241 lines
8.3 KiB
Go
241 lines
8.3 KiB
Go
package device
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import (
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"errors"
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"fmt"
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"strconv"
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"time"
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"git.huangwc.com/pig/pig-farm-controller/internal/app/service/device/proto"
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"git.huangwc.com/pig/pig-farm-controller/internal/infra/logs"
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"git.huangwc.com/pig/pig-farm-controller/internal/infra/models"
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"git.huangwc.com/pig/pig-farm-controller/internal/infra/repository"
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"git.huangwc.com/pig/pig-farm-controller/internal/infra/transport"
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"github.com/google/uuid"
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gproto "google.golang.org/protobuf/proto"
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"google.golang.org/protobuf/types/known/anypb"
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)
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type GeneralDeviceService struct {
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deviceRepo repository.DeviceRepository
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deviceCommandLogRepo repository.DeviceCommandLogRepository
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pendingCollectionRepo repository.PendingCollectionRepository
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logger *logs.Logger
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comm transport.Communicator
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}
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// NewGeneralDeviceService 创建一个通用设备服务
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func NewGeneralDeviceService(
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deviceRepo repository.DeviceRepository,
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deviceCommandLogRepo repository.DeviceCommandLogRepository,
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pendingCollectionRepo repository.PendingCollectionRepository,
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logger *logs.Logger,
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comm transport.Communicator,
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) Service {
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return &GeneralDeviceService{
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deviceRepo: deviceRepo,
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deviceCommandLogRepo: deviceCommandLogRepo,
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pendingCollectionRepo: pendingCollectionRepo,
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logger: logger,
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comm: comm,
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}
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}
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func (g *GeneralDeviceService) Switch(device *models.Device, action DeviceAction) error {
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// 校验设备参数及生成指令
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if *device.ParentID == 0 {
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return fmt.Errorf("设备 %v(id=%v) 的上级区域主控(id=%v) ID不合理, 无法执行指令", device.Name, device.ID, *device.ParentID)
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}
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if !device.SelfCheck() {
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return fmt.Errorf("设备 %v(id=%v) 缺少必要信息, 无法发送指令", device.Name, device.ID)
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}
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deviceInfo := make(map[string]interface{})
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if err := device.ParseProperties(&deviceInfo); err != nil {
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return fmt.Errorf("解析设备 %v(id=%v) 配置失败: %v", device.Name, device.ID, err)
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}
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// TODO 这种校验放自检里
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busNumber, err := strconv.Atoi(fmt.Sprintf("%v", deviceInfo[models.BusNumber]))
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if err != nil {
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return fmt.Errorf("无效的总线号: %v", err)
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}
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busAddress, err := strconv.Atoi(fmt.Sprintf("%v", deviceInfo[models.BusAddress]))
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if err != nil {
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return fmt.Errorf("无效的总线地址: %v", err)
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}
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relayChannel, err := strconv.Atoi(fmt.Sprintf("%v", deviceInfo[models.RelayChannel]))
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if err != nil {
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return fmt.Errorf("无效的继电器通道: %v", err)
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}
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data, err := anypb.New(&proto.Switch{
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DeviceAction: string(action),
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BusNumber: int32(busNumber),
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BusAddress: int32(busAddress),
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RelayChannel: int32(relayChannel),
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})
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if err != nil {
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return fmt.Errorf("创建指令失败: %v", err)
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}
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instruction := &proto.Instruction{
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Method: proto.MethodType_SWITCH,
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Data: data,
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}
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// 获取自身LoRa设备ID, 因为可能变更, 所以每次都现获取
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thisDevice, err := g.deviceRepo.FindByID(*device.ParentID)
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if err != nil {
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return fmt.Errorf("获取区域主控(id=%v)信息失败: %v", *device.ParentID, err)
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}
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if !thisDevice.SelfCheck() {
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return fmt.Errorf("区域主控 %v(id=%v) 缺少必要信息, 无法发送指令", thisDevice.Name, thisDevice.ID)
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}
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thisDeviceinfo := make(map[string]interface{})
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if err := thisDevice.ParseProperties(&thisDeviceinfo); err != nil {
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return fmt.Errorf("解析区域主控 %v(id=%v) 配置失败: %v", device.Name, device.ID, err)
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}
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loraAddress := fmt.Sprintf("%v", thisDeviceinfo[models.LoRaAddress])
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// 生成消息
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message, err := gproto.Marshal(instruction)
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if err != nil {
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return fmt.Errorf("序列化指令失败: %v", err)
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}
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// 发送指令并获取 SendResult
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sendResult, err := g.comm.Send(loraAddress, message)
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if err != nil {
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// 发送失败，直接返回错误
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return fmt.Errorf("发送指令到设备 %s 失败: %w", loraAddress, err)
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}
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// 创建并保存命令日志
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logRecord := &models.DeviceCommandLog{
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MessageID: sendResult.MessageID,
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DeviceID: thisDevice.ID, // thisDevice 是我们查出来的区域主控
