diff options
| author |   José Bollo <jose.bollo@iot.bzh> | 2019-07-16 23:39:27 +0200 |
|---|---|---|
| committer | Jose Bollo <jose.bollo@iot.bzh> | 2019-07-18 15:38:02 +0200 |
| commit | 6dfeafe7e4fa582b3db3f950136bc97f8611fc6d (patch) | |
| tree | 62386661fe495dd8992260c89e09757326450edc /src/afb-api-dbus.c | |
| parent | 5b5968815dc672467f40ed6b49f05a590bdb8b4d (diff) | |
Tag broadcasted events with UUID and hop
When API have mutual dependencies, leading to
loops in dependecies, broadcasting an event
never ends because of the loop (see SPEC-2625).
To avoid that weird flood of events, a unic
identifier (UUID) is attached to broadcasted
event and a tiny memory records previously
broadcasted events to avoid re-sending an
already sent event.
The size of the memory can be set using the
macro variable EVENT_BROADCAST_MEMORY_COUNT
whose default value is 8. It can be reduced
to 0.
An other mecanism is added to limit the count
of hops that a broadcasted event can do. That
count can be set using the macro variable
EVENT_BROADCAST_HOP_MAX whose default value
is 10.
Bug-AGL: SPEC-2625
Change-Id: I29550a8a5c8f5e2ffb20edc3330357a1e870c0e2
Signed-off-by: José Bollo <jose.bollo@iot.bzh>
Diffstat (limited to 'src/afb-api-dbus.c')
| -rw-r--r-- | src/afb-api-dbus.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/src/afb-api-dbus.c b/src/afb-api-dbus.c index b155a899..139c6472 100644 --- a/src/afb-api-dbus.c +++ b/src/afb-api-dbus.c @@ -635,7 +635,7 @@ error: static void afb_api_dbus_server_event_add(void *closure, const char *event, int eventid); static void afb_api_dbus_server_event_remove(void *closure, const char *event, int eventid); static void afb_api_dbus_server_event_push(void *closure, const char *event, int eventid, struct json_object *object); -static void afb_api_dbus_server_event_broadcast(void *closure, const char *event, struct json_object *object); +static void afb_api_dbus_server_event_broadcast(void *closure, const char *event, struct json_object *object, const char *uuid); /* the interface for events broadcasting */ static const struct afb_evt_itf evt_broadcast_itf = { @@ -917,7 +917,7 @@ static void afb_api_dbus_server_event_push(void *closure, const char *event, int json_object_put(object); } -static void afb_api_dbus_server_event_broadcast(void *closure, const char *event, struct json_object *object) +static void afb_api_dbus_server_event_broadcast(void *closure, const char *event, struct json_object *object, const char *uuid) { int rc; struct api_dbus *api; |