dockerize event proxy go app

event_proxy/.env

@@ -0,0 +1,2 @@
+export MQTT_HOST="localhost"
+export MQTT_PORT="5883"

event_proxy/Dockerfile

@@ -0,0 +1,30 @@
+# Build stage
+FROM golang:1.25-alpine AS builder
+
+WORKDIR /app
+
+# Install git, gcc, musl-dev, and sqlite-dev for go mod and CGO
+RUN apk add --no-cache git gcc musl-dev sqlite-dev
+
+# Copy go mod and sum files
+COPY go.mod go.sum ./
+
+# Download dependencies
+RUN go mod download
+
+COPY ./*.go .
+
+# Enable CGO for go-sqlite3
+ENV CGO_ENABLED=1
+
+RUN go build -o main .
+
+FROM alpine:latest
+
+WORKDIR /app
+
+COPY --from=builder /app/main .
+
+EXPOSE 8080
+
+CMD ["./main"]

event_proxy/build.sh

@@ -0,0 +1,16 @@
+#!/bin/sh
+
+set -e
+
+export AWS_PROFILE=personal
+export AWS_REGION=eu-central-1
+
+REPO_NAME="homeassistant-event-proxy-homelabstack"
+
+if ! aws ecr describe-repositories --repository-names "$REPO_NAME" >/dev/null 2>&1; then
+  aws ecr create-repository --repository-name "$REPO_NAME"
+fi
+
+docker buildx build --platform linux/amd64,linux/arm64  -t "853019563312.dkr.ecr.eu-central-1.amazonaws.com/$REPO_NAME:latest"  --push .
+
+echo "Docker image built and pushed to AWS ECR"

event_proxy/go.mod

@@ -2,8 +2,9 @@ module event_proxy
 
 go 1.25.0
 
+require github.com/eclipse/paho.mqtt.golang v1.5.1
+
 require (
-	github.com/eclipse/paho.mqtt.golang v1.5.1 // indirect
 	github.com/gorilla/websocket v1.5.3 // indirect
 	golang.org/x/net v0.44.0 // indirect
 	golang.org/x/sync v0.17.0 // indirect

event_proxy/main.go

@@ -18,9 +18,20 @@ type App struct {
 }
 
 func getMQTTClient() mqtt.Client {
-	// TODO: get port and host from env vars
+	mqttHost := os.Getenv("MQTT_HOST")
+	if mqttHost == "" {
+		panic("MQTT_HOST environment variable not set")
+	}
+	mqttPort := os.Getenv("MQTT_PORT")
+	if mqttPort == "" {
+		panic("MQTT_PORT environment variable not set")
+	}
+
+	brokerURL := "tcp://" + mqttHost + ":" + mqttPort
+	slog.Info("Connecting to MQTT", "broker", brokerURL)
+
 	opts := mqtt.NewClientOptions().
-		AddBroker("tcp://localhost:5883").
+		AddBroker(brokerURL).
 		SetClientID("event-proxy")
 
 	client := mqtt.NewClient(opts)
@@ -29,11 +40,6 @@ func getMQTTClient() mqtt.Client {
 		panic(token.Error())
 	}
 	return client
-
-	// // Publish a message
-	// token := client.Publish("homeassistant/sensor/bws/node1/state1", 0, false, `{"temp": 23.5, "humidity": 45, "pressure": 1013}`)
-	// token.Wait()
-	// client.Disconnect(250)
 }
 
 type Message struct {