Make low-can use afb-genskel by default
[apps/agl-service-can-low-level.git] / low-can-binding / binding / low-can-cb.cpp
index a190b2a..edf464b 100644 (file)
@@ -17,6 +17,7 @@
  */
 
 #include "low-can-hat.hpp"
+#include "low-can-apidef.h"
 
 #include <map>
 #include <queue>
@@ -36,7 +37,6 @@
 #include "../diagnostic/diagnostic-message.hpp"
 #include "../utils/openxc-utils.hpp"
 
-
 ///******************************************************************************
 ///
 ///            SystemD event loop Callbacks
@@ -101,7 +101,10 @@ int read_message(sd_event_source *event_source, int fd, uint32_t revents, void *
 ///
 ///*******************************************************************************/
 
-static int make_subscription_unsubscription(struct afb_req request, std::shared_ptr<low_can_subscription_t>& can_subscription, std::map<int, std::shared_ptr<low_can_subscription_t> >& s, bool subscribe)
+static int make_subscription_unsubscription(struct afb_req request,
+                                                                                       std::shared_ptr<low_can_subscription_t>& can_subscription,
+                                                                                       std::map<int, std::shared_ptr<low_can_subscription_t> >& s,
+                                                                                       bool subscribe)
 {
        /* Make the subscription or unsubscription to the event */
        if (((subscribe ? afb_req_subscribe : afb_req_unsubscribe)(request, s[can_subscription->get_index()]->get_event())) < 0)
@@ -112,7 +115,8 @@ static int make_subscription_unsubscription(struct afb_req request, std::shared_
        return 0;
 }
 
-static int create_event_handle(std::shared_ptr<low_can_subscription_t>& can_subscription, std::map<int, std::shared_ptr<low_can_subscription_t> >& s)
+static int create_event_handle(std::shared_ptr<low_can_subscription_t>& can_subscription,
+                                                       std::map<int, std::shared_ptr<low_can_subscription_t> >& s)
 {
        int sub_index = can_subscription->get_index();
        can_subscription->set_event(afb_daemon_make_event(can_subscription->get_name().c_str()));
@@ -128,7 +132,10 @@ static int create_event_handle(std::shared_ptr<low_can_subscription_t>& can_subs
 /// @brief Will determine if it is needed or not to create the event handle and checks it to be sure that
 /// we got a valid afb_event to get subscribe or unsubscribe. Then launch the subscription or unsubscription
 /// against the application framework using that event handle.
-static int subscribe_unsubscribe_signal(struct afb_req request, bool subscribe, std::shared_ptr<low_can_subscription_t>& can_subscription, std::map<int, std::shared_ptr<low_can_subscription_t> >& s)
+static int subscribe_unsubscribe_signal(struct afb_req request,
+                                                                               bool subscribe,
+                                                                               std::shared_ptr<low_can_subscription_t>& can_subscription,
+                                                                               std::map<int, std::shared_ptr<low_can_subscription_t> >& s)
 {
        int ret = -1;
        int sub_index = can_subscription->get_index();
@@ -168,7 +175,11 @@ static int add_to_event_loop(std::shared_ptr<low_can_subscription_t>& can_subscr
                        can_subscription.get()));
 }
 
-static int subscribe_unsubscribe_diagnostic_messages(struct afb_req request, bool subscribe, std::vector<std::shared_ptr<diagnostic_message_t> > diagnostic_messages, struct event_filter_t& event_filter, std::map<int, std::shared_ptr<low_can_subscription_t> >& s)
+static int subscribe_unsubscribe_diagnostic_messages(struct afb_req request,
+                                                                                                       bool subscribe,
+                                                                                                       std::vector<std::shared_ptr<diagnostic_message_t> > diagnostic_messages,
+                                                                                                       struct event_filter_t& event_filter,
+                                                                                                       std::map<int, std::shared_ptr<low_can_subscription_t> >& s)
 {
        int rets = 0;
        application_t& app = application_t::instance();
@@ -223,7 +234,11 @@ static int subscribe_unsubscribe_diagnostic_messages(struct afb_req request, boo
 }
 
