feat: multiarch build

Reviewed-on: #26

.dockerignore

@@ -0,0 +1,11 @@
+.git
+.gitignore
+.cursor
+*.md
+node_modules
+README.md
+docs
+test
+openapitools.json
+*.backup
+

Dockerfile

@@ -0,0 +1,41 @@
+# Build stage
+FROM node:20-alpine AS builder
+
+WORKDIR /app
+
+# Copy package files
+COPY package*.json ./
+
+# Install dependencies
+RUN npm ci --only=production
+
+# Runtime stage
+FROM node:20-alpine
+
+# Install wget for health checks
+RUN apk --no-cache add wget
+
+WORKDIR /app
+
+# Copy dependencies from builder
+COPY --from=builder /app/node_modules ./node_modules
+
+# Copy application files
+COPY package*.json ./
+COPY index.js index-standalone.js ./
+COPY public ./public
+COPY src ./src
+
+# Create non-root user (let Alpine assign available GID/UID)
+RUN addgroup spore && \
+    adduser -D -s /bin/sh -G spore spore && \
+    chown -R spore:spore /app
+
+USER spore
+
+# Expose port
+EXPOSE 3000
+
+# Run the application
+CMD ["node", "index.js"]
+

Makefile

@@ -0,0 +1,54 @@
+.PHONY: install build run clean docker-build docker-run docker-push docker-build-multiarch docker-push-multiarch
+
+# Install dependencies
+install:
+	npm install
+
+# Build the application (if needed)
+build: install
+
+# Run the application
+run:
+	node index.js
+
+# Start in development mode
+dev:
+	node index.js
+
+# Clean build artifacts
+clean:
+	rm -rf node_modules
+	rm -f package-lock.json
+
+# Docker variables
+DOCKER_REGISTRY ?= 
+IMAGE_NAME = wirelos/spore-ui
+IMAGE_TAG ?= latest
+FULL_IMAGE_NAME = $(if $(DOCKER_REGISTRY),$(DOCKER_REGISTRY)/$(IMAGE_NAME),$(IMAGE_NAME)):$(IMAGE_TAG)
+
+# Build Docker image
+docker-build:
+	docker build -t $(FULL_IMAGE_NAME) .
+
+# Run Docker container
+docker-run:
+	docker run -p 3000:3000 --rm $(FULL_IMAGE_NAME)
+
+# Push Docker image
+docker-push:
+	docker push $(FULL_IMAGE_NAME)
+
+# Build multiarch Docker image
+docker-build-multiarch:
+	docker buildx build --platform linux/amd64,linux/arm64 \
+		-t $(FULL_IMAGE_NAME) \
+		--push \
+		.
+
+# Push multiarch Docker image (if not pushed during build)
+docker-push-multiarch:
+	docker buildx build --platform linux/amd64,linux/arm64 \
+		-t $(FULL_IMAGE_NAME) \
+		--push \
+		.
+

README.md

@@ -23,6 +23,9 @@ This frontend server works together with the **SPORE Gateway** (spore-gateway) b
 ![UI](./assets/cluster.png)
 ### Topology
 ![UI](./assets/topology.png)
+### Events
+![UI](./assets/events.png)
+![UI](./assets/events-messages.png)
 ### Monitoring
 ![UI](./assets/monitoring.png)
 ### Firmware

