X-Git-Url: https://gerrit.automotivelinux.org/gerrit/gitweb?a=blobdiff_plain;f=AFBClient.cpp;h=407aeac0ff7b8ad4a7c3e9fda3a63dd8e670c6ba;hb=b8ec6408f237065d6f87a23bcfe6c20ac56528bf;hp=283e22c5b73137ee562e2172aa21375801079f03;hpb=4a2c73eca3713fa049c86d021aae27ac66c4e481;p=staging%2Fwindowmanager.git diff --git a/AFBClient.cpp b/AFBClient.cpp index 283e22c..407aeac 100644 --- a/AFBClient.cpp +++ b/AFBClient.cpp @@ -1,177 +1,61 @@ #include "AFBClient.h" -#include -#include -#include -#include +#include +#include +#include +#include +#include +#include #include #define UNUSED(x) (void)(x) -extern "C" { -extern struct afb_wsj1 *afb_ws_client_connect_wsj1(struct sd_event *eloop, const char *uri, struct afb_wsj1_itf *itf, void *closure); -extern int afb_wsj1_call_s(struct afb_wsj1 *wsj1, const char *api, const char *verb, const char *object, void (*on_reply)(void *closure, struct afb_wsj1_msg *msg), void *closure); -extern int afb_wsj1_msg_is_reply_ok(struct afb_wsj1_msg *msg); -extern int afb_wsj1_send_event_s(struct afb_wsj1 *wsj1, const char *event, const char *object); -static inline int afb_wsj1_reply_error_s(struct afb_wsj1_msg *msg, const char *object, const char *token); -} +namespace { -const char * AFBClient::wmURI = "ws://localhost:1700/api?token=wm"; -const char * AFBClient::wmAPI = "winman"; +constexpr const int token_maxlen = 20; +constexpr const char *const wmAPI = "winman"; -AFBClient::AFBClient() : itf() -{ - ///* itinializing the callback interface for wsj1 */ - itf.on_hangup = AFBClient::onHangup; - itf.on_call = AFBClient::onCall; - itf.on_event = AFBClient::onEvent; -} +#ifdef NDEBUG +#define TRACE() +#define TRACEN(N) +#else +#define CONCAT_(X, Y) X##Y +#define CONCAT(X, Y) CONCAT_(X, Y) -AFBClient::~AFBClient() -{ -} - -bool AFBClient::init() -{ - printf("init() -->\n"); - /* get the default event loop */ - int rc = sd_event_default(&loop); - if (rc < 0) { - fprintf(stderr, "Connection to default event loop failed: %s\n", strerror(-rc)); - return false; - } +#define TRACE() \ + ScopeTrace __attribute__((unused)) CONCAT(trace_scope_, __LINE__)(__func__) +#define TRACEN(N) \ + ScopeTrace __attribute__((unused)) CONCAT(named_trace_scope_, __LINE__)(#N) - /* connect the websocket wsj1 to the uri given by the first argument */ - wsj1 = afb_ws_client_connect_wsj1(loop, wmURI, &itf, NULL); - if (wsj1 == NULL) { - fprintf(stderr, "Connection to %s failed: %m\n", wmURI); - return false; +struct ScopeTrace { + static int indent; + char const *f{}; + ScopeTrace(char const *func) : f(func) { + fprintf(stderr, "%*s%s -->\n", 2 * indent++, "", this->f); } - - printf("init() <--\n"); - return true; -} - -int AFBClient::requestSurface(const char *label) -{ - printf("requestSurface(%s) -->\n", label); - constexpr char const *verb = "request_surface"; - int ret = -1; - - json_object *jp = json_object_new_object(); - json_object_object_add(jp, "drawing_name", json_object_new_string(label)); - - // std::experimental::optional look-alike - struct optional { - int value; - bool is_not_set; - }; - - constexpr struct optional const nullopt = {0, true}; - auto id = nullopt; - - /* send the request */ - int rc = afb_wsj1_call_j( - wsj1, AFBClient::wmAPI, verb, jp, - [](void *closure, afb_wsj1_msg *msg) { - if (afb_wsj1_msg_is_reply_ok(msg)) { - int id = json_object_get_int( - json_object_object_get(afb_wsj1_msg_object_j(msg), "response")); - auto oid = (optional *)closure; - *oid = optional{id}; - } else - fprintf(stderr, "wrong request surface reply received!