plc_control/API.md

# PLC Control 接口说明

本文档基于当前服务端路由与处理器代码整理，覆盖 HTTP API 和 WebSocket 实时消息。

## 基本信息

- 服务端默认提供静态 UI：`/ui`
- HTTP API 前缀：`/api`
- 公共实时 WebSocket：`/ws/public`
- 客户端专属 WebSocket：`/ws/client/{client_id}`

## 通用错误响应

接口失败时通常返回：

```json
{
  "err_code": 400,
  "err_msg": "Invalid JSON format",
  "err_detail": null
}
```

常见状态码：

- `400 Bad Request`：参数错误
- `403 Forbidden`：写入权限不足或控制条件不满足
- `404 Not Found`：资源不存在
- `500 Internal Server Error`：服务端内部错误

---

## Source

### GET `/api/source`

获取所有已启用数据源及其连接状态。

响应示例：

```json
[
  {
    "id": "uuid",
    "name": "PLC-1",
    "protocol": "opcua",
    "endpoint": "opc.tcp://127.0.0.1:4840",
    "security_policy": null,
    "security_mode": null,
    "enabled": true,
    "created_at": "2026-03-20 10:00:00.000",
    "updated_at": "2026-03-20 10:00:00.000",
    "is_connected": true,
    "last_error": null,
    "last_time": "2026-03-20 10:05:00.000"
  }
]
```

### POST `/api/source`

创建数据源。

请求体：

```json
{
  "name": "PLC-1",
  "endpoint": "opc.tcp://127.0.0.1:4840",
  "enabled": true
}
```

响应：

```json
{ "id": "uuid" }
```

### PUT `/api/source/{source_id}`

更新数据源。请求体字段均可选：

```json
{
  "name": "PLC-1",
  "endpoint": "opc.tcp://127.0.0.1:4840",
  "enabled": true,
  "security_policy": "None",
  "security_mode": "None",
  "username": "user",
  "password": "pass"
}
```

### DELETE `/api/source/{source_id}`

删除数据源。成功响应：`204 No Content`

### POST `/api/source/{source_id}/reconnect`

手动重连指定数据源。

```json
{ "ok_msg": "Source reconnected successfully" }
```

### POST `/api/source/{source_id}/browse`

从 OPC UA 源浏览节点并写入本地 `node` 表。

```json
{ "ok_msg": "Browse completed", "total_nodes": 123 }
```

### GET `/api/source/{source_id}/node-tree`

获取指定数据源的节点树（含 `children` 递归嵌套）。

---

## Point

### GET `/api/point`

分页获取点位列表，同时返回实时监测值。

查询参数：

- `source_id`：可选，按数据源过滤
- `equipment_id`：可选，按设备过滤
- `page`：页码
- `page_size`：每页条数（`-1` 表示全量）

响应示例：

```json
{
  "data": [
    {
      "point": {
        "id": "uuid",
        "node_id": "uuid",
        "name": "Temperature",
        "equipment_id": "uuid",
        "signal_role": "run",
        "created_at": "2026-03-20 10:00:00.000",
        "updated_at": "2026-03-20 10:00:00.000"
      },
      "point_monitor": {
        "point_id": "uuid",
        "timestamp": "2026-03-20 10:05:00.000",
        "quality": "good",
        "value": 12.3,
        "value_type": "float",
        "value_text": "12.3"
      }
    }
  ],
  "total": 1,
  "page": 1,
  "page_size": 100
}
```

### GET `/api/point/{point_id}`

获取单个点位。

### GET `/api/point/{point_id}/history`

获取点位最近历史样本（进程内存环形缓冲，重启后清空）。

查询参数：`limit`（可选，默认 `120`，最大 `1000`）

```json
[
  {
    "timestamp": "2026-03-20 10:05:00.000",
    "quality": "good",
    "value": 12.3,
    "value_text": "12.3",
    "value_number": 12.3
  }
]
```

### PUT `/api/point/{point_id}`

更新点位元数据，字段均可选：

```json
{
  "name": "Temperature",
  "description": "Room temperature",
  "unit": "°C",
  "equipment_id": "uuid",
  "signal_role": "run"
}
```

### DELETE `/api/point/{point_id}`

删除单个点位。

### POST `/api/point/batch`

根据节点批量创建点位。

```json
{ "node_ids": ["uuid1", "uuid2"] }
```

响应：

```json
{
  "success_count": 2,
  "failed_count": 0,
  "failed_node_ids": [],
  "created_point_ids": ["uuid3", "uuid4"]
}
```

