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-rw-r--r--low-can-binding/binding/low-can-cb.cpp85
1 files changed, 39 insertions, 46 deletions
diff --git a/low-can-binding/binding/low-can-cb.cpp b/low-can-binding/binding/low-can-cb.cpp
index d25f0683..daeb5a0b 100644
--- a/low-can-binding/binding/low-can-cb.cpp
+++ b/low-can-binding/binding/low-can-cb.cpp
@@ -1,5 +1,5 @@
/*
- * Copyright (C) 2015, 2016 "IoT.bzh"
+ * Copyright (C) 2015, 2018 "IoT.bzh"
* Author "Romain Forlot" <romain.forlot@iot.bzh>
* Author "Loic Collignon" <loic.collignon@iot.bzh>
*
@@ -109,35 +109,6 @@ int read_message(sd_event_source *event_source, int fd, uint32_t revents, void *
///
///*******************************************************************************/
-static int make_subscription_unsubscription(afb_req_t 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 request is not null) */
- if(request &&
- ((subscribe ? afb_req_subscribe : afb_req_unsubscribe)(request, s[can_subscription->get_index()]->get_event())) < 0)
- {
- AFB_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()))
- {
- AFB_ERROR("Can't create an event for %s, something goes wrong.", can_subscription->get_name().c_str());
- return -1;
- }
- return 0;
-}
-
/// @brief This will determine if an event handle needs to be created and checks if
/// we got a valid afb_event to get subscribe or unsubscribe. After that launch the subscription or unsubscription
/// against the application framework using that event handle.
@@ -146,30 +117,52 @@ static int subscribe_unsubscribe_signal(afb_req_t request,
std::shared_ptr<low_can_subscription_t>& can_subscription,
std::map<int, std::shared_ptr<low_can_subscription_t> >& s)
{
- int ret = -1;
+ int ret = 0;
int sub_index = can_subscription->get_index();
+ bool subscription_exists = s.count(sub_index);
- if (can_subscription && s.find(sub_index) != s.end())
+ // Susbcription part
+ if(subscribe)
{
- if (!afb_event_is_valid(s[sub_index]->get_event()) && !subscribe)
+ /* There is no valid request to subscribe so this must be an
+ * internal permanent diagnostic request. Skip the subscription
+ * part and don't register it into the current "low-can"
+ * subsciptions.
+ */
+ if(! request)
{
- AFB_NOTICE("Event isn't valid, no need to unsubscribed.");
- ret = -1;
+ return 0;
}
- ret = 0;
+
+ // Event doesn't exist , so let's create it
+ if (! subscription_exists &&
+ (ret = can_subscription->subscribe(request)) < 0)
+ return ret;
+
+ if(! subscription_exists)
+ s[sub_index] = can_subscription;
+
+ return ret;
}
- else
+
+ // Unsubscrition part
+ if(! subscription_exists)
{
- /* Event doesn't exist , so let's create it */
- s[sub_index] = can_subscription;
- ret = create_event_handle(can_subscription, s);
+ AFB_NOTICE("There isn't any valid subscriptions for that request.");
+ return ret;
+ }
+ else if (subscription_exists &&
+ ! afb_event_is_valid(s[sub_index]->get_event()) )
+ {
+ AFB_NOTICE("Event isn't valid, no need to unsubscribed.");
+ return ret;
}
- // Checks if the event handler is correctly created, if it is, it
- // performs the subscription or unsubscription operations.
- if (ret < 0)
+ if( (ret = s[sub_index]->unsubscribe(request)) < 0)
return ret;
- return make_subscription_unsubscription(request, can_subscription, s, subscribe);
+ s.erase(sub_index);
+
+ return ret;
}
static int add_to_event_loop(std::shared_ptr<low_can_subscription_t>& can_subscription)
@@ -411,10 +404,10 @@ static int send_frame(struct canfd_frame& cfd, const std::string& bus_name)
return -1;
}
- std::map<std::string, std::shared_ptr<low_can_socket_t> >& cd = application_t::instance().get_can_devices();
+ std::map<std::string, std::shared_ptr<low_can_subscription_t> >& cd = application_t::instance().get_can_devices();
if( cd.count(bus_name) == 0)
- {cd[bus_name] = std::make_shared<low_can_socket_t>(low_can_socket_t());}
+ {cd[bus_name] = std::make_shared<low_can_subscription_t>(low_can_subscription_t());}
return cd[bus_name]->tx_send(cfd, bus_name);
}