X-Git-Url: https://gerrit.automotivelinux.org/gerrit/gitweb?a=blobdiff_plain;f=AFBClient.cpp;h=5fadc35085ca78423f3398aa9d60de1e428577e1;hb=839032bb4aa57418289d829dd57f66b094ceb700;hp=6fcb207d1a7d80c17149358b067a60e6952b1e9b;hpb=9128c27958d1475fd13ed625f5f5c0510e8e68bb;p=staging%2Fwindowmanager.git diff --git a/AFBClient.cpp b/AFBClient.cpp index 6fcb207..5fadc35 100644 --- a/AFBClient.cpp +++ b/AFBClient.cpp @@ -7,6 +7,11 @@ #include #include +#include +#include +#include +#include + #include #include @@ -20,6 +25,41 @@ extern "C" { #define UNUSED(x) (void)(x) +// _ ___ _ +// ___| | __ _ ___ ___ |_ _|_ __ ___ _ __ | | +// / __| |/ _` / __/ __| | || '_ ` _ \| '_ \| | +// | (__| | (_| \__ \__ \ | || | | | | | |_) | | +// \___|_|\__,_|___/___/ |___|_| |_| |_| .__/|_| +// |_| +class AFBClient::Impl { + friend class AFBClient; + + // This is the AFBClient interface impl + int init(int port, char const *token); + int dispatch(); + + // WM API + int requestSurface(const char *label); + int activateSurface(const char *label); + int deactivateSurface(const char *label); + int endDraw(const char *label); + + void set_event_handler(enum EventType et, + std::function f); + + Impl(); + ~Impl(); + + struct afb_wsj1 *wsj1; + struct sd_event *loop; + + std::set labels; + std::map handlers; + +public: + void event(char const *et, char const *label); +}; + namespace { constexpr const int token_maxlen = 20; @@ -53,24 +93,17 @@ void onCall(void *closure, const char *api, const char *verb, struct afb_wsj1_msg *msg) { TRACE(); UNUSED(closure); - int rc; - printf("ON-CALL %s/%s:\n%s\n", api, verb, - json_object_to_json_string_ext(afb_wsj1_msg_object_j(msg), - JSON_C_TO_STRING_PRETTY)); - fflush(stdout); - rc = afb_wsj1_reply_error_s(msg, "\"unimplemented\"", nullptr); - if (rc < 0) - fprintf(stderr, "replying failed: %m\n"); + UNUSED(verb); + UNUSED(api); + UNUSED(msg); } /* called when wsj1 receives an event */ void onEvent(void *closure, const char *event, afb_wsj1_msg *msg) { TRACE(); - UNUSED(closure); - printf("ON-EVENT %s:\n%s\n", event, - json_object_to_json_string_ext(afb_wsj1_msg_object_j(msg), - JSON_C_TO_STRING_PRETTY)); - fflush(stdout); + reinterpret_cast(closure)->event( + event, json_object_get_string( + json_object_object_get(afb_wsj1_msg_object_j(msg), "data"))); } /* called when wsj1 hangsup */ @@ -83,33 +116,101 @@ void onHangup(void *closure, afb_wsj1 *wsj1) { exit(0); } -static struct afb_wsj1_itf itf = { +constexpr static struct afb_wsj1_itf itf = { onHangup, onCall, onEvent, }; -void dispatch_internal(AFBClient *c, uint64_t timeout) { +// XXX: I am not sure this is the right thing to do though... +std::recursive_mutex dispatch_mutex; + +void dispatch_internal(struct sd_event *loop) { + std::lock_guard guard(dispatch_mutex); TRACE(); - c->dispatch(timeout); + sd_event_run(loop, -1); } -} // namespace - -AFBClient &AFBClient::instance() { +/// object will be json_object_put +int api_call(struct sd_event *loop, struct afb_wsj1 *wsj1, const char *verb, + json_object *object, + std::function onReply) { TRACE(); - static AFBClient obj; - return obj; + + // We need to wrap the actual onReply call once in order to + // *look* like a normal functions pointer (std::functions<> + // with captures cannot convert to function pointers). + // Alternatively we could setup a local struct and use it as + // closure, but I think it is cleaner this way. + int call_rc = 0; + std::atomic returned; + returned.store(false, std::memory_order_relaxed); + std::function wrappedOnReply = + [&returned, &call_rc, &onReply](bool ok, json_object *j) { + TRACEN(wrappedOnReply); + call_rc = ok ? 