c8 TD	241	* If no name is specified, a default name is generated.
f3ed775e	242	*
1c8d13c8	243	* Returns one of the CMD_* result constants.
f3ed775e	244	*/
a4b92340	245	static int create_session(void)
f3ed775e	246	{
a4b92340	247	int ret;
58a97671	248	char session_name, traces_path = NULL, *alloc_path = NULL;
a4b92340	249	char alloc_url = NULL, url = NULL, datetime[16];
f3ed775e DG	250	time_t rawtime;
	251	struct tm *timeinfo;
	252
d6175221 DG	253	/* Get date and time for automatic session name/path */
	254	time(&rawtime);
	255	timeinfo = localtime(&rawtime);
	256	strftime(datetime, sizeof(datetime), "%Y%m%d-%H%M%S", timeinfo);
	257
f3ed775e DG	258	/* Auto session name creation */
f3ed775e DG	259	if (opt_session_name == NULL) {
a4b92340	260	ret = asprintf(&session_name, DEFAULT_SESSION_NAME "%s", datetime);
d6175221	261	if (ret < 0) {
a4b92340	262	PERROR("asprintf session name");
d6175221 DG	263	goto error;
d6175221 DG	264	}
f3ed775e DG	265	DBG("Auto session name set to %s", session_name);
	266	} else {
	267	session_name = opt_session_name;
	268	}
	269
a4b92340 DG	270	if (opt_no_consumer) {
	271	url = NULL;
	272	} else if (opt_output_path != NULL) {
81b86775	273	traces_path = utils_expand_path(opt_output_path);
00e2e675 DG	274	if (traces_path == NULL) {
	275	ret = CMD_ERROR;
	276	goto error;
	277	}
	278
a4b92340 DG	279	/* Create URL string from the local filesytem path */
a4b92340 DG	280	ret = asprintf(&alloc_url, "file://%s", traces_path);
00e2e675	281	if (ret < 0) {
a4b92340	282	PERROR("asprintf url path");
00e2e675 DG	283	ret = CMD_FATAL;
	284	goto error;
	285	}
a4b92340 DG	286	/* URL to use in the lttng_create_session() call */
	287	url = alloc_url;
	288	MSG("Trace(s) output set to %s", traces_path);
	289	} else if (opt_url) { /* Handling URL (-U opt) */
	290	url = opt_url;
	291	MSG("Trace(s) output set to %s", url);
	292	} else if (opt_ctrl_url == NULL && opt_data_url == NULL) {
00e2e675	293	/* Auto output path */
d386b234	294	alloc_path = config_get_default_path();
f3ed775e	295	if (alloc_path == NULL) {
d386b234	296	ERR("HOME path not found.\n \
00e2e675	297	Please specify an output path using -o, --output PATH");
f3ed775e DG	298	ret = CMD_FATAL;
	299	goto error;
	300	}
d386b234	301	alloc_path = strdup(alloc_path);
f3ed775e	302
a4b92340 DG	303	ret = asprintf(&alloc_url, "file://%s/" DEFAULT_TRACE_DIR_NAME,
a4b92340 DG	304	alloc_path);
58a97671	305	if (ret < 0) {
00e2e675 DG	306	PERROR("asprintf trace dir name");
00e2e675 DG	307	ret = CMD_FATAL;
58a97671 DG	308	goto error;
58a97671 DG	309	}
00e2e675	310
a4b92340 DG	311	url = alloc_url;
a4b92340 DG	312	MSG("Trace(s) output set to %s", alloc_url + strlen("file://"));
00e2e675 DG	313	}
00e2e675 DG	314
a4b92340	315	ret = lttng_create_session(session_name, url);
f3ed775e	316	if (ret < 0) {
ae856491	317	/* Don't set ret so lttng can interpret the sessiond error. */
42224349 DG	318	switch (-ret) {
	319	case LTTCOMM_EXIST_SESS:
	320	WARN("Session %s already exists", session_name);
	321	break;
	322	}
f3ed775e DG	323	goto error;
	324	}
	325
a4b92340 DG	326	if (opt_session_name == NULL) {
	327	MSG("Session created with default name %s", session_name);
	328	} else {
	329	MSG("Session %s created.", session_name);
	330	}
	331
	332	if (opt_ctrl_url \|\| opt_data_url) {
	333	/* Setting up control URI (-C or/and -D opt) */
	334	ret = set_consumer_url(session_name, opt_ctrl_url, opt_data_url);
	335	if (ret < 0) {
	336	goto error;
	337	}
	338
	339	ret = enable_consumer(session_name);
	340	if (ret < 0) {
	341	goto error;
	342	}
	343	}
	344
	345	if (opt_disable_consumer && !opt_no_consumer) {
	346	ret = disable_consumer(session_name);
	347	if (ret < 0) {
	348	goto error;
	349	}
	350	}
	351
58a97671 DG	352	/* Init lttng session config */
58a97671 DG	353	ret = config_init(session_name);
f3ed775e	354	if (ret < 0) {
27089920	355	ret = CMD_ERROR;
f3ed775e DG	356	goto error;
	357	}
	358
f3ed775e DG	359	ret = CMD_SUCCESS;
	360
	361	error:
54bd3caf TD	362	if (opt_session_name == NULL) {
	363	free(session_name);
	364	}
	365
a4b92340 DG	366	if (alloc_url) {
a4b92340 DG	367	free(alloc_url);
f3ed775e DG	368	}
f3ed775e DG	369
58a97671 DG	370	if (traces_path) {
58a97671 DG	371	free(traces_path);
f3ed775e	372	}
a4b92340 DG	373
	374	if (ret < 0) {
	375	ERR("%s", lttng_strerror(ret));
	376	}
f3ed775e DG	377	return ret;
	378	}
	379
	380	/*
74cc1d0f	381	* The 'create <options>' first level command
1c8d13c8 TD	382	*
1c8d13c8 TD	383	* Returns one of the CMD_* result constants.
f3ed775e DG	384	*/
	385	int cmd_create(int argc, const char **argv)
	386	{
	387	int opt, ret = CMD_SUCCESS;
	388	static poptContext pc;
	389
	390	pc = poptGetContext(NULL, argc, argv, long_options, 0);
	391	poptReadDefaultConfig(pc, 0);
	392
	393	while ((opt = poptGetNextOpt(pc)) != -1) {
	394	switch (opt) {
	395	case OPT_HELP:
27089920	396	usage(stdout);
f3ed775e	397	goto end;
679b4943 SM	398	case OPT_LIST_OPTIONS:
679b4943 SM	399	list_cmd_options(stdout, long_options);
679b4943	400	goto end;
f3ed775e DG	401	default:
	402	usage(stderr);
	403	ret = CMD_UNDEFINED;
	404	goto end;
	405	}
	406	}
	407
	408	opt_session_name = (char*) poptGetArg(pc);
	409
	410	ret = create_session();
	411
	412	end:
ca1c3607	413	poptFreeContext(pc);
f3ed775e DG	414	return ret;
f3ed775e DG	415	}