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authorRomain Forlot <romain.forlot@iot.bzh>2017-06-20 10:24:05 +0000
committerRomain Forlot <romain.forlot@iot.bzh>2017-06-20 10:24:05 +0000
commit32e25cbca210a359b09768537b6f443fe90a3070 (patch)
tree3309794c15d8a8f8e9c1c08cad072ee1378813ba /CAN-binder/low-can-binding/binding/low-can-cb.cpp
parent76c43dec62b2e21cd6446360c00d4fe6b437533f (diff)
Separation Generator to a dedicated repo
Change-Id: Id94831651c3266861435272a6e36c7884bef2c45 Signed-off-by: Romain Forlot <romain.forlot@iot.bzh>
Diffstat (limited to 'CAN-binder/low-can-binding/binding/low-can-cb.cpp')
-rw-r--r--CAN-binder/low-can-binding/binding/low-can-cb.cpp358
1 files changed, 0 insertions, 358 deletions
diff --git a/CAN-binder/low-can-binding/binding/low-can-cb.cpp b/CAN-binder/low-can-binding/binding/low-can-cb.cpp
deleted file mode 100644
index 97b6d20..0000000
--- a/CAN-binder/low-can-binding/binding/low-can-cb.cpp
+++ /dev/null
@@ -1,358 +0,0 @@
-/*
- * 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-hat.hpp"
-
-#include <map>
-#include <queue>
-#include <mutex>
-#include <vector>
-#include <thread>
-#include <json-c/json.h>
-#include <systemd/sd-event.h>
-
-#include "openxc.pb.h"
-#include "application.hpp"
-#include "../can/can-bus.hpp"
-#include "../can/can-signals.hpp"
-#include "../can/can-message.hpp"
-#include "../utils/signals.hpp"
-#include "../diagnostic/diagnostic-message.hpp"
-#include "../utils/openxc-utils.hpp"
-
-
-///******************************************************************************
-///
-/// SystemD event loop Callbacks
-///
-///*******************************************************************************/
-
-void on_no_clients(std::shared_ptr<low_can_subscription_t> can_subscription, uint32_t pid, std::map<int, std::shared_ptr<low_can_subscription_t> >& s)
-{
- if( ! can_subscription->get_diagnostic_message().empty() && can_subscription->get_diagnostic_message(pid) != nullptr)
- {
- DiagnosticRequest diag_req = can_subscription->get_diagnostic_message(pid)->build_diagnostic_request();
- active_diagnostic_request_t* adr = application_t::instance().get_diagnostic_manager().find_recurring_request(diag_req);
- if( adr != nullptr)
- application_t::instance().get_diagnostic_manager().cleanup_request(adr, true);
- }
-
- on_no_clients(can_subscription, s);
-}
-
-void on_no_clients(std::shared_ptr<low_can_subscription_t> can_subscription, std::map<int, std::shared_ptr<low_can_subscription_t> >& s)
-{
- auto it = s.find(can_subscription->get_index());
- s.erase(it);
-}
-
-static void push_n_notify(const can_message_t& cm)
-{
- can_bus_t& cbm = application_t::instance().get_can_bus_manager();
- {
- std::lock_guard<std::mutex> can_message_lock(cbm.get_can_message_mutex());
- cbm.push_new_can_message(cm);
- }
- cbm.get_new_can_message_cv().notify_one();
-}
-
-int read_message(sd_event_source *event_source, int fd, uint32_t revents, void *userdata)
-{
- low_can_subscription_t* can_subscription = (low_can_subscription_t*)userdata;
- if ((revents & EPOLLIN) != 0)
- {
- can_message_t cm;
- utils::socketcan_bcm_t& s = can_subscription->get_socket();
- s >> cm;
-
- // Sure we got a valid CAN message ?
