diff options
Diffstat (limited to 'lib/yang.h')
| -rw-r--r-- | lib/yang.h | 150 |
1 files changed, 129 insertions, 21 deletions
@@ -112,10 +112,16 @@ extern struct yang_modules yang_modules; * module_name * Name of the YANG module. * + * features + * NULL-terminated array of feature names to enable. + * If NULL, all features are disabled. + * To enable all features, use ["*", NULL]. + * * Returns: * Pointer to newly created YANG module. */ -extern struct yang_module *yang_module_load(const char *module_name); +extern struct yang_module *yang_module_load(const char *module_name, + const char **features); /* * Load all FRR native YANG models. @@ -317,30 +323,16 @@ extern unsigned int yang_snode_num_keys(const struct lysc_node *snode); * libyang data node to be processed. * * xpath - * Pointer to previously allocated buffer. + * Pointer to previously allocated buffer or NULL. * * xpath_len - * Size of the xpath buffer. - */ -extern void yang_dnode_get_path(const struct lyd_node *dnode, char *xpath, - size_t xpath_len); - -/* - * Return the schema name of the given libyang data node. + * Size of the xpath buffer if xpath non-NULL. * - * dnode - * libyang data node. - * - * xpath_fmt - * Optional XPath expression (absolute or relative) to specify a different - * data node to operate on in the same data tree. - * - * Returns: - * Schema name of the libyang data node. + * If xpath is NULL, the returned string (if non-NULL) needs to be free()d by + * the caller. */ -extern const char *yang_dnode_get_schema_name(const struct lyd_node *dnode, - const char *xpath_fmt, ...) - PRINTFRR(2, 3); +extern char *yang_dnode_get_path(const struct lyd_node *dnode, char *xpath, + size_t xpath_len); /* * Find a libyang data node by its YANG data path. @@ -435,6 +427,21 @@ void yang_dnode_iterate(yang_dnode_iter_cb cb, void *arg, ...) PRINTFRR(4, 5); /* + * Count the number of data nodes that satisfy an XPath query. + * + * dnode + * Base libyang data node to operate on. + * + * xpath_fmt + * XPath expression (absolute or relative). + * + * ... + * any parameters for xpath_fmt. + */ +uint32_t yang_dnode_count(const struct lyd_node *dnode, const char *xpath_fmt, + ...) PRINTFRR(2, 3); + +/* * Check if the libyang data node contains a default value. Non-presence * containers are assumed to always contain a default value. * @@ -601,6 +608,69 @@ extern struct ly_ctx *yang_ctx_new_setup(bool embedded_modules, extern void yang_debugging_set(bool enable); /* + * Parse a YANG notification. + * + * Args: + * xpath: xpath of notification. + * format: LYD_FORMAT of input data. + * data: input data. + * notif: pointer to the libyang data tree to store the parsed notification. + * If the notification is not on the top level of the yang model, + * the pointer to the notification node is still returned, but it's + * part of the full data tree with all its parents. + */ +extern LY_ERR yang_parse_notification(const char *xpath, LYD_FORMAT format, + const char *data, struct lyd_node **notif); + +/* + * "Print" the yang tree in `root` into dynamic sized array. + * + * Args: + * root: root of the subtree to "print" along with siblings. + * format: LYD_FORMAT of output (see lyd_print_mem) + * options: printing options (see lyd_print_mem) + * + * Return: + * A darr dynamic array with the "printed" output or NULL on failure. + */ +extern uint8_t *yang_print_tree(const struct lyd_node *root, LYD_FORMAT format, + uint32_t options); + + +/** + * yang_convert_lyd_format() - convert one libyang format to darr string. + * @data: data to convert. + * @data_len: length of the data. + * @in_format: format of the data. + * @out_format: format to return. + * @shrink: true to avoid pretty printing. + * + * Return: + * A darr based string or NULL for error. + */ +extern char *yang_convert_lyd_format(const char *data, size_t msg_len, + LYD_FORMAT in_format, + LYD_FORMAT out_format, bool shrink); + +/* + * "Print" the yang tree in `root` into an existing dynamic sized array. + * + * This function does not initialize or free the dynamic array, the array can + * already existing data, the tree will be appended to this data. + * + * Args: + * darr: existing `uint8_t *`, dynamic array. + * root: root of the subtree to "print" along with siblings. + * format: LYD_FORMAT of output (see lyd_print_mem) + * options: printing options (see lyd_print_mem) + * + * Return: + * LY_ERR from underlying calls. + */ +extern LY_ERR yang_print_tree_append(uint8_t **darr, const struct lyd_node *root, + LYD_FORMAT format, uint32_t options); + +/* * Print libyang error messages into the provided buffer. * * ly_ctx @@ -693,6 +763,44 @@ bool yang_is_last_list_dnode(const struct lyd_node *dnode); /* API to check if the given node is last node in the data tree level */ bool yang_is_last_level_dnode(const struct lyd_node *dnode); +/* Create a YANG predicate string based on the keys */ +extern int yang_get_key_preds(char *s, const struct lysc_node *snode, + struct yang_list_keys *keys, ssize_t space); + +/* Get YANG keys from an existing dnode */ +extern int yang_get_node_keys(struct lyd_node *node, struct yang_list_keys *keys); + +/** + * yang_resolve_snodes() - Resolve an XPath to matching schema nodes. + * @ly_ctx: libyang context to operate on. + * @xpath: the path or XPath to resolve. + * @snodes: [OUT] pointer for resulting dynamic array (darr) of schema node + * pointers. + * @simple: [OUT] indicates if @xpath was resolvable simply or not. Non-simple + * means that the @xpath is not a simple path and utilizes XPath 1.0 + * functionality beyond simple key predicates. + * + * This function can be used to find the schema node (or nodes) that correspond + * to a given @xpath. If the @xpath includes non-key predicates (e.g., using + * functions) then @simple will be set to false, and @snodes may contain more + * than a single schema node. + * + * Return: a libyang error or LY_SUCCESS. + */ +extern LY_ERR yang_resolve_snode_xpath(struct ly_ctx *ly_ctx, const char *xpath, + struct lysc_node ***snodes, bool *simple); + +/* + * Libyang future functions + */ +extern const char *yang_ly_strerrcode(LY_ERR err); +extern const char *yang_ly_strvecode(LY_VECODE vecode); +extern LY_ERR yang_lyd_new_list(struct lyd_node_inner *parent, + const struct lysc_node *snode, + const struct yang_list_keys *keys, + struct lyd_node **nodes); +extern LY_ERR yang_lyd_trim_xpath(struct lyd_node **rootp, const char *xpath); + #ifdef __cplusplus } #endif |