0 : -EINVAL; + // We know it failed, but there may be an explanation in the + // json object. + { + TRACEN(onReply); + onReply(ok, j); + } + returned.store(true, std::memory_order_release); + }; + + // make the actual call, use wrappedOnReply as closure + int rc = afb_wsj1_call_j( + wsj1, wmAPI, verb, object, + [](void *closure, afb_wsj1_msg *msg) { + TRACEN(callClosure); + auto *onReply = + reinterpret_cast *>( + closure); + (*onReply)(!!afb_wsj1_msg_is_reply_ok(msg), + afb_wsj1_msg_object_j(msg)); + }, + &wrappedOnReply); + + if (rc < 0) { + fprintf( + stderr, "calling %s/%s(%s) failed: %m\n", wmAPI, verb, + json_object_to_json_string_ext(object, JSON_C_TO_STRING_PRETTY)); + // Call the reply handler regardless with a NULL json_object* + onReply(false, nullptr); + } else { + // We need to dispatch until "returned" got set, this is necessary + // if events get triggered by the call (and would be dispatched before + // the actual call-reply). + while (!returned.load(std::memory_order_consume)) { + std::lock_guard guard(dispatch_mutex); + if (!returned.load(std::memory_order_consume)) { + dispatch_internal(loop); + } + } + + // return the actual API call result + rc = call_rc; + } + + return rc; } -AFBClient::AFBClient() : wsj1{}, loop{} { TRACE(); } +} // namespace + +// _ ___ _ _ _ +// ___| | __ _ ___ ___ |_ _|_ __ ___ _ __ | | (_)_ __ ___ _ __ | | +// / __| |/ _` / __/ __| | || '_ ` _ \| '_ \| | | | '_ ` _ \| '_ \| | +// | (__| | (_| \__ \__ \ | || | | | | | |_) | | | | | | | | | |_) | | +// \___|_|\__,_|___/___/ |___|_| |_| |_| .__/|_| |_|_| |_| |_| .__/|_| +// |_| |_| +AFBClient::Impl::Impl() : wsj1{}, loop{}, labels(), handlers() { TRACE(); } -AFBClient::~AFBClient() { +AFBClient::Impl::~Impl() { TRACE(); afb_wsj1_unref(wsj1); sd_event_unref(loop); loop = nullptr; } -int AFBClient::init(int port, char const *token) { +int AFBClient::Impl::init(int port, char const *token) { TRACE(); char *uribuf = nullptr; int rc = -1; @@ -145,7 +246,8 @@ int AFBClient::init(int port, char const *token) { asprintf(&uribuf, "ws://localhost:%d/api?token=%s", port, token); /* connect the websocket wsj1 to the uri given by the first argument */ - wsj1 = afb_ws_client_connect_wsj1(loop, uribuf, &itf, nullptr); + wsj1 = afb_ws_client_connect_wsj1( + loop, uribuf, const_cast(&itf), this); if (wsj1 == nullptr) { sd_event_unref(loop); fprintf(stderr, "Connection to %s failed: %m\n", uribuf); @@ -159,45 +261,63 @@ fail: return rc; } -int AFBClient::dispatch(uint64_t timeout) { - return sd_event_run(loop, timeout); +int AFBClient::Impl::dispatch() { + std::lock_guard guard(dispatch_mutex); + return sd_event_run(loop, 1); } -int AFBClient::requestSurface(const char *label) { +int AFBClient::Impl::requestSurface(const char *label) { TRACE(); + + if (this->labels.find(label) != this->labels.end()) { + fprintf(stderr, "Surface label already known!