Add spider-net and auto docker stuff

spider-net/.gitignore

@@ -0,0 +1 @@
+spider-net

spider-net/Dockerfile

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+FROM golang:1.22.5
+
+WORKDIR /app
+
+#COPY go.mod go.sum ./
+#RUN go mod download
+
+#COPY *.go ./
+#RUN CGO_ENABLED=0 GOOS=linux go build -o /spider-net
+
+COPY spider-net /spider-net
+
+CMD ["/spider-net"]

spider-net/build_and_upload.sh

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+CGO_ENABLED=0 GOOS=linux GOARCH=arm64 go build -o spider-net
+cd ..
+./docker.sh compose up spider-net -d --build

spider-net/go.mod

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+module spider-mqtt
+
+go 1.22
+
+require (
+	github.com/eclipse/paho.mqtt.golang v1.4.3 // indirect
+	github.com/gorilla/websocket v1.5.0 // indirect
+	golang.org/x/net v0.8.0 // indirect
+	golang.org/x/sync v0.1.0 // indirect
+)

spider-net/go.sum

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+github.com/eclipse/paho.mqtt.golang v1.4.3 h1:2kwcUGn8seMUfWndX0hGbvH8r7crgcJguQNCyp70xik=
+github.com/eclipse/paho.mqtt.golang v1.4.3/go.mod h1:CSYvoAlsMkhYOXh/oKyxa8EcBci6dVkLCbo5tTC1RIE=
+github.com/gorilla/websocket v1.5.0 h1:PPwGk2jz7EePpoHN/+ClbZu8SPxiqlu12wZP/3sWmnc=
+github.com/gorilla/websocket v1.5.0/go.mod h1:YR8l580nyteQvAITg2hZ9XVh4b55+EU/adAjf1fMHhE=
+golang.org/x/net v0.8.0 h1:Zrh2ngAOFYneWTAIAPethzeaQLuHwhuBkuV6ZiRnUaQ=
+golang.org/x/net v0.8.0/go.mod h1:QVkue5JL9kW//ek3r6jTKnTFis1tRmNAW2P1shuFdJc=
+golang.org/x/sync v0.1.0 h1:wsuoTGHzEhffawBOhz5CYhcrV4IdKZbEyZjBMuTp12o=
+golang.org/x/sync v0.1.0/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=

spider-net/main.go

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+package main
+
+import (
+	"fmt"
+	mqtt "github.com/eclipse/paho.mqtt.golang"
+	"log"
+	"net"
+	"os"
+	"time"
+)
+
+func getLocalIP() (string, error) {
+	addrs, err := net.InterfaceAddrs()
+	if err != nil {
+		return "", err
+	}
+	for _, addr := range addrs {
+		if ipnet, ok := addr.(*net.IPNet); ok && !ipnet.IP.IsLoopback() {
+			if ipnet.IP.To4() != nil {
+				return ipnet.IP.String(), nil
+			}
+		}
+	}
+	return "", fmt.Errorf("no IP address found")
+}
+
+func publishIp(client mqtt.Client, topic string) {
+	log.Printf("Publishing IP")
+	ip, err := getLocalIP()
+	if err != nil {
+		log.Printf("Error getting IP address: %v\n", err)
+		return
+	}
+	token := client.Publish(topic, 0, true, ip)
+	token.Wait()
+	if token.Error() != nil {
+		log.Printf("Error publishing IP address: %v\n", token.Error())
+	} else {
+		log.Printf("Published IP address: %s\n", ip)
+	}
+}
+
+func main() {
+	broker := "tcp://mqtt.seeseepuff.be:1883"
+	topic := "host/" + os.Getenv("SPIDER_HOSTNAME")
+
+	opts := mqtt.NewClientOptions()
+	opts.AddBroker(broker)
+	opts.SetClientID("spider-host-client")
+	client := mqtt.NewClient(opts)
+
+	token := client.Connect()
+	token.Wait()
+	if token.Error() != nil {
+		log.Fatalf("Error connecting to MQTT broker: %v\n", token.Error())
+	}
+
+	ticker := time.NewTicker(60 * time.Second)
+	defer ticker.Stop()
+
+	publishIp(client, topic)
+	for {
+		select {
+		case <-ticker.C:
+			publishIp(client, topic)
+		}
+	}
+}