\n"); - }, - (void *)&id); - - if (rc < 0) { - fprintf(stderr, "calling %s/%s(%s) failed: %m\n", AFBClient::wmAPI, verb, - json_object_to_json_string(jp)); - } else { - // Lets make this call sync here... - dispatch(-1); - - if (! id.is_not_set) { - char *buf; - asprintf(&buf, "%d", id.value); - 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"); - } else { - ret = 0; // Single point of success - } - } else { - fprintf(stderr, "Could not get surface ID from WM\n"); - } - } - - printf("requestSurface(%s) = %d <--\n", label, ret); - - return ret; -} - -void AFBClient::activateSurface(const char *label) -{ - printf("activateSurface(%s) -->\n", label); - fflush(stdout); - - const char begin[] = "{\"drawing_name\":\""; - const char end[] = "\"}"; - const char verb[] = "activate_surface"; - char *parameter = (char *)malloc(strlen(begin) + - strlen(label) + - strlen(end) + 1); - strcpy(parameter, begin); - strcat(parameter, label); - strcat(parameter, end); - call(AFBClient::wmAPI, verb, parameter); - - // Sync this one too - dispatch(-1); - - printf("activateSurface(%s) <--\n", label); - fflush(stdout); -} - -int AFBClient::dispatch(uint64_t timeout) { - return sd_event_run(loop, timeout); -} - -void AFBClient::deactivateSurface(const char *label) -{ - json_object *j = json_object_new_object(); - json_object_object_add(j, "drawing_name", json_object_new_string(label)); - call(AFBClient::wmAPI, "deactivate_surface", json_object_to_json_string(j)); - json_object_put(j); - dispatch(-1); -} - -void AFBClient::endDraw(const char *label) -{ - json_object *j = json_object_new_object(); - json_object_object_add(j, "drawing_name", json_object_new_string(label)); - call(AFBClient::wmAPI, "enddraw", json_object_to_json_string(j)); - json_object_put(j); - dispatch(-1); -} + ~ScopeTrace() { fprintf(stderr, "%*s%s <--\n", 2 * --indent, "", this->f); } +}; +int ScopeTrace::indent = 0; +#endif /* called when wsj1 receives a method invocation */ -void AFBClient::onCall(void *closure, const char *api, const char *verb, struct afb_wsj1_msg *msg) -{ +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\"", NULL); + rc = afb_wsj1_reply_error_s(msg, "\"unimplemented\"", nullptr); if (rc < 0) fprintf(stderr, "replying failed: %m\n"); } /* called when wsj1 receives an event */ -void AFBClient::onEvent(void *closure, const char *event, afb_wsj1_msg *msg) -{ +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), @@ -180,8 +64,8 @@ void AFBClient::onEvent(void *closure, const char *event, afb_wsj1_msg *msg) } /* called when wsj1 hangsup */ -void AFBClient::onHangup(void *closure, afb_wsj1 *wsj1) -{ +void onHangup(void *closure, afb_wsj1 *wsj1) { + TRACE(); UNUSED(closure); UNUSED(wsj1); printf("ON-HANGUP\n"); @@ -189,45 +73,214 @@ void AFBClient::onHangup(void *closure, afb_wsj1 *wsj1) exit(0); } -/* called when wsj1 receives a reply */ -void AFBClient::onReply(void *closure, afb_wsj1_msg *msg) -{ - printf("ON-REPLY %s: %s\n%s\n", (char*)closure, - afb_wsj1_msg_is_reply_ok(msg) ? "OK" : "ERROR", - json_object_to_json_string_ext(afb_wsj1_msg_object_j(msg), - JSON_C_TO_STRING_PRETTY)); - fflush(stdout); - free(closure); +} // namespace + +AFBClient &AFBClient::instance() { + TRACE(); + static AFBClient obj; + return obj; } -/* makes a call */ -void AFBClient::call(const char *api, const char *verb, const char *object) -{ - static int num = 0; - char *key; - int rc; +AFBClient::AFBClient() : wsj1{}, itf{}, loop{} { + TRACE(); + itf.on_hangup = onHangup; + itf.on_call = onCall; + itf.on_event = onEvent; +} - printf("call(%s, %s, %s) -->\n", api, verb, object); - fflush(stdout); +AFBClient::~AFBClient() { + TRACE(); + afb_wsj1_unref(wsj1); + sd_event_unref(loop); + loop = nullptr; +} + +int AFBClient::init(int port, char const *token) { + TRACE(); + char *uribuf = nullptr; + int rc = -1; + + if (!token || strlen(token) > token_maxlen) { + fprintf(stderr, "Token is invalid\n"); + rc = -EINVAL; + goto fail; + } + + for (char const *p = token; *p; p++) { + if (!isalnum(*p)) { + fprintf(stderr, "Token is invalid\n"); + rc = -EINVAL; + goto fail; + } + } + + if (port < 1 && port > 0xffff) { + fprintf(stderr, "Port is invalid\n"); + rc = -EINVAL; + goto fail; + } + + /* get the default event loop */ + rc = sd_event_default(&loop); + if (rc < 0) { + fprintf(stderr, "Connection to default event loop failed: %s\n", + strerror(-rc)); + goto fail; + } + + asprintf(&uribuf, "ws://localhost:%d/api?token=%s", port, token); - /* allocates an id for the request */ - rc = asprintf(&key, "%d:%s/%s", ++num, api, verb); + /* connect the websocket wsj1 to the uri given by the first argument */ + wsj1 = afb_ws_client_connect_wsj1(loop, uribuf, &itf, nullptr); + if (wsj1 == nullptr) { + sd_event_unref(loop); + fprintf(stderr, "Connection to %s failed: %m\n", uribuf); + rc = -errno; + goto fail; + } + + return 0; + +fail: + return rc; +} +int AFBClient::dispatch(uint64_t timeout) { + return sd_event_run(loop, timeout); +} + +int AFBClient::requestSurface(const char *label) { + TRACE(); + 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 */ - rc = afb_wsj1_call_s(wsj1, api, verb, object, AFBClient::onReply, key); - if (rc < 0) - fprintf(stderr, "calling %s/%s(%s) failed: %m\n", api, verb, object); + 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; + } else { + rc = 0; // Single point of success + } + } 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; +} - printf("call(%s, %s, %s) <--\n", api, verb, object); - fflush(stdout); +int AFBClient::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) { + if (!ok) { + fprintf( + stderr, "API Call activate_surface() failed: %s\n", + j ? json_object_to_json_string_ext(j, JSON_C_TO_STRING_PRETTY) + : "no-info"); + } + }); } -/* sends an event */ -void AFBClient::event(const char *event, const char *object) -{ - int rc; +int AFBClient::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) { + if (!ok) { + fprintf( + stderr, "API Call deactivate_surface() failed: %s\n", + j ? json_object_to_json_string_ext(j, JSON_C_TO_STRING_PRETTY) + : "no-info"); + } + }); +} - rc = afb_wsj1_send_event_s(wsj1, event, object); - if (rc < 0) - fprintf(stderr, "sending !%s(%s) failed: %m\n", event, object); +int AFBClient::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) { + if (!ok) { + fprintf( + stderr, "API Call endDraw() failed: %s\n", + j ? json_object_to_json_string_ext(j, JSON_C_TO_STRING_PRETTY) + : "no-info"); + } + }); +} + +/// object will be json_object_put +int AFBClient::call(const char *verb, json_object *object, + std::function onReply) { + 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. + onReply(ok, j); + returned = true; + }; + + // 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) { + dispatch(-1); + } + + // return the actual API call result + rc = call_rc; + } + + return rc; +} + +void AFBClient::set_event_handler(enum EventType et, + std::function func) { + UNUSED(et); + UNUSED(func); + TRACE(); + // XXX todo }