 // TODO: Create separate subscrition object if event_filter isn't the same.
-static int subscribe_unsubscribe_can_signals(struct afb_req request, bool subscribe, std::vector<std::shared_ptr<can_signal_t> > can_signals, struct event_filter_t& event_filter, std::map<int, std::shared_ptr<low_can_subscription_t> >& s)
+static int subscribe_unsubscribe_can_signals(struct afb_req request,
+                                                                                       bool subscribe,
+                                                                                       std::vector<std::shared_ptr<can_signal_t> > can_signals,
+                                                                                       struct event_filter_t& event_filter,
+                                                                                       std::map<int, std::shared_ptr<low_can_subscription_t> >& s)
 {
        int rets = 0;
        for(const auto& sig: can_signals)
@@ -261,7 +276,10 @@ static int subscribe_unsubscribe_can_signals(struct afb_req request, bool subscr
 ///
 /// @return Number of correctly subscribed signal
 ///
-static int subscribe_unsubscribe_signals(struct afb_req request, bool subscribe, const struct utils::signals_found& signals, struct event_filter_t& event_filter)
+static int subscribe_unsubscribe_signals(struct afb_req request,
+                                                                               bool subscribe,
+                                                                               const struct utils::signals_found& signals,
+                                                                               struct event_filter_t& event_filter)
 {
        int rets = 0;
        utils::signals_manager_t& sm = utils::signals_manager_t::instance();
@@ -275,7 +293,10 @@ static int subscribe_unsubscribe_signals(struct afb_req request, bool subscribe,
        return rets;
 }
 
-static int one_subscribe_unsubscribe(struct afb_req request, bool subscribe, const std::string& tag, json_object* args)
+static int one_subscribe_unsubscribe(struct afb_req request,
+                                                                       bool subscribe,
+                                                                       const std::string& tag,
+                                                                       json_object* args)
 {
        int ret = 0;
        struct event_filter_t event_filter;
@@ -287,22 +308,13 @@ static int one_subscribe_unsubscribe(struct afb_req request, bool subscribe, con
        {
                if (json_object_object_get_ex(filter, "frequency", &obj)
                && (json_object_is_type(obj, json_type_double) || json_object_is_type(obj, json_type_int)))
-               {
-                       event_filter.frequency = (float)json_object_get_double(obj);
-                       ret += 1;
-               }
+                       {event_filter.frequency = (float)json_object_get_double(obj);}
                if (json_object_object_get_ex(filter, "min", &obj)
                && (json_object_is_type(obj, json_type_double) || json_object_is_type(obj, json_type_int)))
-               {
-                       event_filter.min = (float)json_object_get_double(obj);
-                       ret += 2;
-               }
+                       {event_filter.min = (float)json_object_get_double(obj);}
                if (json_object_object_get_ex(filter, "max", &obj)
                && (json_object_is_type(obj, json_type_double) || json_object_is_type(obj, json_type_int)))
-               {
-                       event_filter.max = (float)json_object_get_double(obj);
-                       ret += 4;
-               }
+                       {event_filter.max = (float)json_object_get_double(obj);}
        }
 
        // subscribe or unsubscribe
@@ -318,14 +330,12 @@ static int one_subscribe_unsubscribe(struct afb_req request, bool subscribe, con
 