docs/Events.md

@@ -0,0 +1,518 @@
+# Events Feature
+
+## Overview
+
+The Events feature provides real-time visualization of WebSocket events streaming through the SPORE cluster. It displays events as an interactive force-directed graph, showing the flow and relationships between different event topics.
+
+![Events View](./assets/events.png)
+
+## Features
+
+### Real-Time Event Visualization
+- **Interactive Graph**: Events are visualized as a force-directed graph using D3.js
+- **Topic Chain Visualization**: Multi-part topics (e.g., `cluster/event/api/neopattern`) are broken down into chains showing hierarchical relationships
+- **Event Counting**: Each event type is tracked with occurrence counts displayed on connections
+- **Animated Transitions**: New events trigger visual animations showing data flow through the graph
+
+### User Interactions
+
+#### Drag to Reposition Nodes
+- **Center Node**: Dragging the center (blue) node moves the entire graph together
+- **Topic Nodes**: Individual topic nodes (green) can be repositioned independently
+- **Fixed Positioning**: Once dragged, nodes maintain their positions to prevent layout disruption
+
+#### Zoom Controls
+- **Mouse Wheel**: Zoom in and out using the mouse wheel
+- **Scale Range**: Zoom level constrained between 0.5x and 5x
+- **Pan**: Click and drag the canvas to pan around the graph
+
+#### Rearrange Layout
+- **Rearrange Button**: Click the button in the top-left corner to reset node positions
+- **Automatic Layout**: Clears fixed positions and lets the force simulation reposition nodes
+
+### Visual Elements
+
+#### Node Types
+- **Center Node** (Blue):
+  - Represents the central event hub
+  - Always visible in the graph
+  - Acts as the root node for all event chains
+  - Larger size (18px radius)
+
+- **Topic Nodes** (Green):
+  - Represent individual topic segments
+  - Examples: `cluster`, `event`, `api`, `neopattern`
+  - Smaller size (14px radius)
+  - Positioned dynamically based on event frequency
+
+#### Link Types
+- **Center Links** (Blue):
+  - Connect the center node to root topic nodes
+  - Thicker lines (2.5px)
+  - Examples: center → `cluster`, center → `event`
+
+- **Topic Links** (Green):
+  - Connect adjacent topics in event chains
+  - Line thickness proportional to event frequency
+  - Examples: `cluster` → `event`, `api` → `neopattern`
+
+#### Hover Interactions
+- **Link Hover**: Links become thicker and more opaque when hovered
+- **Event Frequency**: Line thickness dynamically adjusts based on event occurrence counts
+
+## Architecture
+
+### Component Structure
+
+```12:37:spore-ui/public/scripts/components/EventComponent.js
+// Events Component - Visualizes websocket events as a graph
+class EventComponent extends Component {
+    constructor(container, viewModel, eventBus) {
+        super(container, viewModel, eventBus);
+        
+        this.svg = null;
+        this.simulation = null;
+        this.zoom = null;
+        this.width = 0;
+        this.height = 0;
+        this.isInitialized = false;
+        
+        // Center node data - will be initialized with proper coordinates later
+        this.centerNode = { id: 'center', type: 'center', label: '', x: 0, y: 0 };
+        
+        // Track nodes for D3
+        this.graphNodes = [];
+        this.graphLinks = [];
+        
+        // Track recent events to trigger animations
+        this.lastSeenEvents = new Set();
+    }
+```
+
+### ViewModel
+
+The `EventViewModel` manages the state and WebSocket connections:
+
+```1241:1253:spore-ui/public/scripts/view-models.js
+// Events View Model for websocket event visualization
+class EventViewModel extends ViewModel {
+    constructor() {
+        super();
+        this.setMultiple({
+            events: new Map(), // Map of topic -> { parts: [], count: number, lastSeen: timestamp }
+            isLoading: false,
+            error: null,
+            lastUpdateTime: null
+        });
+        
+        // Set up WebSocket listeners for real-time updates
+        this.setupWebSocketListeners();
+    }
+```
+
+### Event Tracking
+
+Events are tracked with the following metadata:
+- **Topic**: The full event topic path (e.g., `cluster/event/api/neopattern`)
+- **Parts**: Array of topic segments split by `/`
+- **Count**: Total occurrences of this event
+- **First Seen**: ISO timestamp of first occurrence
+- **Last Seen**: ISO timestamp of most recent occurrence
+- **Last Data**: The most recent event payload
+
+### Event Addition Logic
+
+The view model handles nested events specially:
+
+```1283:1329:spore-ui/public/scripts/view-models.js
+    // Add a topic (parsed by "/" separator)
+    addTopic(topic, data = null) {
+        // Get current events as a new Map to ensure change detection
+        const events = new Map(this.get('events'));
+        
+        // Handle nested events from cluster/event
+        let fullTopic = topic;
+        if (topic === 'cluster/event' && data && data.data) {
+            try {
+                const parsedData = typeof data.data === 'string' ? JSON.parse(data.data) : data.data;
+                if (parsedData && parsedData.event) {
+                    // Create nested topic chain: cluster/event/api/neopattern
+                    fullTopic = `${topic}/${parsedData.event}`;
+                }
+            } catch (e) {
+                // If parsing fails, just use the original topic
+            }
+        }
+        
+        const parts = fullTopic.split('/').filter(p => p);
+        
+        if (events.has(fullTopic)) {
+            // Update existing event - create new object to ensure change detection
+            const existing = events.get(fullTopic);
+            events.set(fullTopic, {
+                topic: existing.topic,
+                parts: existing.parts,
+                count: existing.count + 1,
+                firstSeen: existing.firstSeen,
+                lastSeen: new Date().toISOString(),
+                lastData: data
+            });
+        } else {
+            // Create new event entry
+            events.set(fullTopic, {
+                topic: fullTopic,
+                parts: parts,
+                count: 1,
+                firstSeen: new Date().toISOString(),
+                lastSeen: new Date().toISOString(),
+                lastData: data
+            });
+        }
+        
+        // Use set to trigger change notification
+        this.set('events', events);
+        this.set('lastUpdateTime', new Date().toISOString());
+    }
+```
+
+## Graph Construction
+
+### Node Creation
+
+The graph construction process follows two passes:
+
+1. **First Pass - Node Creation**:
+   - Creates nodes for each unique topic segment
+   - Preserves existing node positions if they've been dragged
+   - New nodes are positioned near their parent in the hierarchy
+
+2. **Second Pass - Event Counting**:
+   - Counts occurrences of each topic segment
+   - Updates node counts to reflect event frequency
+
+### Link Construction
+
+Links are created as chains representing complete topic paths:
+
+```283:342:spore-ui/public/scripts/components/EventComponent.js
+        // Build links as chains for each topic
+        // For "cluster/update", create: center -> cluster -> update
+        this.graphLinks = [];
+        const linkSet = new Set(); // Track links to avoid duplicates
+        
+        if (events && events.size > 0) {
+            for (const [topic, data] of events) {
+                const parts = data.parts;
+                
+                if (parts.length === 0) continue;
+                
+                // Connect center to first part
+                const firstPart = parts[0];
+                const centerToFirst = `center-${firstPart}`;
+                if (!linkSet.has(centerToFirst)) {
+                    this.graphLinks.push({
+                        source: 'center',
+                        target: firstPart,
+                        type: 'center-link',
+                        count: data.count,
+                        topic: topic
+                    });
+                    linkSet.add(centerToFirst);
+                } else {
+                    // Update count for existing link
+                    const existingLink = this.graphLinks.find(l => 
+                        `${l.source}-${l.target}` === centerToFirst
+                    );
+                    if (existingLink) {
+                        existingLink.count += data.count;
+                    }
+                }
+                
+                // Connect each part to the next (creating a chain)
+                for (let i = 0; i < parts.length - 1; i++) {
+                    const source = parts[i];
+                    const target = parts[i + 1];
+                    const linkKey = `${source}-${target}`;
+                    
+                    if (!linkSet.has(linkKey)) {
+                        this.graphLinks.push({
+                            source: source,
+                            target: target,
+                            type: 'topic-link',
+                            topic: topic,
+                            count: data.count
+                        });
+                        linkSet.add(linkKey);
+                    } else {
+                        // Update count for existing link
+                        const existingLink = this.graphLinks.find(l => 
+                            `${l.source}-${l.target}` === linkKey
+                        );
+                        if (existingLink) {
+                            existingLink.count += data.count;
+                        }
+                    }
+                }
+            }
+        }
+```
+
+## Force Simulation
+
+The D3.js force simulation provides the physics-based layout:
+
+```103:111:spore-ui/public/scripts/components/EventComponent.js
+        // Initialize simulation
+        this.simulation = d3.forceSimulation()
+            .force('link', d3.forceLink().id(d => d.id).distance(100))
+            .force('charge', d3.forceManyBody().strength(-300))
+            .force('center', d3.forceCenter(this.width / 2, this.height / 2))
+            .force('collision', d3.forceCollide().radius(35))
+            .alphaDecay(0.0228) // Slower decay to allow simulation to run longer
+            .velocityDecay(0.4); // Higher velocity decay for smoother, less jumpy movement
+```
+
+### Force Parameters
+- **Link Force**: Maintains 100px distance between connected nodes
+- **Charge Force**: -300 strength creates repulsion between nodes
+- **Center Force**: Keeps the graph centered in the viewport
+- **Collision Detection**: Prevents nodes from overlapping (35px collision radius)
+- **Decay Rate**: Slow decay (0.0228) keeps the simulation running smoothly
+- **Velocity Decay**: High decay (0.4) prevents excessive movement
+
+## Animation System
+
+### Event Arrival Animation
+
+When a new event arrives, a golden animation dot travels along the event chain:
+
+```725:809:spore-ui/public/scripts/components/EventComponent.js
+    animateEventMessage(topic, data) {
+        const g = this.svg.select('g');
+        if (g.empty()) return;
+        
+        const parts = data.parts || topic.split('/').filter(p => p);
+        if (parts.length === 0) return;
+        
+        // Wait for the next tick to ensure nodes exist
+        setTimeout(() => {
+            // Build the chain: center -> first -> second -> ... -> last
+            const chain = ['center', ...parts];
+            
+            // Animate along each segment of the chain
+            let delay = 0;
+            for (let i = 0; i < chain.length - 1; i++) {
+                const sourceId = chain[i];
+                const targetId = chain[i + 1];
+                
+                const sourceNode = this.graphNodes.find(n => n.id === sourceId);
+                const targetNode = this.graphNodes.find(n => n.id === targetId);
+                
+                if (!sourceNode || !targetNode) continue;
+                
+                setTimeout(() => {
+                    this.animateDotAlongLink(sourceNode, targetNode, g);
+                }, delay);
+                
+                // Add delay between segments (staggered animation)
+                delay += 400; // Duration (300ms) + small gap (100ms)
+            }
+        }, 100);
+    }
+    
+    animateDotAlongLink(sourceNode, targetNode, g) {
+        if (!sourceNode || !targetNode || !g) return;
+        
+        // Calculate positions
+        const dx = targetNode.x - sourceNode.x;
+        const dy = targetNode.y - sourceNode.y;
+        const length = Math.sqrt(dx * dx + dy * dy);
+        
+        if (length === 0) return;
+        
+        // Normalize direction
+        const nx = dx / length;
+        const ny = dy / length;
+        
+        // Calculate node radii
+        const sourceRadius = sourceNode.type === 'center' ? 18 : 14;
+        const targetRadius = targetNode.type === 'center' ? 18 : 14;
+        
+        // Start from edge of source node
+        const startX = sourceNode.x + nx * sourceRadius;
+        const startY = sourceNode.y + ny * sourceRadius;
+        
+        // End at edge of target node
+        const endX = targetNode.x - nx * targetRadius;
+        const endY = targetNode.y - ny * targetRadius;
+        
+        // Create animation dot
+        const animationGroup = g.append('g').attr('class', 'animation-group');
+        
+        const dot = animationGroup.append('circle')
+            .attr('r', 4)
+            .attr('fill', '#FFD700')
+            .attr('stroke', '#fff')
+            .attr('stroke-width', 2)
+            .attr('cx', startX)
+            .attr('cy', startY);
+        
+        // Animate the dot along the path
+        dot.transition()
+            .duration(300)
+            .ease(d3.easeLinear)
+            .attr('cx', endX)
+            .attr('cy', endY)
+            .on('end', function() {
+                // Fade out after reaching destination
+                dot.transition()
+                    .duration(100)
+                    .style('opacity', 0)
+                    .remove();
+                animationGroup.remove();
+            });
+    }
+```
+
+### Animation Characteristics
+- **Golden Dot**: Visual indicator traveling along event chains
+- **Staggered Timing**: Each segment of a multi-part topic animates sequentially
+- **Duration**: 300ms per segment with 100ms delay between segments
+- **Smooth Motion**: Linear easing for consistent speed
+
+## WebSocket Integration
+
+The Events view subscribes to all WebSocket messages through the gateway:
+
+```1256:1280:spore-ui/public/scripts/view-models.js
+    // Set up WebSocket event listeners
+    setupWebSocketListeners() {
+        if (!window.wsClient) {
+            // Retry after a short delay to allow wsClient to initialize
+            setTimeout(() => this.setupWebSocketListeners(), 1000);
+            return;
+        }
+
+        // Listen for all websocket messages
+        window.wsClient.on('message', (data) => {
+            const topic = data.topic || data.type;
+            
+            if (topic) {
+                this.addTopic(topic, data);
+            }
+        });
+
+        // Listen for connection status changes
+        window.wsClient.on('connected', () => {
+            logger.info('EventViewModel: WebSocket connected');
+        });
+
+        window.wsClient.on('disconnected', () => {
+            logger.debug('EventViewModel: WebSocket disconnected');
+        });
+    }
+```
+
+### Event Types Tracked
+
+All WebSocket messages are captured and displayed, including:
+- **cluster/update**: Node discovery and cluster membership changes
+- **cluster/event**: Arbitrary events from cluster members
+- **api/tasks**: Task execution notifications
+- **api/config**: Configuration updates
+- **node/***: Node-specific events
+- Any custom topics sent by SPORE nodes
+
+## Empty State
+
+When no events have been received, the view displays a helpful message:
+
+```604:632:spore-ui/public/scripts/components/EventComponent.js
+    showEmptyState() {
+        if (!this.isInitialized || !this.svg) return;
+        
+        const g = this.svg.select('g');
+        if (g.empty()) return;
+        
+        // Remove any existing message
+        g.selectAll('.empty-state').remove();
+        
+        // Account for the initial zoom transform (scale(1.4) translate(-200, -150))
+        // We need to place the text in the center of the transformed coordinate space
+        const transformX = -200;
+        const transformY = -150;
+        const scale = 1.4;
+        
+        // Calculate centered position in transformed space
+        const x = ((this.width / 2) - transformX) / scale;
+        const y = ((this.height / 2) - transformY) / scale;
+        
+        const emptyMsg = g.append('text')
+            .attr('class', 'empty-state')
+            .attr('x', x)
+            .attr('y', y)
+            .attr('text-anchor', 'middle')
+            .attr('font-size', '18px')
+            .attr('fill', 'var(--text-secondary)')
+            .attr('font-weight', '500')
+            .text('Waiting for websocket events...');
+    }
+```
+
+## Best Practices
+
+### Performance Considerations
+1. **Event Accumulation**: Events accumulate over time; consider clearing the view for long-running sessions
+2. **Many Events**: With hundreds of unique topics, the graph may become cluttered
+3. **Animation**: Rapid event bursts may cause overlapping animations
+
+### Usage Tips
+1. **Rearrange Regularly**: Use the rearrange button to clean up the layout after many events
+2. **Drag Center Node**: Move the entire graph to see different areas of the visualization
+3. **Zoom Out**: Zoom out to see the overall event pattern across the cluster
+4. **Interactive Exploration**: Hover over links to see event frequencies
+
+## Troubleshooting
+
+### No Events Showing
+- **Check WebSocket Connection**: Verify the gateway WebSocket is connected
+- **Check Node Activity**: Ensure SPORE nodes are actively sending events
+- **Browser Console**: Check for any JavaScript errors
+
+### Graph Not Updating
+- **Force Refresh**: Reload the page to reinitialize the WebSocket connection
+- **Check Gateway**: Verify the SPORE Gateway is running and accessible
+
+### Performance Issues
+- **Clear Events**: Reload the page to clear accumulated events
+- **Reduce Events**: Limit the event rate in your SPORE nodes
+- **Browser Settings**: Ensure hardware acceleration is enabled
+
+## Technical Details
+
+### Dependencies
+- **D3.js v7**: Force-directed graph simulation and SVG manipulation
+- **SPORE Gateway**: WebSocket connection to cluster event stream
+- **Component Framework**: Built on the SPORE UI component architecture
+
+### Browser Compatibility
+- **Modern Browsers**: Chrome, Firefox, Safari, Edge (latest versions)
+- **SVG Support**: Requires modern browser with full SVG support
+- **WebSocket Support**: Native WebSocket API required
+
+### View Structure
+
+```254:262:spore-ui/public/index.html
+        <div id="events-view" class="view-content">
+            <div class="view-section" style="height: 100%; display: flex; flex-direction: column;">
+                <div id="events-graph-container" style="flex: 1; min-height: 0;">
+                    <div class="loading">
+                        <div>Waiting for websocket events...</div>
+                    </div>
+                </div>
+            </div>
+        </div>
+```
+
+The Events view provides a unique perspective on cluster activity, making it easy to observe the flow of events through the SPORE system in real-time.
+

