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pig-farm-controller/internal/app/webhook/chirp_stack.go

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package webhook
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import (
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"context"
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"encoding/base64"
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"encoding/json"
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"io"
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"math"
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"net/http"
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"time"
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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"
"git.huangwc.com/pig/pig-farm-controller/internal/infra/repository"
"git.huangwc.com/pig/pig-farm-controller/internal/infra/transport/proto"
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gproto "google.golang.org/protobuf/proto"
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"gorm.io/datatypes"
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)
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// ChirpStackListener 主动发送的请求的event字段, 这个字段代表事件类型
const (
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eventTypeUp = "up" // 上行数据事件:当接收到设备发送的数据时触发,这是最核心的事件。
eventTypeStatus = "status" // 设备状态事件:当设备报告其状态时触发(例如电池电量、信号强度)。
eventTypeJoin = "join" // 入网事件:当设备成功加入网络时触发。
eventTypeAck = "ack" // 下行确认事件:当设备确认收到下行消息时触发。
eventTypeTxAck = "txack" // 网关发送确认事件:当网关确认已发送下行消息时触发(不代表设备已收到)。
eventTypeLog = "log" // 日志事件:当设备或 ChirpStack 产生日志信息时触发。
eventTypeLocation = "location" // 位置事件:当设备的位置被解析或更新时触发。
eventTypeIntegration = "integration" // 集成事件:当其他集成(如第三方服务)处理数据后触发。
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)
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// ChirpStackListener 是一个监听器, 用于监听ChirpStack反馈的设备上行事件
type ChirpStackListener struct {
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ctx context.Context
sensorDataRepo repository.SensorDataRepository
deviceRepo repository.DeviceRepository
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areaControllerRepo repository.AreaControllerRepository
deviceCommandLogRepo repository.DeviceCommandLogRepository
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pendingCollectionRepo repository.PendingCollectionRepository
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}
// NewChirpStackListener 创建一个新的 ChirpStackListener 实例
func NewChirpStackListener(
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ctx context.Context,
sensorDataRepo repository.SensorDataRepository,
deviceRepo repository.DeviceRepository,
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areaControllerRepo repository.AreaControllerRepository,
deviceCommandLogRepo repository.DeviceCommandLogRepository,
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pendingCollectionRepo repository.PendingCollectionRepository,
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) ListenHandler {
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return &ChirpStackListener{
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ctx: ctx,
sensorDataRepo: sensorDataRepo,
deviceRepo: deviceRepo,
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areaControllerRepo: areaControllerRepo,
deviceCommandLogRepo: deviceCommandLogRepo,
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pendingCollectionRepo: pendingCollectionRepo,
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}
}
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// Handler 监听ChirpStack反馈的事件, 因为这是个Webhook, 所以直接回复掉再慢慢处理信息
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func (c *ChirpStackListener) Handler() http.HandlerFunc {
return func(w http.ResponseWriter, r *http.Request) {
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ctx, logger := logs.Trace(r.Context(), c.ctx, "ChirpStackListener")
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defer r.Body.Close()
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b, err := io.ReadAll(r.Body)
if err != nil {
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logger.Errorf("读取请求体失败: %v", err)
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http.Error(w, "failed to read body", http.StatusBadRequest)
return
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}
event := r.URL.Query().Get("event")
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w.WriteHeader(http.StatusOK)
// 将异步处理逻辑委托给 handler 方法
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go c.handler(ctx, b, event)
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}
}
// handler 用于处理 ChirpStack 发送的事件
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func (c *ChirpStackListener) handler(ctx context.Context, data []byte, eventType string) {
reqCtx, logger := logs.Trace(ctx, c.ctx, "ChirpStackListener.handler")
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switch eventType {
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case eventTypeUp:
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var msg UpEvent
if err := json.Unmarshal(data, &msg); err != nil {
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logger.Errorf("解析 'up' 事件失败: %v, data: %s", err, string(data))
