Visum Thinker MCP Server

# Test: Mantenere istanza VisumPy viva per accesso diretto import sys import os import time import json print("=== TEST ISTANZA VISUMPY PERSISTENTE ===") print("Obiettivo: Una sola istanza VisumPy che rimane viva per tutte le analisi") # Setup paths visum_path = r"H:\Program Files\PTV Vision\PTV Visum 2025\Exe" python_path = os.path.join(visum_path, "Python") if visum_path not in sys.path: sys.path.insert(0, visum_path) if python_path not in sys.path: sys.path.insert(0, python_path) # GLOBAL VISUM INSTANCE - manteniamo una referenza globale GLOBAL_VISUM_INSTANCE = None GLOBAL_PROJECT_LOADED = None def get_or_create_visum_instance(): """Ottieni istanza Visum globale o creane una nuova""" global GLOBAL_VISUM_INSTANCE, GLOBAL_PROJECT_LOADED try: import VisumPy.helpers as vh # Se non esiste, crea if GLOBAL_VISUM_INSTANCE is None: print(f" 🆕 Creating new VisumPy instance...") GLOBAL_VISUM_INSTANCE = vh.CreateVisum(250) print(f" ✅ VisumPy instance created") GLOBAL_PROJECT_LOADED = None # Verifica che sia ancora viva try: # Test rapido per verificare se l'istanza è ancora valida nodes = GLOBAL_VISUM_INSTANCE.Net.Nodes.Count print(f" ♻️ Using existing instance: {nodes:,} nodes") except: print(f" 💀 Instance died, creating new one...") GLOBAL_VISUM_INSTANCE = vh.CreateVisum(250) GLOBAL_PROJECT_LOADED = None return GLOBAL_VISUM_INSTANCE except Exception as e: print(f" ❌ Failed to get/create instance: {e}") return None def ensure_project_loaded(visum_instance, project_path): """Assicura che il progetto sia caricato""" global GLOBAL_PROJECT_LOADED try: # Check se progetto già caricato current_nodes = visum_instance.Net.Nodes.Count if current_nodes > 0 and GLOBAL_PROJECT_LOADED == project_path: print(f" 📂 Project already loaded: {current_nodes:,} nodes") return True # Carica progetto print(f" 📂 Loading project: {os.path.basename(project_path)}") visum_instance.LoadVersion(project_path) new_nodes = visum_instance.Net.Nodes.Count print(f" ✅ Project loaded: {new_nodes:,} nodes") GLOBAL_PROJECT_LOADED = project_path return True except Exception as e: print(f" ❌ Failed to load project: {e}") return False def visum_analysis(analysis_name, analysis_func): """Esegui analisi usando l'istanza globale""" print(f"\n🔍 {analysis_name}") # Ottieni istanza visum = get_or_create_visum_instance() if not visum: return None # Assicura progetto caricato project_path = r"H:\go\italferr2025\Campoleone\100625_Versione_base_v0.3_sub_ok_priv.ver" if not ensure_project_loaded(visum, project_path): return None # Esegui analisi try: start_time = time.time() result = analysis_func(visum) elapsed = time.time() - start_time print(f" ⏱️ Analysis completed in {elapsed:.3f}s") return result except Exception as e: print(f" ❌ Analysis failed: {e}") return None # TEST: Simulazione chiamate MCP multiple try: print(f"\n🧪 SIMULATION: Multiple MCP tool calls") # Simulazione tool 1: Network Statistics def network_stats(visum): stats = { "nodes": visum.Net.Nodes.Count, "links": visum.Net.Links.Count, "zones": visum.Net.Zones.Count } print(f" Network: {stats['nodes']:,} nodes, {stats['links']:,} links, {stats['zones']:,} zones") return stats result1 = visum_analysis("Tool 1: Network Statistics", network_stats) # Simulazione tool 2: Node Analysis def node_analysis(visum): # Prova a ottenere alcuni attributi dei nodi try: # Get first 5 nodes node_container = visum.Net.Nodes if node_container.Count > 0: first_nodes = node_container.GetMultiAttValues('No')[:5] print(f" First 5 nodes: {first_nodes}") return {"sample_nodes": first_nodes} except Exception as e: print(f" ⚠️ Node details failed: {e}") return {"node_count": visum.Net.Nodes.Count} result2 = visum_analysis("Tool 2: Node Analysis", node_analysis) # Simulazione tool 3: Quick Stats def quick_stats(visum): return { "timestamp": time.time(), "nodes": visum.Net.Nodes.Count, "instance_id": id(visum) # Per verificare se è la stessa istanza } result3 = visum_analysis("Tool 3: Quick Stats", quick_stats) # Simulazione tool 4: Dopo 10 secondi print(f"\n⏰ Waiting 10 seconds to test persistence...") time.sleep(10) result4 = visum_analysis("Tool 4: After 10s", quick_stats) # Analisi risultati print(f"\n📊 RESULTS ANALYSIS:") if result1 and result3 and result4: print(f" Tool 1 nodes: {result1.get('nodes', 'N/A'):,}") print(f" Tool 3 nodes: {result3.get('nodes', 'N/A'):,}") print(f" Tool 4 nodes: {result4.get('nodes', 'N/A'):,}") # Verifica consistenza nodes_consistent = (result1['nodes'] == result3['nodes'] == result4['nodes']) print(f" Nodes consistent: {'✅' if nodes_consistent else '❌'}") # Verifica stessa istanza same_instance = (result3['instance_id'] == result4['instance_id']) print(f" Same instance: {'✅' if same_instance else '❌'}") if nodes_consistent and same_instance: print(f"\n🎉 SUCCESS: Persistent VisumPy instance works!") # Salva successo success_data = { "timestamp": time.time(), "method": "Persistent VisumPy instance", "api": "VisumPy_Persistent_Global", "consistency_check": "passed", "instance_reuse": "confirmed", "nodes": result1['nodes'], "persistence_seconds": 10, "status": "PERSISTENT_INSTANCE_SUCCESS" } with open(r"H:\visum-thinker-mcp-server\visumpy_persistent_success.json", 'w') as f: json.dump(success_data, f, indent=2) print(f"💾 Persistent instance success saved!") else: print(f"❌ Consistency or instance reuse failed") # Test finale: verifica che l'istanza sia ancora viva print(f"\n🔍 Final instance check:") final_visum = get_or_create_visum_instance() if final_visum: final_nodes = final_visum.Net.Nodes.Count print(f" Final check: {final_nodes:,} nodes - Instance still alive! ✅") print(f"\n🚀 SOLUTION CONFIRMED:") print(f" - Use global VisumPy instance") print(f" - Reuse same instance across MCP calls") print(f" - Load project only once") print(f" - Ultra-fast subsequent calls") except Exception as e: print(f"❌ Test failed: {e}") import traceback traceback.print_exc() print(f"\n=== TEST ISTANZA PERSISTENTE COMPLETATO ===") print("Key insight: Keep VisumPy instance alive globally!")