api-v3: First draft

[src/app-framework-binder.git] / include / afb / afb-event-x2.h

diff --git a/include/afb/afb-event-x2.h b/include/afb/afb-event-x2.h
new file mode 100644 (file)
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+++ b/include/afb/afb-event-x2.h
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+/*
+ * Copyright (C) 2016, 2017, 2018 "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
+
+#include "afb-event-x2-itf.h"
+
+/**
+ * Checks whether the 'event' is valid or not.
+ *
+ * @param event the event to check
+ *
+ * @return 0 if not valid or 1 if valid.
+ */
+static inline int afb_event_x2_is_valid(struct afb_event_x2 *event)
+{
+       return !!event;
+}
+
+/**
+ * Broadcasts widely an event of 'event' with the data 'object'.
+ * 'object' can be NULL.
+ *
+ * For convenience, the function calls 'json_object_put' for 'object'.
+ * Thus, in the case where 'object' should remain available after
+ * the function returns, the function 'json_object_get' shall be used.
+ *
+ * @param event the event to broadcast
+ * @param object the companion object to associate to the broadcasted event (can be NULL)
+ *
+ * @return the count of clients that received the event.
+ */
+static inline int afb_event_x2_broadcast(
+                       struct afb_event_x2 *event,
+                       struct json_object *object)
+{
+       return event->itf->broadcast(event, object);
+}
+
+/**
+ * Pushes an event of 'event' with the data 'object' to its observers.
+ * 'object' can be NULL.
+ *
+ * For convenience, the function calls 'json_object_put' for 'object'.
+ * Thus, in the case where 'object' should remain available after
+ * the function returns, the function 'json_object_get' shall be used.
+ *
+ * @param event the event to push
+ * @param object the companion object to associate to the pushed event (can be NULL)
+ *
+ * @return the count of clients that received the event.
+ */
+static inline int afb_event_x2_push(
+                       struct afb_event_x2 *event,
+                       struct json_object *object)
+{
+       return event->itf->push(event, object);
+}
+
+/**
+ * Gets the name associated to 'event'.
+ *
+ * @param event the event whose name is requested
+ *
+ * @return the name of the event
+ *
+ * The returned name can be used until call to 'afb_event_x2_unref'.
+ * It shouldn't be freed.
+ */
+static inline const char *afb_event_x2_name(struct afb_event_x2 *event)
+{
+       return event->itf->name(event);
+}
+
+/**
+ * Decrease the count of references to 'event'.
+ * Call this function when the evenid is no more used.
+ * It destroys the event_x2 when the reference count falls to zero.
+ *
+ * @param event the event
+ */
+static inline void afb_event_x2_unref(struct afb_event_x2 *event)
+{
+       event->itf->unref(event);
+}
+
+/**
+ * Increases the count of references to 'event'
+ *
+ * @param event the event
+ *
+ * @return the event
+ */
+static inline struct afb_event_x2 *afb_event_x2_addref(
+                                       struct afb_event_x2 *event)
+{
+       return event->itf->addref(event);
+}
+