docs/README.md

@@ -0,0 +1,78 @@
+# SPORE UI Documentation
+
+This directory contains detailed documentation for the SPORE UI frontend application.
+
+## Documentation Index
+
+### Core Documentation
+
+- **[Framework](./FRAMEWORK_README.md)**: Component-based architecture, View Models, Event Bus, and framework conventions
+- **[Discovery](./DISCOVERY.md)**: Node discovery system and cluster management
+- **[Topology WebSocket Update](./TOPOLOGY_WEBSOCKET_UPDATE.md)**: Real-time topology visualization updates
+- **[Logging](./LOGGING.md)**: Logging system and debugging utilities
+
+### Feature Documentation
+
+- **[Events](./Events.md)**: Real-time WebSocket event visualization with interactive force-directed graph
+- **[Firmware Registry Integration](./FIRMWARE_REGISTRY_INTEGRATION.md)**: Integration with the firmware registry system
+
+## Feature Overview
+
+### Events Feature
+The Events feature provides real-time visualization of WebSocket events streaming through the SPORE cluster. It displays events as an interactive force-directed graph, showing the flow and relationships between different event topics.
+
+**Key Capabilities:**
+- Real-time event tracking and visualization
+- Interactive force-directed graph layout
+- Event counting and frequency visualization
+- Animated event flow visualization
+- Topic hierarchy display
+
+See [Events.md](./Events.md) for complete documentation.
+
+### Framework Architecture
+The SPORE UI uses a component-based architecture with:
+- View Models for state management
+- Components for UI rendering
+- Event Bus for pub/sub communication
+- API Client for backend integration
+
+See [FRAMEWORK_README.md](./FRAMEWORK_README.md) for architecture details.
+
+### Discovery System
+The discovery system enables automatic detection of SPORE nodes on the network, maintaining a real-time view of cluster members.
+
+See [DISCOVERY.md](./DISCOVERY.md) for implementation details.
+
+### Topology Visualization
+The topology view provides an interactive network graph showing relationships between cluster nodes in real-time.
+
+See [TOPOLOGY_WEBSOCKET_UPDATE.md](./TOPOLOGY_WEBSOCKET_UPDATE.md) for detailed documentation.
+
+## Quick Reference
+
+### Most Popular Pages
+1. [Framework Architecture](./FRAMEWORK_README.md) - Start here for understanding the codebase
+2. [Events Feature](./Events.md) - Real-time event visualization
+3. [Firmware Registry Integration](./FIRMWARE_REGISTRY_INTEGRATION.md) - Firmware management
+
+### Developer Resources
+- Component development: See [FRAMEWORK_README.md](./FRAMEWORK_README.md)
+- Debugging: See [LOGGING.md](./LOGGING.md)
+- Testing: See individual component documentation
+
+## Contributing
+
+When adding new features or documentation:
+1. Follow the existing documentation structure
+2. Include code examples and diagrams where helpful
+3. Update this README when adding new documentation files
+4. Maintain consistency with existing documentation style
+
+## Related Documentation
+
+For information about other SPORE components:
+- **SPORE Gateway**: See `spore-gateway/README.md`
+- **SPORE Registry**: See `spore-registry/README.md`
+- **SPORE Embedded**: See `spore/README.md`
+

index-standalone.js

@@ -70,14 +70,34 @@ udpServer.on('message', (msg, rinfo) => {
 
     console.log(`📨 UDP message received from ${sourceIp}:${sourcePort}: "${message}"`);
 
