watcher_object_list_t *collectWatchers(zhandle_t *zh,int type, char *path)
{
struct watcher_object_list *list = create_watcher_object_list(0);
if(type==ZOO_SESSION_EVENT) {
watcher_object_t defWatcher;
defWatcher.watcher=zh->watcher;
defWatcher.context=zh->context;
add_to_list(&list, &defWatcher, 1);
collect_session_watchers(zh, &list);
return list;
}
switch(type) {
case CREATED_EVENT_DEF:
case CHANGED_EVENT_DEF:
// look up the watchers for the path and move them to a delivery list
add_for_event(zh->active_node_watchers,path,&list);
add_for_event(zh->active_exist_watchers,path,&list);
break;
case CHILD_EVENT_DEF:
// look up the watchers for the path and move them to a delivery list
add_for_event(zh->active_child_watchers,path,&list);
break;
case DELETED_EVENT_DEF:
// look up the watchers for the path and move them to a delivery list
add_for_event(zh->active_node_watchers,path,&list);
add_for_event(zh->active_exist_watchers,path,&list);
add_for_event(zh->active_child_watchers,path,&list);
break;
}
return list;
}
static int do_insert_watcher_object(zk_hashtable *ht, const char *path, watcher_object_t* wo)
{
int res=1;
watcher_object_list_t* wl;
wl=hashtable_search(ht->ht,(void*)path);
if(wl==0) {
int res;
/* inserting a new path element */
res=hashtable_insert(ht->ht,strdup(path),create_watcher_object_list(wo));
assert(res);
} else {
/* path already exists; check if the watcher already exists */
res = add_to_list(&wl, wo, 1);
}
return res;
}
static int do_insert_watcher_object(zk_hashtable *ht, const char *path, watcher_object_t* wo)
{
int res=1;
watcher_object_list_t* wl;
wl=hashtable_search(ht->ht,(void*)path);
if(wl==0){
int res;
/* inserting a new path element */
res=hashtable_insert(ht->ht,strdup(path),create_watcher_object_list(wo));
assert(res);
}else{
/*
* Path already exists; check if the watcher already exists.
* Don't clone the watcher since it's allocated on the heap --- avoids
* a memory leak and saves a clone operation (calloc + copy).
*/
res = add_to_list(&wl, wo, 0);
}
return res;
}