diff options
Diffstat (limited to 'src/registry.h')
| -rw-r--r-- | src/registry.h | 67 |
1 files changed, 57 insertions, 10 deletions
diff --git a/src/registry.h b/src/registry.h index c2b57a23..4947486c 100644 --- a/src/registry.h +++ b/src/registry.h @@ -1,25 +1,72 @@ +/* + * netdata registry + * + * this header file describes the public interface + * to the netdata registry + * + * only these high level functions are exposed + * + */ + +// ---------------------------------------------------------------------------- +// TODO +// +// 1. the default tracking cookie expires in 1 year, but the persons are not +// removed from the db - this means the database only grows - ideally the +// database should be cleaned in registry_db_save() for both on-disk and +// on-memory entries. +// +// Cleanup: +// i. Find all the PERSONs that have expired cookie +// ii. For each of their PERSON_URLs: +// - decrement the linked MACHINE links +// - if the linked MACHINE has no other links, remove the linked MACHINE too +// - remove the PERSON_URL +// +// 2. add protection to prevent abusing the registry by flooding it with +// requests to fill the memory and crash it. +// +// Possible protections: +// - limit the number of URLs per person +// - limit the number of URLs per machine +// - limit the number of persons +// - limit the number of machines +// - [DONE] limit the size of URLs +// - [DONE] limit the size of PERSON_URL names +// - limit the number of requests that add data to the registry, +// per client IP per hour +// +// 3. lower memory requirements +// +// - embed avl structures directly into registry objects, instead of DICTIONARY +// [DONE for PERSON_URLs, PENDING for MACHINE_URLs] +// - store GUIDs in memory as UUID instead of char * +// - do not track persons using the demo machines only +// (i.e. start tracking them only when they access a non-demo machine) +// - [DONE] do not track custom dashboards by default + + #ifndef NETDATA_REGISTRY_H #define NETDATA_REGISTRY_H 1 #define NETDATA_REGISTRY_COOKIE_NAME "netdata_registry_id" -extern void registry_set_cookie(struct web_client *w, const char *guid); -extern const char *registry_to_announce(void); -extern int registry_verify_cookies_redirects(void); +// initialize the registry +// should only happen when netdata starts +extern int registry_init(void); + +// free all data held by the registry +// should only happen when netdata exits +extern void registry_free(void); +// HTTP requests handled by the registry extern int registry_request_access_json(struct web_client *w, char *person_guid, char *machine_guid, char *url, char *name, time_t when); extern int registry_request_delete_json(struct web_client *w, char *person_guid, char *machine_guid, char *url, char *delete_url, time_t when); extern int registry_request_search_json(struct web_client *w, char *person_guid, char *machine_guid, char *url, char *request_machine, time_t when); extern int registry_request_switch_json(struct web_client *w, char *person_guid, char *machine_guid, char *url, char *new_person_guid, time_t when); extern int registry_request_hello_json(struct web_client *w); -extern int registry_init(void); -extern void registry_free(void); -extern int registry_save(void); - -extern char *registry_get_this_machine_guid(void); - +// update the registry monitoring charts extern void registry_statistics(void); - #endif /* NETDATA_REGISTRY_H */ |