-    if (message.startsWith('CLUSTER_HEARTBEAT:')) {
+    // Extract topic by splitting on first ":"
-      // Handle heartbeat messages that update member list
+    const parts = message.split(':', 2);
-      const hostname = message.substring('CLUSTER_HEARTBEAT:'.length);
+    if (parts.length < 2) {
-      updateNodeFromHeartbeat(sourceIp, sourcePort, hostname);
+      console.log(`Invalid message format from ${sourceIp}:${sourcePort}: "${message}"`);
-    } else if (message.startsWith('NODE_UPDATE:')) {
+      return;
-      // Handle node update messages that provide detailed node info
+    }
-      handleNodeUpdate(sourceIp, message);
+
-    } else if (!message.startsWith('RAW:')) {
+    const topic = parts[0] + ':';
+    const payload = parts[1];
+
+    // Handler map for different UDP message types
+    const handlers = {
+      'cluster/heartbeat:': (payload, sourceIp, sourcePort) => {
+        updateNodeFromHeartbeat(sourceIp, sourcePort, payload);
+      },
+      'node/update:': (payload, sourceIp) => {
+        handleNodeUpdate(sourceIp, 'node/update:' + payload);
+      },
+      'raw:': () => {
+        // Ignore raw messages
+      }
+    };
+
+    // Look up and execute handler
+    const handler = handlers[topic];
+    if (handler) {
+      handler(payload, sourceIp, sourcePort);
+    } else {
       console.log(`Received unknown message from ${sourceIp}:${sourcePort}: "${message}"`);
     }
   } catch (error) {
@@ -919,7 +939,7 @@ function broadcastClusterUpdate() {
     // Get cluster members asynchronously
     getCurrentClusterMembers().then(members => {
       const clusterData = {
-        type: 'cluster_update',
+        topic: 'cluster/update',
         members: members,
         primaryNode: primaryNodeIp,
         totalNodes: discoveredNodes.size,
@@ -946,7 +966,7 @@ function broadcastNodeDiscovery(nodeIp, action) {
   if (wsClients.size === 0 || !wss) return;
 
   const eventData = {
-    type: 'node_discovery',
+    topic: 'node/discovery',
     action: action, // 'discovered' or 'stale'
     nodeIp: nodeIp,
     timestamp: new Date().toISOString()
@@ -1122,7 +1142,7 @@ const server = app.listen(PORT, '0.0.0.0', () => {
   initializeWebSocketServer(server);
   console.log('WebSocket server ready for real-time updates');
 
-  console.log('Waiting for CLUSTER_HEARTBEAT and NODE_UPDATE messages from SPORE nodes...');
+  console.log('Waiting for cluster/heartbeat and node/update messages from SPORE nodes...');
 });
 
 // Graceful shutdown handling

public/index.html

@@ -39,6 +39,18 @@
                     </svg>
                     Topology
                 </a>
+                <a href="/events" class="nav-tab" data-view="events">
+                    <svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" width="16" height="16" style="margin-right:6px;">
+                        <circle cx="5" cy="12" r="1.5" fill="currentColor"/>
+                        <circle cx="18" cy="6" r="1.5" fill="currentColor"/>
+                        <circle cx="18" cy="12" r="1.5" fill="currentColor"/>
+                        <circle cx="18" cy="18" r="1.5" fill="currentColor"/>
+                        <line x1="6.5" y1="12" x2="16.5" y2="6"/>
+                        <line x1="6.5" y1="12" x2="16.5" y2="12"/>
+                        <line x1="6.5" y1="12" x2="16.5" y2="18"/>
+                    </svg>
+                    Events
+                </a>
                 <a href="/monitoring" class="nav-tab" data-view="monitoring">
                     <svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" width="16" height="16" style="margin-right:6px;">
                         <path d="M3 12h3l2 7 4-14 3 10 2-6h4"/>
@@ -238,6 +250,16 @@
                 </div>
             </div>
         </div>
+
+        <div id="events-view" class="view-content">
+            <div class="view-section" style="height: 100%; display: flex; flex-direction: column;">
+                <div id="events-graph-container" style="flex: 1; min-height: 0;">
+                    <div class="loading">
+                        <div>Waiting for websocket events...</div>
+                    </div>
+                </div>
+            </div>
+        </div>
     </div>
 
     <script src="./vendor/d3.v7.min.js"></script>
@@ -264,6 +286,7 @@
     <script src="./scripts/components/ClusterStatusComponent.js"></script>
     <script src="./scripts/components/TopologyGraphComponent.js"></script>
     <script src="./scripts/components/MonitoringViewComponent.js"></script>
+    <script src="./scripts/components/EventComponent.js"></script>
     <script src="./scripts/components/ComponentsLoader.js"></script>
     <script src="./scripts/theme-manager.js"></script>
     <script src="./scripts/app.js"></script>

public/scripts/api-client.js

@@ -263,7 +263,8 @@ class WebSocketClient {
             try {
                 const data = JSON.parse(event.data);
                 logger.debug('WebSocket message received:', data);
-                logger.debug('WebSocket message type:', data.type);
+                const messageTopic = data.topic || data.type;
+                logger.debug('WebSocket message topic:', messageTopic);
                 this.emit('message', data);
                 this.handleMessage(data);
             } catch (error) {
@@ -288,21 +289,21 @@ class WebSocketClient {
     }
 
     handleMessage(data) {
-        switch (data.type) {
+        const messageTopic = data.topic || data.type;
-            case 'cluster_update':
+        
-                this.emit('clusterUpdate', data);
+        // Handler map for different WebSocket message types
-                break;
+        const handlers = {
-            case 'node_discovery':
+            'cluster/update': (data) => this.emit('clusterUpdate', data),
-                this.emit('nodeDiscovery', data);
+            'node/discovery': (data) => this.emit('nodeDiscovery', data),
-                break;
+            'firmware/upload/status': (data) => this.emit('firmwareUploadStatus', data),
-            case 'firmware_upload_status':
+            'rollout/progress': (data) => this.emit('rolloutProgress', data)
-                this.emit('firmwareUploadStatus', data);
+        };
-                break;
+        
-            case 'rollout_progress':
+        const handler = handlers[messageTopic];
-                this.emit('rolloutProgress', data);
+        if (handler) {
-                break;
+            handler(data);
-            default:
+        } else {
-                logger.debug('Unknown WebSocket message type:', data.type);
+            logger.debug('Unknown WebSocket message topic:', messageTopic);
         }
     }
 

public/scripts/app.js

@@ -17,7 +17,8 @@ document.addEventListener('DOMContentLoaded', async function() {
     const clusterFirmwareViewModel = new ClusterFirmwareViewModel();
     const topologyViewModel = new TopologyViewModel();
     const monitoringViewModel = new MonitoringViewModel();
-    logger.debug('App: View models created:', { clusterViewModel, firmwareViewModel, clusterFirmwareViewModel, topologyViewModel, monitoringViewModel });
+    const eventsViewModel = new EventViewModel();
+    logger.debug('App: View models created:', { clusterViewModel, firmwareViewModel, clusterFirmwareViewModel, topologyViewModel, monitoringViewModel, eventsViewModel });
     
