1 /* 2 * Copyright (c) 2023 Huawei Device Co., Ltd. 3 * Licensed under the Apache License, Version 2.0 (the "License"); 4 * you may not use this file except in compliance with the License. 5 * You may obtain a copy of the License at 6 * 7 * http://www.apache.org/licenses/LICENSE-2.0 8 * 9 * Unless required by applicable law or agreed to in writing, software 10 * distributed under the License is distributed on an "AS IS" BASIS, 11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 * See the License for the specific language governing permissions and 13 * limitations under the License. 14 */ 15 #ifndef REQUEST_ASYNC_CALL_H 16 #define REQUEST_ASYNC_CALL_H 17 18 #include <functional> 19 #include <memory> 20 #include <new> 21 #include <string> 22 23 #include "constant.h" 24 #include "log.h" 25 #include "napi/native_node_api.h" 26 #include "napi_utils.h" 27 #include "request_common.h" 28 29 namespace OHOS::Request { 30 class AsyncCall final { 31 public: 32 class Context { 33 public: 34 using InputAction = std::function<napi_status(size_t, napi_value *, napi_value)>; 35 using OutputAction = std::function<napi_status(napi_value *)>; 36 using ExecAction = std::function<void()>; 37 Context() = default; ~Context()38 virtual ~Context() 39 { 40 ContextNapiHolder *holder = new (std::nothrow) 41 ContextNapiHolder{ .env = env_, .callbackRef = callbackRef_, .self = self_, .work = work_ }; 42 if (holder == nullptr) { 43 REQUEST_HILOGE("new ContextNapiHolder null"); 44 return; 45 } 46 // Deletes reference of callback in JS main thread. 47 auto afterCallback = [holder]() { 48 napi_handle_scope scope = nullptr; 49 napi_open_handle_scope(holder->env, &scope); 50 if (scope == nullptr) { 51 delete holder; 52 return; 53 } else if (holder->env == nullptr || holder->work == nullptr || holder->self == nullptr) { 54 napi_close_handle_scope(holder->env, scope); 55 delete holder; 56 return; 57 } 58 napi_delete_async_work(holder->env, holder->work); 59 napi_delete_reference(holder->env, holder->self); 60 if (holder->callbackRef != nullptr) { 61 napi_delete_reference(holder->env, holder->callbackRef); 62 } 63 napi_close_handle_scope(holder->env, scope); 64 delete holder; 65 }; 66 int32_t ret = napi_send_event(env_, afterCallback, napi_eprio_high); 67 if (ret != napi_ok) { 68 REQUEST_HILOGE("napi_send_event failed: %{public}d", ret); 69 delete holder; 70 } 71 }; SetInput(InputAction action)72 inline Context &SetInput(InputAction action) 73 { 74 input_ = std::move(action); 75 return *this; 76 } SetOutput(OutputAction action)77 inline Context &SetOutput(OutputAction action) 78 { 79 output_ = std::move(action); 80 return *this; 81 } SetExec(ExecAction action)82 inline Context &SetExec(ExecAction action) 83 { 84 exec_ = std::move(action); 85 return *this; 86 } CreateErr()87 inline napi_value CreateErr() 88 { 89 ExceptionError error; 90 NapiUtils::ConvertError(innerCode_, error); 91 return NapiUtils::CreateBusinessError(env_, error.code, error.errInfo, withErrCode_); 92 } 93 94 InputAction input_ = nullptr; 95 OutputAction output_ = nullptr; 96 ExecAction exec_ = nullptr; 97 98 napi_env env_; 99 napi_ref callbackRef_ = nullptr; 100 napi_ref self_ = nullptr; 101 napi_deferred defer_ = nullptr; 102 napi_async_work work_ = nullptr; 103 104 int32_t innerCode_; 105 bool withErrCode_; 106 Version version_; 107 }; 108 109 AsyncCall(napi_env env, napi_callback_info info, const std::shared_ptr<Context> &context); 110 ~AsyncCall(); 111 napi_value Call(const std::shared_ptr<Context> &context, const std::string &resourceName = "AsyncCall"); 112 SetQosLevel(napi_qos_t napiQosLevel)113 inline void SetQosLevel(napi_qos_t napiQosLevel) 114 { 115 napiQosLevel_ = napiQosLevel; 116 } 117 118 private: 119 enum { ARG_ERROR, ARG_DATA, ARG_BUTT }; 120 121 struct WorkData { 122 std::shared_ptr<Context> ctx = nullptr; ~WorkDataWorkData123 ~WorkData() 124 { 125 ctx = nullptr; 126 } 127 }; 128 129 struct ContextNapiHolder { 130 napi_env env; 131 napi_ref callbackRef; 132 napi_ref self; 133 napi_async_work work; 134 }; 135 static void OnExecute(napi_env env, void *data); 136 static void OnComplete(napi_env env, napi_status status, void *data); 137 napi_qos_t napiQosLevel_ = napi_qos_default; 138 }; 139 } // namespace OHOS::Request 140 #endif // ASYNC_CALL_H 141