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/main-afb-client-demo.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/main-afb-client-demo.c')
-rw-r--r-- | src/main-afb-client-demo.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/src/main-afb-client-demo.c b/src/main-afb-client-demo.c index 4b3ce4b7..f2c0826e 100644 --- a/src/main-afb-client-demo.c +++ b/src/main-afb-client-demo.c @@ -60,7 +60,7 @@ static void on_pws_event_remove(void *closure, const char *event_name, int event static void on_pws_event_subscribe(void *closure, void *request, const char *event_name, int event_id); static void on_pws_event_unsubscribe(void *closure, void *request, const char *event_name, int event_id); static void on_pws_event_push(void *closure, const char *event_name, int event_id, struct json_object *data); -static void on_pws_event_broadcast(void *closure, const char *event_name, struct json_object *data); +static void on_pws_event_broadcast(void *closure, const char *event_name, struct json_object *data, const afb_proto_ws_uuid_t uuid, uint8_t hop); static void idle(); static int process_stdin(); @@ -530,7 +530,7 @@ static void on_pws_event_push(void *closure, const char *event_name, int event_i fflush(stdout); } -static void on_pws_event_broadcast(void *closure, const char *event_name, struct json_object *data) +static void on_pws_event_broadcast(void *closure, const char *event_name, struct json_object *data, const afb_proto_ws_uuid_t uuid, uint8_t hop) { if (raw) printf("ON-EVENT-BROADCAST: [%s]\n%s\n", event_name, json_object_to_json_string_ext(data, JSON_C_TO_STRING_NOSLASHESCAPE)); |