- if(! cm.get_id() == 0 && ! cm.get_length() == 0)
- {push_n_notify(cm);}
- }
-
- // check if error or hangup
- if ((revents & (EPOLLERR|EPOLLRDHUP|EPOLLHUP)) != 0)
- {
- sd_event_source_unref(event_source);
- can_subscription->get_socket().close();
- }
- return 0;
-}
-
-///******************************************************************************
-///
-/// Subscription and unsubscription
-///
-///*******************************************************************************/
-
-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)
- {
- ERROR("Operation goes wrong for signal: %s", can_subscription->get_name().c_str());
- return -1;
- }
- 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)
-{
- int sub_index = can_subscription->get_index();
- can_subscription->set_event(afb_daemon_make_event(can_subscription->get_name().c_str()));
- s[sub_index] = can_subscription;
- if (!afb_event_is_valid(s[sub_index]->get_event()))
- {
- ERROR("Can't create an event for %s, something goes wrong.", can_subscription->get_name().c_str());
- return -1;
- }
- return 0;
-}
-
-/// @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)
-{
- int ret = -1;
- int sub_index = can_subscription->get_index();
-
- if (can_subscription && s.find(sub_index) != s.end())
- {
- if (!afb_event_is_valid(s[sub_index]->get_event()) && !subscribe)
- {
- NOTICE("Event isn't valid, no need to unsubscribed.");
- ret = -1;
- }
- ret = 0;
- }
- else
- {
- /* Event doesn't exist , so let's create it */
- can_subscription->set_event({nullptr, nullptr});
- s[sub_index] = can_subscription;
- ret = create_event_handle(can_subscription, s);
- }
-
- // Check whether or not the event handler has been correctly created and
- // make the subscription/unsubscription operation is so.
- if (ret < 0)
- return ret;
- return make_subscription_unsubscription(request, can_subscription, s, subscribe);
-}
-
-static int add_to_event_loop(std::shared_ptr<low_can_subscription_t>& can_subscription)
-{
- struct sd_event_source* event_source = nullptr;
- return ( sd_event_add_io(afb_daemon_get_event_loop(),
- &event_source,
- can_subscription->get_socket().socket(),
- EPOLLIN,
- read_message,
- 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)
-{
- int rets = 0;
- application_t& app = application_t::instance();
- diagnostic_manager_t& diag_m = app.get_diagnostic_manager();
-
- for(const auto& sig : diagnostic_messages)
- {
- DiagnosticRequest* diag_req = new DiagnosticRequest(sig->build_diagnostic_request());
- event_filter.frequency = std::isnan(event_filter.frequency) ? sig->get_frequency() : event_filter.frequency;
- std::shared_ptr<low_can_subscription_t> can_subscription;
-
- auto it = std::find_if(s.begin(), s.end(), [&sig](std::pair<int, std::shared_ptr<low_can_subscription_t> > sub){ return (! sub.second->get_diagnostic_message().empty());});
- can_subscription = it != s.end() ?
- it->second :
- std::make_shared<low_can_subscription_t>(low_can_subscription_t(event_filter));
- // If the requested diagnostic message isn't supported by the car then unsubcribe it
- // no matter what we want, worse case will be a fail unsubscription but at least we don't
- // poll a PID for nothing.
