Wolfgang Hottgenroth
ee2c5f31e8
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104 lines
2.5 KiB
Go
104 lines
2.5 KiB
Go
package mbgw3
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import (
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"log"
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//"reflect"
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"time"
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"strconv"
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"fmt"
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"encoding/json"
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"udi/config"
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"udi/handlers/handler"
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"udi/database"
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)
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var idSeq int = 0
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type Mbgw3Handler struct {
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id int
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dbh *database.DatabaseHandle
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}
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type Observation struct {
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Status string `json:"Status"`
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RequestId string `json:"RequestId"`
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Device string `json:"Device"`
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Errors string `json:"Errors"`
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ErrorRatio string `json:"ErrorRatio"`
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Requests string `json:"Requests"`
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Values map[string]string
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}
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func NewMbgw3Handler(config config.HandlerConfigT) handler.Handler {
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t := &Mbgw3Handler {
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id: idSeq,
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}
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idSeq += 1
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t.dbh = database.NewDatabaseHandle()
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return t
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}
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func (self *Mbgw3Handler) GetId() string {
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return fmt.Sprintf("MBGW3%d", self.id)
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}
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func (self *Mbgw3Handler) Handle(message handler.MessageT) {
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// log.Printf("Handler MBGW3 %d processing %s -> %s", self.id, message.Topic, message.Payload)
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var observation Observation
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err := json.Unmarshal([]byte(message.Payload), &observation)
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if err != nil {
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log.Printf("Unable to parse payload into Observation struct, message %s -> %s is lost, error ", message.Topic, message.Payload, err)
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return
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}
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var measurement database.Measurement
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measurement.Time = time.Now()
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if observation.Device == "Gas" {
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measurement.Application = "Gas"
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measurement.Device = "Gasmeter"
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} else {
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measurement.Application = "Power"
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measurement.Device = observation.Device
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}
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measurement.Attributes = make(map[string]interface{})
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if v, err := strconv.Atoi(observation.RequestId); err == nil {
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measurement.Attributes["RequestId"] = v
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}
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if v, err := strconv.ParseFloat(observation.ErrorRatio, 32); err == nil {
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measurement.Attributes["ErrorRatio"] = v
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}
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if v, err := strconv.Atoi(observation.Errors); err == nil {
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measurement.Attributes["Errors"] = v
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}
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if v, err := strconv.Atoi(observation.Requests); err == nil {
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measurement.Attributes["Requests"] = v
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}
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measurement.Attributes["Status"] = observation.Status
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measurement.Values = make(map[string]database.VariableType)
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unitMap := map[string]string { "Energy": "Wh", "Power": "W", "Voltage": "V", "Current": "A", "Volume": "m3" }
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for k, v := range observation.Values {
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unit, exists := unitMap[k]
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if ! exists {
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unit = "Unmapped Unit"
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}
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measurement.Values[k] = database.VariableType {
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Label: "",
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Variable: k,
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Unit: unit,
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Value: v,
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}
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}
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// log.Printf("Prepared measurement item: %s", measurement)
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self.dbh.StoreMeasurement(&measurement)
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}
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