Add simulated data fallback for historical analysis when Prometheus is not accessible

app/api/routes.py

@@ -536,6 +536,9 @@ async def get_workload_historical_metrics(
                 cluster_cpu_total = 0
                 cluster_memory_total = 0
                 
+                # Check if we got any data from Prometheus
+                prometheus_available = False
+        
         if cpu_usage_data.get("status") == "success" and cpu_usage_data.get("data", {}).get("result"):
             cpu_usage = float(cpu_usage_data["data"]["result"][0]["value"][1])
         
@@ -560,6 +563,39 @@ async def get_workload_historical_metrics(
                 if cluster_memory_data.get("status") == "success" and cluster_memory_data.get("data", {}).get("result"):
                     cluster_memory_total = float(cluster_memory_data["data"]["result"][0]["value"][1])
                 
+                # Check if Prometheus is available (any non-zero values)
+                if cluster_cpu_total > 0 or cluster_memory_total > 0:
+                    prometheus_available = True
+                
+                # If Prometheus is not available, provide simulated data for demonstration
+                if not prometheus_available:
+                    # Simulate cluster resources (typical OpenShift cluster)
+                    cluster_cpu_total = 24.0  # 6 nodes * 4 cores each
+                    cluster_memory_total = 96.0 * (1024**3)  # 6 nodes * 16GB each
+                    
+                    # Simulate workload metrics based on namespace
+                    if namespace == "resource-governance":
+                        cpu_usage = 0.05
+                        memory_usage = 128 * (1024**2)  # 128MB
+                        cpu_requests = 0.1
+                        memory_requests = 128 * (1024**2)
+                        cpu_limits = 0.5
+                        memory_limits = 512 * (1024**2)
+                    elif namespace == "shishika01":
+                        cpu_usage = 0.15
+                        memory_usage = 256 * (1024**2)  # 256MB
+                        cpu_requests = 0.2
+                        memory_requests = 256 * (1024**2)
+                        cpu_limits = 1.0
+                        memory_limits = 1024 * (1024**2)
+                    else:
+                        cpu_usage = 0.08
+                        memory_usage = 192 * (1024**2)  # 192MB
+                        cpu_requests = 0.15
+                        memory_requests = 192 * (1024**2)
+                        cpu_limits = 0.8
+                        memory_limits = 768 * (1024**2)
+                
                 # Calculate percentages
                 cpu_usage_percent = (cpu_usage / cluster_cpu_total * 100) if cluster_cpu_total > 0 else 0
                 memory_usage_percent = (memory_usage / cluster_memory_total * 100) if cluster_memory_total > 0 else 0
@@ -572,6 +608,8 @@ async def get_workload_historical_metrics(
                     "workload": workload,
                     "namespace": namespace,
                     "time_range": time_range,
+                    "prometheus_available": prometheus_available,
+                    "data_source": "simulated" if not prometheus_available else "prometheus",
                     "cluster_total": {
                         "cpu_cores": cluster_cpu_total,
                         "memory_bytes": cluster_memory_total,

app/static/index.html

@@ -1556,8 +1556,13 @@
             const clusterTotalDiv = document.getElementById('clusterTotal');
             const workloadDataDiv = document.getElementById('workloadData');
             
+            // Add data source indicator
+            const dataSourceIndicator = data.data_source === 'simulated' ? 
+                '<div style="background: #fff3cd; border: 1px solid #ffeaa7; border-radius: 4px; padding: 10px; margin-bottom: 15px; color: #856404;"><strong>📊 Demo Mode:</strong> Showing simulated data for demonstration. Prometheus integration requires proper RBAC configuration.</div>' : 
+                '<div style="background: #d4edda; border: 1px solid #c3e6cb; border-radius: 4px; padding: 10px; margin-bottom: 15px; color: #155724;"><strong>✅ Live Data:</strong> Real metrics from Prometheus</div>';
+            
             // Render cluster total resources
-            clusterTotalDiv.innerHTML = `
+            clusterTotalDiv.innerHTML = dataSourceIndicator + `
                 <div class="cluster-stats">
                     <div class="stat-card">
                         <h4>CPU Total</h4>