     // Connect firmware view model to cluster data
     clusterViewModel.subscribe('members', (members) => {
@@ -65,6 +66,7 @@ document.addEventListener('DOMContentLoaded', async function() {
     app.registerRoute('topology', TopologyGraphComponent, 'topology-view', topologyViewModel);
     app.registerRoute('firmware', FirmwareViewComponent, 'firmware-view', firmwareViewModel);
     app.registerRoute('monitoring', MonitoringViewComponent, 'monitoring-view', monitoringViewModel);
+    app.registerRoute('events', EventComponent, 'events-view', eventsViewModel);
     logger.debug('App: Routes registered and components pre-initialized');
     
     // Initialize cluster status component for header badge

public/scripts/components/TopologyGraphComponent.js

@@ -99,12 +99,10 @@ class TopologyGraphComponent extends Component {
             .map(([k, v]) => `<span class=\"label-chip\">${this.escapeHtml(String(k))}: ${this.escapeHtml(String(v))}</span>`)
             .join('');
         
-        // Add hint for non-primary nodes
+        // Add hint for node interactions
-        let hint = '';
+        let hint = '<div style="margin-top: 8px; font-size: 11px; color: rgba(255, 255, 255, 0.7); text-align: center;">💡 Click to set as API Node & toggle view</div>';
-        if (nodeData && !nodeData.isPrimary) {
+        if (nodeData && nodeData.isPrimary) {
-            hint = '<div style="margin-top: 8px; font-size: 11px; color: rgba(255, 255, 255, 0.7); text-align: center;">💡 Click to switch to primary & view details</div>';
+            hint = '<div style="margin-top: 8px; font-size: 11px; color: rgba(255, 215, 0, 0.9); text-align: center;">⭐ API Node - Click to toggle view</div>';
-        } else if (nodeData && nodeData.isPrimary) {
-            hint = '<div style="margin-top: 8px; font-size: 11px; color: rgba(255, 215, 0, 0.9); text-align: center;">⭐ Primary Node - Click to view details</div>';
         }
         
         this.tooltipEl.innerHTML = `<div class=\"member-labels\">${chips}</div>${hint}`;
@@ -622,30 +620,19 @@ class TopologyGraphComponent extends Component {
             .attr('stroke', d => d.isPrimary ? '#FFD700' : '#fff')
             .attr('stroke-width', d => d.isPrimary ? 3 : 2);
 
-        // Status indicator
+        // Status indicator - removed
-        nodeEnter.append('circle')
-            .attr('r', 3)
-            .attr('fill', d => this.getStatusIndicatorColor(d.status))
-            .attr('cx', -8)
-            .attr('cy', -8);
         
         // Primary node badge
         const primaryBadge = nodeEnter.filter(d => d.isPrimary)
             .append('g')
             .attr('class', 'primary-badge')
-            .attr('transform', 'translate(8, -8)');
+            .attr('transform', 'translate(0, 0)');
-        
-        primaryBadge.append('circle')
-            .attr('r', 8)
-            .attr('fill', '#FFD700')
-            .attr('stroke', '#FFF')
-            .attr('stroke-width', 1);
         
         primaryBadge.append('text')
-            .text('P')
+            .text('A')
             .attr('text-anchor', 'middle')
             .attr('dominant-baseline', 'central')
-            .attr('font-size', '10px')
+            .attr('font-size', '12px')
             .attr('font-weight', 'bold')
             .attr('fill', '#000');
 
@@ -701,10 +688,7 @@ class TopologyGraphComponent extends Component {
             .attr('stroke', d => d.isPrimary ? '#FFD700' : '#fff')
             .attr('stroke-width', d => d.isPrimary ? 3 : 2);
 
-        nodeMerge.select('circle:nth-child(2)')
+        // Update status indicator - removed
-            .transition()
-            .duration(300)
-            .attr('fill', d => this.getStatusIndicatorColor(d.status));
 
         nodeMerge.select('.hostname-text')
             .text(d => d.hostname.length > 15 ? d.hostname.substring(0, 15) + '...' : d.hostname);
@@ -735,19 +719,13 @@ class TopologyGraphComponent extends Component {
                 if (nodeGroup.select('.primary-badge').empty()) {
                     const badge = nodeGroup.append('g')
                         .attr('class', 'primary-badge')
-                        .attr('transform', 'translate(8, -8)');
+                        .attr('transform', 'translate(0, 0)');
-                    
-                    badge.append('circle')
-                        .attr('r', 8)
-                        .attr('fill', '#FFD700')
-                        .attr('stroke', '#FFF')
-                        .attr('stroke-width', 1);
                     
                     badge.append('text')
-                        .text('P')
+                        .text('A')
                         .attr('text-anchor', 'middle')
                         .attr('dominant-baseline', 'central')
-                        .attr('font-size', '10px')
+                        .attr('font-size', '12px')
                         .attr('font-weight', 'bold')
                         .attr('fill', '#000');
                 }
@@ -769,59 +747,39 @@ class TopologyGraphComponent extends Component {
             .on('click', async (event, d) => {
                 event.stopPropagation();
                 
-                // Always open drawer/details for the clicked node
+                // Check if we're toggling back to mesh (clicking same center node in star mode)
-                this.viewModel.selectNode(d.id);
+                const currentMode = this.viewModel.get('topologyMode');
-                this.updateSelection(d.id);
+                const currentCenter = this.viewModel.get('starCenterNode');
-                if (this.isDesktop()) {
+                const togglingToMesh = currentMode === 'star' && currentCenter === d.ip;
-                    this.openDrawerForNode(d);
-                } else {
-                    this.showMemberCardOverlay(d);
-                }
                 
-                // If clicking on non-primary node, also switch it to primary
+                // Toggle topology mode - switch between mesh and star
+                await this.viewModel.toggleTopologyMode(d.ip);
+                
+                // Also switch to this node as primary (if not already)
                 if (!d.isPrimary) {
                     try {
-                        // Visual feedback - highlight the clicked node
-                        d3.select(event.currentTarget).select('circle')
-                            .transition()
-                            .duration(200)
-                            .attr('stroke-width', 4)
-                            .attr('stroke', '#FFD700');
-                        
                         logger.info(`TopologyGraphComponent: Switching primary to ${d.ip}`);
-                        
-                        // Switch to this node as primary
                         await this.viewModel.switchToPrimaryNode(d.ip);
-                        
-                        // Show success feedback briefly
-                        this.showTooltip({
-                            ...d,
-                            hostname: `✓ Switched to ${d.hostname}`
-                        }, event.pageX, event.pageY);
-                        
-                        setTimeout(() => {
-                            this.hideTooltip();
-                        }, 1500);
-                        
                     } catch (error) {
                         logger.error('TopologyGraphComponent: Failed to switch primary:', error);
-                        
+                    }
-                        // Show error feedback
+                }
-                        this.showTooltip({
+                
-                            ...d,
+                // Open or close drawer based on mode toggle
-                            hostname: `✗ Failed: ${error.message}`
+                if (togglingToMesh) {
-                        }, event.pageX, event.pageY);
+                    // Switching back to mesh - close drawer
-                        
+                    this.viewModel.clearSelection();
-                        setTimeout(() => {
+                    if (this.isDesktop()) {
-                            this.hideTooltip();
+                        this.closeDrawer();
-                        }, 3000);
+                    }
-                        
+                } else {
-                        // Revert visual feedback
+                    // Switching to star or changing center - open drawer
-                        d3.select(event.currentTarget).select('circle')
+                    this.viewModel.selectNode(d.id);
-                            .transition()
+                    this.updateSelection(d.id);
-                            .duration(200)
+                    if (this.isDesktop()) {
-                            .attr('stroke-width', 2)
+                        this.openDrawerForNode(d);
-                            .attr('stroke', '#fff');
+                    } else {
+                        this.showMemberCardOverlay(d);
                     }
                 }
             })
@@ -843,6 +801,20 @@ class TopologyGraphComponent extends Component {
     }
 
