first draft to new subscribre unsubscibre method

Change-Id: I2a3fe7ac1d77cc893e9cc63c54895d521ab2bf01
Signed-off-by: Romain Forlot <romain.forlot@iot.bzh>

1 files changed, 113 insertions, 0 deletions

diff --git a/src/low-can-binding-new.cpp b/src/low-can-binding-new.cpp
new file mode 100644
index 0000000..3686c6b
--- /dev/null
+++ b/src/low-can-binding-new.cpp
@@ -0,0 +1,113 @@
+/*
+ * Copyright (C) 2015, 2016 "IoT.bzh"
+ * Author "Romain Forlot" <romain.forlot@iot.bzh>
+ * Author "Loic Collignon" <loic.collignon@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.
+ */
+
+#include "low-can-binding.hpp"
+
+/********************************************************************************
+*
+*		Subscription and unsubscription
+*
+*********************************************************************************/
+
+std::vector<std::string> get_name(struct afb_req request)
+{
+	int i, n;
+	std::vector<std::string> ret;
+	struct json_object *args, *a, *x;
+
+	args = afb_req_json(request);
+	if (args == NULL || !json_object_object_get_ex(args, "event", &a))
+		ret.clear();
+	else if (json_object_get_type(a) != json_type_array)
+		ret.push_back(json_object_get_string(a));
+	else
+	{
+		n = json_object_array_length(a);
+		for (i = 0 ; i < n ; i++) {
+			x = json_object_array_get_idx(a, i);
+			ret.push_back(json_object_get_string(x));
+		}
+	}
+
+	return ret;
+}
+
+static const struct afb_verb_desc_v1 verbs[]=
+{
+	{ .name= "subscribe",	.session= AFB_SESSION_NONE, .callback= subscribe,	.info= "subscribe to notification of CAN bus messages." },
+	{ .name= "unsubscribe",	.session= AFB_SESSION_NONE, .callback= unsubscribe,	.info= "unsubscribe a previous subscription." }
+};
+
+static const struct afb_binding binding_desc {
+	AFB_BINDING_VERSION_1,
+	{
+		"CAN bus service",
+		"can",
+		verbs
+	}
+};
+
+extern "C"
+{
+	static void subscribe(struct afb_req request)
+	{
+		int ret;
+		std::vector<std::string> names;
+		
+		names = get_name(request);
+		if(names.empty())
+			ret = subscribe_signals(request, "*");
+		else
+			ret = subscribe_signals(request, names);
+	}
+
+	static void unsubscribe(struct afb_req request)
+	{
+		subscribe_unsubscribe(request, false);
+	}
+
+	const struct afb_binding *afbBindingV1Register (const struct afb_binding_interface *itf)
+	{
+		interface = itf;
+
+		return &binding_desc;
+	}
+
+	/**
+	* @brief Initialize the binding.
+	* 
+	* @param[in] service Structure which represent the Application Framework Binder.
+	* 
+	* @return Exit code, zero if success.
+	*/
+	int afbBindingV1ServiceInit(struct afb_service service)
+	{
+		int fd_conf;
+		fd_conf = afb_daemon_rootdir_open_locale(interface->daemon, "can_bus.json", O_RDONLY, NULL);
+
+		/* Open CAN socket */
+		can_bus_t can_bus_handler(interface, fd_conf);
+		if(can_bus_handler.init_can_dev() == 0)
+		{
+			can_bus_handler.start_threads();
+			return 0;
+		}
+
+		return 1;
+	}
+};
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