93 lines
2.1 KiB
Go
93 lines
2.1 KiB
Go
package main
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import (
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"bytes"
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"context"
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"encoding/json"
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"flag"
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"log"
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"net"
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"net/http"
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"os"
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"time"
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"git.netflux.io/rob/solar-toolkit/inverter"
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)
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const (
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httpUserAgent = "solar-toolkit (git.netflux.io)"
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httpTimeout = time.Second * 5
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)
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func main() {
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var (
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inverterAddr string
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gatewayEndpoint string
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gatewayUsername string
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gatewayPassword string
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pollInterval time.Duration
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)
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flag.StringVar(&inverterAddr, "inverter-addr", "", "IP+port of solar inverter")
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flag.StringVar(&gatewayEndpoint, "endpoint", "", "URL to post metrics to")
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flag.StringVar(&gatewayUsername, "username", "", "HTTP basic auth username")
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flag.StringVar(&gatewayPassword, "password", "", "HTTP basic auth password")
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flag.DurationVar(&pollInterval, "pollInterval", time.Minute, "Poll interval, example: 60s")
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flag.Parse()
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if gatewayEndpoint == "" || inverterAddr == "" {
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flag.Usage()
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os.Exit(1)
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}
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conn, err := net.Dial("udp", inverterAddr)
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if err != nil {
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log.Fatalf("error dialing: %s", err)
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}
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defer conn.Close()
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var inv inverter.ET
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ticker := time.NewTicker(pollInterval)
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defer ticker.Stop()
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client := http.Client{Timeout: httpTimeout}
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for ; true; <-ticker.C {
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runtimeData, err := inv.RuntimeData(context.Background(), conn)
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if err != nil {
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log.Printf("error fetching runtime data: %s", err)
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continue
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}
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reqBody, err := json.Marshal(runtimeData)
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if err != nil {
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log.Printf("error encoding runtime data: %s", err)
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continue
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}
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req, err := http.NewRequest(http.MethodPost, gatewayEndpoint, bytes.NewReader(reqBody))
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if err != nil {
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log.Printf("error building request: %s", err)
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continue
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}
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req.Header.Set("content-type", "application/json")
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req.Header.Set("user-agent", httpUserAgent)
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if gatewayUsername != "" && gatewayPassword != "" {
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req.SetBasicAuth(gatewayUsername, gatewayPassword)
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}
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resp, err := client.Do(req)
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if err != nil {
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log.Printf("error sending request: %s", err)
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continue
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}
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if resp.StatusCode != http.StatusOK {
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log.Printf("unexpected HTTP response code: %d", resp.StatusCode)
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continue
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}
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log.Printf("OK: %s", runtimeData.PVPower.String())
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}
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}
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