inital commit

.gitignore

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+GoMqttIR_*

Makefile

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+#!/usr/bin/make
+.DEFAULT_GOAL := list 
+
+list: #Shows this list
+	@echo The following options are available
+	@grep '^[^#[:space:]].*:' Makefile | grep -v := | grep \# | sed -e "s/:[^|]*#/: /g"
+
+all: prepair  amd64_build arm64_build arm_build #Build for all targets (excludes native)
+
+native: prepair native_build #Build for "Native" target
+amd64: prepair amd64_build #Build for amd64 target
+arm64: prepair arm64_build #Build for arm64 target
+arm: prepair arm_build #Build for arm target
+
+prepair:
+	go get
+	go install 
+
+native_build: 
+	go build -o GoMqttIR_Native
+
+amd64_build: 
+	env GOARCH=amd64 go build -o GoMqttIR_amd64
+
+arm64_build:
+	env GOARCH=arm64 go build -o GoMqttIR_arm64
+
+arm_build:
+	env GOARCH=arm go build -o GoMqttIR_arm
+
+clean: # Run cleanup
+	go clean
+	rm -f GoMqttIR_Native GoMqttIR_amd64 GoMqttIR_arm64 GoMqttIR_arm

Readme.md

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+# GoMqttIR
+
+an ir-ctl command wrapper to bridge mqtt with an ir blaster written in golang

go.mod

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+module brammp.nl/GoMqttIR
+
+go 1.21.1
+
+require github.com/eclipse/paho.mqtt.golang v1.4.3
+require github.com/gorilla/websocket v1.5.0
+require golang.org/x/sync v0.4.0
+require golang.org/x/net v0.17.0

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 v0.17.0 h1:pVaXccu2ozPjCXewfr1S7xza/zcXTity9cCdXQYSjIM=
+golang.org/x/net v0.17.0/go.mod h1:NxSsAGuq816PNPmqtQdLE42eU2Fs7NoRIZrHJAlaCOE=
+golang.org/x/sync v0.4.0 h1:zxkM55ReGkDlKSM+Fu41A+zmbZuaPVbGMzvvdUPznYQ=
+golang.org/x/sync v0.4.0/go.mod h1:FU7BRWz2tNW+3quACPkgCx/L+uEAv1htQ0V83Z9Rj+Y=

main.go

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+package main
+
+import (
+    "fmt"
+    mqtt "github.com/eclipse/paho.mqtt.golang"
+    "time"
+    "os/exec"
+    "os"
+    "flag"
+)
+
+//mqtt Event listener
+var messagePubHandler mqtt.MessageHandler = func(client mqtt.Client, msg mqtt.Message) {
+    fmt.Printf("Received message: %s from topic: %s\n", msg.Payload(), msg.Topic())
+    RecievedPayload := string(msg.Payload())
+    cmd := exec.Command("ir-ctl","-S" + RecievedPayload)
+    out, err := cmd.Output()
+    if err != nil {
+        fmt.Println("could not run command: ", err)
+    }
+    fmt.Println("Output: ", string(out))
+}
+
+var connectHandler mqtt.OnConnectHandler = func(client mqtt.Client) {
+    fmt.Println("Connected")
+}
+
+var connectLostHandler mqtt.ConnectionLostHandler = func(client mqtt.Client, err error) {
+    fmt.Printf("Connect lost: %v", err)
+}
+
+func main() {
+    //Set variables
+    var DeviceName string
+    var broker = "192.168.1.4"
+    var port = 1883
+    var CoreTopic = "KodiIR"
+    //Get the hostname as sane default for mqtt topic/device id
+    hostname, err := os.Hostname()
+	if err != nil {
+		panic(err)
+	}
+    //innput flag -DeviceName
+    flag.StringVar(&DeviceName, "DeviceName", hostname, "The name that will be used as the topic an mqtt DeviceID")
+    flag.Parse()
+    //Set Mqtt Client options
+    opts := mqtt.NewClientOptions()
+    opts.AddBroker(fmt.Sprintf("tcp://%s:%d", broker, port))
+    opts.SetClientID(DeviceName)
+    opts.SetDefaultPublishHandler(messagePubHandler)
+    opts.SetWill(CoreTopic + "/" + DeviceName + "/status", "Offline", 0, true)
+    opts.OnConnect = connectHandler
+    opts.OnConnectionLost = connectLostHandler
+
+    client := mqtt.NewClient(opts)
+    if token := client.Connect(); token.Wait() && token.Error() != nil {
+        panic(token.Error())
+    }
+    //Subscribe to command toptic
+    client.Subscribe(CoreTopic + "/" + DeviceName + "/cmd", 1, nil).Wait()
+    //Publish connect msg
+    client.Publish(CoreTopic + "/" + DeviceName + "/status", 0, true, "Online")
+    //Print status
+    fmt.Printf("Mqtt subscribed")
+    //Loop so the program keeps running
+    for {
+        time.Sleep(time.Hour)
+    }
+
+    //Publish disconnect msg
+    client.Publish(CoreTopic + "/" + DeviceName + "/status", 0, true, "Offline")
+    client.Disconnect(250)
+}

mqttir.service

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+[Unit]
+Description=IR over MQTT controller
+After=multi-user.target
+
+
+[Service]
+Type=simple
+Restart=always
+ExecStart=/opt/GoMqttIR_<ARCH> <DeviceName>
+[Install]
+WantedBy=multi-user.target