initial commit

functions.go

@@ -0,0 +1,65 @@
+package main
+
+import (
+	"flag"
+	"log"
+	"os"
+
+	"gopkg.in/ini.v1"
+)
+
+// ParseArgs is not yet implemented
+func ParseArgs() error {
+	return nil
+}
+
+// GetConfig fetch config from ini file
+func GetConfig(configfile string, weatherconfig *WeatherConfig) error {
+	flag.Usage = Usage
+
+	config, err := ini.Load(configfile)
+	HandleFatalError(err)
+
+	var wc WeatherConfig
+
+	owmSection := config.Section("owm")
+	wc.OwmURL = owmSection.Key("url").String()
+	wc.OwmAppID = owmSection.Key("appid").String()
+	wc.OwmCities = owmSection.Key("cities").Strings(",")
+	wc.OwmMeasurements = owmSection.Key("measurements").Strings(",")
+	wc.OwmTable = owmSection.Key("table").String()
+
+	influxdbSection := config.Section("influxdb")
+	wc.InfluxHost = influxdbSection.Key("hostname").String()
+	wc.InfluxPort, err = influxdbSection.Key("port").Int()
+	HandleError(err)
+	wc.InfluxUser = influxdbSection.Key("username").String()
+	wc.InfluxPass = influxdbSection.Key("password").String()
+	wc.InfluxDB = influxdbSection.Key("database").String()
+
+	*weatherconfig = wc
+
+	return err
+}
+
+// HandleError handles errors to return err
+func HandleError(err error) error {
+	if err != nil {
+		return err
+	}
+	return nil
+}
+
+// HandleFatalError fatal errors
+func HandleFatalError(err error) {
+	if err != nil {
+		log.Fatal(err)
+		os.Exit(2)
+	}
+}
+
+// Usage displays possible arguments
+func Usage() {
+	flag.PrintDefaults()
+	os.Exit(1)
+}

types.go

@@ -0,0 +1,15 @@
+package main
+
+// WeatherConfig is the main configuration
+type WeatherConfig struct {
+	OwmURL          string
+	OwmAppID        string
+	OwmCities       []string
+	OwmMeasurements []string
+	OwmTable        string
+	InfluxHost      string
+	InfluxPort      int
+	InfluxUser      string
+	InfluxPass      string
+	InfluxDB        string
+}

weather.go

@@ -0,0 +1,55 @@
+package main
+
+import (
+	"flag"
+	"fmt"
+	"time"
+
+	_ "github.com/influxdata/influxdb1-client"
+	client "github.com/influxdata/influxdb1-client/v2"
+)
+
+var err error
+var now = time.Now()
+var wc WeatherConfig
+var configpath string
+
+const kelvin = -273.15
+
+func main() {
+
+	flag.StringVar(&configpath, "configfile", "common.ini", "config file to use with fuelprices section")
+	flag.Parse()
+	GetConfig(configpath, &wc)
+
+	httpClient, err := client.NewHTTPClient(client.HTTPConfig{
+		Addr:     fmt.Sprintf("http://%s:%d", wc.InfluxHost, wc.InfluxPort),
+		Username: wc.InfluxUser,
+		Password: wc.InfluxPass,
+	})
+	HandleFatalError(err)
+
+	bp, err := client.NewBatchPoints(client.BatchPointsConfig{
+		Database: wc.InfluxDB,
+	})
+	HandleFatalError(err)
+
+	Get
+
+	for _, p := range *prices {
+
+		tags := map[string]string{"pdv": p.ID, "fuel": p.Fuel}
+		fields := map[string]interface{}{"value": p.Amount}
+
+		point, _ := client.NewPoint(
+			wc.InfluxTable,
+			tags,
+			fields,
+			now,
+		)
+
+		bp.AddPoint(point)
+		err = httpClient.Write(bp)
+		HandleError(err)
+	}
+}