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return
}
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c.handleUpEvent(reqCtx, &msg)
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case eventTypeJoin:
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var msg JoinEvent
if err := json.Unmarshal(data, &msg); err != nil {
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logger.Errorf("解析 'join' 事件失败: %v, data: %s", err, string(data))
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return
}
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c.handleJoinEvent(reqCtx, &msg)
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case eventTypeAck:
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var msg AckEvent
if err := json.Unmarshal(data, &msg); err != nil {
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logger.Errorf("解析 'ack' 事件失败: %v, data: %s", err, string(data))
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return
}
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c.handleAckEvent(reqCtx, &msg)
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case eventTypeTxAck:
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var msg TxAckEvent
if err := json.Unmarshal(data, &msg); err != nil {
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logger.Errorf("解析 'txack' 事件失败: %v, data: %s", err, string(data))
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return
}
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c.handleTxAckEvent(reqCtx, &msg)
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case eventTypeStatus:
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var msg StatusEvent
if err := json.Unmarshal(data, &msg); err != nil {
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logger.Errorf("解析 'status' 事件失败: %v, data: %s", err, string(data))
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return
}
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c.handleStatusEvent(reqCtx, &msg)
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case eventTypeLog:
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var msg LogEvent
if err := json.Unmarshal(data, &msg); err != nil {
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logger.Errorf("解析 'log' 事件失败: %v, data: %s", err, string(data))
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return
}
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c.handleLogEvent(reqCtx, &msg)
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case eventTypeLocation:
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var msg LocationEvent
if err := json.Unmarshal(data, &msg); err != nil {
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logger.Errorf("解析 'location' 事件失败: %v, data: %s", err, string(data))
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return
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}
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c.handleLocationEvent(reqCtx, &msg)
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case eventTypeIntegration:
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var msg IntegrationEvent
if err := json.Unmarshal(data, &msg); err != nil {
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logger.Errorf("解析 'integration' 事件失败: %v, data: %s", err, string(data))
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return
}
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c.handleIntegrationEvent(reqCtx, &msg)
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default:
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logger.Errorf("未知的ChirpStack事件: %s, data: %s", eventType, string(data))
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}
}
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// --- 业务处理函数 ---
// handleUpEvent 处理上行数据事件
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func (c *ChirpStackListener) handleUpEvent(ctx context.Context, event *UpEvent) {
reqCtx, logger := logs.Trace(ctx, c.ctx, "ChirpStackListener.handleUpEvent")
logger.Infof("开始处理 'up' 事件, DevEui: %s", event.DeviceInfo.DevEui)
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// 1. 查找区域主控设备
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areaController, err := c.areaControllerRepo.FindByNetworkID(reqCtx, event.DeviceInfo.DevEui)
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if err != nil {
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logger.Errorf("处理 'up' 事件失败:无法通过 DevEui '%s' 找到区域主控设备: %v", event.DeviceInfo.DevEui, err)
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return
}
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// 依赖 SelfCheck 确保区域主控有效
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if err := areaController.SelfCheck(); err != nil {
logger.Errorf("处理 'up' 事件失败:区域主控 %v(ID: %d) 未通过自检: %v", areaController.Name, areaController.ID, err)
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return
}
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logger.Infof("找到区域主控: %s (ID: %d)", areaController.Name, areaController.ID)
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// 2. 记录区域主控的信号强度 (如果存在)
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if len(event.RxInfo) > 0 {
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// 根据业务逻辑,一个猪场只有一个网关,所以 RxInfo 中通常只有一个元素,或者 gateway_id 都是相同的。