     updateLinkLabels(svgGroup, links) {
+        const topologyMode = this.viewModel.get('topologyMode') || 'mesh';
+        
+        // Only show latency labels in star mode
+        if (topologyMode !== 'star') {
+            // Clear any existing labels in mesh mode
+            const linkLabelGroup = svgGroup.select('.link-label-group');
+            if (!linkLabelGroup.empty()) {
+                linkLabelGroup.selectAll('text').remove();
+            }
+            this.linkLabelSelection = null;
+            return;
+        }
+        
+        // Star mode - show latency labels
         // Get or create link label group
         let linkLabelGroup = svgGroup.select('.link-label-group');
         if (linkLabelGroup.empty()) {
@@ -1005,10 +977,8 @@ class TopologyGraphComponent extends Component {
     }
 
     addLegend(svgGroup) {
-        // Only add legend if it doesn't exist
+        // Remove existing legend to recreate with current mode
-        if (!svgGroup.select('.legend-group').empty()) {
+        svgGroup.select('.legend-group').remove();
-            return;
-        }
 
         const legend = svgGroup.append('g')
             .attr('class', 'legend-group graph-element')
@@ -1111,7 +1081,7 @@ class TopologyGraphComponent extends Component {
             .attr('stroke-width', 1);
         
         primaryBadge.append('text')
-            .text('P')
+            .text('A')
             .attr('text-anchor', 'middle')
             .attr('dominant-baseline', 'central')
             .attr('font-size', '8px')
@@ -1125,16 +1095,20 @@ class TopologyGraphComponent extends Component {
             .attr('font-size', '12px')
             .attr('fill', '#ecf0f1');
 
-        // Star topology info
+        // Topology mode info
+        const topologyMode = this.viewModel.get('topologyMode') || 'mesh';
+        const modeText = topologyMode === 'mesh' ? 'Full Mesh' : 'Star Topology';
+        const modeDesc = topologyMode === 'mesh' ? '(All to All)' : '(Center to Others)';
+        
         topologyLegend.append('text')
-            .text('Star Topology')
+            .text(modeText)
             .attr('x', 0)
             .attr('y', 50)
             .attr('font-size', '12px')
             .attr('fill', '#ecf0f1');
 
         topologyLegend.append('text')
-            .text('(Primary to Members)')
+            .text(modeDesc)
             .attr('x', 0)
             .attr('y', 65)
             .attr('font-size', '10px')
@@ -1288,7 +1262,9 @@ class TopologyGraphComponent extends Component {
         // Get or create animation group inside the main transformed group
         let animGroup = mainGroup.select('.discovery-animation-group');
         if (animGroup.empty()) {
-            animGroup = mainGroup.append('g').attr('class', 'discovery-animation-group');
+            animGroup = mainGroup.append('g')
+                .attr('class', 'discovery-animation-group')
+                .style('pointer-events', 'none'); // Make entire animation group non-interactive
         }
         
         // Emit a dot to each other node
@@ -1300,20 +1276,38 @@ class TopologyGraphComponent extends Component {
     }
 
     animateDiscoveryDot(animGroup, sourceNode, targetNode) {
-        // Create a small circle at the source node
+        // Calculate spawn position outside the node boundary
+        const nodeRadius = this.getNodeRadius(sourceNode.status);
+        const spawnDistance = nodeRadius + 8; // Spawn 8px outside the node
+        
+        // Calculate direction from source to target
+        const dx = targetNode.x - sourceNode.x;
+        const dy = targetNode.y - sourceNode.y;
+        const distance = Math.sqrt(dx * dx + dy * dy);
+        
+        // Normalize direction and spawn outside the node
+        const normalizedX = dx / distance;
+        const normalizedY = dy / distance;
+        const spawnX = sourceNode.x + normalizedX * spawnDistance;
+        const spawnY = sourceNode.y + normalizedY * spawnDistance;
+        
+        // Create a small circle outside the source node
         const dot = animGroup.append('circle')
             .attr('class', 'discovery-dot')
             .attr('r', 6)
-            .attr('cx', sourceNode.x)
+            .attr('cx', spawnX)
-            .attr('cy', sourceNode.y)
+            .attr('cy', spawnY)
             .attr('fill', '#FFD700')
             .attr('opacity', 1)
             .attr('stroke', '#FFF')
-            .attr('stroke-width', 2);
+            .attr('stroke-width', 2)
+            .style('pointer-events', 'none'); // Make dots non-interactive
         
-        // Trigger response dot early (after 70% of the journey)
+        // Trigger response dot early (after 70% of the journey) - only if target node is active
         setTimeout(() => {
-            this.animateResponseDot(animGroup, targetNode, sourceNode);
+            if (targetNode.status && targetNode.status.toUpperCase() === 'ACTIVE') {
+                this.animateResponseDot(animGroup, targetNode, sourceNode);
+            }
         }, 1050); // 1500ms * 0.7 = 1050ms
         
         // Animate the dot to the target node
@@ -1327,23 +1321,51 @@ class TopologyGraphComponent extends Component {
     }
 
     animateResponseDot(animGroup, sourceNode, targetNode) {
-        // Create a response dot at the target (now source) node
+        // Calculate spawn position outside the target node boundary
+        const nodeRadius = this.getNodeRadius(sourceNode.status);
+        const spawnDistance = nodeRadius + 8; // Spawn 8px outside the node
+        
+        // Calculate direction from target back to original source
+        const dx = targetNode.x - sourceNode.x;
+        const dy = targetNode.y - sourceNode.y;
+        const distance = Math.sqrt(dx * dx + dy * dy);
+        
+        // Normalize direction and spawn outside the node
+        const normalizedX = dx / distance;
+        const normalizedY = dy / distance;
+        const spawnX = sourceNode.x + normalizedX * spawnDistance;
+        const spawnY = sourceNode.y + normalizedY * spawnDistance;
+        
+        // Calculate target position outside the original source node
+        const targetNodeRadius = this.getNodeRadius(targetNode.status);
+        const targetDistance = targetNodeRadius + 8; // Stop 8px outside the target node
+        
+        // Calculate direction from source back to target
+        const targetDx = sourceNode.x - targetNode.x;
+        const targetDy = sourceNode.y - targetNode.y;
+        const targetNormalizedX = targetDx / distance;
+        const targetNormalizedY = targetDy / distance;
+        const targetX = targetNode.x + targetNormalizedX * targetDistance;
+        const targetY = targetNode.y + targetNormalizedY * targetDistance;
+        
+        // Create a response dot outside the target (now source) node
         const responseDot = animGroup.append('circle')
             .attr('class', 'discovery-dot-response')
             .attr('r', 5)
-            .attr('cx', sourceNode.x)
+            .attr('cx', spawnX)
-            .attr('cy', sourceNode.y)
+            .attr('cy', spawnY)
-            .attr('fill', '#4CAF50')
+            .attr('fill', '#2196F3')
             .attr('opacity', 1)
             .attr('stroke', '#FFF')
-            .attr('stroke-width', 2);
+            .attr('stroke-width', 2)
+            .style('pointer-events', 'none'); // Make dots non-interactive
         
-        // Animate back to the original source
+        // Animate back to outside the original source node
         responseDot.transition()
             .duration(1000)
             .ease(d3.easeCubicInOut)
-            .attr('cx', targetNode.x)
+            .attr('cx', targetX)
-            .attr('cy', targetNode.y)
+            .attr('cy', targetY)
             .attr('opacity', 0)
             .remove();
     }

public/scripts/view-models.js

@@ -584,7 +584,9 @@ class TopologyViewModel extends ViewModel {
             isLoading: false,
             error: null,
             lastUpdateTime: null,
-            selectedNode: null
+            selectedNode: null,
+            topologyMode: 'mesh', // 'mesh' or 'star'
+            starCenterNode: null // IP of the center node in star mode
         });
     }
 
