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lib: nb: call child destroy CBs when YANG container is deleted

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Previously the code was only calling the child destroy callbacks if the target
deleted node was a non-presence container. We now add a flag to the callback
structure to instruct northbound to perform the rescursive delete for code that
wishes for this to happen.

- Fix wrong relative path lookup in keychain destroy callback

Signed-off-by: Christian Hopps <chopps@labn.net>
This commit is contained in:
Christian Hopps 2025-02-11 07:12:06 +00:00
parent baf4c1a78f
commit d03ecf4562
3 changed files with 34 additions and 10 deletions
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4
lib/keychain_nb.c
View file

@ -587,9 +587,9 @@ static int key_chains_key_chain_key_crypto_algorithm_destroy(
if (args->event != NB_EV_APPLY)
return NB_OK;
name = yang_dnode_get_string(args->dnode, "../../../name");
name = yang_dnode_get_string(args->dnode, "../../name");
keychain = keychain_lookup(name);
index = (uint32_t)yang_dnode_get_uint64(args->dnode, "../../key-id");
index = (uint32_t)yang_dnode_get_uint64(args->dnode, "../key-id");
key = key_lookup(keychain, index);
key->hash_algo = KEYCHAIN_ALGO_NULL;
keychain_touch(keychain);

29
lib/northbound.c
View file

@ -516,20 +516,33 @@ void nb_config_diff_created(const struct lyd_node *dnode, uint32_t *seq,
static void nb_config_diff_deleted(const struct lyd_node *dnode, uint32_t *seq,
struct nb_config_cbs *changes)
{
struct nb_node *nb_node = dnode->schema->priv;
struct lyd_node *child;
bool recursed = false;
/* Ignore unimplemented nodes. */
if (!dnode->schema->priv)
if (!nb_node)
return;
/*
* If the CB structure indicates it (recurse flag set), call the destroy
* callbacks for the children of a containment node.
*/
if (CHECK_FLAG(dnode->schema->nodetype, LYS_CONTAINER | LYS_LIST) &&
CHECK_FLAG(nb_node->cbs.flags, F_NB_CB_DESTROY_RECURSE)) {
recursed = true;
LY_LIST_FOR (lyd_child(dnode), child) {
nb_config_diff_deleted(child, seq, changes);
}
}
if (nb_cb_operation_is_valid(NB_CB_DESTROY, dnode->schema))
nb_config_diff_add_change(changes, NB_CB_DESTROY, seq, dnode);
else if (CHECK_FLAG(dnode->schema->nodetype, LYS_CONTAINER)) {
struct lyd_node *child;
else if (CHECK_FLAG(dnode->schema->nodetype, LYS_CONTAINER) && !recursed) {
/*
* Non-presence containers need special handling since they
* don't have "destroy" callbacks. In this case, what we need to
* do is to call the "destroy" callbacks of their child nodes
* when applicable (i.e. optional nodes).
* If we didn't already above, call destroy on the children of
* this container (it's an NP container) as NP containers have
* no destroy CB themselves.
*/
LY_LIST_FOR (lyd_child(dnode), child) {
nb_config_diff_deleted(child, seq, changes);

11
lib/northbound.h
View file

@ -385,6 +385,11 @@ struct nb_callbacks {
*/
int (*destroy)(struct nb_cb_destroy_args *args);
/*
* Flags to control the how northbound callbacks are invoked.
*/
uint flags;
/*
* Configuration callback.
*
@ -622,6 +627,12 @@ struct nb_callbacks {
void (*cli_show_end)(struct vty *vty, const struct lyd_node *dnode);
};
/*
* Flag indicating the northbound should recurse destroy the children of this
* node when it is destroyed.
*/
#define F_NB_CB_DESTROY_RECURSE 0x01
struct nb_dependency_callbacks {
void (*get_dependant_xpath)(const struct lyd_node *dnode, char *xpath);
void (*get_dependency_xpath)(const struct lyd_node *dnode, char *xpath);