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>

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));