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authorRomain Forlot <romain.forlot@iot.bzh>2017-06-02 02:03:27 +0200
committerRomain Forlot <romain.forlot@iot.bzh>2017-06-02 02:03:27 +0200
commit64f08bebe63e2b58102044ac02deac53bbec2d5f (patch)
treee7d8e6a90d9b1fb082a2a709b160907a6247c6e3 /CAN-binder/low-can-binding
parent1cbfa7de22eb4610980f0f2b38b2d1ae8ffad9f2 (diff)
Fix: Handle several subscriptions to a signal
Change-Id: I460bae0056761f6468ca4dc55a594f1529d53c83 Signed-off-by: Romain Forlot <romain.forlot@iot.bzh>
Diffstat (limited to 'CAN-binder/low-can-binding')
-rw-r--r--CAN-binder/low-can-binding/binding/low-can-cb.cpp72
1 files changed, 46 insertions, 26 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
index 917fb539..d4cc5a11 100644
--- a/CAN-binder/low-can-binding/binding/low-can-cb.cpp
+++ b/CAN-binder/low-can-binding/binding/low-can-cb.cpp
@@ -310,14 +310,11 @@ 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)
+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;
int sub_index = can_subscription->get_index();
- 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();
if (can_subscription && s.find(sub_index) != s.end())
{
if (!afb_event_is_valid(s[sub_index]->get_event()) && !subscribe)
@@ -325,11 +322,6 @@ static int subscribe_unsubscribe_signal(struct afb_req request, bool subscribe,
NOTICE(binder_interface, "%s: Event isn't valid, no need to unsubscribed.", __FUNCTION__);
ret = -1;
}
- else
- {
- // Event it isn't valid anymore, recreate it
- ret = create_event_handle(can_subscription, s);
- }
}
else
{
@@ -346,7 +338,7 @@ static int subscribe_unsubscribe_signal(struct afb_req request, bool subscribe,
return make_subscription_unsubscription(request, can_subscription, s, subscribe);
}
-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)
+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();
@@ -356,44 +348,68 @@ int subscribe_unsubscribe_diagnostic_messages(struct afb_req request, bool subsc
{
DiagnosticRequest* diag_req = app.get_request_from_diagnostic_message(sig->get_name());
float frequency = std::isnan(event_filter.frequency) ? sig->get_frequency() : event_filter.frequency;
+ std::shared_ptr<low_can_subscription_t> can_subscription;
// 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(), frequency) != nullptr)
+ if(sig->get_supported() && subscribe)
{
- std::shared_ptr<low_can_subscription_t> can_subscription(new low_can_subscription_t(event_filter, sig));
- int ret = subscribe_unsubscribe_signal(request, subscribe, can_subscription);
- if(ret < 0)
- return ret;
- rets++;
- DEBUG(binder_interface, "%s: Signal: %s subscribed", __FUNCTION__, sig->get_name().c_str());
+ if (s.find(sig->get_pid()) != s.end())
+ {
+ can_subscription = s[sig->get_pid()];
+ DEBUG(binder_interface, "%s: Signal: %s already subscribed. Adding a new subscription", __FUNCTION__, sig->get_name().c_str());
+ }
+ else
+ {
+ diag_m.add_recurring_request(diag_req, sig->get_name().c_str(), false, sig->get_decoder(), sig->get_callback(), frequency);
+ can_subscription = std::make_shared<low_can_subscription_t>(low_can_subscription_t(event_filter, sig));
+ DEBUG(binder_interface, "%s: Signal: %s subscribed", __FUNCTION__, sig->get_name().c_str());
+ }
}
else
{
diag_m.cleanup_request(
diag_m.find_recurring_request(diag_req), true);
- WARNING(binder_interface, "%s: signal: %s isn't supported. Canceling operation.", __FUNCTION__, sig->get_name().c_str());
delete diag_req;
diag_req = nullptr;
+ if(sig->get_supported())
+ {
+ DEBUG(binder_interface, "%s: %s cancelled due to unsubscribe", __FUNCTION__, sig->get_name().c_str());
+ return 0;
+ }
+ WARNING(binder_interface, "%s: signal: %s isn't supported. Canceling operation.", __FUNCTION__, 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;
}
-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)
+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)
{
- std::shared_ptr<low_can_subscription_t> can_subscription(new low_can_subscription_t(event_filter));
- if(can_subscription->create_rx_filter(sig) < 0)
- {return -1;}
- else if(subscribe_unsubscribe_signal(request, subscribe, can_subscription) < 0)
+ 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(subscribe_unsubscribe_signal(request, subscribe, can_subscription, s) < 0)
{return -1;}
struct sd_event_source* e_source;
@@ -416,9 +432,13 @@ int subscribe_unsubscribe_can_signals(struct afb_req request, bool subscribe, st
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);
- rets += subscribe_unsubscribe_can_signals(request, subscribe, signals.can_signals, event_filter);
+ 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;
}