### DELETE `/api/point/batch`

批量删除点位。

```json
{ "point_ids": ["uuid1", "uuid2"] }
```

### PUT `/api/point/batch/set-equipment`

批量设置点位的设备绑定和信号角色。

```json
{
  "point_ids": ["uuid1", "uuid2"],
  "equipment_id": "uuid",
  "signal_role": "run"
}
```

### POST `/api/point/value/batch`

批量写点。

请求头：`X-Write-Key: <key>`

```json
{
  "items": [
    { "point_id": "uuid", "value": 12.3 }
  ]
}
```

---

## Equipment

### GET `/api/equipment`

分页获取设备列表，包含每台设备绑定的点位数量。

查询参数：`page`、`page_size`（`-1` 全量）、`keyword`（可选，按 code/name 模糊搜索）

响应示例：

```json
{
  "data": [
    {
      "id": "uuid",
      "unit_id": "uuid",
      "code": "E01",
      "name": "投煤器1",
      "kind": "coal_feeder",
      "description": null,
      "created_at": "2026-03-20 10:00:00.000",
      "updated_at": "2026-03-20 10:00:00.000",
      "point_count": 5
    }
  ],
  "total": 1,
  "page": 1,
  "page_size": 20
}
```

### POST `/api/equipment`

创建设备。

```json
{
  "unit_id": "uuid",
  "code": "E01",
  "name": "投煤器1",
  "kind": "coal_feeder",
  "description": null
}
```

响应：`201 Created`

```json
{ "id": "uuid", "ok_msg": "Equipment created successfully" }
```

### PUT `/api/equipment/{equipment_id}`

更新设备，字段均可选：

```json
{
  "unit_id": "uuid",
  "code": "E01",
  "name": "投煤器1",
  "kind": "coal_feeder",
  "description": null
}
```

### DELETE `/api/equipment/{equipment_id}`

删除设备。成功响应：`204 No Content`

### GET `/api/equipment/{equipment_id}/points`

获取指定设备下所有绑定点位。

### PUT `/api/equipment/batch/set-unit`

批量将设备绑定到控制单元。

```json
{
  "equipment_ids": ["uuid1", "uuid2"],
  "unit_id": "uuid"
}
```

---

## Unit（控制单元）

### GET `/api/unit`

分页获取控制单元列表。

查询参数：`page`、`page_size`、`keyword`（可选）

响应字段包含：`id`、`code`、`name`、`enabled`、`run_time_sec`、`stop_time_sec`、`acc_time_sec`、`bl_time_sec`、`require_manual_ack_after_fault`

### POST `/api/unit`

创建控制单元。

```json
{
  "code": "U01",
  "name": "1号机组",
  "description": null,
  "enabled": true,
  "run_time_sec": 60,
  "stop_time_sec": 30,
  "acc_time_sec": 3600,
  "bl_time_sec": 10,
  "require_manual_ack_after_fault": true
}
```

响应：`201 Created`

```json
{ "id": "uuid", "ok_msg": "Unit created successfully" }
```

### GET `/api/unit/{unit_id}`

获取单个控制单元。

### PUT `/api/unit/{unit_id}`

更新控制单元，字段均可选。

### DELETE `/api/unit/{unit_id}`

删除控制单元。成功响应：`204 No Content`

### GET `/api/unit/{unit_id}/runtime`

获取控制单元的当前运行时状态（内存中，不持久化）。

响应示例：

```json
{
  "unit_id": "uuid",
  "state": "running",
  "auto_enabled": true,
  "accumulated_run_sec": 3600000,
  "current_run_elapsed_sec": 60000,
  "current_stop_elapsed_sec": 0,
  "distributor_run_elapsed_sec": 0,
  "fault_locked": false,
  "flt_active": false,
  "comm_locked": false,
  "manual_ack_required": false,
  "last_tick_at": "2026-03-25 10:00:00.000"
}
```

`state` 枚举值：`stopped` / `running` / `distributor_running` / `fault_locked` / `comm_locked`

注意：时间字段单位为毫秒（ms）。

### GET `/api/unit/{unit_id}/detail`

获取控制单元及其下所有设备和点位的完整嵌套结构。

响应示例：

```json
{
  "id": "uuid",
  "code": "U01",
  "name": "1号机组",
  "enabled": true,
  "equipments": [
    {
      "id": "uuid",
      "code": "E01",
      "name": "投煤器1",
      "kind": "coal_feeder",
      "points": [
        {
          "id": "uuid",
          "name": "启动命令",
          "signal_role": "start_cmd",
          "equipment_id": "uuid"
        }
      ]
    }
  ]
}
```