        return ret;
 }
-
-static void do_subscribe_unsubscribe(struct afb_req request, bool subscribe)
+static int process_one_subscribe_args(struct afb_req request, bool subscribe, json_object *args)
 {
-       int i, n, rc, rc2;
-       struct json_object *args, *event, *x;
-
-       args = afb_req_json(request);
-       if (args == NULL || !json_object_object_get_ex(args, "event", &event))
+       int rc = 0, rc2=0;
+       json_object *x = nullptr, *event = nullptr;
+       if(args == NULL ||
+               !json_object_object_get_ex(args, "event", &event))
        {
                rc = one_subscribe_unsubscribe(request, subscribe, "*", args);
        }
@@ -335,9 +345,7 @@ static void do_subscribe_unsubscribe(struct afb_req request, bool subscribe)
        }
        else
        {
-               rc = 0;
-               n = json_object_array_length(event);
-               for (i = 0 ; i < n ; i++)
+               for (int i = 0 ; i < json_object_array_length(event); i++)
                {
                        x = json_object_array_get_idx(event, i);
                        rc2 = one_subscribe_unsubscribe(request, subscribe, json_object_get_string(x), args);
@@ -345,6 +353,27 @@ static void do_subscribe_unsubscribe(struct afb_req request, bool subscribe)
                                rc = rc2 >= 0 ? rc + rc2 : rc2;
                }
        }
+       return rc;
+}
+
+static void do_subscribe_unsubscribe(struct afb_req request, bool subscribe)
+{
+       int rc = 0;
+       struct json_object *args, *x;
+
+       args = afb_req_json(request);
+       if (json_object_get_type(args) == json_type_array)
+       {
+               for(int i = 0; i < json_object_array_length(args); i++)
+               {
+                       x = json_object_array_get_idx(args, i);
+                       rc += process_one_subscribe_args(request, subscribe, x);
+               }
+       }
+       else
+       {
+               rc += process_one_subscribe_args(request, subscribe, args);
+       }
 
        if (rc >= 0)
                afb_req_success(request, NULL, NULL);
@@ -430,11 +459,14 @@ static int write_signal(const std::string& name, uint64_t value)
                        if(sig->get_writable())
                        {
                                cf = encoder_t::build_frame(sig, value);
-                               const std::string bus_name = sig->get_message()->get_bus_name();
+                               const std::string bus_name = sig->get_message()->get_bus_device_name();
                                rc = send_frame(bus_name, cf);
                        }
                        else
-                               {AFB_NOTICE("%s isn't writable. Message not sent.", sig->get_name().c_str());}
+                       {
+                               AFB_WARNING("%s isn't writable. Message not sent.", sig->get_name().c_str());
+                               return -1;
+                       }
                }
        }
 