\n"); + return -EINVAL; + } + json_object *jp = json_object_new_object(); json_object_object_add(jp, "drawing_name", json_object_new_string(label)); + int rc = -1; /* send the request */ - int rc2 = call("request_surface", jp, [&rc](bool ok, json_object *j) { - if (ok) { - int id = json_object_get_int(json_object_object_get(j, "response")); - char *buf; - asprintf(&buf, "%d", id); - printf("setenv(\"QT_IVI_SURFACE_ID\", %s, 1)\n", buf); - if (setenv("QT_IVI_SURFACE_ID", buf, 1) != 0) { - fprintf(stderr, "putenv failed: %m\n"); - rc = -errno; + int rc2 = api_call( + loop, wsj1, "request_surface", jp, [&rc](bool ok, json_object *j) { + if (ok) { + int id = + json_object_get_int(json_object_object_get(j, "response")); + char *buf; + asprintf(&buf, "%d", id); + printf("setenv(\"QT_IVI_SURFACE_ID\", %s, 1)\n", buf); + if (setenv("QT_IVI_SURFACE_ID", buf, 1) != 0) { + fprintf(stderr, "putenv failed: %m\n"); + rc = -errno; + } else { + rc = 0; // Single point of success + } } else { - rc = 0; // Single point of success + fprintf(stderr, "Could not get surface ID from WM: %s\n", + j ? json_object_to_json_string_ext( + j, JSON_C_TO_STRING_PRETTY) + : "no-info"); + rc = -EINVAL; } - } else { - fprintf( - stderr, "Could not get surface ID from WM: %s\n", - j ? json_object_to_json_string_ext(j, JSON_C_TO_STRING_PRETTY) - : "no-info"); - rc = -EINVAL; - } - }); + }); - return rc2 < 0 ? rc2 : rc; + if (rc2 < 0) + rc = rc2; + + if (rc >= 0) { + this->labels.insert(this->labels.end(), label); + } + + return rc; } -int AFBClient::activateSurface(const char *label) { +int AFBClient::Impl::activateSurface(const char *label) { TRACE(); json_object *j = json_object_new_object(); json_object_object_add(j, "drawing_name", json_object_new_string(label)); - return call("activate_surface", j, [](bool ok, json_object *j) { + return api_call(loop, wsj1, "activate_surface", j, [](bool ok, + json_object *j) { if (!ok) { fprintf( stderr, "API Call activate_surface() failed: %s\n", @@ -207,11 +327,12 @@ int AFBClient::activateSurface(const char *label) { }); } -int AFBClient::deactivateSurface(const char *label) { +int AFBClient::Impl::deactivateSurface(const char *label) { TRACE(); json_object *j = json_object_new_object(); json_object_object_add(j, "drawing_name", json_object_new_string(label)); - return call("deactivate_surface", j, [](bool ok, json_object *j) { + return api_call(loop, wsj1, "deactivate_surface", j, [](bool ok, + json_object *j) { if (!ok) { fprintf( stderr, "API Call deactivate_surface() failed: %s\n", @@ -221,11 +342,11 @@ int AFBClient::deactivateSurface(const char *label) { }); } -int AFBClient::endDraw(const char *label) { +int AFBClient::Impl::endDraw(const char *label) { TRACE(); json_object *j = json_object_new_object(); json_object_object_add(j, "drawing_name", json_object_new_string(label)); - return call("enddraw", j, [](bool ok, json_object *j) { + return api_call(loop, wsj1, "enddraw", j, [](bool ok, json_object *j) { if (!ok) { fprintf( stderr, "API Call endDraw() failed: %s\n", @@ -235,69 +356,97 @@ int AFBClient::endDraw(const char *label) { }); } -/// object will be json_object_put -int AFBClient::call(const char *verb, json_object *object, - std::function onReply) { +void AFBClient::Impl::set_event_handler( + enum EventType et, std::function func) { + UNUSED(et); + UNUSED(func); TRACE(); - // We need to wrap the actual onReply call once in order to - // *look* like a normal functions pointer (std::functions<> - // with captures cannot convert to function pointers). - // Alternatively we could setup a local struct and use it as - // closure, but I think it is cleaner this way. - int call_rc = 0; - bool returned = false; - std::function wrappedOnReply = - [&returned, &call_rc, &onReply](bool ok, json_object *j) { - TRACEN(wrappedOnReply); - call_rc = ok ? 