Revert accessing CAN device with a map indexing on dev name

Main reason for that behavior revert is because of generator that rely
on CAN device name and so we have point on these object by specify the
device name.

Instead of shared pointer between objects, instead binding is based on
device name. With a device name you can get the shared pointer on it using
new static method from can_bus_t object.

Change-Id: I331e0ad8d03c88a15c697d12a9fce3699b0cd962
Signed-off-by: Romain Forlot <romain.forlot@iot.bzh>

5 files changed, 36 insertions, 16 deletions

diff --git a/src/can/can-bus.cpp b/src/can/can-bus.cpp
index 69f08c5f..7c6ae429 100644
--- a/src/can/can-bus.cpp
+++ b/src/can/can-bus.cpp
@@ -50,6 +50,8 @@ can_bus_t::can_bus_t(int conf_file)
 {
 }
 
+std::map<std::string, std::shared_ptr<can_bus_dev_t>> can_bus_t::can_devices_;
+
 /**
  * @brief Will make the decoding operation on a classic CAN message. It will not
  * handle CAN commands nor diagnostic messages that have their own method to get
@@ -254,7 +256,7 @@ void can_bus_t::stop_threads()
 int can_bus_t::init_can_dev()
 {
 	std::vector<std::string> devices_name;
-	int i;
+	int i = 0;
 	size_t t;
 
 	devices_name = read_conf();
@@ -262,20 +264,19 @@ int can_bus_t::init_can_dev()
 	if (! devices_name.empty())
 	{
 		t = devices_name.size();
-		i=0;
 
 		for(const auto& device : devices_name)
 		{
-			can_devices_.push_back(std::make_shared<can_bus_dev_t>(device, i));
-			if (can_devices_[i]->open() == 0)
+			can_bus_t::can_devices_[device] = std::make_shared<can_bus_dev_t>(device, i);
+			if (can_bus_t::can_devices_[device]->open() == 0)
 			{
 				DEBUG(binder_interface, "Start reading thread");
 				NOTICE(binder_interface, "%s device opened and reading", device.c_str());
-				can_devices_[i]->start_reading(*this);
+				can_bus_t::can_devices_[device]->start_reading(*this);
+				i++;
 			}
 			else
 				ERROR(binder_interface, "Can't open device %s", device.c_str());
-			i++;
 		}
 
 		NOTICE(binder_interface, "Initialized %d/%d can bus device(s)", i, t);
@@ -421,7 +422,20 @@ void can_bus_t::push_new_vehicle_message(const openxc_VehicleMessage& v_msg)
 *
 * @return map can_bus_dev_m_ map
 */
-const std::vector<std::shared_ptr<can_bus_dev_t>>& can_bus_t::get_can_devices() const
+const std::map<std::string, std::shared_ptr<can_bus_dev_t>>& can_bus_t::get_can_devices() const
+{
+	return can_bus_t::can_devices_;
+}
+
+/**
+* @brief Return the shared pointer on the can_bus_dev_t initialized 
+* with device_name "bus"
+*
+* @param[in] bus - CAN bus device name to retrieve.
+*
+* @return A shared pointer on an object can_bus_dev_t
+*/
+std::shared_ptr<can_bus_dev_t> can_bus_t::get_can_device(std::string bus)
 {
-	return can_devices_;
+	return can_bus_t::can_devices_[bus];
 }
diff --git a/src/can/can-bus.hpp b/src/can/can-bus.hpp
index 97b683d7..a51dfb1b 100644
--- a/src/can/can-bus.hpp
+++ b/src/can/can-bus.hpp
@@ -68,7 +68,7 @@ private:
 	std::mutex decoded_can_message_mutex_;  /// < mutex protecting the vehicle_message_q_ queue.
 	std::queue <openxc_VehicleMessage> vehicle_message_q_; /// < queue that'll store openxc_VehicleMessage to pushed
 