// 因此,我们只取第一个 RxInfo 中的信号数据即可。
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rx := event.RxInfo[0] // 取第一个接收到的网关信息
// 构建 SignalMetrics 结构体
signalMetrics := models.SignalMetrics{
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RssiDbm: rx.Rssi,
SnrDb: rx.Snr,
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}
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// 记录信号强度
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c.recordSensorData(reqCtx, areaController.ID, areaController.ID, event.Time, models.SensorTypeSignalMetrics, signalMetrics)
logger.Infof("已记录区域主控 (ID: %d) 的信号强度: RSSI=%d, SNR=%.2f", areaController.ID, rx.Rssi, rx.Snr)
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} else {
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logger.Warnf("处理 'up' 事件时未找到 RxInfo无法记录信号数据。DevEui: %s", event.DeviceInfo.DevEui)
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}
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// 3. 处理上报的传感器数据
if event.Data == "" {
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logger.Warnf("处理 'up' 事件时 Data 字段为空无需记录上行数据。DevEui: %s", event.DeviceInfo.DevEui)
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return
}
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// 3.1 Base64 解码
decodedData, err := base64.StdEncoding.DecodeString(event.Data)
if err != nil {
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logger.Errorf("Base64 解码 'up' 事件的 Data 失败: %v, Data: %s", err, event.Data)
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return
}
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// 3.2 解析外层 "信封"
var instruction proto.Instruction
if err := gproto.Unmarshal(decodedData, &instruction); err != nil {
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logger.Errorf("解析上行 Instruction Protobuf 失败: %v, Decoded Data: %x", err, decodedData)
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return
}
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// 3.3 使用 type switch 从 oneof payload 中提取 CollectResult
var collectResp *proto.CollectResult
switch p := instruction.GetPayload().(type) {
case *proto.Instruction_CollectResult:
collectResp = p.CollectResult
default:
// 如果上行的数据不是采集结果,记录日志并忽略
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logger.Infof("收到一个非采集响应的上行指令 (Type: %T),无需处理。", p)
return
}
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// 检查 collectResp 是否为 nil虽然在 type switch 成功的情况下不太可能
if collectResp == nil {
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logger.Errorf("从 Instruction 中提取的 CollectResult 为 nil")
return
}
correlationID := collectResp.CorrelationId
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logger.Infof("成功解析采集响应 (CorrelationID: %s),包含 %d 个值。", correlationID, len(collectResp.Values))
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// 4. 根据 CorrelationID 查找待处理请求
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pendingReq, err := c.pendingCollectionRepo.FindByCorrelationID(reqCtx, correlationID)
if err != nil {
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logger.Errorf("处理采集响应失败:无法找到待处理请求 (CorrelationID: %s): %v", correlationID, err)
return
}
// 检查状态,防止重复处理
if pendingReq.Status != models.PendingStatusPending && pendingReq.Status != models.PendingStatusTimedOut {
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logger.Warnf("收到一个已处理过的采集响应 (CorrelationID: %s, Status: %s),将忽略。", correlationID, pendingReq.Status)
return
}
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// 5. 匹配数据并存入数据库
deviceIDs := pendingReq.CommandMetadata
values := collectResp.Values
if len(deviceIDs) != len(values) {
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logger.Errorf("数据不匹配:下行指令要求采集 %d 个设备,但上行响应包含 %d 个值 (CorrelationID: %s)", len(deviceIDs), len(values), correlationID)
// 即使数量不匹配,也更新状态为完成,以防止请求永远 pending
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err = c.pendingCollectionRepo.UpdateStatusToFulfilled(reqCtx, correlationID, event.Time)
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if err != nil {
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logger.Errorf("处理采集响应失败:无法更新待处理请求 (CorrelationID: %s) 的状态为完成: %v", correlationID, err)
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}
return
}
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for i, deviceID := range deviceIDs {
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rawSensorValue := values[i] // 这是设备上报的原始值
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// 检查设备上报的值是否为 NaN (Not a Number),如果是则跳过
if math.IsNaN(float64(rawSensorValue)) {
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logger.Warnf("设备 (ID: %d) 上报了一个无效的 NaN 值,已跳过当前值的记录。", deviceID)
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continue
}
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// 5.1 获取设备及其模板
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dev, err := c.deviceRepo.FindByID(reqCtx, deviceID)
if err != nil {
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logger.Errorf("处理采集数据失败:无法找到设备 (ID: %d): %v", deviceID, err)
continue
}
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// 依赖 SelfCheck 确保设备和模板有效
if err := dev.SelfCheck(); err != nil {
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logger.Warnf("跳过设备 %d因其未通过自检: %v", dev.ID, err)