@@ -692,7 +694,7 @@ class TopologyViewModel extends ViewModel {
     }
 
     // Build enhanced graph data with actual node connections
-    // Creates a star topology with the primary node at the center
+    // Creates either a mesh topology (all nodes connected) or star topology (center node to all others)
     async buildEnhancedGraphData(members, primaryNode) {
         const nodes = [];
         const links = [];
@@ -730,32 +732,53 @@ class TopologyViewModel extends ViewModel {
             }
         });
         
-        // Build links - create a star topology with primary node at center
+        // Build links based on topology mode
-        // Only create links from the primary node to each member
+        const topologyMode = this.get('topologyMode') || 'mesh';
-        // The cluster data comes from the primary, so it only knows about its direct connections
+        
-        if (primaryNode) {
+        if (topologyMode === 'mesh') {
-            logger.debug(`TopologyViewModel: Creating star topology with primary ${primaryNode}`);
+            // Full mesh - connect all nodes to all other nodes
-            nodes.forEach(node => {
+            logger.debug('TopologyViewModel: Creating full mesh topology');
-                // Create a link from primary to each non-primary node
+            for (let i = 0; i < nodes.length; i++) {
-                if (node.ip !== primaryNode) {
+                for (let j = i + 1; j < nodes.length; j++) {
-                    const member = members.find(m => m.ip === node.ip);
+                    const sourceNode = nodes[i];
-                    const latency = member?.latency || this.estimateLatency(node, { ip: primaryNode });
+                    const targetNode = nodes[j];
-                    
-                    logger.debug(`TopologyViewModel: Creating link from ${primaryNode} to ${node.ip} (latency: ${latency}ms)`);
                     
                     links.push({
-                        source: primaryNode,
+                        source: sourceNode.id,
-                        target: node.id,
+                        target: targetNode.id,
-                        latency: latency,
+                        latency: this.estimateLatency(sourceNode, targetNode),
-                        sourceNode: nodes.find(n => n.ip === primaryNode),
+                        sourceNode: sourceNode,
-                        targetNode: node,
+                        targetNode: targetNode,
-                        bidirectional: false  // Primary -> Member is directional
+                        bidirectional: true
                     });
                 }
-            });
+            }
-            logger.debug(`TopologyViewModel: Created ${links.length} links from primary node`);
+            logger.debug(`TopologyViewModel: Created ${links.length} links in mesh topology`);
-        } else {
+        } else if (topologyMode === 'star') {
-            logger.warn('TopologyViewModel: No primary node specified, cannot create links');
+            // Star topology - center node connects to all others
+            const centerNode = this.get('starCenterNode') || primaryNode;
+            
+            if (centerNode) {
+                logger.debug(`TopologyViewModel: Creating star topology with center ${centerNode}`);
+                nodes.forEach(node => {
+                    if (node.ip !== centerNode) {
+                        const member = members.find(m => m.ip === node.ip);
+                        const latency = member?.latency || this.estimateLatency(node, { ip: centerNode });
+                        
+                        links.push({
+                            source: centerNode,
+                            target: node.id,
+                            latency: latency,
+                            sourceNode: nodes.find(n => n.ip === centerNode),
+                            targetNode: node,
+                            bidirectional: false
+                        });
+                    }
+                });
+                logger.debug(`TopologyViewModel: Created ${links.length} links from center node`);
+            } else {
+                logger.warn('TopologyViewModel: No center node specified for star topology');
+            }
         }
         
         return { nodes, links };
@@ -803,6 +826,36 @@ class TopologyViewModel extends ViewModel {
             throw error;
         }
     }
+
+    // Toggle topology mode or set star mode with specific center node
+    async setTopologyMode(mode, centerNodeIp = null) {
+        logger.debug(`TopologyViewModel: Setting topology mode to ${mode}`, centerNodeIp ? `with center ${centerNodeIp}` : '');
+        
+        this.setMultiple({
+            topologyMode: mode,
+            starCenterNode: centerNodeIp
+        });
+        
+        // Rebuild the graph with new topology
+        await this.updateNetworkTopology();
+    }
+
+    // Toggle between mesh and star modes
+    async toggleTopologyMode(nodeIp) {
+        const currentMode = this.get('topologyMode');
+        const currentCenter = this.get('starCenterNode');
+        
+        if (currentMode === 'mesh') {
+            // Switch to star mode with this node as center
+            await this.setTopologyMode('star', nodeIp);
+        } else if (currentMode === 'star' && currentCenter === nodeIp) {
+            // Clicking same center node - switch back to mesh
+            await this.setTopologyMode('mesh', null);
+        } else {
+            // Clicking different node - change star center
+            await this.setTopologyMode('star', nodeIp);
+        }
+    }
 }
 
 // Monitoring View Model for cluster resource monitoring
@@ -1182,4 +1235,200 @@ class WiFiConfigViewModel extends ViewModel {
     }
 }
 