@@ -463,7 +495,7 @@ void write(struct afb_req request)
                        (json_object_object_get_ex(json_value, "can_dlc", &json_can_dlc) && (json_object_is_type(json_can_dlc, json_type_double) || json_object_is_type(json_can_dlc, json_type_int))) &&
                        (json_object_object_get_ex(json_value, "can_data", &json_can_data) && json_object_is_type(json_can_data, json_type_array) ))
                {
-                       write_raw_frame(json_object_get_string(json_name),
+                       rc = write_raw_frame(json_object_get_string(json_name),
                                json_object_get_int(json_can_id),
                                (uint8_t)json_object_get_int(json_can_dlc),
                                json_can_data);
@@ -479,7 +511,7 @@ void write(struct afb_req request)
                (json_object_object_get_ex(args, "signal_name", &json_name) && json_object_is_type(json_name, json_type_string)) &&
                (json_object_object_get_ex(args, "signal_value", &json_value) && (json_object_is_type(json_value, json_type_double) || json_object_is_type(json_value, json_type_int))))
        {
-               write_signal(json_object_get_string(json_name),
+               rc = write_signal(json_object_get_string(json_name),
                        (uint64_t)json_object_get_double(json_value));
        }
        else
@@ -493,3 +525,135 @@ void write(struct afb_req request)
        else
                afb_req_fail(request, "error", NULL);
 }
+
+static struct json_object *get_signals_value(const std::string& name)
+{
+       struct utils::signals_found sf;
+       struct json_object *ans = nullptr;
+
+       openxc_DynamicField search_key = build_DynamicField(name);
+       sf = utils::signals_manager_t::instance().find_signals(search_key);
+
+       if (sf.can_signals.empty())
+       {
+               AFB_WARNING("No signal(s) found for %s.", name.c_str());
+               return NULL;
+       }
+       ans = json_object_new_array();
+       for(const auto& sig: sf.can_signals)
+       {
+               struct json_object *jobj = json_object_new_object();
+               json_object_object_add(jobj, "event", json_object_new_string(sig->get_name().c_str()));
+               json_object_object_add(jobj, "value", json_object_new_double(sig->get_last_value()));
+               json_object_array_add(ans, jobj);
+       }
+
+       return ans;
+}
+void get(struct afb_req request)
+{
+       int rc = 0;
+       struct json_object* args = nullptr,
+               *json_name = nullptr;
+       json_object *ans = nullptr;
+
+       args = afb_req_json(request);
+
+       // Process about Raw CAN message on CAN bus directly
+       if (args != nullptr &&
+               (json_object_object_get_ex(args, "event", &json_name) && json_object_is_type(json_name, json_type_string) ))
+       {
+               ans = get_signals_value(json_object_get_string(json_name));
+               if (!ans)
+                       rc = -1;
+       }
+       else
+       {
+               AFB_ERROR("Request argument malformed. Please use the following syntax:");
+               rc = -1;
+       }
+
+       if (rc >= 0)
+               afb_req_success(request, ans, NULL);
+       else
+               afb_req_fail(request, "error", NULL);
+}
+
+
+static struct json_object *list_can_message(const std::string& name)
+{
+       struct utils::signals_found sf;
+       struct json_object *ans = nullptr;
+
+       openxc_DynamicField search_key = build_DynamicField(name);
+       sf = utils::signals_manager_t::instance().find_signals(search_key);
+
+       if (sf.can_signals.empty() && sf.diagnostic_messages.empty())
+       {
+               AFB_WARNING("No signal(s) found for %s.", name.c_str());
+               return NULL;
+       }
+       ans = json_object_new_array();
+       for(const auto& sig: sf.can_signals)
+       {
+               json_object_array_add(ans,
+                       json_object_new_string(sig->get_name().c_str()));
+       }
+       for(const auto& sig: sf.diagnostic_messages)
+       {
+               json_object_array_add(ans,
+                       json_object_new_string(sig->get_name().c_str()));
+       }
+
+       return ans;
+}
+
+void list(struct afb_req request)
+{
+       int rc = 0;
+       json_object *ans = nullptr;
+       struct json_object* args = nullptr,
+               *json_name = nullptr;
+       args = afb_req_json(request);
+       const char *name;
+       if ((args != nullptr) &&
+               (json_object_object_get_ex(args, "event", &json_name) && json_object_is_type(json_name, json_type_string)))
+       {
+               name = json_object_get_string(json_name);
+       }
+       else
+       {
+               name = "*";
+       }
+
+       ans = list_can_message(name);
+       if (!ans)
+               rc = -1;
+
+       if (rc >= 0)
+               afb_req_success(request, ans, NULL);
+       else
+               afb_req_fail(request, "error", NULL);
+}
+
+/// @brief Initialize the binding.
+///
+/// @param[in] service Structure which represent the Application Framework Binder.
+///
+/// @return Exit code, zero if success.
+int initv2()
+{
+       can_bus_t& can_bus_manager = application_t::instance().get_can_bus_manager();
+
+       can_bus_manager.set_can_devices();
+       can_bus_manager.start_threads();
+
+       /// Initialize Diagnostic manager that will handle obd2 requests.
+       /// We pass by default the first CAN bus device to its Initialization.
+       /// TODO: be able to choose the CAN bus device that will be use as Diagnostic bus.
+       if(application_t::instance().get_diagnostic_manager().initialize())
+               return 0;
+
+       AFB_ERROR("There was something wrong with CAN device Initialization.");
+       return 1;
+}