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SentAt: time.Now(),
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}
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if err := g.deviceCommandLogRepo.Create(logRecord); err != nil {
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// 记录日志失败是一个需要关注的问题，但可能不应该中断主流程。
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// 我们记录一个错误日志，然后成功返回。
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g.logger.Errorf("创建指令日志失败 (MessageID: %s): %v", sendResult.MessageID, err)
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}
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g.logger.Infof("成功发送指令到设备 %s 并创建日志 (MessageID: %s)", loraAddress, sendResult.MessageID)
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return nil
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}
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// Collect 实现了 Service 接口，用于发起对指定区域主控下的多个设备的批量采集请求。
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// 它负责查找区域主控、生成关联ID、创建待处理记录、构建指令并最终发送。
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func (g *GeneralDeviceService) Collect(regionalControllerID uint, devicesToCollect []*models.Device) error {
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if regionalControllerID == 0 {
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return errors.New("区域主控ID不能为空")
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}
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if len(devicesToCollect) == 0 {
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// 如果没有要采集的设备，这不是一个错误，只是一个空操作。
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g.logger.Info("待采集设备列表为空，无需执行采集任务。")
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return nil
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}
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// 1. 查找并自检区域主控设备
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regionalController, err := g.deviceRepo.FindByID(regionalControllerID)
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if err != nil {
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return fmt.Errorf("查找区域主控 (ID: %d) 失败: %w", regionalControllerID, err)
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}
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if !regionalController.SelfCheck() {
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return fmt.Errorf("区域主控 (ID: %d) 未通过自检，缺少必要属性", regionalControllerID)
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}
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// 2. 准备采集任务列表和数据库存根，并验证设备
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var childDeviceIDs []uint
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var collectTasks []*proto.CollectTask
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for _, dev := range devicesToCollect {
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// 验证设备是否属于指定的区域主控
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if dev.ParentID == nil || *dev.ParentID != regionalControllerID {
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return fmt.Errorf("设备 '%s' (ID: %d) 不属于指定的区域主控 (ID: %d)", dev.Name, dev.ID, regionalControllerID)
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}
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// 对每个待采集的设备执行自检
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if !dev.SelfCheck() {
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g.logger.Warnf("跳过设备 %d，因其未通过自检", dev.ID)
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continue
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}
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// 自检已通过，我们可以安全地解析属性
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var props map[string]interface{}
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// 此时 ParseProperties 不应失败
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_ = dev.ParseProperties(&props)
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busNumber := props[models.BusNumber].(float64)
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busAddress := props[models.BusAddress].(float64)
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collectTasks = append(collectTasks, &proto.CollectTask{
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DeviceAction: dev.Command,
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BusNumber: int32(busNumber),
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BusAddress: int32(busAddress),
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})
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childDeviceIDs = append(childDeviceIDs, dev.ID)
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}
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if len(childDeviceIDs) == 0 {
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return errors.New("经过滤后，没有可通过自检的有效设备")
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}
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// 3. 从区域主控的属性中解析出 DevEui (loraAddress)
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var rcProps map[string]interface{}
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// SelfCheck 已保证属性可解析
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_ = regionalController.ParseProperties(&rcProps)
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loraAddress := rcProps[models.LoRaAddress].(string)
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// 4. 创建待处理请求记录
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correlationID := uuid.New().String()
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pendingReq := &models.PendingCollection{
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CorrelationID: correlationID,
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DeviceID: regionalController.ID,
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CommandMetadata: childDeviceIDs,
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Status: models.PendingStatusPending,
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CreatedAt: time.Now(),
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}
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if err := g.pendingCollectionRepo.Create(pendingReq); err != nil {
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g.logger.Errorf("创建待采集请求失败 (CorrelationID: %s): %v", correlationID, err)
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return err
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}
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g.logger.Infof("成功创建待采集请求 (CorrelationID: %s, DeviceID: %d)", correlationID, regionalController.ID)
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// 5. 构建最终的空中载荷
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batchCmd := &proto.BatchCollectCommand{
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CorrelationId: correlationID,
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Tasks: collectTasks,
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}
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anyData, err := anypb.New(batchCmd)
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if err != nil {
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g.logger.Errorf("创建 Any Protobuf 失败 (CorrelationID: %s): %v", correlationID, err)
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return err
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}
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instruction := &proto.Instruction{
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Method: proto.MethodType_COLLECT,
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Data: anyData,
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}
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payload, err := gproto.Marshal(instruction)
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if err != nil {
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g.logger.Errorf("序列化采集指令失败 (CorrelationID: %s): %v", correlationID, err)
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return err
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}
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// 6. 发送指令
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if _, err := g.comm.Send(loraAddress, payload); err != nil {
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g.logger.DPanicf("待采集请求 (CorrelationID: %s) 已创建，但发送到设备失败: %v。数据可能不一致！", correlationID, err)
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return err
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}
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g.logger.Infof("成功将采集请求 (CorrelationID: %s) 发送到设备 %s", correlationID, loraAddress)
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return nil
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}
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