73 lines
2.3 KiB
Markdown
73 lines
2.3 KiB
Markdown
# 动态通道与转发配置方案
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> **日期**: 2026-06-30 | **目标**: 用 std::vector 替代硬编码枚举，XML 驱动动态增删通道和转发规则
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---
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## 1. 现状问题
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- `enum_comm` 硬编码通道数量和顺序 (ENUM_COMM_TCP_S_0/UART_0/TCP_S_1)
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- `g_channel_para[ENUM_COMM_MAX]` 固定数组，增删都改代码
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- `com_channel_get_send_info()` 用 if/else 写死转发关系
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- `com_channel_interface_get(ENUM_COMM_*)` 依赖枚举值
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## 2. 新设计
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### 2.1 通道管理
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```cpp
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// key = "mode:idx", 如 "tcp_server:0", "uart:0"
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struct stru_channel_para {
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std::string key; // 唯一标识
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std::string desc;
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CommType type;
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void *p_para; // TCP → g_tcp_para[i], UART → g_uart_para[i]
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int id; // comm_create 返回的通道id
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int socket_fd;
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pthread_t thread_id;
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};
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std::vector<stru_channel_para> g_channels; // 动态增长
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// TCP/串口参数也改为 vector
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std::vector<stru_tcp_para> g_tcp_params;
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std::vector<stru_uart_para> g_uart_params;
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```
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### 2.2 转发规则
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```cpp
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struct stru_forward_rule {
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std::string from_key; // "tcp_server:0"
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std::string to_key; // "uart:0"
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};
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std::vector<stru_forward_rule> g_forward_rules;
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```
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### 2.3 XML 新增 Forward 段
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```xml
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<Root>
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<Channel mode="tcp_server" idx="0" desc="..." local_ip="..." local_port="..."/>
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<Channel mode="uart" idx="0" desc="..." device="..." .../>
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<Forward from_mode="tcp_server" from_idx="0" to_mode="uart" to_idx="0"/>
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</Root>
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```
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### 2.4 API 变更
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| 旧 | 新 | 说明 |
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|----|-----|------|
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| `com_channel_interface_get(ENUM_COMM_*)` | `com_channel_interface_get_by_key("uart:0")` | 用 key 查找 |
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| `com_channel_get_send_info(src_id, ...)` | `com_channel_forward(src_key, ...)` | 查转发规则 |
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| `g_channel_para` 固定数组 | `g_channels` vector | 动态 |
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### 2.5 修改文件列表
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| 文件 | 改动 |
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|------|------|
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| `com_channel_def.h` | 删除 enum，定义 stru_channel_para / stru_forward_rule |
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| `decode_channel_mgr.cpp` | vector 替代数组，XML 解析循环，转发规则解析 |
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| `decode_data_router.cpp` | `ENUM_COMM_UART_0` → `com_channel_interface_get_by_key("uart:0")` |
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| `self_ptl.cpp` | dc signal key 改为 `sys.ch.uart_0_if` / `sys.ch.tcp_server_0_if` |
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| `channel_config*.xml` | 新增 `Forward` 段 |
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