*/
#define _GNU_SOURCE
+#include <assert.h>
#include <popt.h>
#include <stdio.h>
#include <stdlib.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,
{"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}
};
+/*
+ * Please have a look at src/lib/lttng-ctl/lttng-ctl.c for more information on
+ * why this declaration exists and used ONLY in for this command.
+ */
+extern int _lttng_create_session_ext(const char *name, const char *url,
+ const char *datetime);
+
/*
* usage
*/
static void usage(FILE *ofp)
{
- fprintf(ofp, "usage: lttng create [options] [NAME]\n");
+ 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, " The default NAME is 'auto-yyyymmdd-hhmmss'\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[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;
}
/*
*
* Returns one of the CMD_* result constants.
*/
-static int create_session()
+static int create_session(void)
{
- int ret, have_name = 0;
- char datetime[16];
- char *session_name, *traces_path = NULL, *alloc_path = NULL;
+ int ret;
+ char *session_name = NULL, *traces_path = NULL, *alloc_path = NULL;
+ char *alloc_url = NULL, *url = NULL, datetime[16];
+ char session_name_date[NAME_MAX], *print_str_url = NULL;
time_t rawtime;
struct tm *timeinfo;
/* Auto session name creation */
if (opt_session_name == NULL) {
- ret = asprintf(&session_name, "auto-%s", datetime);
+ ret = snprintf(session_name_date, sizeof(session_name_date),
+ DEFAULT_SESSION_NAME "-%s", datetime);
if (ret < 0) {
- perror("asprintf session name");
+ PERROR("snprintf session name");
goto error;
}
- DBG("Auto session name set to %s", session_name);
+ session_name = strdup(DEFAULT_SESSION_NAME);
+ if (session_name == NULL) {
+ PERROR("strdup session name");
+ goto error;
+ }
+ DBG("Auto session name set to %s", session_name_date);
} else {
session_name = opt_session_name;
- have_name = 1;
+ ret = snprintf(session_name_date, sizeof(session_name_date),
+ "%s-%s", session_name, datetime);
+ if (ret < 0) {
+ PERROR("snprintf session name");
+ goto error;
+ }
}
- /* Auto output path */
- if (opt_output_path == NULL) {
- alloc_path = strdup(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;
+ if (opt_no_consumer) {
+ url = NULL;
+ print_str_url = "";
+ } else if (opt_output_path != NULL) {
+ traces_path = utils_expand_path(opt_output_path);
+ if (traces_path == NULL) {
+ ret = CMD_ERROR;
goto error;
}
- if (have_name) {
- ret = asprintf(&traces_path, "%s/" DEFAULT_TRACE_DIR_NAME
- "/%s-%s", alloc_path, session_name, datetime);
- } else {
- ret = asprintf(&traces_path, "%s/" DEFAULT_TRACE_DIR_NAME
- "/%s", alloc_path, session_name);
+ /* 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;
+ print_str_url = traces_path;
+ } else if (opt_url) { /* Handling URL (-U opt) */
+ url = opt_url;
+ print_str_url = 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 "/%s",
+ alloc_path, session_name_date);
if (ret < 0) {
- perror("asprintf trace dir name");
+ PERROR("asprintf trace dir name");
+ ret = CMD_FATAL;
goto error;
}
- } else {
- traces_path = opt_output_path;
+
+ url = alloc_url;
+ print_str_url = alloc_url + strlen("file://");
}
- ret = lttng_create_session(session_name, traces_path);
+ ret = _lttng_create_session_ext(session_name, url, datetime);
if (ret < 0) {
/* Don't set ret so lttng can interpret the sessiond error. */
switch (-ret) {
- case LTTCOMM_EXIST_SESS:
+ case LTTNG_ERR_EXIST_SESS:
WARN("Session %s already exists", session_name);
break;
}
goto error;
}
+ if (opt_session_name == NULL) {
+ MSG("Session %s created.", session_name_date);
+ } else {
+ MSG("Session %s created.", session_name);
+ }
+ MSG("Traces will be written in %s", print_str_url);
+
+ 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;
+ }
+ }
+
+ if (opt_session_name == NULL) {
+ free(session_name);
+ session_name = session_name_date;
+ }
+
/* Init lttng session config */
ret = config_init(session_name);
if (ret < 0) {
goto error;
}
- MSG("Session %s created.", session_name);
- MSG("Traces will be written in %s" , traces_path);
ret = CMD_SUCCESS;
error:
- if (opt_session_name == NULL) {
+ if (opt_session_name == NULL && session_name != session_name_date) {
free(session_name);
}
- if (alloc_path) {
- free(alloc_path);
+ if (alloc_url) {
+ free(alloc_url);
}
if (traces_path) {
free(traces_path);
}
+
+ if (ret < 0) {
+ ERR("%s", lttng_strerror(ret));
+ }
return ret;
}
projects / lttng-tools.git / blobdiff