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main.go
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package main
import (
"encoding/json"
"flag"
"fmt"
"io/ioutil"
"log"
"net/http"
"net/url"
"os"
"strconv"
"time"
"github.com/prometheus/client_golang/prometheus"
"github.com/prometheus/client_golang/prometheus/promauto"
"github.com/prometheus/client_golang/prometheus/promhttp"
)
func init() {
token = os.Getenv("DECONZ_TOKEN")
deconzHost = os.Getenv("DECONZ_HOST")
parsedDeconzPort, err := strconv.Atoi(os.Getenv("DECONZ_PORT"))
if err != nil {
log.Fatalf("%s must be integer", "DECONZ_PORT")
}
deconzPort = parsedDeconzPort
portEnv := os.Getenv("DECONZ_APP_PORT")
if portEnv != "" {
// If the environment variable is set, use this value.
// If it is not set, the default value for the port is used.
parsedPort, err := strconv.Atoi(portEnv)
if err != nil {
log.Fatalf("%s must be integer", "DECONZ_APP_PORT")
}
port = parsedPort
}
flag.BoolVar(&verbose, "verbose", false, "Verbose logging")
}
func evalVars() error {
if token == "" {
return fmt.Errorf("DECONZ_TOKEN is required")
} else if deconzHost == "" {
return fmt.Errorf("DECONZ_HOST is required")
} else if deconzPort == 0 {
return fmt.Errorf("DECONZ_PORT is required")
} else if port == 0 {
return fmt.Errorf("DECONZ_APP_PORT is required")
}
return nil
}
func main() {
flag.Parse()
if err := evalVars(); err != nil {
log.Fatalf("%s", err)
}
recordMetrics()
serve()
}
func serve() {
http.Handle("/metrics", promhttp.Handler())
http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
w.Write([]byte(`<html>
<head><title>Deconz Exporter</title></head>
<body>
<h1>Deconz Exporter</h1>
<p><a href="/metrics">Metrics</a></p>
</body>
</html>`))
})
instance := fmt.Sprintf(":%d", port)
fmt.Println("Starting Server on", instance)
log.Fatal(http.ListenAndServe(instance, nil))
}
const (
// DefaultPort describes the port the application will use if no dedicated port
// is defined as an environment variable
DefaultPort int = 8080
)
var (
deconzHost = ""
deconzPort = 0
port = DefaultPort
token = ""
verbose = false
labels = []string{"name", "uid", "manufacturer", "model", "type"}
labelsArbi = []string{"name", "manufacturer", "model"}
tmpMetric = promauto.NewGaugeVec(prometheus.GaugeOpts{
Namespace: "deconz",
Subsystem: "sensor",
Name: "temperature",
Help: "Temperature of sensor in Celsius",
}, labels)
openMetric = promauto.NewGaugeVec(prometheus.GaugeOpts{
Namespace: "deconz",
Subsystem: "sensor",
Name: "open",
Help: "Open state of sensor",
}, labels)
valveMetric = promauto.NewGaugeVec(prometheus.GaugeOpts{
Namespace: "deconz",
Subsystem: "sensor",
Name: "valve",
Help: "valve state of sensor",
}, labels)
onMetric = promauto.NewGaugeVec(prometheus.GaugeOpts{
Namespace: "deconz",
Subsystem: "sensor",
Name: "on",
Help: "On state of sensor",
}, labels)
heatsetpointMetric = promauto.NewGaugeVec(prometheus.GaugeOpts{
Namespace: "deconz",
Subsystem: "sensor",
Name: "heatsetpoint",
Help: "heatsetpoint state of sensor",
}, labels)
modeMetric = promauto.NewGaugeVec(prometheus.GaugeOpts{
Namespace: "deconz",
Subsystem: "sensor",
Name: "mode",
Help: "mode state of sensor",
}, labels)
powerMetrics = promauto.NewGaugeVec(prometheus.GaugeOpts{
Namespace: "deconz",
Subsystem: "sensor",
Name: "power",
Help: "power level of sensor in percent",
}, labels)
btryMetric = promauto.NewGaugeVec(prometheus.GaugeOpts{
Namespace: "deconz",
Subsystem: "sensor",
Name: "battery",
Help: "Battery level of sensor in percent",
}, labelsArbi)
humidMetric = promauto.NewGaugeVec(prometheus.GaugeOpts{
Namespace: "deconz",
Subsystem: "sensor",
Name: "humidity",
Help: "Humidity of sensor in percent",
}, labels)