-	std::vector<std::shared_ptr<can_bus_dev_t>> can_devices_; /// < Can device map containing all can_bus_dev_t objects initialized during init_can_dev function
+	static std::map<std::string, std::shared_ptr<can_bus_dev_t>> can_devices_; /// < Can device map containing all can_bus_dev_t objects initialized during init_can_dev function
 
 public:
 	can_bus_t(int conf_file);
@@ -91,5 +91,6 @@ public:
 	openxc_VehicleMessage next_vehicle_message();
 	void push_new_vehicle_message(const openxc_VehicleMessage& v_msg);
 
-	const std::vector<std::shared_ptr<can_bus_dev_t>>& get_can_devices() const;
+	const std::map<std::string, std::shared_ptr<can_bus_dev_t>>& get_can_devices() const;
+	static std::shared_ptr<can_bus_dev_t> get_can_device(std::string bus);
 };
diff --git a/src/can/can-message-definition.cpp b/src/can/can-message-definition.cpp
index 82724573..7aca19e9 100644
--- a/src/can/can-message-definition.cpp
+++ b/src/can/can-message-definition.cpp
@@ -17,11 +17,15 @@
 
 #include "can-message-definition.hpp"
 
-can_message_definition_t::can_message_definition_t(uint8_t bus)
+can_message_definition_t::can_message_definition_t(const std::string bus)
 	: bus_{bus}, last_value_(CAN_MESSAGE_SIZE)
 {}
 
-can_message_definition_t::can_message_definition_t(uint8_t bus, uint32_t id, can_message_format_t format, frequency_clock_t frequency_clock, bool force_send_changed)
+can_message_definition_t::can_message_definition_t(const std::string bus, uint32_t id, frequency_clock_t frequency_clock, bool force_send_changed)
+: bus_{bus}, id_{id}, frequency_clock_{frequency_clock}, force_send_changed_{force_send_changed}, last_value_(CAN_MESSAGE_SIZE)
+{}
+
+can_message_definition_t::can_message_definition_t(const std::string bus, uint32_t id, can_message_format_t format, frequency_clock_t frequency_clock, bool force_send_changed)
 	: bus_{bus}, id_{id}, format_{format}, frequency_clock_{frequency_clock}, force_send_changed_{force_send_changed}, last_value_(CAN_MESSAGE_SIZE)
 {}
 
diff --git a/src/can/can-message-definition.hpp b/src/can/can-message-definition.hpp
index 1c7199e6..921b58ad 100644
--- a/src/can/can-message-definition.hpp
+++ b/src/can/can-message-definition.hpp
@@ -35,7 +35,7 @@
 class can_message_definition_t
 {
 private:
-	uint8_t bus_; /*!< bus_ - Address of CAN bus device. */
+	std::string bus_; /*!< bus_ - Address of CAN bus device. */
 	uint32_t id_; /*!< id_ - The ID of the message.*/
 	can_message_format_t format_; /*!< format_ - the format of the message's ID.*/
 	frequency_clock_t frequency_clock_; /*!<  clock_ - an optional frequency clock to control the output of this
@@ -48,8 +48,9 @@ private:
  										  *	needs to compare an incoming CAN message with the previous frame.*/
 	
 public:
-	can_message_definition_t(uint8_t bus);
-	can_message_definition_t(uint8_t bus, uint32_t id, can_message_format_t format, frequency_clock_t frequency_clock, bool force_send_changed);
+	can_message_definition_t(const std::string bus);
+	can_message_definition_t(const std::string bus, uint32_t id, frequency_clock_t frequency_clock, bool force_send_changed);
+	can_message_definition_t(const std::string bus, uint32_t id, can_message_format_t format, frequency_clock_t frequency_clock, bool force_send_changed);
 
 	uint32_t get_id() const;
 };
diff --git a/src/can/can-message.cpp b/src/can/can-message.cpp
index cc4adb49..6b40d912 100644
--- a/src/can/can-message.cpp
+++ b/src/can/can-message.cpp
@@ -170,7 +170,7 @@ can_message_t can_message_t::convert_from_canfd_frame(const struct canfd_frame&
 		format = can_message_format_t::EXTENDED;
 	else
 		format = can_message_format_t::STANDARD;
-
+		
 	switch(format)
 	{
 		case can_message_format_t::STANDARD: