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>

4 files changed, 24 insertions, 20 deletions

diff --git a/src/diagnostic/active-diagnostic-request.cpp b/src/diagnostic/active-diagnostic-request.cpp
index 9d0f6aae..fcdbc97a 100644
--- a/src/diagnostic/active-diagnostic-request.cpp
+++ b/src/diagnostic/active-diagnostic-request.cpp
@@ -16,9 +16,12 @@
  */
 
 #include <fnmatch.h>
+#include <map>
 
 #include "active-diagnostic-request.hpp"
 
+#include "../configuration.hpp"
+
 std::string active_diagnostic_request_t::prefix_ = "diagnostic_messages";
 
 bool active_diagnostic_request_t::operator==(const active_diagnostic_request_t& b)
@@ -52,9 +55,8 @@ active_diagnostic_request_t::active_diagnostic_request_t()
 	  in_flight_{false}, frequency_clock_{frequency_clock_t()}, timeout_clock_{frequency_clock_t()}
 {}
 
-active_diagnostic_request_t::active_diagnostic_request_t(std::shared_ptr<can_bus_dev_t> bus, DiagnosticRequest* request,
-		const std::string& name, bool wait_for_multiple_responses,
-		const DiagnosticResponseDecoder decoder,
+active_diagnostic_request_t::active_diagnostic_request_t(const std::string& bus, DiagnosticRequest* request,
+		const std::string& name, bool wait_for_multiple_responses, const DiagnosticResponseDecoder decoder,
 		const DiagnosticResponseCallback callback, float frequencyHz)
 	: bus_{bus}, id_{request->arbitration_id}, handle_{nullptr}, name_{name},
 	  decoder_{decoder}, callback_{callback}, recurring_{frequencyHz ? true : false}, wait_for_multiple_responses_{wait_for_multiple_responses},
@@ -66,9 +68,9 @@ uint32_t active_diagnostic_request_t::get_id() const
 	return id_;
 }
 
-std::shared_ptr<can_bus_dev_t> active_diagnostic_request_t::get_can_bus_dev()
+const std::shared_ptr<can_bus_dev_t> active_diagnostic_request_t::get_can_bus_dev() const
 {
-	return bus_;
+	return can_bus_t::get_can_device(bus_);
 }
 
 DiagnosticRequestHandle* active_diagnostic_request_t::get_handle()
diff --git a/src/diagnostic/active-diagnostic-request.hpp b/src/diagnostic/active-diagnostic-request.hpp
index f18282f6..b40ae08a 100644
--- a/src/diagnostic/active-diagnostic-request.hpp
+++ b/src/diagnostic/active-diagnostic-request.hpp
@@ -56,7 +56,7 @@ typedef void (*DiagnosticResponseCallback)(const active_diagnostic_request_t* re
  */
 class active_diagnostic_request_t {
 private:
-	std::shared_ptr<can_bus_dev_t> bus_; /*!< bus_ - The CAN bus this request should be made on, or is currently in flight-on*/
+	std::string bus_; /*!< bus_ - The CAN bus this request should be made on, or is currently in flight-on*/
 	uint32_t id_; /*!< id_ - The arbitration ID (aka message ID) for the request.*/
 	DiagnosticRequestHandle* handle_; /*!< handle_ - A handle for the request to keep track of it between
 										* sending the frames of the request and receiving all frames of the response.*/
@@ -82,15 +82,16 @@ private:
 public:
 	bool operator==(const active_diagnostic_request_t& b);
 	active_diagnostic_request_t& operator=(const active_diagnostic_request_t& adr);
+
 	active_diagnostic_request_t();
 	active_diagnostic_request_t(active_diagnostic_request_t&&) = default;
-	active_diagnostic_request_t(std::shared_ptr<can_bus_dev_t> bus, DiagnosticRequest* request,
+	active_diagnostic_request_t(const std::string& bus, DiagnosticRequest* request,
 		const std::string& name, bool wait_for_multiple_responses,
 		const DiagnosticResponseDecoder decoder,
 		const DiagnosticResponseCallback callback, float frequencyHz);
 	
 	uint32_t get_id() const;
-	std::shared_ptr<can_bus_dev_t> get_can_bus_dev();
+	const std::shared_ptr<can_bus_dev_t> get_can_bus_dev() const;
 	DiagnosticRequestHandle* get_handle();
 	const std::string get_name() const;
 	static std::string& get_prefix();
diff --git a/src/diagnostic/diagnostic-manager.cpp b/src/diagnostic/diagnostic-manager.cpp
index 21a599d2..1477b2b9 100644
--- a/src/diagnostic/diagnostic-manager.cpp
+++ b/src/diagnostic/diagnostic-manager.cpp
@@ -33,10 +33,10 @@ diagnostic_manager_t::diagnostic_manager_t()
 	: initialized_{false}
 {}
 
-bool diagnostic_manager_t::initialize(std::shared_ptr<can_bus_dev_t> cbd)
+bool diagnostic_manager_t::initialize()
 {
 	// Mandatory to set the bus before intiliaze shims.
-	bus_ = cbd;
+	bus_ = configuration_t::instance().get_diagnostic_bus();
 
 	init_diagnostic_shims();
 	reset();
@@ -153,7 +153,7 @@ active_diagnostic_request_t* diagnostic_manager_t::find_recurring_request(const
 
 std::shared_ptr<can_bus_dev_t> diagnostic_manager_t::get_can_bus_dev()
 {
-	return bus_;
+	return can_bus_t::get_can_device(bus_);
 }
 
 bool diagnostic_manager_t::add_request(DiagnosticRequest* request, const std::string name,
@@ -178,7 +178,7 @@ bool diagnostic_manager_t::add_request(DiagnosticRequest* request, const std::st
 
 			find_and_erase(entry, non_recurring_requests_);
 			DEBUG(binder_interface, "Added one-time diagnostic request on bus %s: %s",
-					bus_->get_device_name(), request_string);
+					bus_, request_string);
 
 			non_recurring_requests_.push_back(entry);
 	}
@@ -227,7 +227,7 @@ bool diagnostic_manager_t::add_recurring_request(DiagnosticRequest* request, con
 					sizeof(request_string));
 
 			DEBUG(binder_interface, "add_recurring_request: Added recurring diagnostic request (freq: %f) on bus %s: %s",
-					frequencyHz, bus_->get_device_name().c_str(), request_string);
+					frequencyHz, bus_.c_str(), request_string);
 
 			uint64_t usec;
 			sd_event_now(afb_daemon_get_event_loop(binder_interface->daemon), CLOCK_MONOTONIC, &usec);
@@ -343,7 +343,7 @@ int diagnostic_manager_t::send_request(sd_event_source *s, uint64_t usec, void *
 
 //	if(adr != nullptr && adr->get_can_bus_dev() == dm.get_can_bus_dev() && adr->should_send() &&
 //		dm.clear_to_send(adr))
-	if(adr != nullptr && adr->get_can_bus_dev() == dm.bus_)
+	if(adr != nullptr && adr->get_can_bus_dev() == dm.get_can_bus_dev())
 	{
 		adr->get_frequency_clock().tick();
 		start_diagnostic_request(&dm.shims_, adr->get_handle());
@@ -376,7 +376,7 @@ DiagnosticShims& diagnostic_manager_t::get_shims()
 
 bool diagnostic_manager_t::shims_send(const uint32_t arbitration_id, const uint8_t* data, const uint8_t size)
 {
-	std::shared_ptr<can_bus_dev_t> can_bus_dev = configuration_t::instance().get_diagnostic_manager().get_can_bus_dev();
+	std::shared_ptr<can_bus_dev_t> can_bus_dev = can_bus_t::get_can_device(configuration_t::instance().get_diagnostic_manager().bus_);
 	return can_bus_dev->shims_send(arbitration_id, data, size);
 }
 
diff --git a/src/diagnostic/diagnostic-manager.hpp b/src/diagnostic/diagnostic-manager.hpp
index 71662ba1..ff055d54 100644
--- a/src/diagnostic/diagnostic-manager.hpp
+++ b/src/diagnostic/diagnostic-manager.hpp
@@ -18,6 +18,7 @@
 #pragma once
 
 #include <systemd/sd-event.h>
+#include <map>
 #include <vector>
 
 #include "uds/uds.h"
@@ -49,10 +50,10 @@ protected:
 	static void shims_timer();
 
 private:
-	DiagnosticShims shims_; /*!< shims_ - An array of shim functions for each CAN bus that plug the diagnostics
-							 * library (uds-c) into the VI's CAN peripheral.*/
-	std::shared_ptr<can_bus_dev_t> bus_; /*!< bus_ - A pointer to the CAN bus that should be used for all standard OBD-II requests, if the bus is not
-						  * explicitly spcified in the request. If NULL, all requests require an explicit bus.*/
+	DiagnosticShims shims_; /*!< shims_ - A map of shim functions for each CAN bus that plug the diagnostics
+							 						* library (uds-c) into the VI's CAN peripheral.*/
+	std::string bus_; /*!< bus_ - A pointer to the CAN bus that should be used for all standard OBD-II requests, if the bus is not
+						  * explicitly spcified in the request. Default to the first bus CAN at initialization.*/
 	std::vector<active_diagnostic_request_t*> recurring_requests_; /*!< recurringRequests - A list of active recurring diagnostic requests.*/
 	std::vector<active_diagnostic_request_t*> non_recurring_requests_; /*!< nonrecurringRequests - A list of active one-time diagnostic requests. When a
 																	   * response is received for a non-recurring request or it times out, it is removed*/
@@ -63,7 +64,7 @@ private:
 public:
 	diagnostic_manager_t();
 
-	bool initialize(std::shared_ptr<can_bus_dev_t> cbd);
+	bool initialize();
 
 	std::shared_ptr<can_bus_dev_t> get_can_bus_dev();
 	DiagnosticShims& get_shims();