int main(int argc, char *argv[])
{
int status = 0, i;
for (i = 1; i < argc; i++) {
if (!strcmp(argv[i], "--relayd-path")) {
if (i >= argc - 1) {
fprintf(stderr, "Missing relayd path\n");
exit(EXIT_FAILURE);
}
relayd_path = argv[++i];
} else {
fprintf(stderr, "Unknown option \"%s\". Try --relayd-path PATH.\n", argv[i]);
exit(EXIT_FAILURE);
}
}
status |= check_sessiond();
for (i = 0; i < NR_LTTNG_HEALTH_CONSUMERD; i++) {
status |= check_consumerd(i);
}
if (relayd_path) {
status |= check_relayd(relayd_path);
}
if (!status) {
exit(EXIT_SUCCESS);
} else {
exit(EXIT_FAILURE);
}
}
static
struct lttng_session_descriptor *create_session_descriptor(void)
{
int ret;
ssize_t uri_count;
enum output_type output_type;
struct lttng_uri *uris = NULL;
struct lttng_session_descriptor *descriptor = NULL;
const char *uri_str1 = NULL, *uri_str2 = NULL;
char local_output_path[LTTNG_PATH_MAX] = {};
if (opt_no_output) {
output_type = OUTPUT_NONE;
} else if (opt_output_path) {
char *expanded_output_path;
output_type = OUTPUT_LOCAL;
expanded_output_path = utils_expand_path(opt_output_path);
if (!expanded_output_path) {
ERR("Failed to expand output path.");
goto end;
}
ret = lttng_strncpy(local_output_path, expanded_output_path,
sizeof(local_output_path));
free(expanded_output_path);
if (ret) {
ERR("Output path exceeds the maximal supported length (%zu bytes)",
sizeof(local_output_path));
goto end;
}
} else if (opt_url || opt_ctrl_url) {
uri_str1 = opt_ctrl_url ? opt_ctrl_url : opt_url;
uri_str2 = opt_data_url;
uri_count = uri_parse_str_urls(uri_str1, uri_str2, &uris);
if (uri_count != 1 && uri_count != 2) {
ERR("Unrecognized URL format.");
goto end;
}
switch (uri_count) {
case 1:
output_type = OUTPUT_LOCAL;
if (uris[0].dtype != LTTNG_DST_PATH) {
ERR("Unrecognized URL format.");
goto end;
}
ret = lttng_strncpy(local_output_path, uris[0].dst.path,
sizeof(local_output_path));
if (ret) {
ERR("Output path exceeds the maximal supported length (%zu bytes)",
sizeof(local_output_path));
}
break;
case 2:
output_type = OUTPUT_NETWORK;
break;
default:
/* Already checked. */
abort();
}
} else {
output_type = OUTPUT_UNSPECIFIED;
}
if (opt_snapshot) {
/* Snapshot session. */
switch (output_type) {
case OUTPUT_UNSPECIFIED:
case OUTPUT_LOCAL:
descriptor = lttng_session_descriptor_snapshot_local_create(
opt_session_name,
output_type == OUTPUT_LOCAL ?
local_output_path : NULL);
break;
case OUTPUT_NONE:
descriptor = lttng_session_descriptor_snapshot_create(
opt_session_name);
break;
case OUTPUT_NETWORK:
descriptor = lttng_session_descriptor_snapshot_network_create(
opt_session_name, uri_str1, uri_str2);
break;
default:
abort();
}
} else if (opt_live_timer) {
/* Live session. */
if (output_type != OUTPUT_UNSPECIFIED &&
output_type != OUTPUT_NETWORK) {
ERR("Unsupported output type specified for live session.");
goto end;
}
descriptor = lttng_session_descriptor_live_network_create(
opt_session_name, uri_str1, uri_str2,
opt_live_timer);
} else {
/* Regular session. */
switch (output_type) {
case OUTPUT_UNSPECIFIED:
case OUTPUT_LOCAL:
descriptor = lttng_session_descriptor_local_create(
opt_session_name,
output_type == OUTPUT_LOCAL ?
local_output_path : NULL);
break;
case OUTPUT_NONE:
descriptor = lttng_session_descriptor_create(
opt_session_name);
break;
case OUTPUT_NETWORK:
descriptor = lttng_session_descriptor_network_create(
opt_session_name, uri_str1, uri_str2);
break;
default:
abort();
}
}
if (!descriptor) {
ERR("Failed to initialize session creation command.");
} else {
/*
* Auto-launch the relay daemon when a live session
* is created using default URLs.
*/
if (!opt_url && !opt_ctrl_url && !opt_data_url &&
opt_live_timer && !check_relayd()) {
int ret;
const char *pathname = opt_relayd_path ? :
INSTALL_BIN_PATH "/lttng-relayd";
ret = spawn_relayd(pathname, 0);
if (ret < 0) {
lttng_session_descriptor_destroy(descriptor);
descriptor = NULL;
}
}
}