- //TODO: Adding callback requesting ignition status: diag_req, sig.c_str(), false, diagnostic_message_t::decode_obd2_response, diagnostic_message_t::check_ignition_status, frequency);
- if(sig->get_supported() && subscribe)
- {
- diag_m.add_recurring_request(diag_req, sig->get_name().c_str(), false, sig->get_decoder(), sig->get_callback(), event_filter.frequency);
- if(can_subscription->create_rx_filter(sig) < 0)
- {return -1;}
- DEBUG("Signal: %s subscribed", sig->get_name().c_str());
- if(it == s.end() && add_to_event_loop(can_subscription) < 0)
- {
- diag_m.cleanup_request(
- diag_m.find_recurring_request(*diag_req), true);
- WARNING("signal: %s isn't supported. Canceling operation.", sig->get_name().c_str());
- return -1;
- }
- }
- else
- {
- if(sig->get_supported())
- {DEBUG("%s cancelled due to unsubscribe", sig->get_name().c_str());}
- else
- {
- WARNING("signal: %s isn't supported. Canceling operation.", sig->get_name().c_str());
- return -1;
- }
- }
- int ret = subscribe_unsubscribe_signal(request, subscribe, can_subscription, s);
- if(ret < 0)
- return ret;
-
- rets++;
- }
-
- return rets;
-}
-
-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)
- {
- auto it = std::find_if(s.begin(), s.end(), [&sig](std::pair<int, std::shared_ptr<low_can_subscription_t> > sub){ return sub.second->get_can_signal() == sig; });
- std::shared_ptr<low_can_subscription_t> can_subscription;
- if(it != s.end())
- {
- can_subscription = it->second;
- }
- else
- {
- can_subscription = std::make_shared<low_can_subscription_t>(low_can_subscription_t(event_filter));
- if(can_subscription->create_rx_filter(sig) < 0)
- {return -1;}
- if(add_to_event_loop(can_subscription) < 0)
- {return -1;}
- }
-
- if(subscribe_unsubscribe_signal(request, subscribe, can_subscription, s) < 0)
- {return -1;}
-
- rets++;
- DEBUG("signal: %s subscribed", sig->get_name().c_str());
- }
- return rets;
-}
-
-///
-/// @brief subscribe to all signals in the vector signals
-///
-/// @param[in] afb_req request : contain original request use to subscribe or unsubscribe
-/// @param[in] subscribe boolean value used to chose between a subscription operation or an unsubscription
-/// @param[in] signals - struct containing vectors with can_signal_t and diagnostic_messages to subscribe
-///
-/// @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)
-{
- int rets = 0;
- utils::signals_manager_t& sm = utils::signals_manager_t::instance();
-
- std::lock_guard<std::mutex> subscribed_signals_lock(sm.get_subscribed_signals_mutex());
- std::map<int, std::shared_ptr<low_can_subscription_t> >& s = sm.get_subscribed_signals();
-
- rets += subscribe_unsubscribe_diagnostic_messages(request, subscribe, signals.diagnostic_messages, event_filter, s);
- rets += subscribe_unsubscribe_can_signals(request, subscribe, signals.can_signals, event_filter, s);
-
- return rets;
-}
-
-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;
- struct json_object *filter, *obj;
- struct utils::signals_found sf;
-
- // computes the filter
- if (json_object_object_get_ex(args, "filter", &filter))
- {
- 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;
- }
- 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;
- }
- 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;
- }
- }
-
- // subscribe or unsubscribe
- openxc_DynamicField search_key = build_DynamicField(tag);
- sf = utils::signals_manager_t::instance().find_signals(search_key);
- if (sf.can_signals.empty() && sf.diagnostic_messages.empty())
- NOTICE("No signal(s) found for %s.", tag.c_str());
- else
- ret = subscribe_unsubscribe_signals(request, subscribe, sf, event_filter);
-
- return ret;
-}
-
-static void do_subscribe_unsubscribe(struct afb_req request, bool subscribe)
-{
- 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))
- {
- rc = one_subscribe_unsubscribe(request, subscribe, "*", args);
- }
- else if (json_object_get_type(event) != json_type_array)
- {
- rc = one_subscribe_unsubscribe(request, subscribe, json_object_get_string(event), args);
- }
- else
- {
- rc = 0;
- n = json_object_array_length(event);
- for (i = 0 ; i < n ; i++)
- {
- x = json_object_array_get_idx(event, i);
- rc2 = one_subscribe_unsubscribe(request, subscribe, json_object_get_string(x), args);
- if (rc >= 0)
- rc = rc2 >= 0 ? rc + rc2 : rc2;
- }
- }
-
- if (rc >= 0)
- afb_req_success(request, NULL, NULL);
- else
- afb_req_fail(request, "error", NULL);
-}
-
-void subscribe(struct afb_req request)
-{
- do_subscribe_unsubscribe(request, true);
-}
-
-void unsubscribe(struct afb_req request)
-{
- do_subscribe_unsubscribe(request, false);
-}