S_Val Session::get_item_next(S_Iter_Value iter)
{
S_Val value(new Val());
int ret = sr_get_item_next(_sess, iter->_iter, &value->_val);
if (SR_ERR_OK == ret) {
value->_deleter = std::make_shared<Deleter>(value->_val);
return value;
}
if (SR_ERR_NOT_FOUND == ret) {
return nullptr;
}
throw_exception(ret);
}
int
main(int argc, char **argv)
{
sr_conn_ctx_t *conn = NULL;
sr_session_ctx_t *sess = NULL;
sr_val_t *value = NULL;
sr_val_iter_t *iter = NULL;
int rc = SR_ERR_OK;
/* connect to sysrepo */
rc = sr_connect("app3", SR_CONN_DEFAULT, &conn);
if (SR_ERR_OK != rc) {
goto cleanup;
}
/* start session */
rc = sr_session_start(conn, SR_DS_STARTUP, SR_SESS_DEFAULT, &sess);
if (SR_ERR_OK != rc) {
goto cleanup;
}
/* get all list instances with their content (recursive) */
rc = sr_get_items_iter(sess, "/ietf-interfaces:interfaces/interface//*", &iter);
if (SR_ERR_OK != rc) {
goto cleanup;
}
while (SR_ERR_OK == sr_get_item_next(sess, iter, &value)){
print_value(value);
sr_free_val(value);
}
sr_free_val_iter(iter);
cleanup:
if (NULL != sess) {
sr_session_stop(sess);
}
if (NULL != conn) {
sr_disconnect(conn);
}
return rc;
}
/**
* @brief Get complete libyang data tree of a specified module from sysrepo.
*/
static int
srcfg_get_module_data(struct ly_ctx *ly_ctx, const char *module_name, struct lyd_node **data_tree)
{
int rc = SR_ERR_OK, ret = 0;
sr_val_t *value = NULL;
sr_val_iter_t *iter = NULL;
struct lyd_node *node = NULL;
const struct lys_node *schema = NULL;
char query[PATH_MAX] = { 0, };
char *string_val = NULL;
snprintf(query, PATH_MAX, "/%s:*//.", module_name);
rc = sr_get_items_iter(srcfg_session, query, &iter);
if (SR_ERR_OK != rc) {
SR_LOG_ERR("Error by sr_get_items_iter: %s", sr_strerror(rc));
goto cleanup;
}
*data_tree = NULL;
ly_errno = LY_SUCCESS;
ly_diminish_errors = true;
while (SR_ERR_OK == (rc = sr_get_item_next(srcfg_session, iter, &value))) {
ly_diminish_errors = false;
if (NULL == value) {
goto next;
}
/* get node schema */
schema = ly_ctx_get_node2(ly_ctx, NULL, value->xpath, 0);
if (!schema) {
SR_LOG_ERR("Error by ly_ctx_get_node2: %s", ly_errmsg());
goto fail;
}
/* skip default values */
if (schema->nodetype == LYS_LEAF && value->dflt) {
goto next;
}
/* skip non-presence containers */
if (value->type == SR_CONTAINER_T) {
goto next;
}
/* convert value to string */
rc = sr_val_to_str(value, schema, &string_val);
if (SR_ERR_OK != rc) {
SR_LOG_ERR("Error by sr_val_to_str: %s", sr_strerror(rc));
goto fail;
}
/* add node to data tree */
ly_errno = LY_SUCCESS;
node = lyd_new_path(*data_tree, ly_ctx, value->xpath, string_val, LYD_PATH_OPT_UPDATE);
if (!node && LY_SUCCESS != ly_errno) {
SR_LOG_ERR("Error by lyd_new_path: %s", ly_errmsg());
goto fail;
}
if (NULL == *data_tree) {
*data_tree = node;
}
next:
/* cleanup before next iteration */
if (NULL != string_val) {
free(string_val);
string_val = NULL;
}
if (NULL != value) {
sr_free_val(value);
value = NULL;
}
ly_diminish_errors = true;
}
ly_diminish_errors = false;
if (SR_ERR_NOT_FOUND == rc) {
rc = SR_ERR_OK;
}
if (SR_ERR_OK == rc) {
if (NULL != *data_tree) {
/* validate returned data, but most importantly resolve leafrefs */
ret = lyd_validate(data_tree, LYD_OPT_STRICT | LYD_OPT_CONFIG | LYD_WD_IMPL_TAG);
CHECK_ZERO_LOG_GOTO(ret, rc, SR_ERR_INTERNAL, fail, "Received data tree from sysrepo is not valid: %s", ly_errmsg());
/* remove default nodes added by validation */
lyd_wd_cleanup(data_tree, 0);
}
goto cleanup;
}
fail:
rc = SR_ERR_INTERNAL;
if (NULL != *data_tree) {
lyd_free_withsiblings(*data_tree);
*data_tree = NULL;
}
cleanup:
if (NULL != string_val) {
free(string_val);
}
if (NULL != value) {
sr_free_val(value);
}
if (NULL != iter) {
sr_free_val_iter(iter);
}
return rc;
}