---

## Event（系统事件）

### GET `/api/event`

分页获取系统控制事件记录。

查询参数：

- `unit_id`：可选，按控制单元过滤
- `event_type`：可选，按事件类型过滤
- `page`、`page_size`

响应示例：

```json
{
  "data": [
    {
      "id": "uuid",
      "event_type": "equipment.start_command_sent",
      "level": "info",
      "unit_id": "uuid",
      "equipment_id": "uuid",
      "message": "Start command sent to equipment ...",
      "payload": {},
      "created_at": "2026-03-25 10:00:00.000"
    }
  ],
  "total": 1,
  "page": 1,
  "page_size": 20
}
```

---

## Control（控制命令）

所有控制命令在执行前会校验：信号质量、REM 状态、FLT 状态、单元通讯锁、单元故障锁。

### POST `/api/control/equipment/{equipment_id}/start`

向设备发送启动脉冲命令（写 HIGH → 延迟 300ms → 写 LOW）。

响应示例：

```json
{
  "ok_msg": "Equipment start command sent",
  "equipment_id": "uuid",
  "unit_id": "uuid",
  "command_role": "start_cmd",
  "command_point_id": "uuid",
  "pulse_ms": 300
}
```

失败（设备未处于可启动状态）返回 `403 Forbidden`。

### POST `/api/control/equipment/{equipment_id}/stop`

向设备发送停止脉冲命令。响应结构同上。

### POST `/api/control/unit/{unit_id}/start-auto`

启动指定控制单元的自动控制循环。单元须已启用（`enabled = true`）。

```json
{ "ok_msg": "Auto control started", "unit_id": "uuid" }
```

### POST `/api/control/unit/{unit_id}/stop-auto`

停止自动控制循环。设备当前状态保持不变，不会自动停机。

```json
{ "ok_msg": "Auto control stopped", "unit_id": "uuid" }
```

### POST `/api/control/unit/{unit_id}/ack-fault`

人工确认故障，解除故障锁定。要求：`fault_locked = true` 且 `flt_active = false`（故障信号已消失）。

```json
{ "ok_msg": "Fault acknowledged", "unit_id": "uuid" }
```

---

## WebSocket

### 连接地址

- 公共广播：`/ws/public`
- 客户端专属：`/ws/client/{client_id}`

### 服务端主动推送消息

#### `PointNewValue`

点位实时值更新：

```json
{
  "type": "PointNewValue",
  "data": {
    "point_id": "uuid",
    "timestamp": "2026-03-20 10:05:00.000",
    "quality": "good",
    "value": 12.3,
    "value_type": "float",
    "value_text": "12.3"
  }
}
```

#### `EventCreated`

系统事件创建（控制操作、故障、状态变更等）：

```json
{
  "type": "EventCreated",
  "data": {
    "id": "uuid",
    "event_type": "equipment.start_command_sent",
    "level": "info",
    "unit_id": "uuid",
    "equipment_id": "uuid",
    "message": "...",
    "created_at": "2026-03-25 10:00:00.000"
  }
}
```

#### `UnitRuntimeChanged`

控制单元运行时状态变更（每 500ms tick 后广播）：

```json
{
  "type": "UnitRuntimeChanged",
  "data": {
    "unit_id": "uuid",
    "state": "running",
    "auto_enabled": true,
    "fault_locked": false,
    "comm_locked": false,
    "manual_ack_required": false,
    "accumulated_run_sec": 3600000
  }
}
```

#### `PointSetValueBatchResult`

批量写点结果回调：

```json
{
  "type": "PointSetValueBatchResult",
  "data": {
    "success": true,
    "err_msg": null,
    "success_count": 1,
    "failed_count": 0,
    "results": []
  }
}
```

### 客户端发送消息

#### 写权限认证

```json
{
  "type": "auth_write",
  "data": { "key": "your-write-key" }
}
```

#### 批量写点

```json
{
  "type": "point_set_value_batch",
  "data": {
    "items": [
      { "point_id": "uuid", "value": 12.3 }
    ]
  }
}
```

---

## 备注

- 运行时状态（`/runtime`）存储在内存中，服务重启后重置。
- 历史曲线数据（`/history`）同样是内存环形缓冲，重启后清空。
- 控制单元时间配置字段（`run_time_sec` 等）单位为秒，运行时 elapsed 字段单位为毫秒。
- 自动控制启动后，状态机以 500ms 为周期运行，实时状态通过 WebSocket `UnitRuntimeChanged` 推送。