device_manager/utils/include/ipc/standard/ipc_cmd_register.h

/*
 * Copyright (c) 2022 Huawei Device Co., Ltd.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#ifndef OHOS_DM_IPC_CMD_PARSER_H
#define OHOS_DM_IPC_CMD_PARSER_H

#include <cstdint>
#include <memory>
#include <unordered_map>

#include "ipc_req.h"
#include "ipc_rsp.h"
#include "single_instance.h"
namespace OHOS { class MessageParcel; }

namespace OHOS {
namespace DistributedHardware {
#define ON_IPC_SET_REQUEST(cmdCode, paraA, paraB)                                                  \
    static int32_t IpcSetRequest##cmdCode(paraA, paraB);                                           \
    struct IpcRegisterSetRequestFunc##cmdCode {                                                    \
        IpcRegisterSetRequestFunc##cmdCode()                                                       \
        {                                                                                          \
            IpcCmdRegister::GetInstance().RegisterSetRequestFunc(cmdCode, IpcSetRequest##cmdCode); \
        }                                                                                          \
    };                                                                                             \
    IpcRegisterSetRequestFunc##cmdCode g_IpcRegisterSetRequestFunc##cmdCode;                       \
    static int32_t IpcSetRequest##cmdCode(paraA, paraB)

#define ON_IPC_READ_RESPONSE(cmdCode, paraA, paraB)                                                    \
    static int32_t IpcReadResponse##cmdCode(paraA, paraB);                                             \
    struct IpcRegisterReadResponseFunc##cmdCode {                                                      \
        IpcRegisterReadResponseFunc##cmdCode()                                                         \
        {                                                                                              \
            IpcCmdRegister::GetInstance().RegisterReadResponseFunc(cmdCode, IpcReadResponse##cmdCode); \
        }                                                                                              \
    };                                                                                                 \
    IpcRegisterReadResponseFunc##cmdCode g_IpcRegisterReadResponseFunc##cmdCode;                       \
    static int32_t IpcReadResponse##cmdCode(paraA, paraB)

#define ON_IPC_CMD(cmdCode, paraA, paraB)                                                          \
    static int32_t IpcCmdProcess##cmdCode(paraA, paraB);                                           \
    struct IpcRegisterCmdProcessFunc##cmdCode {                                                    \
        IpcRegisterCmdProcessFunc##cmdCode()                                                       \
        {                                                                                          \
            IpcCmdRegister::GetInstance().RegisterCmdProcessFunc(cmdCode, IpcCmdProcess##cmdCode); \
        }                                                                                          \
    };                                                                                             \
    IpcRegisterCmdProcessFunc##cmdCode g_IpcRegisterCmdProcessFunc##cmdCode;                       \
    static int32_t IpcCmdProcess##cmdCode(paraA, paraB)

using SetIpcRequestFunc = int32_t (*)(std::shared_ptr<IpcReq> pBaseReq, MessageParcel &data);
using ReadResponseFunc = int32_t (*)(MessageParcel &reply, std::shared_ptr<IpcRsp> pBaseRsp);
using OnIpcCmdFunc = int32_t (*)(MessageParcel &data, MessageParcel &reply);

class IpcCmdRegister {
    DECLARE_SINGLE_INSTANCE(IpcCmdRegister);

public:
    /**
     * @tc.name: IpcCmdRegister::RegisterSetRequestFunc
     * @tc.desc: RegisterSetRequestFunc of the Ipc Cmd Register
     * @tc.type: FUNC
     */
    void RegisterSetRequestFunc(int32_t cmdCode, SetIpcRequestFunc setIpcRequestFunc)
    {
        setIpcRequestFuncMap_.emplace(cmdCode, setIpcRequestFunc);
    };

    /**
     * @tc.name: IpcCmdRegister::RegisterReadResponseFunc
     * @tc.desc: RegisterReadResponseFunc of the Ipc Cmd Register
     * @tc.type: FUNC
     */
    void RegisterReadResponseFunc(int32_t cmdCode, ReadResponseFunc readResponseFunc)
    {
        readResponseFuncMap_.emplace(cmdCode, readResponseFunc);
    };

    /**
     * @tc.name: IpcCmdRegister::RegisterCmdProcessFunc
     * @tc.desc: RegisterCmdProcessFunc of the Ipc Cmd Register
     * @tc.type: FUNC
     */
    void RegisterCmdProcessFunc(int32_t cmdCode, OnIpcCmdFunc onIpcCmdFunc)
    {
        onIpcCmdFuncMap_.emplace(cmdCode, onIpcCmdFunc);
    };

    /**
     * @tc.name: IpcCmdRegister::RegisterSetRequestFunc
     * @tc.desc: RegisterSetRequestFunc of the Ipc Cmd Register
     * @tc.type: FUNC
     */
    int32_t SetRequest(int32_t cmdCode, std::shared_ptr<IpcReq> pBaseReq, MessageParcel &data);

    /**
     * @tc.name: IpcCmdRegister::ReadResponse
     * @tc.desc: ReadResponse of the Ipc Cmd Register
     * @tc.type: FUNC
     */
    int32_t ReadResponse(int32_t cmdCode, MessageParcel &reply, std::shared_ptr<IpcRsp> pBaseRsp);

    /**
     * @tc.name: IpcCmdRegister::OnIpcCmd
     * @tc.desc: OnIpcCmd of the Ipc Cmd Register
     * @tc.type: FUNC
     */
    int32_t OnIpcCmd(int32_t cmdCode, MessageParcel &data, MessageParcel &reply);

private:
    std::unordered_map<int32_t, SetIpcRequestFunc> setIpcRequestFuncMap_;
    std::unordered_map<int32_t, ReadResponseFunc> readResponseFuncMap_;
    std::unordered_map<int32_t, OnIpcCmdFunc> onIpcCmdFuncMap_;
};
} // namespace DistributedHardware
} // namespace OHOS
#endif // OHOS_DM_IPC_CMD_PARSER_H