1 /* 2 * Copyright (c) 2024 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 16 #ifndef OHOS_DISTRIBUTED_HARDWARE_COMM_TOOL_H 17 #define OHOS_DISTRIBUTED_HARDWARE_COMM_TOOL_H 18 19 #include <cstdint> 20 #include <string> 21 #include <vector> 22 #include <memory> 23 24 #include "dh_transport.h" 25 #include "dh_transport_obj.h" 26 #include "event_handler.h" 27 28 namespace OHOS { 29 namespace DistributedHardware { 30 // request remote dh send back full dh capabilities 31 constexpr int32_t DH_COMM_REQ_FULL_CAPS = 1; 32 // send back full dh attributes to the requester 33 constexpr int32_t DH_COMM_RSP_FULL_CAPS = 2; 34 35 class DHCommTool : public std::enable_shared_from_this<DHCommTool> { 36 public: 37 DHCommTool(); 38 virtual ~DHCommTool() = default; 39 static std::shared_ptr<DHCommTool> GetInstance(); 40 void Init(); 41 void UnInit(); 42 /** 43 * @brief trigger request remote dh send back full capatilities. 44 * payload: {code: DH_COMM_REQ_FULL_CAPS, msg: localNetworkId}. 45 * msg means the device need the dh capatilities, the remote side should use 46 * localNetworkId to send dh capatilities msg back. 47 * 48 * @param remoteNetworkId the target device network id 49 */ 50 void TriggerReqFullDHCaps(const std::string &remoteNetworkId); 51 void GetAndSendLocalFullCaps(const std::string &reqNetworkId); 52 FullCapsRsp ParseAndSaveRemoteDHCaps(const std::string &remoteCaps); 53 54 class DHCommToolEventHandler : public AppExecFwk::EventHandler { 55 public: 56 DHCommToolEventHandler(const std::shared_ptr<AppExecFwk::EventRunner> runner, 57 std::shared_ptr<DHCommTool> dhCommToolPtr); 58 ~DHCommToolEventHandler() override = default; 59 void ProcessEvent(const AppExecFwk::InnerEvent::Pointer &event) override; 60 private: 61 void ProcessFullCapsRsp(const FullCapsRsp &capsRsp, const std::shared_ptr<DHCommTool> dhCommToolPtr); 62 std::weak_ptr<DHCommTool> dhCommToolWPtr_; 63 }; 64 std::shared_ptr<DHCommTool::DHCommToolEventHandler> GetEventHandler(); 65 const std::shared_ptr<DHTransport> GetDHTransportPtr(); 66 67 private: 68 std::shared_ptr<DHTransport> dhTransportPtr_; 69 std::shared_ptr<DHCommTool::DHCommToolEventHandler> eventHandler_; 70 }; 71 } // DistributedHardware 72 } // OHOS 73 #endif