feat: live topology view through websocket updates

public/scripts/components/TopologyGraphComponent.js

@@ -1025,13 +1025,22 @@ class TopologyGraphComponent extends Component {
             .attr('stroke', d => d.id === selectedNodeId ? '#2196F3' : '#fff');
     }
 
-    // NOTE: This method is deprecated and should not be used
-    // The topology graph is now entirely websocket-driven
-    // Refresh button was removed and all updates come from websocket events
     handleRefresh() {
-        logger.warn('TopologyGraphComponent: handleRefresh called - this method is deprecated');
-        logger.warn('TopologyGraphComponent: Topology updates should come from websocket events only');
-        // No-op - do not make API calls
+        logger.debug('TopologyGraphComponent: handleRefresh called');
+        
+        if (!this.isInitialized) {
+            logger.debug('TopologyGraphComponent: Component not yet initialized, ensuring initialization...');
+            this.ensureInitialized().then(() => {
+                // Refresh after initialization
+                this.viewModel.updateNetworkTopology();
+            }).catch(error => {
+                logger.error('TopologyGraphComponent: Failed to initialize for refresh:', error);
+            });
+            return;
+        }
+        
+        logger.debug('TopologyGraphComponent: Calling updateNetworkTopology...');
+        this.viewModel.updateNetworkTopology();
     }
 
     handleLoadingState(isLoading) {

public/scripts/view-models.js

@@ -622,21 +622,26 @@ class TopologyViewModel extends ViewModel {
         window.wsClient.on('nodeDiscovery', (data) => {
             logger.debug('TopologyViewModel: Received WebSocket node discovery event:', data);
 
-            // Node discovery events are logged but no action needed
-            // The subsequent clusterUpdate event will provide the updated member list
-            // and update the topology through the websocket data flow
             if (data.action === 'discovered') {
-                logger.debug('TopologyViewModel: Node discovered, waiting for clusterUpdate event');
+                // A new node was discovered - trigger a topology update
+                setTimeout(() => {
+                    this.updateNetworkTopology();
+                }, 500);
             } else if (data.action === 'stale') {
-                logger.debug('TopologyViewModel: Node became stale, waiting for clusterUpdate event');
+                // A node became stale - trigger a topology update
+                setTimeout(() => {
+                    this.updateNetworkTopology();
+                }, 500);
             }
         });
 
         // Listen for connection status changes
         window.wsClient.on('connected', () => {
             logger.debug('TopologyViewModel: WebSocket connected');
-            // Connection restored - the server will send a clusterUpdate event shortly
-            // No need to make an API call, just wait for the websocket data
+            // Trigger an immediate update when connection is restored
+            setTimeout(() => {
+                this.updateNetworkTopology();
+            }, 1000);
         });
 
         window.wsClient.on('disconnected', () => {
@@ -645,11 +650,9 @@ class TopologyViewModel extends ViewModel {
     }
 
     // Update network topology data
-    // NOTE: This method makes an API call and should only be used for initial load
-    // All subsequent updates should come from websocket events (clusterUpdate)
     async updateNetworkTopology() {
         try {
-            logger.debug('TopologyViewModel: updateNetworkTopology called (API call)');
+            logger.debug('TopologyViewModel: updateNetworkTopology called');
             
             this.set('isLoading', true);
             this.set('error', null);
@@ -682,6 +685,7 @@ class TopologyViewModel extends ViewModel {
     async buildEnhancedGraphData(members) {
         const nodes = [];
         const links = [];
+        const nodeConnections = new Map();
         
         // Get existing nodes to preserve their positions
         const existingNodes = this.get('nodes') || [];
@@ -714,22 +718,39 @@ class TopologyViewModel extends ViewModel {
             }
         });
         
-        // Build links - create a mesh topology from the members data
-        // All connections are inferred from the cluster membership
-        // No additional API calls needed - all data comes from websocket updates
-        for (let i = 0; i < nodes.length; i++) {
-            for (let j = i + 1; j < nodes.length; j++) {
-                const sourceNode = nodes[i];
-                const targetNode = nodes[j];
+        // Try to get cluster members from each node to build actual connections
+        for (const node of nodes) {
+            try {
+                const nodeResponse = await window.apiClient.getClusterMembersFromNode(node.ip);
+                if (nodeResponse && nodeResponse.members) {
+                    nodeConnections.set(node.ip, nodeResponse.members);
+                }
+            } catch (error) {
+                console.warn(`Failed to get cluster members from node ${node.ip}:`, error);
+                // Continue with other nodes
+            }
+        }
         
-                // Use the latency from the member data if available, otherwise estimate
-                const sourceMember = members.find(m => m.ip === sourceNode.ip);
-                const targetMember = members.find(m => m.ip === targetNode.ip);
-                const latency = targetMember?.latency || sourceMember?.latency || this.estimateLatency(sourceNode, targetNode);
+        // Build links based on actual connections
+        for (const [sourceIp, sourceMembers] of nodeConnections) {
+            for (const targetMember of sourceMembers) {
+                if (targetMember.ip && targetMember.ip !== sourceIp) {
+                    // Check if we already have this link
+                    const existingLink = links.find(link => 
+                        (link.source === sourceIp && link.target === targetMember.ip) ||
+                        (link.source === targetMember.ip && link.target === sourceIp)
+                    );
+                    
+                    if (!existingLink) {
+                        const sourceNode = nodes.find(n => n.id === sourceIp);
+                        const targetNode = nodes.find(n => n.id === targetMember.ip);
+                        
+                        if (sourceNode && targetNode) {
+                            const latency = targetMember.latency || this.estimateLatency(sourceNode, targetNode);
                             
                             links.push({
-                    source: sourceNode.id,
-                    target: targetNode.id,
+                                source: sourceIp,
+                                target: targetMember.ip,
                                 latency: latency,
                                 sourceNode: sourceNode,
                                 targetNode: targetNode,
@@ -737,6 +758,31 @@ class TopologyViewModel extends ViewModel {
                             });
                         }
                     }
+                }
+            }
+        }
+        
+        // If no actual connections found, create a basic mesh
+        if (links.length === 0) {
+            logger.debug('TopologyViewModel: No actual connections found, creating basic mesh');
+            for (let i = 0; i < nodes.length; i++) {
+                for (let j = i + 1; j < nodes.length; j++) {
+                    const sourceNode = nodes[i];
+                    const targetNode = nodes[j];
+                    
+                    const estimatedLatency = this.estimateLatency(sourceNode, targetNode);
+                    
+                    links.push({
+                        source: sourceNode.id,
+                        target: targetNode.id,
+                        latency: estimatedLatency,
+                        sourceNode: sourceNode,
+                        targetNode: targetNode,
+                        bidirectional: true
+                    });
+                }
+            }
+        }
         
         return { nodes, links };
     }