-window.WiFiConfigViewModel = WiFiConfigViewModel; 
+window.WiFiConfigViewModel = WiFiConfigViewModel;
+
+// Events View Model for websocket event visualization
+class EventViewModel extends ViewModel {
+    constructor() {
+        super();
+        this.setMultiple({
+            events: new Map(), // Map of topic -> { parts: [], count: number, lastSeen: timestamp }
+            allMessages: [], // Array of all messages for live viewing
+            allMessagesCounter: 0, // Counter to trigger updates
+            selectedTopic: null, // Currently selected topic for drawer
+            isLoading: false,
+            error: null,
+            lastUpdateTime: null
+        });
+        
+        // Set up WebSocket listeners for real-time updates
+        this.setupWebSocketListeners();
+    }
+
+    // Set up WebSocket event listeners
+    setupWebSocketListeners() {
+        if (!window.wsClient) {
+            // Retry after a short delay to allow wsClient to initialize
+            setTimeout(() => this.setupWebSocketListeners(), 1000);
+            return;
+        }
+
+        // Listen for all websocket messages
+        window.wsClient.on('message', (data) => {
+            const topic = data.topic || data.type;
+            
+            if (topic) {
+                // Store the full message
+                const allMessages = this.get('allMessages') || [];
+                const newMessage = {
+                    ...data,
+                    topic: topic,
+                    timestamp: new Date().toISOString(),
+                    id: `${topic}-${Date.now()}-${Math.random()}`
+                };
+                allMessages.push(newMessage);
+                
+                // Keep only the last 1000 messages to prevent memory issues
+                const maxMessages = 1000;
+                if (allMessages.length > maxMessages) {
+                    allMessages.splice(0, allMessages.length - maxMessages);
+                }
+                
+                // Update messages and trigger change notification
+                this.set('allMessages', allMessages);
+                this.set('allMessagesCounter', this.get('allMessagesCounter') + 1);
+                
+                this.addTopic(topic, data);
+            }
+        });
+
+        // Listen for connection status changes
+        window.wsClient.on('connected', () => {
+            logger.info('EventViewModel: WebSocket connected');
+        });
+
+        window.wsClient.on('disconnected', () => {
+            logger.debug('EventViewModel: WebSocket disconnected');
+        });
+    }
+    
+    // Get messages for a specific topic
+    getMessagesForTopic(topic) {
+        const allMessages = this.get('allMessages') || [];
+        return allMessages.filter(msg => {
+            // Handle nested events from cluster/event
+            if (msg.topic === 'cluster/event' && msg.data) {
+                try {
+                    const parsedData = typeof msg.data === 'string' ? JSON.parse(msg.data) : msg.data;
+                    if (parsedData && parsedData.event) {
+                        const fullTopic = `${msg.topic}/${parsedData.event}`;
+                        return fullTopic === topic;
+                    }
+                } catch (e) {
+                    // If parsing fails, just use the original topic
+                }
+            }
+            return msg.topic === topic;
+        });
+    }
+    
+    // Set the selected topic for drawer
+    setSelectedTopic(topic) {
+        this.set('selectedTopic', topic);
+    }
+    
+    // Clear selected topic
+    clearSelectedTopic() {
+        this.set('selectedTopic', null);
+    }
+
+    // Add a topic (parsed by "/" separator)
+    addTopic(topic, data = null) {
+        // Get current events as a new Map to ensure change detection
+        const events = new Map(this.get('events'));
+        
+        // Handle nested events from cluster/event
+        let fullTopic = topic;
+        if (topic === 'cluster/event' && data && data.data) {
+            try {
+                const parsedData = typeof data.data === 'string' ? JSON.parse(data.data) : data.data;
+                if (parsedData && parsedData.event) {
+                    // Create nested topic chain: cluster/event/api/neopattern
+                    fullTopic = `${topic}/${parsedData.event}`;
+                }
+            } catch (e) {
+                // If parsing fails, just use the original topic
+            }
+        }
+        
+        const parts = fullTopic.split('/').filter(p => p);
+        
+        if (events.has(fullTopic)) {
+            // Update existing event - create new object to ensure change detection
+            const existing = events.get(fullTopic);
+            events.set(fullTopic, {
+                topic: existing.topic,
+                parts: existing.parts,
+                count: existing.count + 1,
+                firstSeen: existing.firstSeen,
+                lastSeen: new Date().toISOString(),
+                lastData: data
+            });
+        } else {
+            // Create new event entry
+            events.set(fullTopic, {
+                topic: fullTopic,
+                parts: parts,
+                count: 1,
+                firstSeen: new Date().toISOString(),
+                lastSeen: new Date().toISOString(),
+                lastData: data
+            });
+        }
+        
+        // Use set to trigger change notification
+        this.set('events', events);
+        this.set('lastUpdateTime', new Date().toISOString());
+    }
+
+    // Get all topic parts (unique segments after splitting by "/")
+    getTopicParts() {
+        const events = this.get('events');
+        const allParts = new Set();
+        
+        for (const [topic, data] of events) {
+            data.parts.forEach(part => allParts.add(part));
+        }
+        
+        return Array.from(allParts).map(part => {
+            // Count how many events contain this part
+            let count = 0;
+            for (const [topic, data] of events) {
+                if (data.parts.includes(part)) {
+                    count += data.count;
+                }
+            }
+            
+            return { part, count };
+        });
+    }
+
+    // Clear all events
+    clearTopics() {
+        this.set('events', new Map());
+        this.set('lastUpdateTime', new Date().toISOString());
+    }
+
+    // Get connections between topic parts (for graph edges)
+    getTopicConnections() {
+        const topics = this.get('topics');
+        const connections = [];
+        
+        for (const [topic, data] of topics) {
+            const parts = data.parts;
+            // Create connections between adjacent parts
+            for (let i = 0; i < parts.length - 1; i++) {
+                connections.push({
+                    source: parts[i],
+                    target: parts[i + 1],
+                    topic: topic,
+                    count: data.count
+                });
+            }
+        }
+        
+        return connections;
+    }
+}
+
+window.EventViewModel = EventViewModel; 

public/styles/main.css

@@ -3,6 +3,127 @@
     transform: rotate(-90deg);
     transform-origin: 50% 50%;
 }
+
+/* ========================================
+   MESSAGE LIST STYLES FOR EVENTS DRAWER
+   ======================================== */
+
+.topic-messages-container {
+    height: 100%;
+    overflow-y: auto;
+    padding: 16px;
+}
+
+.message-list-header {
+    margin-bottom: 16px;
+    padding-bottom: 16px;
+    border-bottom: 1px solid var(--border-color, rgba(255, 255, 255, 0.1));
+}
+
+.message-list-header-title {
+    color: var(--text-primary);
+    font-weight: 600;
+    margin-bottom: 8px;
+}
+
+.message-list-header-subtitle {
+    color: var(--text-secondary);
+    font-size: 0.9em;
+}
+
+.topic-code {
+    background: var(--card-background);
+    padding: 2px 6px;
+    border-radius: 4px;
+}
+
+.message-item {
+    margin-bottom: 12px;
+    padding: 12px;
+    background: var(--card-background, rgba(30, 30, 30, 0.5));
+    border-left: 3px solid var(--primary-color, #3498db);
+    border-radius: 4px;
+}
+
+.message-item-header {
+    display: flex;
+    justify-content: space-between;
+    align-items: center;
+    margin-bottom: 8px;
+}
+
+.message-id {
+    color: var(--text-secondary);
+    font-size: 0.85em;
+}
+
+.message-timestamp {
+    color: var(--text-secondary);
+    font-size: 0.85em;
+}
+
+.message-content {
+    margin: 0;
+    white-space: pre-wrap;
+    word-break: break-all;
+    font-family: monospace;
+    font-size: 0.9em;
+    color: var(--text-primary);
+}
+
+.empty-message-state {
+    text-align: center;
+    padding: 32px;
+    color: var(--text-secondary);
+}
+
+.topic-multi-indicator {
+    color: var(--text-secondary);
+}
+
+/* Message animations - only for new messages */
+.message-item-new {
+    animation: messageSlideIn 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94);
+}
+
+@keyframes messageSlideIn {
+    0% {
+        opacity: 0;
+        transform: translateY(-15px) scale(0.98);
+        max-height: 0;
+        margin-bottom: 0;
+        padding-top: 0;
+        padding-bottom: 0;
+    }
+    50% {
+        opacity: 0.8;
+    }
+    100% {
+        opacity: 1;
+        transform: translateY(0) scale(1);
+        max-height: 1000px;
+        margin-bottom: 12px;
+        padding-top: 12px;
+        padding-bottom: 12px;
+    }
+}
+
+/* Node highlight animation - only for selected nodes */
+.node-highlight.highlighted {
+    animation: nodePulse 2s ease-in-out infinite;
+    filter: drop-shadow(0 0 3px rgba(255, 215, 0, 0.6));
+}
+
+@keyframes nodePulse {
+    0%, 100% {
+        opacity: 1;
+        transform: scale(1);
+    }
+    50% {
+        opacity: 0.6;
+        transform: scale(1.05);
+    }
+}
 * {
     margin: 0;
     padding: 0;
@@ -559,11 +680,12 @@ p {
 }
 
 /* Topology graph node interactions */
-#topology-graph-container .node {
+#topology-graph-container .node, #events-graph-container .node {
     cursor: pointer;
 }
 
-#topology-graph-container .node:hover circle:first-child {
+#topology-graph-container .node:hover circle:first-child,
+#events-graph-container .node:hover circle:first-child {
     filter: brightness(1.2);
 }
 
@@ -4335,7 +4457,7 @@ select.param-input:focus {
     width: 100%;  /* Use full container width */
 }
 
-#topology-graph-container {
+#topology-graph-container, #events-graph-container {
     background: var(--bg-tertiary);
     border-radius: 12px;
     height: 100%;
@@ -4351,24 +4473,27 @@ select.param-input:focus {
     max-height: 100%;  /* Ensure it doesn't exceed parent height */
 }
 
-#topology-graph-container svg {
+#topology-graph-container svg, #events-graph-container svg {
     width: 100%;
     height: 100%;
 }
 
 #topology-graph-container .loading,
 #topology-graph-container .error,
-#topology-graph-container .no-data {
+#topology-graph-container .no-data,
+#events-graph-container .loading,
+#events-graph-container .error,
+#events-graph-container .no-data {
     text-align: center;
     color: var(--text-tertiary);
     font-size: 1.1rem;
 }
 
-#topology-graph-container .error {
+#topology-graph-container .error, #events-graph-container .error {
     color: var(--accent-error);
 }
 
-#topology-graph-container .no-data {
+#topology-graph-container .no-data, #events-graph-container .no-data {
     color: rgba(255, 255, 255, 0.5);
 }