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continue
}
if err := dev.DeviceTemplate.SelfCheck(); err != nil {
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logger.Warnf("跳过设备 %d因其设备模板未通过自检: %v", dev.ID, err)
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continue
}
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// 5.2 从设备模板中解析 ValueDescriptor
var valueDescriptors []*models.ValueDescriptor
if err := dev.DeviceTemplate.ParseValues(&valueDescriptors); err != nil {
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logger.Warnf("跳过设备 %d因其设备模板的 Values 属性解析失败: %v", dev.ID, err)
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continue
}
// 根据 DeviceTemplate.SelfCheck这里应该只有一个 ValueDescriptor
if len(valueDescriptors) == 0 {
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logger.Warnf("跳过设备 %d因其设备模板缺少 ValueDescriptor 定义", dev.ID)
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continue
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}
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valueDescriptor := valueDescriptors[0]
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// 5.3 应用乘数和偏移量计算最终值
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parsedValue := rawSensorValue*valueDescriptor.Multiplier + valueDescriptor.Offset
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// 5.4 根据传感器类型构建具体的数据结构
var dataToRecord interface{}
switch valueDescriptor.Type {
case models.SensorTypeTemperature:
dataToRecord = models.TemperatureData{TemperatureCelsius: parsedValue}
case models.SensorTypeHumidity:
dataToRecord = models.HumidityData{HumidityPercent: parsedValue}
case models.SensorTypeWeight:
dataToRecord = models.WeightData{WeightKilograms: parsedValue}
default:
// TODO 未知传感器的数据需要记录吗
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logger.Warnf("未知的传感器类型 '%s',将使用通用格式记录", valueDescriptor.Type)
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dataToRecord = map[string]float32{"value": parsedValue}
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}
// 5.5 记录传感器数据
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c.recordSensorData(reqCtx, areaController.ID, dev.ID, event.Time, valueDescriptor.Type, dataToRecord)
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logger.Infof("成功记录传感器数据: 设备ID=%d, 类型=%s, 原始值=%f, 解析值=%.2f", dev.ID, valueDescriptor.Type, rawSensorValue, parsedValue)
}
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// 6. 更新请求状态为“已完成”
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if err := c.pendingCollectionRepo.UpdateStatusToFulfilled(reqCtx, correlationID, event.Time); err != nil {
logger.Errorf("更新待采集请求状态为 'fulfilled' 失败 (CorrelationID: %s): %v", correlationID, err)
} else {
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logger.Infof("成功完成并关闭采集请求 (CorrelationID: %s)", correlationID)
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}
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}
// handleStatusEvent 处理设备状态事件
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func (c *ChirpStackListener) handleStatusEvent(ctx context.Context, event *StatusEvent) {
reqCtx, logger := logs.Trace(ctx, c.ctx, "handleStatusEvent")
logger.Infof("处接收到理 'status' 事件: %+v", event)
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// 查找区域主控设备
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areaController, err := c.areaControllerRepo.FindByNetworkID(reqCtx, event.DeviceInfo.DevEui)
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if err != nil {
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logger.Errorf("处理 'status' 事件失败:无法通过 DevEui '%s' 找到区域主控设备: %v", event.DeviceInfo.DevEui, err)
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return
}
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// 记录信号强度
signalMetrics := models.SignalMetrics{
MarginDb: event.Margin,
}
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c.recordSensorData(reqCtx, areaController.ID, areaController.ID, event.Time, models.SensorTypeSignalMetrics, signalMetrics)
logger.Infof("已记录区域主控 (ID: %d) 的信号状态: %+v", areaController.ID, signalMetrics)
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// 记录电量
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batteryLevel := models.BatteryLevel{
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BatteryLevelRatio: event.BatteryLevel,
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BatteryLevelUnavailable: event.BatteryLevelUnavailable,
ExternalPower: event.ExternalPower,
}
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c.recordSensorData(reqCtx, areaController.ID, areaController.ID, event.Time, models.SensorTypeBatteryLevel, batteryLevel)
logger.Infof("已记录区域主控 (ID: %d) 的电池状态: %+v", areaController.ID, batteryLevel)
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}
// handleAckEvent 处理下行确认事件
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func (c *ChirpStackListener) handleAckEvent(ctx context.Context, event *AckEvent) {
reqCtx, logger := logs.Trace(ctx, c.ctx, "handleAckEvent")
logger.Infof("接收到 'ack' 事件: %+v", event)
// 更新下行任务记录的确认时间及接收成功状态
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err := c.deviceCommandLogRepo.UpdateAcknowledgedAt(reqCtx, event.DeduplicationID, event.Time, event.Acknowledged)
if err != nil {
