diff options
Diffstat (limited to 'binding/src/verbs.cpp')
| -rw-r--r-- | binding/src/verbs.cpp | 172 |
1 files changed, 0 insertions, 172 deletions
diff --git a/binding/src/verbs.cpp b/binding/src/verbs.cpp deleted file mode 100644 index f71698a..0000000 --- a/binding/src/verbs.cpp +++ /dev/null @@ -1,172 +0,0 @@ -#ifndef _GNU_SOURCE -#define _GNU_SOURCE -#endif - -#include "binding-api.h" - -#include <map> -#include <mutex> -#include <string> -#include <stdexcept> - -extern "C" { -// json-c/json.h -#include <json.h> -} - -static std::mutex mut; -static int32_t gRequestId = 0; -static std::map<decltype(gRequestId), json_object *> gRequests; - -static inline bool pushRequest(json_object *reqJson) { - // Guard `gRequests' and `gRequestId' - std::lock_guard<std::mutex> lock(mut); - - gRequestId++; - - json_object *reqToSvc = json_object_new_object(); - json_object_object_add(reqToSvc, POIAPI_BINDING_PARAMETER_KEY_REQUEST_ID, json_object_new_string(std::to_string(gRequestId).c_str())); - - // reqJson(1), reqToSvc(1) - // Associate `reqJson' to `reqToSvc' but the refcount of `reqJson' is not incremented - json_object_object_add(reqToSvc, POIAPI_BINDING_PARAMETER_KEY_REQUEST_OBJECT, reqJson); - - // reqJson(1->2->1), reqToSvc(1->2->1) - // Each refcount of `reqJson' or `reqToSvc' is decrement, and we increment the refcounts before the decrementations - int rc = afb_event_push(gEventRequestReceived, json_object_get(reqToSvc)); - if (rc == -1 || rc == 0) { // Discard the request if the event was not pushed or there are no subscriber - // reqJson(1->2), reqToSvc(1->1) - json_object_get(reqJson); - // reqJson(2->1), reqToSvc(1->0) - // Delete reqToSvc - json_object_put(reqToSvc); - return false; - } - - // reqJson(1->2), reqToSvc(1) - // Increment the refcount of `refJson' to preserve `reqToSvc'. - // The refcount of reqJson will be decremented in afb_req_success - json_object_get(reqJson); - gRequests.emplace(gRequestId, reqToSvc); - - return true; -} - -// Verb: request-processed -void send_request(afb_req_t req) -{ - json_object *reqJson = afb_req_json(req); - if (!pushRequest(reqJson)) { - AFB_REQ_ERROR(req, "Failed to push an event"); - // reqJson(1->0) - afb_req_fail(req, "error", "Failed to push an event"); - return; - } - - json_object *response = json_object_new_object(); - json_object_object_add(response, POIAPI_BINDING_PARAMETER_KEY_REQUEST_ID, json_object_new_string(std::to_string(gRequestId).c_str())); - - // `response' will be released - // The refcount of `reqJson' will be 1; `reqJson' belonges to a element of `gRequests' - afb_req_success(req, response, POIAPI_BINDING_VERB_SEND_REQUEST); -} - -// Verb: request-processed -void request_processed(afb_req_t req) -{ - json_object *resultJson = afb_req_json(req); - json_object *ridj; - json_object_object_get_ex(resultJson, POIAPI_BINDING_PARAMETER_KEY_REQUEST_ID, &ridj); - if (!json_object_is_type(ridj, json_type_string)) { - AFB_REQ_ERROR(req, "Received response was bad formatted: %s", json_object_to_json_string_ext(afb_req_json(req), JSON_C_TO_STRING_PRETTY)); - afb_req_fail(req, "error", "Received response was badly formatted"); - return; - } - - const char *rids = json_object_get_string(ridj); - uint32_t rid; - try { - rid = std::stoi(rids); - } - catch (const std::invalid_argument &e) { - AFB_REQ_ERROR(req, "Received response was bad formatted: %s", json_object_to_json_string_ext(afb_req_json(req), JSON_C_TO_STRING_PRETTY)); - afb_req_fail(req, "error", "Received response was badly formatted"); - return; - } - catch (const std::out_of_range &e) { - AFB_REQ_ERROR(req, "Received response was bad formatted: %s", json_object_to_json_string_ext(afb_req_json(req), JSON_C_TO_STRING_PRETTY)); - afb_req_fail(req, "error", "Received response was badly formatted"); - return; - } - - decltype(gRequests)::iterator it = gRequests.find(rid); - if (it == gRequests.end()) { - AFB_REQ_ERROR(req, "Received an invalid request id: %d", rid); - afb_req_fail_f(req, "error", "Received an invalid request id: %d %s", rid, rids); - return; - } - - // Preserve `resultJson' because afb_req_success use it - if (afb_event_push(gEventResponseReceived, json_object_get(resultJson)) == -1) { - AFB_REQ_ERROR(req, "Failed to push an event"); - afb_req_fail(req, "error", "Failed to push an event"); - return; - } - - afb_req_success(req, nullptr, nullptr); - - // Guard `gRequests' - std::lock_guard<std::mutex> lock(mut); - - // Delete the processed request data - json_object *processedReq = it->second; - gRequests.erase(it); - int rc = json_object_put(processedReq); - if (rc != 1) { - AFB_REQ_ERROR(req, "bad-ref-count %d:%s", rc, POIAPI_BINDING_VERB_REQUEST_PROCESSED); - } -} - -// Verb: subscribe-requests -void subscribe_requests(afb_req_t req) -{ - if (afb_req_subscribe(req, gEventRequestReceived) == 0) { - afb_req_success(req, nullptr, nullptr); - } else { - AFB_REQ_ERROR(req, "Failed to %s", POIAPI_BINDING_VERB_SUBSCRIBE_REQUESTS); - afb_req_fail_f(req, "error", "Failed to %s", POIAPI_BINDING_VERB_SUBSCRIBE_REQUESTS); - } -} - -// Verb: unsubscribe-requests -void unsubscribe_requests(afb_req_t req) -{ - if (afb_req_unsubscribe(req, gEventRequestReceived) == 0) { - afb_req_success(req, nullptr, nullptr); - } else { - AFB_REQ_ERROR(req, "Failed to %s", POIAPI_BINDING_VERB_UNSUBSCRIBE_REQUESTS); - afb_req_fail_f(req, "error", "Failed to %s", POIAPI_BINDING_VERB_UNSUBSCRIBE_REQUESTS); - } -} - -// Verb: subscribe-responses -void subscribe_responses(afb_req_t req) -{ - if (afb_req_subscribe(req, gEventResponseReceived) == 0) { - afb_req_success(req, nullptr, nullptr); - } else { - AFB_REQ_ERROR(req, "Failed to %s", POIAPI_BINDING_VERB_SUBSCRIBE_RESPONSES); - afb_req_fail_f(req, "error", "Failed to %s", POIAPI_BINDING_VERB_SUBSCRIBE_RESPONSES); - } -} - -// Verb: unsubscribe-responses -void unsubscribe_responses(afb_req_t req) -{ - if (afb_req_unsubscribe(req, gEventResponseReceived) == 0) { - afb_req_success(req, nullptr, nullptr); - } else { - AFB_REQ_ERROR(req, "Failed to %s", POIAPI_BINDING_VERB_UNSUBSCRIBE_RESPONSES); - afb_req_fail_f(req, "error", "Failed to %s", POIAPI_BINDING_VERB_UNSUBSCRIBE_RESPONSES); - } -} |