/*
* Create a brand new session using name and url for destination.
*
* Returns LTTNG_OK on success or a negative error code.
*/
int lttng_create_session(const char *name, const char *url)
{
int ret;
ssize_t size;
struct lttcomm_session_msg lsm;
struct lttng_uri *uris = NULL;
if (name == NULL) {
return -LTTNG_ERR_INVALID;
}
memset(&lsm, 0, sizeof(lsm));
lsm.cmd_type = LTTNG_CREATE_SESSION;
copy_string(lsm.session.name, name, sizeof(lsm.session.name));
/* There should never be a data URL */
size = parse_str_urls_to_uri(url, NULL, &uris);
if (size < 0) {
return -LTTNG_ERR_INVALID;
}
lsm.u.uri.size = size;
ret = ask_sessiond_varlen(&lsm, uris, sizeof(struct lttng_uri) * size,
NULL);
free(uris);
return ret;
}
/*
* Set URL for a consumer for a session and domain.
*
* Return 0 on success, else a negative value.
*/
int lttng_set_consumer_url(struct lttng_handle *handle,
const char *control_url, const char *data_url)
{
int ret;
ssize_t size;
struct lttcomm_session_msg lsm;
struct lttng_uri *uris = NULL;
if (handle == NULL || (control_url == NULL && data_url == NULL)) {
return -LTTNG_ERR_INVALID;
}
memset(&lsm, 0, sizeof(lsm));
lsm.cmd_type = LTTNG_SET_CONSUMER_URI;
copy_string(lsm.session.name, handle->session_name,
sizeof(lsm.session.name));
copy_lttng_domain(&lsm.domain, &handle->domain);
size = parse_str_urls_to_uri(control_url, data_url, &uris);
if (size < 0) {
return -LTTNG_ERR_INVALID;
}
lsm.u.uri.size = size;
ret = ask_sessiond_varlen(&lsm, uris, sizeof(struct lttng_uri) * size,
NULL);
free(uris);
return ret;
}
/*
* This is an extension of create session that is ONLY and SHOULD only be used
* by the lttng command line program. It exists to avoid using URI parsing in
* the lttng client.
*
* We need the date and time for the trace path subdirectory for the case where
* the user does NOT define one using either -o or -U. Using the normal
* lttng_create_session API call, we have no clue on the session daemon side if
* the URL was generated automatically by the client or define by the user.
*
* So this function "wrapper" is hidden from the public API, takes the datetime
* string and appends it if necessary to the URI subdirectory before sending it
* to the session daemon.
*
* With this extra function, the lttng_create_session call behavior is not
* changed and the timestamp is appended to the URI on the session daemon side
* if necessary.
*/
int _lttng_create_session_ext(const char *name, const char *url,
const char *datetime)
{
int ret;
ssize_t size;
struct lttcomm_session_msg lsm;
struct lttng_uri *uris = NULL;
if (name == NULL || datetime == NULL || url == NULL) {
return -LTTNG_ERR_INVALID;
}
memset(&lsm, 0, sizeof(lsm));
lsm.cmd_type = LTTNG_CREATE_SESSION;
copy_string(lsm.session.name, name, sizeof(lsm.session.name));
/* There should never be a data URL */
size = parse_str_urls_to_uri(url, NULL, &uris);
if (size < 0) {
ret = -LTTNG_ERR_INVALID;
goto error;
}
lsm.u.uri.size = size;
if (size > 0 && uris[0].dtype != LTTNG_DST_PATH && strlen(uris[0].subdir) == 0) {
/* Don't append datetime if the name was automatically created. */
if (strncmp(name, DEFAULT_SESSION_NAME "-",
strlen(DEFAULT_SESSION_NAME) + 1)) {
ret = snprintf(uris[0].subdir, sizeof(uris[0].subdir), "%s-%s",
name, datetime);
} else {
ret = snprintf(uris[0].subdir, sizeof(uris[0].subdir), "%s", name);
}
if (ret < 0) {
PERROR("snprintf uri subdir");
ret = -LTTNG_ERR_FATAL;
goto error;
}
}
ret = ask_sessiond_varlen(&lsm, uris, sizeof(struct lttng_uri) * size,
NULL);
error:
free(uris);
return ret;
}
