Events: refactoring

This new version allows to subscribe a client for
an event.

The event should first be created for the API
(the API's prefix is added) using 'afb_daemon_make_event'.

After that, plugins can subscribe or unsubscribe their
clients (identified through requests) to the events that
it generates. See 'afb_req_subscribe' and 'afb_req_unsubscribe'.

Events created by 'afb_daemon_make_event' can be widely
broadcasted using 'afb_event_broadcast' or pushed only to
suscribers using 'afb_event_push'.

Events can be destroyed using 'afb_event_drop'.

Change-Id: I7c0bed5e625c2052dcd81c6bfe960def1fa032f3
Signed-off-by: José Bollo <jose.bollo@iot.bzh>

1 files changed, 36 insertions, 0 deletions

diff --git a/src/afb-evt.h b/src/afb-evt.h
new file mode 100644
index 00000000..8e102546
--- /dev/null
+++ b/src/afb-evt.h
@@ -0,0 +1,36 @@
+/*
+ * Copyright (C) 2016 "IoT.bzh"
+ * Author: José Bollo <jose.bollo@iot.bzh>
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+struct afb_event;
+struct AFB_clientCtx;
+
+struct afb_evt_listener;
+
+extern struct afb_evt_listener *afb_evt_listener_create(void (*send)(void *closure, const char *event, struct json_object *object), void *closure);
+
+extern int afb_evt_broadcast(const char *event, struct json_object *object);
+
+extern struct afb_evt_listener *afb_evt_listener_addref(struct afb_evt_listener *listener);
+extern void afb_evt_listener_unref(struct afb_evt_listener *listener);
+
+extern struct afb_event afb_evt_create_event(const char *name);
+
+extern int afb_evt_add_watch(struct afb_evt_listener *listener, struct afb_event event);
+extern int afb_evt_remove_watch(struct afb_evt_listener *listener, struct afb_event event);
+