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-stub-ws.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-stub-ws.c')
-rw-r--r-- | src/afb-stub-ws.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/src/afb-stub-ws.c b/src/afb-stub-ws.c index 4c6fafac..6a52f6fc 100644 --- a/src/afb-stub-ws.c +++ b/src/afb-stub-ws.c @@ -341,12 +341,12 @@ static void server_event_push_cb(void *closure, const char *event, int eventid, json_object_put(object); } -static void server_event_broadcast_cb(void *closure, const char *event, struct json_object *object) +static void server_event_broadcast_cb(void *closure, const char *event, struct json_object *object, const uuid_binary_t uuid, uint8_t hop) { struct afb_stub_ws *stubws = closure; if (stubws->proto != NULL) - afb_proto_ws_server_event_broadcast(stubws->proto, event, object); + afb_proto_ws_server_event_broadcast(stubws->proto, event, object, uuid, hop); json_object_put(object); } @@ -457,9 +457,9 @@ static void client_on_event_push_cb(void *closure, const char *event_name, int e ERROR("unreadable push event"); } -static void client_on_event_broadcast_cb(void *closure, const char *event_name, struct json_object *data) +static void client_on_event_broadcast_cb(void *closure, const char *event_name, struct json_object *data, const uuid_binary_t uuid, uint8_t hop) { - afb_evt_broadcast(event_name, data); + afb_evt_rebroadcast(event_name, data, uuid, hop); } /*****************************************************/ |