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logger.Errorf("更新下行任务记录的确认时间及接收成功状态失败 (MessageID: %s, DevEui: %s, Acknowledged: %t): %v",
event.DeduplicationID, event.DeviceInfo.DevEui, event.Acknowledged, err)
return
}
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logger.Infof("成功更新下行任务记录确认时间及接收成功状态 (MessageID: %s, DevEui: %s, Acknowledged: %t, AcknowledgedAt: %s)",
event.DeduplicationID, event.DeviceInfo.DevEui, event.Acknowledged, event.Time.Format(time.RFC3339))
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}
// handleLogEvent 处理日志事件
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func (c *ChirpStackListener) handleLogEvent(ctx context.Context, event *LogEvent) {
logger := logs.TraceLogger(ctx, c.ctx, "handleLogEvent")
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// 首先,打印完整的事件结构体,用于详细排查
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logger.Infof("接收到 'log' 事件的完整内容: %+v", event)
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// 接着,根据 ChirpStack 日志的级别,使用我们自己的 logger 对应级别来打印核心信息
logMessage := "ChirpStack 日志: [%s] %s (DevEui: %s)"
switch event.Level {
case "INFO":
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logger.Infof(logMessage, event.Code, event.Description, event.DeviceInfo.DevEui)
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case "WARNING":
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logger.Warnf(logMessage, event.Code, event.Description, event.DeviceInfo.DevEui)
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case "ERROR":
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logger.Errorf(logMessage, event.Code, event.Description, event.DeviceInfo.DevEui)
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default:
// 对于未知级别,使用 Warn 级别打印,并明确指出级别未知
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logger.Warnf("ChirpStack 日志: [未知级别: %s] %s %s (DevEui: %s)",
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event.Level, event.Code, event.Description, event.DeviceInfo.DevEui)
}
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}
// handleJoinEvent 处理入网事件
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func (c *ChirpStackListener) handleJoinEvent(ctx context.Context, event *JoinEvent) {
logger := logs.TraceLogger(ctx, c.ctx, "handleJoinEvent")
logger.Infof("接收到 'join' 事件: %+v", event)
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// 在这里添加您的业务逻辑
}
// handleTxAckEvent 处理网关发送确认事件
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func (c *ChirpStackListener) handleTxAckEvent(ctx context.Context, event *TxAckEvent) {
logger := logs.TraceLogger(ctx, c.ctx, "handleTxAckEvent")
logger.Infof("接收到 'txack' 事件: %+v", event)
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// 在这里添加您的业务逻辑
}
// handleLocationEvent 处理位置事件
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func (c *ChirpStackListener) handleLocationEvent(ctx context.Context, event *LocationEvent) {
logger := logs.TraceLogger(ctx, c.ctx, "handleLocationEvent")
logger.Infof("接收到 'location' 事件: %+v", event)
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// 在这里添加您的业务逻辑
}
// handleIntegrationEvent 处理集成事件
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func (c *ChirpStackListener) handleIntegrationEvent(ctx context.Context, event *IntegrationEvent) {
logger := logs.TraceLogger(ctx, c.ctx, "handleIntegrationEvent")
logger.Infof("接收到 'integration' 事件: %+v", event)
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// 在这里添加您的业务逻辑
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}
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// recordSensorData 是一个通用方法,用于将传感器数据存入数据库。
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// areaControllerID: 区域主控设备的ID
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// sensorDeviceID: 实际产生传感器数据的普通设备的ID
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// sensorType: 传感器值的类型 (例如 models.SensorTypeTemperature)
// data: 具体的传感器数据结构体实例 (例如 models.TemperatureData)
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func (c *ChirpStackListener) recordSensorData(ctx context.Context, areaControllerID uint, sensorDeviceID uint, eventTime time.Time, sensorType models.SensorType, data interface{}) {
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reqCtx, logger := logs.Trace(ctx, c.ctx, "recordSensorData")
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// 1. 将传入的结构体序列化为 JSON
jsonData, err := json.Marshal(data)
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if err != nil {
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logger.Errorf("记录传感器数据失败:序列化数据为 JSON 时出错: %v", err)
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return
}
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// 2. 构建 SensorData 模型
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sensorData := &models.SensorData{
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Time: eventTime,
DeviceID: sensorDeviceID,
AreaControllerID: areaControllerID,
SensorType: sensorType,
Data: datatypes.JSON(jsonData),
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}
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// 3. 调用仓库创建记录
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if err := c.sensorDataRepo.Create(reqCtx, sensorData); err != nil {
logger.Errorf("记录传感器数据失败:存入数据库时出错: %v", err)
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}
}