Refactor build workflow to support multi-architecture builds and enhance MQTT connection handling

.github/workflows/pr-build.yml

@@ -7,61 +7,34 @@ env:
   REPO: kerberos/agent
 
 jobs:
-  build-amd64:
-    runs-on: ubuntu-24.04
+  build:
+    runs-on: ${{ matrix.runner }}
     permissions:
       contents: write
     strategy:
       matrix:
-        architecture: [amd64]
+        include:
+          - architecture: amd64
+            runner: ubuntu-24.04
+            dockerfile: Dockerfile
+          - architecture: arm64
+            runner: ubuntu-24.04-arm
+            dockerfile: Dockerfile.arm64
     steps:
+      - name: Checkout
+        uses: actions/checkout@v3
       - name: Login to DockerHub
         uses: docker/login-action@v2
         with:
           username: ${{ secrets.DOCKER_USERNAME }}
           password: ${{ secrets.DOCKER_PASSWORD }}
-      - name: Checkout
-        uses: actions/checkout@v3
       - uses: benjlevesque/short-sha@v2.1
         id: short-sha
         with:
           length: 7
       - name: Run Build
         run: |
-          docker build -t ${{matrix.architecture}} .
-          CID=$(docker create ${{matrix.architecture}})
-          docker cp ${CID}:/home/agent ./output-${{matrix.architecture}}
-          docker rm ${CID}
-      - name: Strip binary
-        run: tar -cf agent-${{matrix.architecture}}.tar -C output-${{matrix.architecture}} . && rm -rf output-${{matrix.architecture}}
-      - name: Upload artifact
-        uses: actions/upload-artifact@v4
-        with:
-          name: agent-${{matrix.architecture}}.tar
-          path: agent-${{matrix.architecture}}.tar
-          
-  build-arm64:
-    runs-on: ubuntu-24.04-arm 
-    permissions:
-      contents: write
-    strategy:
-      matrix:
-        architecture: [arm64]
-    steps:
-      - name: Login to DockerHub
-        uses: docker/login-action@v2
-        with:
-          username: ${{ secrets.DOCKER_USERNAME }}
-          password: ${{ secrets.DOCKER_PASSWORD }}
-      - name: Checkout
-        uses: actions/checkout@v3
-      - uses: benjlevesque/short-sha@v2.1
-        id: short-sha
-        with:
-          length: 7
-      - name: Run Build
-        run: |
-          docker build -t ${{matrix.architecture}} -f Dockerfile.arm64 .
+          docker build -t ${{ matrix.architecture }} -f ${{ matrix.dockerfile }} .
           CID=$(docker create ${{matrix.architecture}})
           docker cp ${CID}:/home/agent ./output-${{matrix.architecture}}
           docker rm ${CID}

machinery/src/routers/mqtt/main.go

@@ -90,12 +90,16 @@ func ConfigureMQTT(configDirectory string, configuration *models.Configuration,
 
 		// Some extra options to make sure the connection behaves
 		// properly. More information here: github.com/eclipse/paho.mqtt.golang.
-		opts.SetCleanSession(true)
+		opts.SetCleanSession(false)
+		opts.SetResumeSubs(true)
+		opts.SetStore(mqtt.NewMemoryStore())
 		opts.SetConnectRetry(true)
 		opts.SetAutoReconnect(true)
 		opts.SetConnectRetryInterval(5 * time.Second)
+		opts.SetMaxReconnectInterval(1 * time.Minute)
 		opts.SetKeepAlive(30 * time.Second)
 		opts.SetPingTimeout(10 * time.Second)
+		opts.SetWriteTimeout(10 * time.Second)
 		opts.SetOrderMatters(false)
 		opts.SetConnectTimeout(30 * time.Second)
 		opts.SetConnectionLostHandler(func(client mqtt.Client, err error) {
@@ -108,6 +112,9 @@ func ConfigureMQTT(configDirectory string, configuration *models.Configuration,
 		opts.SetReconnectingHandler(func(client mqtt.Client, options *mqtt.ClientOptions) {
 			log.Log.Warning("routers.mqtt.main.ConfigureMQTT(): reconnecting to MQTT broker")
 		})
+		opts.SetOnConnectHandler(func(c mqtt.Client) {
+			log.Log.Info("routers.mqtt.main.ConfigureMQTT(): MQTT session is online")
+		})
 
 		hubKey := ""
 		// This is the old way ;)
@@ -150,6 +157,8 @@ func ConfigureMQTT(configDirectory string, configuration *models.Configuration,
 		if token := mqc.Connect(); token.WaitTimeout(30 * time.Second) {
 			if token.Error() != nil {
 				log.Log.Error("routers.mqtt.main.ConfigureMQTT(): unable to establish mqtt broker connection, error was: " + token.Error().Error())
+			} else {
+				log.Log.Info("routers.mqtt.main.ConfigureMQTT(): initial MQTT connection established")
 			}
 		} else {
 			log.Log.Error("routers.mqtt.main.ConfigureMQTT(): timed out while establishing mqtt broker connection")

ui/src/pages/Dashboard/Dashboard.jsx

@@ -41,16 +41,10 @@ class Dashboard extends React.Component {
     this.handleLiveviewLoad = this.handleLiveviewLoad.bind(this);
   }
 
-  handleLiveviewLoad() {
-    this.setState({
-      liveviewLoaded: true,
-    });
-  }
-
   componentDidMount() {
     const liveview = document.getElementsByClassName('videocard-video');
     if (liveview && liveview.length > 0) {
-      this.liveviewElement = liveview[0];
+      [this.liveviewElement] = liveview;
       this.liveviewElement.addEventListener('load', this.handleLiveviewLoad);
     }
     this.initialiseLiveview();
@@ -77,6 +71,12 @@ class Dashboard extends React.Component {
     dispatchSend(message);
   }
 
+  handleLiveviewLoad() {
+    this.setState({
+      liveviewLoaded: true,
+    });
+  }
+
   handleClose() {
     this.setState({
       open: false,