pressureMetric = promauto.NewGaugeVec(prometheus.GaugeOpts{
Namespace: "deconz",
Subsystem: "sensor",
Name: "pressure",
Help: "Air pressure in hectopascal (hPa)",
}, labels)
lastUpdMetric = promauto.NewGaugeVec(prometheus.GaugeOpts{
Namespace: "deconz",
Subsystem: "sensor",
Name: "sinceUpdate",
Help: "The time since the last update that was received from this sensor",
}, labelsArbi)
errorCtr = promauto.NewCounter(prometheus.CounterOpts{
Namespace: "deconz",
Subsystem: "sensor",
Name: "errors",
Help: "Failures to retrieve data from API",
})
)
func recordMetrics() {
url := url.URL{
Scheme: "http",
Host: fmt.Sprintf("%s:%d", deconzHost, deconzPort),
Path: fmt.Sprintf("api/%s/sensors", token),
}
go func() {
for {
sensors, err := pollSensors(url)
if err != nil {
errorCtr.Inc()
if verbose {
fmt.Println("failed to retrieve data", err)
}
} else {
if verbose {
fmt.Printf("%+v", sensors)
}
for _, sensor := range sensors {
if isSupportedSensor(sensor.Type) {
labels := prometheus.Labels{"name": sensor.Name, "uid": sensor.UID, "manufacturer": sensor.Manufacturer, "model": sensor.ModelID, "type": sensor.Type}
slimLabels := prometheus.Labels{"name": sensor.Name, "manufacturer": sensor.Manufacturer, "model": sensor.ModelID}
switch sensor.Type {
case "ZHATemperature":
tmpMetric.With(labels).Set(float64(sensor.State.Temperature) / 100.0)
lastUpdMetric.With(slimLabels).Set(float64(timeDiff(sensor.State.Lastupdated).Seconds()))
case "ZHAHumidity":
humidMetric.With(labels).Set(float64(sensor.State.Humidity) / 100.0)
lastUpdMetric.With(slimLabels).Set(float64(timeDiff(sensor.State.Lastupdated).Seconds()))
case "ZHAPressure":
pressureMetric.With(labels).Set(float64(sensor.State.Pressure))
lastUpdMetric.With(slimLabels).Set(float64(timeDiff(sensor.State.Lastupdated).Seconds()))
case "Daylight":
lastUpdMetric.With(slimLabels).Set(float64(timeDiff(sensor.State.Lastupdated).Seconds()))
case "ZHAOpenClose":
openMetric.With(labels).Set(float64(ConBool(sensor.State.Open)))
lastUpdMetric.With(slimLabels).Set(float64(timeDiff(sensor.State.Lastupdated).Seconds()))
case "ZHAThermostat":
tmpMetric.With(labels).Set(float64(sensor.State.Temperature) / 100.0)
valveMetric.With(labels).Set(float64(sensor.State.Valve) / 25.5 * 10.0)
onMetric.With(labels).Set(float64(ConBool(sensor.State.On)))
heatsetpointMetric.With(labels).Set(float64(sensor.Config.Heatsetpoint) / 100.0)
lastUpdMetric.With(slimLabels).Set(float64(timeDiff(sensor.State.Lastupdated).Seconds()))
case "ZHAConsumption":
powerMetrics.With(labels).Set(float64(sensor.State.Power))
lastUpdMetric.With(slimLabels).Set(float64(timeDiff(sensor.State.Lastupdated).Seconds()))
}
collectBatteryData(sensor, slimLabels)
}
}
}
time.Sleep(10 * time.Second)
}
}()
}
func collectBatteryData(sensor Sensor, labels prometheus.Labels) {
btryMetric.With(labels).Set(float64(sensor.Config.Battery))
}
func timeDiff(lastUpdate string) time.Duration {
// Parse Date
format := "2006-01-02T15:04:05"
if lastUpdate == "none" {
return 0
}
lastUpdateParsed, err := time.Parse(format, lastUpdate)
if err != nil {
log.Fatalf("Failed to parse date %s, %s", lastUpdate, err)
}
return time.Now().Sub(lastUpdateParsed)
}
func isSupportedSensor(dType string) bool {
switch dType {
case
"ZHATemperature",
"ZHAPressure",
"ZHAHumidity",
"ZHAThermostat",
"ZHAConsumption",
"ZHAOpenClose":
return true
}
return false
}
func ConBool(input bool) float64 {
if input {
return 1.0
}
return 0.0
}
func pollSensors(url url.URL) (map[string]Sensor, error) {
resp, err := http.Get(url.String())
if err != nil {
return nil, err
}
defer resp.Body.Close()
body, err := ioutil.ReadAll(resp.Body)
var s map[string]Sensor
if err := json.Unmarshal(body, &s); err != nil {
return nil, err
}
return s, err
}