0 : -EINVAL; - // We know it failed, but there may be an explanation in the - // json object. - { - TRACEN(onReply); - onReply(ok, j); - } - returned = true; - }; + if (et >= 1 && et <= 6) { // Yeah ... just go with it! + this->handlers[et] = std::move(func); + } +} - // make the actual call, use wrappedOnReply as closure - int rc = afb_wsj1_call_j( - wsj1, wmAPI, verb, object, - [](void *closure, afb_wsj1_msg *msg) { - TRACEN(callClosure); - auto *onReply = - reinterpret_cast *>( - closure); - (*onReply)(!!afb_wsj1_msg_is_reply_ok(msg), - afb_wsj1_msg_object_j(msg)); - }, - &wrappedOnReply); +namespace { +std::pair make_event_type(char const *et) { + // Event have the form "$API/$EVENT", just try to find the first / and + // get on with it. + char const *et2 = strchr(et, '/'); + if (et2) { + et = et2 + 1; + } - if (rc < 0) { - fprintf( - stderr, "calling %s/%s(%s) failed: %m\n", wmAPI, verb, - json_object_to_json_string_ext(object, JSON_C_TO_STRING_PRETTY)); - // Call the reply handler regardless with a NULL json_object* - onReply(false, nullptr); - } else { - // We need to dispatch until "returned" got set, this is necessary - // if events get triggered by the call (and would be dispatched before - // the actual call-reply). - while (!returned) { - dispatch_internal(this, -1); - } +#define ET(N, A) \ + do { \ + if (strcasecmp(et, N) == 0) \ + return std::make_pair( \ + true, CONCAT(AFBClient::Event_, A)); \ + } while (0) + + ET("activated", Active); + ET("deactivated", Inactive); + ET("visible", Visible); + ET("invisible", Invisible); + ET("syncdraw", SyncDraw); + ET("flushdraw", FlushDraw); +#undef ET + + return std::make_pair(false, + AFBClient::Event_Active); +} +} // namespace - // return the actual API call result - rc = call_rc; +void AFBClient::Impl::event(char const *et, char const *label) { + TRACE(); + auto oet = make_event_type(et); + if (!oet.first) { + fprintf(stderr, "Unknown event type string '%s'\n", et); + return; } - return rc; + auto i = this->handlers.find(oet.second); + if (i != this->handlers.end()) { + i->second(label); + } +} + +// _ _ _____ ____ ____ _ _ _ +// ___| | __ _ ___ ___ / \ | ___| __ ) / ___| (_) ___ _ __ | |_ +// / __| |/ _` / __/ __| / _ \ | |_ | _ \| | | | |/ _ \ '_ \| __| +// | (__| | (_| \__ \__ \ / ___ \| _| | |_) | |___| | | __/ | | | |_ +// \___|_|\__,_|___/___/ /_/ \_\_| |____/ \____|_|_|\___|_| |_|\__| +// +int AFBClient::init(int port, char const *token) { + return this->d->init(port, token); } +int AFBClient::dispatch() { return this->d->dispatch(); } + +int AFBClient::requestSurface(const char *label) { + return this->d->requestSurface(label); +} + +int AFBClient::activateSurface(const char *label) { + return this->d->activateSurface(label); +} + +int AFBClient::deactivateSurface(const char *label) { + return this->d->deactivateSurface(label); +} + +int AFBClient::endDraw(const char *label) { return this->d->endDraw(label); } + void AFBClient::set_event_handler(enum EventType et, - std::function func) { - UNUSED(et); - UNUSED(func); + std::function f) { + return this->d->set_event_handler(et, std::move(f)); +} + +AFBClient &AFBClient::instance() { TRACE(); - // XXX todo + static AFBClient obj; + return obj; } + +AFBClient::AFBClient() : d(new Impl) {} + +AFBClient::~AFBClient() { delete d; }